ANALOG DEVICES LTM8080EY Dual 500mA or Single 1A Ultralow Noise Ultrahigh PSRR Module Regulator Instruction Manual

ANALOG DEVICES LTM8080EY Dual 500mA or Single 1A Ultralow Noise Ultrahigh

PSRR Module Regulator

DEMO MANUAL DC3071A
LTM8080EY
40VIN, Dual 500mA or Single 1A Ultralow Noise, Ultrahigh PSRR µModule Regulator

DESCRIPTION

Demonstration circuit 3071A features the LTM®8080 µModule® regulator, a complete, low input noise, ultrahigh PSRR solution with an intermediate power bus and dual output 0.5A LDO regulators, in a thermally enhanced, com-pact 9mm × 6.25mm × 3.32mm BGA package. DC3071A has a wide operating input range of 4V to 40V. Each of the two outputs is an adjustable 3.3V/0.5A. The operating output range is a wide 0V to 8V. DC3071A also allows for the LDOs to be paralleled up to 1A rail load current. The LTM8080 includes voltage tracking functionality, external frequency synchronization, and low input noise compliance with CISPR22 Class B. The built-in voltage tracking function automatically sets VBUS to either 2.5V nominal or 1V higher than VOUT1, whichever is greater, to achieve the best noise performance and minimize power dissipation. External frequency synchronization is available through the SYNC pin. It also features the power good feedback function for an adjustable power good threshold. The µModule regulator targets applications that require a complete switcher and LDO regulators solution with configurable output channels, power good protection fea-tures, and ultralow noise performance.

Design files for this circuit board are available.
All registered trademarks and trademarks are the property of their respective owners.

BOARD PHOTO

Part marking is either ink mark or laser mark

Specifications

PERFORMANCE SUMMARY Specifications are at TA = 25°C

SYMBOL| PARAMETER| CONDITIONS| MIN| TYP| MAX| UNITS
---|---|---|---|---|---|---
VIN| Input Supply Range| Continuous Operation, Free Air| 4.0|  | 40| V
VOUT1| Output Voltage 1|  | 3.3| V
VOUT2| Output Voltage 2|  | 3.3| V
IOUT1| Output Current 1|  | 0.5| A
IOUT2| Output Current 2|  | 0.5| A
POUT/PIN| Efficiency (See Figure 3)| VIN = 12V, VOUT = 3.3V, IOUT = 0.5A| 64.7| %

QUICK START PROCEDURE

Demonstration circuit 3071A is easy to set up to evalu-ate the performance of the LTM8080. See Figure 1 for the proper measurement equipment setup and follow the procedure below.

1. With the power off, place the jumpers as shown in the following positions.
   JUMPER| POSITION| FUNCTION
   ---|---|---
   JP1| ON| RUN
   JP2| BURST| SYNC

2. Before connecting the input supply, load, and meters, preset the input voltage supply to be between 4V to 40V. Then, preset the load currents to 0A.

3. With power off, connect the output loads between VOUT1 and GND, VOUT2 and GND, input voltage supply, respectively. (Initial load: no load). Refer to Figure 1.

4. Connect the DVMs to the input and outputs.

5. Turn on the input power supply and adjust the volt-age to 12V.
   NOTE: Make sure that the input voltage does not exceed 40V.

6. Check for the proper output voltages from VOUT1 to GND and VOUT2 to GND. The output voltage meters for each phase should display the programmed out-put voltage within ±2%.

7. Once the proper output voltage is established, adjust the load current from 0A to 500mA, VOUT should be within 3.234V to 3.366V.

8. Vary the input voltage from 4V to 40V, VOUT should be within 3.234V to 3.366V.

9. After completing all tests, adjust the load to 0A and power of the input power supply.

OPTIONAL: An input EMI filter is included on the board. To include this filter, connect the input supply positive terminal to VEMI. Connect the input positive supply to VIN to exclude the input EMI filter.

QUICK START PROCEDURE

TYPICAL TEST RESULTS

PARTS LIST

ITEM| QTY| REFERENCE| PART DESCRIPTION| MANUFACTURER/PART NUMBER
---|---|---|---|---

Required Circuit Components

CRCW0603453KFKEA
7| 1| R36| RES., 0Ω, 1/2W, 1210, AEC-Q200| VISHAY, CRCW12100000Z0EA
8| 1| C5| CAP., 0.1μF, X7R, 16V, 10%, 0603| MURATA, GRM188R71C104KA01D
9| 1| C9| CAP., 0.01μF, X7R, 16V, 10%, 0603| AVX, 0603YC103KAT2A
10| 1| C23| CAP., 4.7μF, X7R, 25V, 5%, 1206| KEMET, C1206C475J3RACTU
11| 1| C20| CAP., 4.7μF, X7R, 25V, 10%, 1206| AVX, 12063C475KAT2A
12| 3| C6, C7, C8| CAP., 4.7μF, X7S, 50V, 10%, 1206, AEC-Q200| MURATA, GCM31CC71H475KA03K
13| 2| C19, C21| CAP., 10μF, X7R, 16V, 10%, 1206, AEC-Q200| MURATA, GCM31CR71C106KA64L
14| 1| C2| CAP., 0.1μF, X7R, 50V, 10%, 0805| AVX, 08055C104KAT2A
15| 1| C1| CAP., 1μF, X7R, 50V, 10%, 0805| AVX, 08055C105KAT2A
16| 1| C13| CAP., 4.7μF, X5R, 16V, 10%, 0805| AVX, 0805YD475KAT2A
17| 1| C12| CAP., 47μF, X5R, 16V, 20%, 1210| AVX, 1210YD476MAT2A
18| 1| C3| CAP., 4.7μF, X5R, 50V, 10%, 1206| TAIYO YUDEN, UMK316BJ475KL-T
19| 1| C4| CAP., 22μF, ALUM. ELECT., 63V, 20%, 6.3mm × 7.7mm, CE-BS| SUN ELECTRONIC INDUSTRIES CORP, 63CE22BS
20| 1| RFB1| IND., 220Ω AT 100MHz, FERRITE BEAD, 3A, 40mΩ, 0805, NO SUBS. ALLOWED| TDK, MPZ2012S221AT000
21| 1| D1| DIODE, ZENER, 3.6V, 250mW, SOD323| CENTRAL SEMI., CMDZ3L6 TR PBFREE
22| 1| U1| IC, STEP-DOWN CONTROLLER, BGA-48| ANALOG DEVICES, LTM8080EY#PBF

Additional Demo Board Circuit Components

1| 0| R8, R17, R18| RES., OPTION, 0603|
---|---|---|---|---
2| 0| C18, C22| CAP., OPTION, 1206|

Hardware: For Demo Board Only

1| 1| JP1| CONN., HDR., MALE, 1×3, 2mm, VERT, STR, THT| SULLINS CONNECTOR SOLUTIONS, NRPN031PAEN-RC
---|---|---|---|---
2| 1| JP2| CONN., HDR, MALE, 2×4, 2mm, VERT, STR, THT| SAMTEC, TMM-104-02-L-D
3| 2| J2, J7| CONN., RF, BNC, RCPT, JACK, 5-PIN, ST, THT, 50Ω| AMPHENOL RF, 112404
4| 2| XJP1, XJP2| CONN., SHUNT, FEMALE, 2-POS., 2mm| WURTH ELEKTRONIK, 60800213421
5| 14| E1-E6, E8-E15| TEST POINT, TURRET, 0.094″ MTG. HOLE, PCB 0.062″ THK| MILL-MAX, 2501-2-00-80-00-00-07-0
6| 1| PCB1| PCB, DC3071A| ADI APPROVED SUPPLIER, 600-DC3071A
7| 4| MP5-MP8| STANDOFF, NYLON, SNAP-ON, 0.25″ (6.4mm)| KEYSTONE, 8831

WURTH ELECTRONICS, 702931000

8| 1| STNCL1| TOOL, STENCIL, DC3071A| ANALOG DEVICES, 830-DC3071A
9| 1| LB1| LABEL SPEC, DEMO BOARD SERIAL NUMBER| BRADY, THT-96-717-10

SCHEMATIC DIAGRAM

REVISION HISTORY

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

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