VISHAY SiP32419EVB Evaluation Board User Manual

VISHAY SiP32419EVB Evaluation Board

Product Information

Specifications

• Product Name: SiP32419EVB, SiP32429EVB
• Manufacturer: Vishay Siliconix
• Load Switch Type: 56 m switch
• Operating Voltage Range: 6 V to 28 V
• Package Size: DFN10 3 mm x 3 mm
• Input Capacitance: 10 F
• Input Capacitor Voltage Rating: 50 V or higher
• Enable Pin Voltage Rating: 6 V (do not apply a voltage higher than 5 V)

Description
The SiP32419EVB and SiP32429EVB are load switches that integrate multiple control features to simplify circuitry design and increase reliability. They are designed to operate in the voltage range of 6 V to 28 V. These switches have an internally generated gate drive voltage for good RON linearity over the input voltage operating range. They also feature a slew rate control circuit that controls the switch turn-on time.

Connection and Signal Test Points
This device has a low voltage control logic interface that can be controlled without level shifting. It also includes a power-good flag. The SiP32419EVB and SiP32429EVB are available in a space-efficient DFN10 3 mm x 3 mm package.

Power Input and Output Terminals
The power header terminals are designed for easy connection to the power supply and the load for evaluation. The input voltage range for this evaluation is from 6 V to 24 V.

• Power Input Terminal: Connect the power supply to this terminal.
• Power Output Terminal: Connect the load to this terminal.

Input Capacitor and Output Capacitor
The input capacitors (C1 to C6) and output capacitors (C7, C8) should be mounted close to the device to ensure stable voltage right before and after the SiP32419EVB and SiP32429EVB load switch. The capacitance of these capacitors should be 10 F, and the voltage rating for both input and output capacitors should be 50 V or higher. The devices can operate normally up to 28 V, so it is important to use capacitors rated at 35 V or higher for both input and output.

Enable Terminal
The header J6 is directly connected to the EN pin for the enable function of the device. The voltage rating of the EN pin is 6 V. To ensure design margin, never apply a voltage higher than 5 V to this enable pin. The enable threshold voltage is 1.5 V, and the disable threshold voltage is 0.4 V or lower.

Fault Flag and Power Good Flag
These features are not described in detail in the provided text extract. Please refer to the complete user manual for more information.

Over Current Limit Setting
The SiP32419 and SiP32429 devices provide over-current limit protection. The current limit setting resistor (RSET) can be calculated using the following formula:

• ILIM = 1.24 V x 5000 / RSET

Where:

• RSET is the value of resistor R5 on the board.
• ILIM is the target’s current limit setting.

Programmable Soft Power Up
The SiP32419EVB and SiP32429EVB devices have a programmable soft power-up feature. The soft power time is not only a function of ISS and CSS but also of the load current and current limiting setting. More information on how to utilize this feature can be found in the complete user manual.

Frequently Asked Questions (FAQ)

• Q: What is the operating voltage range of the SiP32419EVB and SiP32429EVB?
  A: The operating voltage range is from 6 V to 28 V.

• Q: What is the capacitance of the input and output capacitors?
  A: The capacitance of both the input and output capacitors should be 10 F.

• Q: What is the voltage rating for the input and output capacitors?
  A: The voltage rating for both the input and output capacitors should be 50 V or higher.

• Q: What is the voltage rating of the enable pin?
  A: The voltage rating of the enable pin is 6 V. Do not apply a voltage higher than 5 V to this pin.

DESCRIPTION

SiP32419EVB and SiP32429EVB are a load switch that integrates multiple control features that simplify the design and increase the reliability of the circuitry connected to the switch. The SiP32419EVB and SiP32429EVB are a 56 mswitch designed to operate in the 6 V to 28 V range. An internally generated gate drive voltage ensures good RON linearity over the input voltage operating range. The SiP32419EVB and SiP32429EVB have a slew rate control circuit that controls the switch turn-on time to the value set by an external capacitor.

After soft start, an over-current protection circuit (OCP) continuously monitors the current through the load switch and controls the switch impedance to limit the current to the level programmed by an external resistor. If the over-current condition persists for more than 7 ms, the switch shuts off automatically. The SiP32419EVB and SiP32429EVB have an over-temperature protection circuit (OTP) which will shut the switch off if the junction temperature exceeds about 145 °C. The OTP circuit will release the switch when the temperature has decreased by about 20 °C of hysteresis.

CONNECTION AND SIGNAL TEST POINTS

When the device is at OCP fault condition for over 8 ms the power switch will turn off, and the FLG pin will be pulled low. In case of OT fault condition, the power switch will be off immediately. The FLG pin will be pulled low. For the SiP32429EVB, the fault flag will release 150 ms after the fault condition is cleared, and the switch will turn on at the programmed slew rate. For the SiP32419EVB, the switch will remain off and the fault flag will remain on. The power switch can be reset by toggling EN or input power recycle if over temperature fault is removed.
This device features a low voltage control logic interface which can be controlled without the need for level shifting.
These devices also include a power good flag. The SiP32419EVB and SiP32429EVB are available in a space-efficient DFN10 3 mm x 3 mm package.

SiP32419EVB, SiP32429EVB EVALUATION BOARD
SiP32419EVB and SiP32429EVB demo board is designed to evaluate the over- current protection and programmable soft star function of the device.

POWER INPUT AND OUTPUT TERMINALS
These power header terminals are designed to easily hood up to the power supply and the load for the evaluation (see fig. 1). The input voltage range for this evaluation is from 6 V to 24 V.

INPUT CAPACITOR AND OUTPUT CAPACITOR

The input capacitors (C1 to C6) and output capacitors (C7, C8) are mounted close to the device to ensure stable voltage right before and after the SiP32419EVB and SiP32429EVB load switch (see Fig. 2). The capacitances of these capacitors are 10 μF. The voltage rating for the input and output capacitors is 50 V. SiP32419EVB and SiP32429EVB devices can operate normally up to 28 V. It is important to use the 35 V or higher rated capacitor for the input and output capacitors.

ENABLE TERMINAL
The header J6 is directly connected to the EN pin for the enable function of the device (see Fig. 2). The voltage rating of the EN pin is 6 V. To have the design margin, never apply a voltage higher than 5 V to this enable pin. The enable threshold voltage is 1.5 V and the disable threshold voltage is 0.4 V or lower.

FAULT FLAG AND POWER GOOD FLAG

SiP32419EVB and SiP32429EVB devices have the fault flag and power good flag to indicate the operation status of the device. The header J11 is connected to the fault flag of the device. The header J15 is connected power good of the device (see Fig. 2). Both flags are open drain pins of the device. An external bias voltage is required to header J1 and J3 to ensure proper operation of this flag. This external bias voltage can be provided by the input voltage by shorting jumpers J2 and J4 because the voltage rating of the power good and fault flag are 28 V maximum.

OVER-CURRENT LIMIT SETTING
One of the key features of the SiP32419 and SiP32429 is to provide over- current limit protection. Current limit setting resistor RSET can be calculated by the following formula to set the current of the device:

Where:

• RSET is R5 on the board.
• ILIM is the target’s current limit setting.

PROGRAMMABLE SOFT POWER-UP
Soft power-up is another feature of SiP32419EVB and SiP32429EVB devices. The soft power time is not only the function of ISS and CSS but it also is the function load current and current limiting setting.

The soft power time can be calculated by the following formula:

Where:

• Δt is the soft power-up time
• ΔVOUT is the output voltage power-up range
• ISS is the built-in current to charge up CSS. The value is 5 μA CSS is the soft power setting capacitor shown as C9 on the board
• RSET is the current limit resistor, which is C5 on the board ROUT is the output resistor

EVALUATION BOARD SCHEMATIC

SiP32419EVB, SiP32429EVB EVALUATION BOARD SCHEMATIC

EVALUATION BOARD LAYOUT

BILL OF MATERIAL

DESIGNATOR| QTY| VALUE| DESCRIPTION| PACKAGE| MANUFACTURER PART NUMBER| MANUFACTURER
C1, C2, C3, C4, C5, C6, C7, C8| 8| 10 μF| CAP CER 10 μF 35 V X7R 1210| 1210| GRM32ER7YA106KA12L| Murata
C9| 1| 47 nF| CAP CER 0.047 μF 35 V X7R 0603| 0603| GMJ107BB7473KAHT| Taiyo Yuden
D1| 1| –| DIODE ZENER 30 V 1.25 W DO214AC| DO214AC| BZG03C30TR| Vishay
D2| 1| –| DIODE SCHOTTKY 30 V 2 A DO214AC| DO214AC| SSA23L-E3/61T| Vishay
R1| 1| 10| RES SMD 10 W 1% 1/8 W 0805| 0805| CRCW080510R0FKEA| Vishay
R2, R4| 2| 51 kW| RES SMD 51 kW 1% 1/10 W 0603| 0603| CRCW060351K0FKEA| Vishay
R3| 1| 10 kW| RES SMD 10 kW 1% 1/8 W 0805| 0805| CRCW080510K0FKEA| Vishay
R5| 1| 4.12 kW (1)| RES SMD 4.12 kW 0.1% 1/10 W 0603| 0603| TNPW06034K12BEEA| Vishay
R6| –| –| “Do Not Populate”| 0603| –| –
RL1| –| –| “Do Not Populate”| 1206| –| –
RL2, RL3| –| –| “Do Not Populate”| 2515| –| –
RSENNSE| 1| 50 mW| RES SMD 0.05 W 1% 1/2 W 1206| 1206| RCWE120650L0FNEA| Vishay
Q1| 1| SiRA00| MOSFET N-CH 30 V 100 A PPAK SO-8| PPAK SO-8| SIRA00DP-T1-GE3| Vishay
U1| 1| SiP32419 SiP32429| IC LOAD SW LVL SHIFT 10DFN| TDFN10| SIP32429DN-T1-GE4| Vishay
J1, J3, J5, J6, J11, J12, J13, J15, J18, J19, J20, J21, J22, J23| ****

14

| ****

–

| ****

TEST POINT PC MINI 0.040″D WHITE

| ****

TP30

| ****

5002

| ****

Keystone Electronics

J2, J4, J9, J10, J17, J24| 6| Jumper| SIL VERTICAL PC TAIL PIN HEADER| SIP2| M20-9990246| xx
J7, J8, J14, J16| 4| –| JACK NON-INSULATED 0.218″| Banana| 575-4| Keystone Electronics

Note
Please refer to the marking on the board for the actual R5 value.

LAB EXPERIMENT RESULT

Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and reliability data, see www.vishay.com/ppg?75689.

Contact Information

• For technical questions, contact: powerictechsupport@vishay.com.

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000.

References

• Vishay Intertechnology: Passives & Discrete Semiconductors

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