40a digital megadlynx, Non-isolated dc-dc power modules, Module – GE Industrial Solutions 40A Digital MegaDLynx User Manual

Page 31: Data sheet, Example application circuit

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GE

Data Sheet

40A Digital MegaDLynx

TM

: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.45Vdc to 2.0Vdc output; 40A Output Current

April 24, 2013

©2012 General Electric Company. All rights reserved.

Page 31

Example Application Circuit

Requirements:
Vin:

12V

Vout:

1.8V

Iout:

30A max., worst case load transient is from 20A to 30A

Vout:

1.5% of Vout (27mV) for worst case load transient

Vin, ripple 1.5% of Vin (180mV, p-p)

CI1

Decoupling cap - 1x0.01

F/16V ceramic capacitor (e.g. Murata LLL185R71E103MA01)

CI2

3x22

F/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20)

CI3

470

F/16V bulk electrolytic

CO1

Decoupling cap - 1x0.01

F/16V ceramic capacitor (e.g. Murata LLL185R71E103MA01)

CO2

4 x 47µF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19)

CO3

6 X330µF/6.3V Polymer (e.g. Sanyo Poscap)

CTune

5600pF ceramic capacitor (can be 1206, 0805 or 0603 size)

RTune

220 ohms SMT resistor (can be 1206, 0805 or 0603 size)

RTrim

10k

SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)

Note: The DATA, CLK and SMBALRT pins do not have any pull-up resistors inside the module. Typically, the SMBus master
controller will have the pull-up resistors as well as provide the driving source for these signals.

RADDR0

DATA

CLK

VS-

RADDR1

GND

Vin+

CI3

CO3

ADDR0

VOUT

VS+

GND

TRIM

CTUNE

RTUNE

RTrim

VIN

CO1

CI1

Vout+

ON/OFF

SEQ

SMBALRT#

MODULE

PGOOD

ADDR1

SIG_GND

SYNC

CI2

CO2

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