MAX34461A Evaluation Kit

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Specifications

• Product: MAX34461A Evaluation Kit
• Channels: 16-channel voltage monitor and sequencer
• Power Supply: USB powered
• Operating System: Windows 10 PC

Product Usage Instructions

Required Equipment

• MAX34461A EV kit and hardware
• Windows 10 PC
• USB port
• Mini-USB cable (included)

Procedure

1. Ensure jumpers/shunts J23 and J1 are installed for proper
   communication.

2. Place the EV kit hardware on a nonconductive surface to avoid
   short-circuiting.

3. Connect the EV kit hardware to a PC using the Mini-USB
   cable.

4. Verify power LED (D20) is green and com LED (D21) is red or
   flashing orange.

5. Wait for Windows to install necessary device drivers. Do not
   run the GUI before driver installation is complete.

6. Download the EV kit software from www.analog.com.

7. Run the installer from the downloaded .ZIP file.

8. Follow on-screen instructions to complete software
   installation.

FAQ

Q: What should I do if the device driver installation does not

start automatically on Windows?

A: You can manually install the device driver by going to Device
Manager, locating the unrecognized device, and selecting “Update
Driver.”

Q: Can I use the EV kit with a different operating system?

A: The EV kit is designed for use with Windows 10 PC.
Compatibility with other operating systems is not guaranteed.

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Evaluates: MAX34461A

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MAX34461A Evaluation Kit

General Description
The MAX34461A evaluation kit (EV kit) provides the hardware and software graphical user interface (GUI) necessary to evaluate the MAX34461A PMBusTM 16-channel voltage monitor and sequencer. The EV kit includes a MAX34461AA01+ installed, as well as four power supplies that can be sequenced, monitored, and margined by the IC.
EV Kit Contents
Assembled Circuit Board Including MAX34461AA01+
Mini-USB Cable
MAX34461A EV Kit Photo

Features
Easy Evaluation of the MAX34461A Four Power-Supply Channels EV Kit Hardware Is USB Powered (USB Cable
Included) USB HID Interface Windows® 10-Compatible Software RoHS Compliant Proven PCB Layout Fully Assembled and Tested
Ordering Information appears at end of data sheet.

PMBus is a trademark of SMIF, Inc. Windows is a registered trademark of Microsoft Corp.
19-7730; Rev 1; 4/24
© 2024 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887 U.S.A. | Tel: 781.329.4700 | © 2024 Analog Devices, Inc. All rights reserved.

MAX34461A Evaluation Kit

Evaluates: MAX34461A

MAX34461A EV Kit Files
FILE MAX344XXEVKitSoftwareInstall.EXE Note: The .EXE file is downloaded as a .ZIP file.

Application program

DESCRIPTION

Quick Start
Required Equipment
MAX34461A EV kit and hardware
Windows 10 PC
USB port
Mini-USB cable (included)
Note: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly from the install or EV kit software. Text in bold and underlined refers to items from the Windows operating system.
Procedure
The EV kit is fully assembled and tested. Follow the steps below to verify board operation:

1. Ensure that jumpers/shunts J23 and J1 are installed. Note: The GND planes of the USB I2C dongle and the EV kit are not connected. The GND jumper on J23 must be connected for proper communication.
2. Ensure that switch S1 is in the high position and S4­S6 are in the on position.
3. Set the EV kit hardware on a nonconductive surface to ensure that nothing on the PCB gets shorted together.
4. Prior to starting the GUI, connect the EV kit hardware to a PC using the supplied Mini-USB cable, or equivalent. The power LED (D20) should be green and the com LED (D21) should be red and slowly flash orange.
5. Windows should automatically begin installing the necessary device driver. The USB interface of the EV kit hardware is configured as an HID device and therefore does not require a unique/custom device driver. Once the driver installation is complete, a Windows message appears near the System Icon menu indicating that the hardware is ready to use. Do not attempt to run the GUI prior to this message.

If you do, then you must close the application and restart it once the driver installation is complete. On some versions of Windows, administrator privileges may be required to install the USB device.
6) Once the device driver installation is complete. Visit www.analog.com/en/resources/evaluation-hardware-and-software/software.html to download the latest version of the EV kit software and click on MAX344XXEVKitSoftware.
7) Open the .ZIP file and double-click on the .EXE file to run the installer. A message box stating: The publisher could not be verified. Are you sure you want to run this software? may appear. If so, click Yes.
8) The installer GUI appears. Click Next and then Install. Once complete, click Close.
9) Go to Start | All Programs. Look for the MAX344XXEVKitSoftware folder and click on the MAX34460EVKitSoftware.EXE file inside the folder.
10) When the GUI appears, the text at the bottom should display EV Kit Hardware Connected. The com LED (D21) on the EV kit board should turn green.
Detailed Description of Software
Software Startup
If the MAX34461A EV kit is connected when the software is opened, the software first initializes the hardware to communicate. Next, the software searches for all slave addresses on the I2C bus and connects to the first slave address that is valid. The model number is then read to see which device is connected. The GUI displays EV Kit Hardware Connected at the bottom.
If the EV kit is not connected on software startup, a No Hardware window pops up and asks the user to select the device they would like to run offline. Select a device and click OK. The GUI then populates with default EV kit values. Once the EV kit is connected, the GUI executes the sequence above.

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Menu Items
The File menu item contains save, load, and exit options. To save the current GUI configuration, click Save Project As. This saves the device name and channel names to an XML file and saves PMBus configurations to a HEX file. If a device is connected, this reads and saves data directly from the device; otherwise, it saves the configuration that is currently displayed on the GUI. Save Project saves the GUI configuration to a file that was last saved or loaded. Load Project updates the GUI with the XML file, writes the HEX file to the device, and reads current values from the device. If a device is not connected, then the HEX file is written to a virtual device. The HEX file only contains data for the PMBus commands that are stored in flash. Create Report saves a CSV file that contains all the tables displayed on the Sequencing, Monitoring, and Margining tabs.
The Connection menu item allows the user to connect to a desired device. Find Slave Addresses searches for all slave addresses connected to the I2C bus. To select a device, click Select Slave Address and all the slave addresses found are shown and are selectable. Slave addresses 18h and 34h are not selectable to prevent communicating with the alert response address and factory- programmed address.
The Auto Polling menu item has options for automatic reading of the device. To start polling, select the delay between reads: 300ms, 500ms, 800ms, or 1000ms. Each poll reads the Power Status (STATUS_WORD, 79h), Fault Status (STATUS_WORD, 79h), and the polled values for the Data Log Graph tab. The Status and Margining tabs are only polled if the tab is currently selected. To stop polling, select Off from the menu. Polling can also be stopped by selecting items in the File menu, Connection menu, or by pressing buttons that involve action with the NV Fault Log or flash.
The Device menu item shows which device the tables and controls are configured for. To turn the power supplies on or off, select the Power On/Power Off button, which writes a value to the OPERATION (01h) command. The supplies power on with margining off and power off based on the Power Down Action drop- down list on the Sequencing tab. When the GUI Lock is on, all writing actions are disabled.

The version of the GUI software and the device firmware can be checked by clicking the About option from the Help menu item on the status bar.
Status Log
The status log below the tabs displays all the actions the GUI performs. Whenever a PMBus command is read or written, the action is confirmed by the log. To save the log, press the Save Log button and the text in the box is saved to a .TXT file. The log can also be cleared by pressing the Clear Log button.
Sequencing Tab
The Sequencing tab sheet (Figure 1) includes all timing and alarm configurations. All values on the tab are read when the tab is selected. The channels can be sequenced based on time or event by selecting the option from the Sequencing Mode drop-down list. If PMBus (timebased) is chosen, then the values under the Timeslot (MFR_SEQ_TIMESLOT, D3h) column are all written to 0. The Sequencing Mode drop-down lists write to bits in MFR_MODE (D1h). The channels can be powered down simultaneously or with a TOFF delay by selecting the option in the Power Down Action drop-down list that writes to a bit in ON_OFF_CONFIG (02h). The Fault Retry Time sets the value in MFR_FAULT_RETRY (DAh). The Output Type writes to MFR_PSEN_CONFIG (D2h) to set the PSEN behavior. For the PSEN pin to act as a normal enable/disable for a power supply, select one of the PSEN options under Output Type. If a GPO option is selected, the channel is no longer a part of the sequencer, so the Timeslot and TON Max are written to 0 and all the channel configurations on the table become read-only. The timeslot for each channel can be set by selecting a value in the Timeslot column, which writes to MFR_SEQ_TIMSLOT (D3h). Note that these values can only be changed when the Sequencing Mode is set to Timeslot (event-based). The sequencing delays can be set by writing values to TON Delay (TON_DELAY, 60h), TON Max (TON_MAX_FAULT_LIMIT, 62h), and TOFF Delay (TOFF_DELAY, 64h). A channel can be set to global by checking the checkbox in the Global column to write to a bit in MFR_FAULT_RESPONSE (D9h). The Fault Response column writes to the TON Max Fault response bits in MFR_FAULT_RESPONSE (D9h). To log faults into the NV fault log, check the checkbox in the Log Faults column that writes to MFR_FAULT_RESPONSE (D9h).

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Figure 1. MAX34461A EV Kit GUI (Sequencing Tab)
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Sequencing Graph Tab
The Sequencing Graph tab sheet (Figure 2) displays the timing diagrams for all the channels. When the Power Up radio button is selected, the TON Delay (TON_DELAY 60h) and TON Max (TON_MAX_FAULT_LIMIT, 62h) values are displayed on the graph. To change the TON Delay, click and drag the green vertical bar; to change TON Max, click and drag the red vertical bar. The Power Down graph displays the TOFF Delay (TOFF_DELAY 64h) and can be changed by clicking and dragging the green vertical bar. These values write to the PMBus command when the mouse is released. The Power Up graph can be changed to PMBus (time-based) or Timeslot (event-based) by selecting the option on the Sequencing tab (Figure 1). When Timeslot (eventbased) is selected, the power-up graph allows the Timeslot (MFR_SEQ_TIMSLOT D3h) to be changed by clicking and dragging the ramp.
Monitoring Tab
The Monitoring tab sheet (Figure 3) displays the fault/warn limit settings for each channel and for each temperature sensor. To read the settings, click on the Monitoring tab and all the values are automatically read. To write to a value, click on the corresponding cell, type in a valid value, and either click another cell or press Enter on the keyboard. In the VOLTAGE table, the Sequencer column shows the status of the channel and is read only. To turn on or off the sequencer, select a PSEN or GPO option, respectively, on the Sequencing tab (Figure 1) under the Output Type column. The Nominal and Resistive Ratio columns are calculated based on a nominal ADC level of 1.8V to set the VOUTSCALE MONITOR (2Ah). The Resistive Ratio is found by dividing 1.8V by the Nominal value. The fault/warn limits can be set by entering the voltage level or the percent of the nominal in the UV Fault (VOUT_UV_FAULT_LIMIT, 44h), UV Warn (VOUT_UV_WARN_LIMIT, 43h), OV Warn (VOUT_OV_WARNLIMIT, 42h), OV Fault (VOUT OV_FAULT_LIMIT, 40h), PG On (POWER_GOOD_ON, 5Eh), and PG Off (POWER_GOOD_OFF, 5Fh) columns. The Fault Response column writes to the OV and UV fault response bits in MFR_FAULT_RESPONSE (D9h). To write to the OT fault response bits in MFRFAULT RESPONSE (D9h), check the checkbox in the OT Fault column and it sets the same response selected in the Fault Response column. To log faults into the NV fault log, check the checkbox in the Log Faults column to write to MFR_FAULT_REPSPONSE (D9h). In the

TEMPERATURE table, the sensors can be enable/ disabled in the Enable column, which writes to a bit in MFR_TEMP_SENSOR_CONFIG (F0h). The OT warn/ fault limits can be set by entering a value in the OT Warn (OT_WARN_LIMIT, 51h) or OT Fault (OT_FAULT_LIMIT, 4Fh) columns.
The power-good delay can be adjusted with the PG Delay up/down spin box, which writes to MFR_PG_DELAY (DBh).
Margining Tab
The Margining tab sheet (Figure 4) includes the margin configurations, margin fault status, and a DAC calculator for the DS4424. All values on the tab are read when the tab is selected. The Margin column turns the margin on/off by writing to the OPERATION (01h) command. To force all the channels to the same margin, select the state in the Margin All Control drop-down list to the right of the table. The Slope, Open Loop, and DAC Value columns configure the DS4424 and are read from bits in the MFR_MARGIN_CONFIG (DFh) command. The margining limits can be set by entering the voltage level or the percent of the nominal in the Margin Low (VOUT_MARGIN_LOW, 26h) and Margin High (VOUT_MARGIN_HIGH, 25h) columns. When the margining is turned on, the fault status is shown in the Status column read from STATUS_MFR_SPECIFIC (80h). The Polled column displays the current channel voltage read from READ_VOUT (8Bh). To read the Status and Polled values, press the Read Status and Vout button or turn on Auto Polling. The margin fault can be cleared by pressing the Clear Faults button on the Status tab (Figure 5).
The Calculator is used to find the DS4424 external resistor (RFS), which determines the full-scale and stepsize current for the DAC. If RFS is calculated to be outside its limits (40k < RFS < 160k), then the resistor is forced to the edge of the limit and the DS4424 RFS edit box turns red. The equations used to calculate the outputs are given in Table 1.
Table 1. DAC Calculator
OUTPUT EQUATIONS
IFB = (VOUT)/(R1 + R2) DS4424 RFS = (7.75)/(IFB x margining range) DS4424 full scale = (0.976 x 127)/(16 x RFS)
DS4424 step size = full scale/64

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Figure 2. MAX34461A EV Kit GUI (Sequencing Graph Tab)
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Figure 3. MAX34461A EV Kit GUI (Monitoring Tab)
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Figure 4. MAX34461A EV Kit GUI (Margining Tab)
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Status Tab
The Status tab sheet (Figure 5) displays all the faults, warnings, and device ID information. To read all the current output values, faults, and warnings, press the Read Status button or turn on Auto Polling. The fault and warning bits are read from STATUSVOUT (7Ah), STATUS MFR_SPECIFIC (80h) and STATUS_TEMPERATURE (7Dh). The Polled values are read from READ_VOUT (8Bh) and READ_TEMPERATURE (8Dh). Each color indicator turns green if the status is good, red if there is a fault, or yellow to indicate a warning. The Polled value may not reflect the fault or warning because some bits are latches and have to be cleared. To clear the faults and warnings, press the Clear Faults button, which sends the CLEAR_FAULTS (03h) command. The Time Count displays the 32-bit counter read from the MFRTIME COUNT (DDh) command. This timer can be reset by pressing the Reset Time Count button, which writes a sequence of all zeros, all ones, and all zeros to MFR_TIME_COUNT (DDh). The ID COMMANDS table displays all the ID information of the device. Press the Read ID button to read all the commands in the table.
The POR Status section displays the status of the POR bit of STATUS_MFRSPECIFIC (80h) (for Page 255). After a POR (Power-On-Reset) event, the POR Status section displays POR Has Occurred. The user may acknowledge the POR event by clearing the POR bit by performing any of the following actions: clicking the Read/Clear POR button, clicking the Clear Faults button, switching the auto polling on or by reading the register for Pg255 on the Registers tab. Any of this action resets the POR bit and the displayed message changes to POR Has Not Occurred.
Data Log Graph Tab
The Data Log Graph tab sheet (Figure 6) plots the polled values in a graph and keeps track of the minimum and maximum values for each channel voltage and each temperature sensor. To read and plot the polled values, press the Data Log Read button or turn on Auto Polling. Each data log reads every channel’s voltage from READ VOUT (8Bh) and every temperature sensor from READ_ TEMPERATURE (8Dh). The software finds the minimum and maximum values over multiple reads. The Poll Count displays the number of reads that have been tracked in the data log. When the polled count reaches 10,000, the graph deletes the oldest polled values and adds a new polled value. The min/max values are still based on all the poll count values, but the graph only displays the latest 10,000 polled values. To reset the Poll Count and all the minimum and maximum values, press the Data Log Reset button. To turn off data logging during polling, check the Data Log Off checkbox. The Select Data combo box is used

to select the voltage or temperature data to display on the graph and in the MIN/MAX Data table. To save all the data graphed to a CSV file, press the Save Data Log button.
Fault Log Tab
The Fault Log tab sheet (Figure 7) displays the NV Fault Log and fault configurations. When the tab is selected, the Overwrite and Fault Log Depth are read. When the fault log is full, the Enable Overwrite can be checked to automatically overwrite previous logs. The fault log depth can be adjusted with the Fault Log Depth combo box. The Enable Overwrite and Fault Log Depth are read from bits in MFR_NV_LOG_CONFIG (D8h). To read the fault log, press the Read NV Fault Log button and all 255 bytes from MFR_NV_FAULT_LOG (DCh) are displayed in the table. To clear or force the fault log, press the Clear NV Fault Log or Force NV Fault Log button, respectively. These buttons write to a bit in MFR_NV_LOG_CONFIG (D8h). To save the current fault log displayed in the table, press the Dump to a File button and the table is saved as a CSV file.
Registers Tab
The Registers tab sheet (Figure 8) displays all the PMBus commands and their current data. To read the registers, select a page from the top drop-down list and all the PMBus commands valid for that page are automatically read. The commands not valid for that page are grayed out. Press the Read All button to read the registers again. To write to a command, enter the hex value in the cell and click another cell or press Enter on the keyboard. The current register configuration can be saved to flash by pressing the Save to Flash button, which sends the STORE_DEFAULT_ALL (11h) command. To return the device to the configuration saved in flash, press the Restore from Flash button, which sends the RESTORE_DEFAULT_ALL (12h) command. To reset the device, press the Soft Reset button to write to a bit in MFR_MODE (D1h). The Calculate CRC button sends the RESTORE_DEFAULT_ALL (12h) command and then calculates a 2-byte CRC based on PMBus configuration commands that are stored in flash. The Read CRC from MFR_DATE button reads MFR_DATE (9Dh) and displays the upper 2 bytes in the edit box below the button. The Calculate CRC & Write to MFR_DATE button sends the RESTORE_DEFAULTALL (12h) command, calculates a CRC, writes the CRC to the upper 2 bytes of MFR DATE (9Dh), and sends STORE_DEFAULT_ALL (11h) command. The Command Description displays the bitmap for selected PMBus commands. Select the command from the drop-down list and the table below displays a description of each bit for that command.

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Figure 5. MAX34461A EV Kit GUI (Status Tab)
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Figure 6. MAX34461A EV Kit GUI (Data Log Graph Tab)
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Figure 7. MAX34461A EV Kit GUI (Fault Log Tab)
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Figure 8. MAX34461A EV Kit GUI (Registers Tab)
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Detailed Description of Hardware
User-Supplied I2C Interface
To communicate with the MAX34461A using a usersupplied I2C interface, first remove the J23 jumper to disconnect the USB I2C dongle. If the dongle is no longer desired, it can be separated from the EV kit by snapping the PCB at the scored line. Connect test points SDA, SCL, GND, and 5V to the off-board I2C interface. The I2C interface should operate at 3.3V.
User-Supplied Power Supplies
To disconnect the on-board power supplies, turn the DAC (S4), RS (S5), and PSEN (S6) DIP switches off. The power supplies’ GND should be connected to the banana jack GND. Connect the desired PSEN pins to the enable pin on the power supply, and the RS pins to a voltagedivider on the output of the power supply. The voltagedivider is only required if the output voltage is greater than 1.8V. For closed-loop margining with the on-board DS4424, connect DAC0­DAC3 to the feedback of the power supply channels 0­3.

User-Supplied DS4424
To margin with a user-supplied DS4424, disconnect the on-board current DAC by switching the DAC (S4) DIP switch to off. Then connect MSDA, MSCL, and GND on J3 to the external current DAC. The slave address for the user-supplied DS4424 should be 60h for power-supply channels 4­7, A0h for channels 8­11, or E0H for channels 12­15. The on-board DS4424 has slave address 20h, which margins channels 0­3.
User-Supplied DS75LV
To use an off-board digital temperature sensor, connect MSDA, MSCL, and GND on J3 to the DS75LV. The slave address for the user-supplied DS75LV should be 92h, 94h, or 96h. The on-board DS75LV has slave address 90h.
Troubleshooting
All efforts were made to ensure that each kit works on the first try, right out of the box. In the rare occasion that a problem is suspected, see Table 5 to help troubleshoot the issue.

Table 2. Description of LEDs

LED D2
D6
D7 DA DB DC DD D20 (Power)
D21
(Com)

COLOR Red
Green
Red Red Red Red Red Red Green
Red
Green

DESCRIPTION Fault: A shutdown fault occurred for a global primary group. Power Good (PG): All enabled channels for the primary group are above their associated power-good-on value. Alert: A fault has occurred. VOUT0: Channel 0 is on VOUT1: Channel 1 is on VOUT2: Channel 2 is on VOUT3: Channel 3 is on USB Power Fault: A fault occurred due to overvoltage limit, current limit, or thermal limit. USB Power: USB power supply is on. Communication: After the software has initialized the hardware, the LED flashes red when an I2C command is received. Initialized: Hardware has been initialized by software.

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Table 3. Description of Switches

SWITCH
S1
S3 1 2
S4 3 4 1 2
S5 3 4 1 2
S6 3 4

SWITCH POSITION HIGH LOW
Pressed SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT SHORT

DESCRIPTION Control: Pulls the control pin high. Control: Pulls the control pin low. Reset: Pulls the reset pin low to reset the MAX34461A. DAC0: Connects DAC0 of DS4424 to FB0 of the channel 0 power supply. DAC1: Connects DAC1 of DS4424 to FB1 of the channel 1 power supply. DAC2: Connects DAC2 of DS4424 to FB2 of the channel 2 power supply. DAC3: Connects DAC3 of DS4424 to FB3 of the channel 3 power supply. RS0: Connects RS0 of MAX34461A to the channel 0 power supply. RS1: Connects RS1 of MAX34461A to the channel 1 power supply. RS2: Connects RS2 of MAX34461A to the channel 2 power supply. RS3: Connects RS3 of MAX34461A to the channel 3 power supply. PSEN0: Connects PSEN0 of MAX34461A to the channel 0 power supply. PSEN1: Connects PSEN1 of MAX34461A to the channel 1 power supply. PSEN2: Connects PSEN2 of MAX34461A to the channel 2 power supply. PSEN3: Connects PSEN3 of MAX34461A to the channel 3 power supply.

Table 4. Description of Jumpers

JUMPER J1
J23-J24

JUMPER POSITION VDD-VDUT 5V-5V SDA-SDA GND-GND SCL-SCL

DESCRIPTION MAX34461A Power: Connects VDD to VDUT (MAX34461A). 5V: Supplies 5V from the USB I2C dongle to the EV kit board. SDA: Connects SDA from the USB I2C dongle to the MAX34461A SDA. GND: Connects GND from the USB I2C dongle to the EV kit board GND. SCL: Connects SCL from the USB I2C dongle to the MAX34461A SCL.

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Table 5. Troubleshooting

SYMPTOM

CHECK Is the LED labeled D20 red?

SOLUTION
If yes, then the electronic fuse (U7) is in a fault state. Inspect for electrical shorts on the PCB and make sure that the PCB is not sitting on a conductive surface.

GUI says hardware not found.

Does the LED labeled D21 turn green when the GUI is running?

If not, then exit the GUI and try running it again. If D20 still does not turn green, then exit the GUI and try connecting the USB cable to a different USB port on the PC and wait for a Windows message that states the hardware is ready to use. Run the GUI again.

No slave address found and read/writes fail
Channels do not turn on
Margining is not working, voltage is not changing

Are any of the LEDs illuminated? Jumper J1 Jumper J23 Is there a CONTROL# fault on the Status Tab of the GUI?
Is the ALERT LED on and all channel LEDs off? Is the ALERT LED on and Channel 0 LED on?
S4

If not, then the PCB may not be getting power from the USB. Try a different USB cable or a different USB port. Make sure jumper J1 is installed to power the MAX34461A. Make sure 4 jumpers on J23 are installed.
Default configuration Control is active high. Make sure S1 is in the high position.
If so, make sure switch PSEN (S6) is in the on position to connect the PSENs of MAX34461A to the channels.
If so, make sure switch RS (S5) is in the on position to connect the power- supply outputs to the MAX34461A.
Make sure the DAC (S4) switch is in the on position to connect the DACs from DS4424 to FB of channels 0­3.

Ordering Information

PART

TYPE

MAX34461AEVKIT#

EV Kit

Denotes an RoHS-compliant device that may include lead(Pb), which is exempt

under the RoHS requirements.

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MAX34461A EV Kit Bill of Materials

DESIGNATOR C0A, C0B, C0C, C0D, C2A,C2B, C2C, C2D, C20, C22,C25, C201, C202, C204 C1A, C1B, C1C, C1D, C04, C21, C24,
C203, C214 C01, C05, C211 C02, C03, C07, C08, C10, C11
C06 C23 C213 C215 D1, D22 D2, D7, DA-DD D6 D20, D21 J1 J2, J22 J3 J5-J12, J21 J20 J23 Q2
R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16,
R17, R36, R37, R102, R107, R108, R201
R0A, R0B, R0C, R0D, R77, R79, R80, R81, R82, R83, R84, R85, R86, R87, R88, R89, R90, R91, R92, R93, R94,
R95, R103, R109, R123, R133 R1A, R1B, R1C, R1D R2A, R2B, R2C, R2D R3A, R3B, R3C, R3D R4A, R4B, R4C, R4D R5A, R5B, R5C, R5D
R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, R33, R34, R35, R40, R41, R42, R43, R44, R45, R46, R47, R48, R49, R50, R51, R52, R53, R54, R55, R76, R78, R110,
R121, R132, R134, R162 R56, R57, R58, R59
R100, R130, R131, R210 R101, R161, R164, R207 R104, R120, R124, R211, R212
R105, R106, R213 R111, R122
R160, R163, R206

VALUE 10uF, X5R ceramic capacitors
(0805) 0.01uF, X7R ceramic capacitors
(0805) 1uF, X7R ceramic capacitors (0805)
0.1uF, X7R ceramic capacitors 22nf
470uF aluminum capacitor 220nF, X7R ceramic capacitor
DNP Schottky diodes
Red LED Green LED LED_DUAL 2-pin header, 2.54mm pitch 4-pin header, 2.54mm pitch 3-pin header, 2.54mm pitch
DNP 5-pin female USB-mini header
8-pin (2 x 4) header 60V, 340mA nMOSFET (SC70)
0 1% resistors (0805)
100k 1% resistors (0805)
8.66k 1% resistors (0805) 3.09k 1% resistors (0805) 49.9 1% resistors (0805) 267 1% resistors (0805)
1k 1% resistors (0805)
DNP
150k 1% resistors (0805) 4.7k 1% resistors (0805) 10k 1% resistors (0805) 330 1% resistors (0805) 2.2k 1% resistors (0805) 330k 1% resistors (0805) 45.3k 1% resistors (0805)

QTY 14
9 3 7 0 0 1 0 2 6 1 2 1 2 1 0 1 1 1
26
28
4 4 4 4 4
0
4 4 4 5 3 2 3

MANUFACTURER Taiyo Yuden EMK212ABJ106KD-T
TDK C2012X7R1H103KT Murata GRM21BR71A105KA01K TDK CGJ4J2X7R1H104K Do Not Populate Do Not Populate TDK CGJ4J2X7R1H224K Do Not Populate Panasonic DB2W31900L Kingbright APTR3216EC Lumex SML-LX1206GC-TR Kingbright APHB M2012SURKCGKC 961102-6404-AR 961102-6404-AR 961102-6404-AR Do Not Populate 54819-0519 961104-6804-AR ON Semi 2N7002WT1G
Vishay CRCW08050000Z0EA
Vishay CRCW0805100KFKEA
Vishay CRCW08058K660FKEA Vishay CRCW08053K09FKEA Vishay CRCW080549R9FKEA Vishay CRCW0805267RFKEA Vishay CRCW08051K00FKEA
Do Not Populate
Vishay CRCW0805150KFKEA Vishay CRCW08054K70FKEA Vishay CRCW080510K0FKEB Vishay CRCW0805330RFKEA Vishay CRCW08052K20FKEA Vishay CRCW0805330KFKTA Vishay CRCW080545K3FKEA

www.analog.com

Analog Devices 17

MAX34461A Evaluation Kit

Evaluates: MAX34461A

MAX34461A EV Kit Bill of Materials (continued)

DESIGNATOR R203, R205 S1 S3 S4, S5, S6 TP8 TP29-TP36 TP1, TP11 TP3, TP12
TP2, TP4-TP7, TP9, TP10, TP13-TP28

VALUE 560 1% resistors (0805)
SW-SPDT Single-pole pushbutton
4-POLE DIP SW Red test point
Black test points Orange test points Yellow test points White test points

U1

MAX34461AA01+

U1A, U1B, U1C, U1D, U4, U5, U22 U2 U3 U20 U21 X1

MAX8902BATA+ DS75
DS4424 PICfor DS3900
MAX4995A OSC_CMOS_4pin

—

Mini-USB cable

—

PCB

QTY 2 1 1 3 1 8 2 2 28
1
7 1 1 1 1 1
1
1

MANUFACTURER Vishay CRCW0805560RFKEA SLS121PC04 KSR221G LFS BD04 Keystone 5010 Keystone 5011 Keystone 5013 Keystone 5014 Keystone 5012 PMBus 16-channel voltage monitor (48 TQFN-EP*) Analog Devices MAX8902BATA+ Analog Devices DS75LVS+ Analog Devices DS4424N+ Microchip PIC18LF2550-I/SO Analog Devices MAX4995AAUT+ AVX KC3225A48.0000C30E00 Assmann WSW Components AK672M/2-1-R PCB P/N: EPCBMAX34461AEVKIT

www.analog.com

Analog Devices 18

MAX34461A Evaluation Kit
MAX34461A EV Kit Schematics

www.analog.com

8

7

6

5

4

3

2

1

D

STAND OFF

1903C

MH1

02-SO632014H-00

STANDOFF

1903C 02-SO632014H-00

MH4

STANDOFF

C

1903C

MH3

02-SO632014H-00

STANDOFF

1903C

MH2

02-SO632014H-00

STANDOFF

1903C 02-SO632014H-00

MH5

STANDOFF DNI

1903C

MH6

02-SO632014H-00

STANDOFF DNI

SCREWS

B

MH7

NY PMS 632 0038 PH

MH8 NY PMS 632 0038 PH

MH9 NY PMS 632 0038 PH

MH10 NY PMS 632 0038 PH

MH11 NY PMS 632 0038 PH
DNI A

MH12 NY PMS 632 0038 PH DNI

8

7

MECHANICAL

D

SU1 J1(1:2)

SU4 J23(5:6)

880584-4 EH111000008180

SHUNT
SU2 J23(1:2)

880584-4 EH111000008180

SHUNT
SU5 J23(7:8)

880584-4

880584-4

C

EH111000008180

EH111000008180

SHUNT
SU3 J23(3:4)

SHUNT

880584-4 EH111000008180

SHUNT

PACKOUT

B

MISC1

CABLES AK672M/2-1

6

5

A

PROJECT TITLE:
max34461a_evkit_b
DRAWING TITLE:

SIZE
B
ENGINEER:

HARDWARE NUMBER:
DRAWN BY:

TEMPLATE REV: A

DATE: 11/03/2021
REV: B
SHEET 1 OF 4

4

3

2

1

Evaluates: MAX34461A

Analog Devices 19

MAX34461A Evaluation Kit
MAX34461A EV Kit Schematics (continued)

www.analog.com

8

7

6

5

3.3V

TP3

VDD

TP8

D1

TP1 5V U4

DB2W31900L

A

C

VDUT

2 1

MAX8902BATA+

R162

OPEN

1 IN

OUT 8

R160

A

D

BYP 7

C21

0.01UF

45.3K

J1

3 EN

FB 6

DNI

C22

C01

C23

10UF

1UF

C20 10UF 5 POK

GS 4

470UF

PCC02SAAN

K

R161

10K

4

3

VLED

5V U5

MAX8902BATA+

1 IN 3 EN

OUT 8 BYP 7 C24
FB 6

0.01UF

5 POK

GS 4

R163

45.3K

C25 10UF

R164 10K

2

1

TP29 TP30 TP31 TP32 TP33 TP34 TP35 TP36 D

9 EP 2 GND

9 EP 2 GND

VDD

VLED

48 RS5 47 RS6 46 RS7 45 RS8 44 RS9 43 RS10 42 RS11 41 RS12 40 RS13 39 PSEN7 38 PSEN6 37 PSEN5

VDD TP7

U1

R110 C

R120

MAX34461AA01+

R121

330

C

OPEN

A

RS5 RS6 RS7 RS8 RS9 RS10 RS11 RS12 RS13 PSEN7 PSEN6 PSEN5

OPEN

3C

VDD

VLED

R111

RS4 1 RS4 RS3 2 RS3

PSEN4 36 PSEN4

PSEN3 35 PSEN3

TP9

D6 SML-LX1206GC-TR

C

R103 100K

R104 330

A

TP2

D2 SML-LX1206SRC-TR

330K C02

0.1UF

RS2 3

RS1 4

RS0 5

A0/MONOFF_N

6

VDUT 7

8

FAULT_N 9

RS2 RS1 RS0 A0/MONOFF VDDA NC FAULT

PSEN2 PSEN1 PSEN0
RSG1 RSG0 PSEN15 PSEN14

34 PSEN2 33 PSEN1 32 PSEN0 31 RSG1 30 RSG0 29 PSEN15 28 PSEN14

2

R122 1 330K

Q2 2N7002WT1G D
G S

J6 PBC05SAAN

3.3V B

VDD

CONTROL 10 RST_N 11 RS15 12

CONTROL RST RS15

A1/PG 27 A1/PG

A1/PG

1

ALERT 26 ALERT_N

FAULT_N

2

PSEN13 25 PSEN13

VDD

VLED

CONTROL

3

B

A0/MONOFF_N

4

49 EP/VSS

13 SDA 14 SCL 15 VDD 16 REG18 17 RS14 18 MSCL 19 MSDA 20 PSEN8 21 PSEN9 22 PSEN10 23 PSEN11 24 PSEN12

R100 4.7K
R102
R101 10K

S1 SLS121PC04
TP4 01 1

22

33

C08 0.1UF

NO 2

R109 100K
C07 0.1UF

VDUT REG18 RS14 MSCL MSDA PSEN8 PSEN9 PSEN10 PSEN11 PSEN12

C

TP10

R123 100K

A

R124 330
D7 SML-LX1206SRC-TR

ALERT_N

5

KSR221GLFS

C03

C04

C05

0.1UF

0.01UF

1UF

S3 1 COM

VDD

A

J2

TSW-104-23-G-S

R105 R106

2.2K

2.2K

TP5

4

3

SDA

R108

0

2

1

SCL

R107

0

TP6

8

7

6

3.3V

J3 PCC03SAAN

3.3V

1 2 3

R130 4.7K

R131 4.7K

U2 DS75LVU+

1 SDA 2 SCL 3 OS 4 GND

VDD 8 A0 7 A1 6 A2 5

R132

OPEN

OPEN

R134

C10 0.1UF

R133 R135

100K

100K

5

4

3

A

PROJECT TITLE: DRAWING TITLE:

max34461a_evkit_b

SIZE

HARDWARE NUMBER:

B

ENGINEER:

DRAWN BY:

TEMPLATE REV: A
2

DATE: 11/03/2021 REV:
B
SHEET 2 OF 4
1

Evaluates: MAX34461A

Analog Devices 20

Analog Devices 21

www.analog.com

8 D C B

7

6

5V

TP16

PSEN0@

C0A 10UF

R0A 100K

U1A

MAX8902BATA+

1 IN

OUT 8

VOUT0

3 EN

BYP 7 C1A FB 6

0.01UF

5 POK

GS 4

FB0

9 EP 2 GND

TP17

R1A 8.66K
R2A 3.09K

A

TP21

R3A 49.9
DA SML-LX1206SRC-TR

C2A 10UF

R4A 267 RS0@

TP25

R5A 1K

C

5V

TP13

PSEN1@

C0B 10UF

R0B 100K

U1B

MAX8902BATA+

1 IN

OUT 8

VOUT1

3 EN

BYP 7 C1B FB 6

0.01UF

5 POK

GS 4

FB1

R1B 8.66K

9 EP 2 GND

TP18

R2B 3.09K

A

TP22

R3B 49.9
C2B 10UF
DB SML-LX1206SRC-TR

R4B 267 RS1@

TP26

R5B 1K

C

5V

TP14

PSEN2@

C0C 10UF

R0C 100K

U1C

MAX8902BATA+

1 IN 3 EN

OUT 8 BYP 7 C1C
FB 6

5 POK

GS 4

VOUT2 0.01UF
FB2

R1C 8.66K

9 EP 2 GND

TP19

R2C 3.09K

A

TP23

R3C 49.9
C2C 10UF
DC SML-LX1206SRC-TR

R4C 267 RS2@

TP27

R5C 1K

C

5V TP15

PSEN3@

C0D 10UF

R0D 100K

U1D

MAX8902BATA+

1 IN 3 EN

OUT 8 BYP 7 C1D
FB 6

5 POK

GS 4

VOUT3 0.01UF
FB3

R1D 8.66K

9 EP 2 GND

TP20

R2D 3.09K

A

TP24

R3D 49.9
DD SML-LX1206SRC-TR

C2D 10UF

R4D 267 RS3@

TP28

R5D 1K

C

A

8

7

6

5

4

3

2

3.3V

C11 0.1UF

R78

OPEN

R79 100K

R76

OPEN

R77 100K

13

U3 DS4424N+

MSDA

1 SDA

VCC

MSCL

2 SCL

9 A0

OUT0 8 DAC0

11 A1

OUT1 10 DAC1

R59

150K 7 FS0

R58

150K 6 FS1

R57

150K 5 FS2

R56

150K 4 FS3

OUT2 OUT3

12 DAC2 14 DAC3

GND EP

15

3

RS0 RS1 RS2 RS3 RS4 RS5 RS6 RS7 RS8 RS9 RS10 RS11 RS12 RS13 RS14 RS15

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

DNI J7 TSW-104-23-G-S
1 DAC0 2 DAC1 3 DAC2 4 DAC3

S4 BD04

11 33 55 77

2 2 FB0 4 4 FB1 6 6 FB2 8 8 FB3

R36 0

RSG0

R16

0

R0

0

R1

0

R2

0

R3

0

R4

R5

R6

R7

R8

R9

R10

R11

R12

R13

R14

R15

RSG1

R17

OPEN

R37 0

S5 BD04

11 33 55 77

2 2 RS0@ 4 4 RS1@ 6 6 RS2@ 8 8 RS3@

DNI

J8

PBC18SAAN

1
2
3
4
5 06 07 08 09 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18

1 D
C

R35

R34

R33

R32

R31

R30

R29

R28

R27

R26

R25

R24

R23

R22

R21

R20

PSEN0 PSEN1 PSEN2 PSEN3 PSEN4 PSEN5 PSEN6 PSEN7 PSEN8 PSEN9 PSEN10 PSEN11 PSEN12 PSEN13 PSEN14 PSEN15

R40

OPEN

R41

OPEN

R42

OPEN

R43

OPEN

R44

OPEN

R45

OPEN

R46

OPEN

VDD

R47

OPEN

R48

OPEN

R49

OPEN

R50

OPEN

R51

OPEN

R52

OPEN

R53

OPEN

R54

OPEN

R55

OPEN

S6 BD04

11 33 55 77

2 2 PSEN0@ 4 4 PSEN1@ 6 6 PSEN2@ 8 8 PSEN3@

DNI J11 PBC16SAAN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

B

100K

100K

100K

100K

100K

100K

100K

100K

100K

100K

100K

100K

100K

100K

100K

100K

R95

R94

R93

R92

R91

R90

R89

R88

R87

R86

R85

R84

R83

R82

R81

R80

A

PROJECT TITLE:

max34461a_evkit_b

DRAWING TITLE:

POWR SUPPLIES

SIZE
DD