DC823B-A: 1.2V ~ 5V @ 10A, 4.5V ~ 20V in

Summary

Demonstration circuit DC823B-A features the LTM®4600EV, a 10A high efficiency, high density switch mode step-down power module. The input voltage is from 4.5V to 20V. The output voltage is programmable from 0.6V to 5V. The rated load current is 10A, while derating is necessary for different VIN, VOUT, and thermal conditions.

Integrated input and output filters enable a simple PCB layout. Only bulk input and output capacitors are needed.

The LTM4600 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC823B-A.

Specifications

Manufacturer Analog Devices Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number 505-DC823B-A-ND
Eval Board Supplier Analog Devices Inc.
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 0.6 V
1.2 V
1.5 V
1.8 V
2.5 V
3.3 V
5 V
Current Out 10 A
Voltage In 4.5 ~ 20 V
Efficiency @ Conditions >89%, 5V in, 2.5V @ 1 ~ 8 A
>88%, 12V in, 3.3V @ 4 ~ 10 A
>87%, 12V in, 2.5V @ 4 ~ 10 A
>85%, 5V in, 1.5V @ 0.5 ~ 8 A
>81%, 12V in, 1.5V @ 3 ~ 10 A
>80%, 5V in, 1.2V @ 0.5 ~ 9 A
>78%, 12V in, 1.2V @ 3 ~ 10 A
Voltage Out Range 0.6 ~ 5 V
Features Internal Inductor
Power Good Output
Shutdown, Enable, Standby
Soft Start
Switching Frequency 850 kHz
Standby Current [Typical] 35 µA
Quiescent Current [Typical] 52 mA
Component Count + Extras 10 + 37
Internal Switch Yes
Design Author Linear Technology
Application / Target Market Point of Load (PoL)
Telecom
Standby Current [Maximum] 75 µA
Quiescent Current [Maximum] 52 mA
Main I.C. Base Part LTM4600EV
Date Created By Author
Date Added To Library 2011-03

Eval Board

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Support Documents & Media

LTM4600 - Datasheet AN103 - LTM4600 DC/DC µModule Thermal Performance DC823B-A - User Guide LTM4600 - LTspice Demo Circuit

Media

DC823B_A_Schematic_Full.JPG DC823B_A_Board_Full.JPG DC823B_A_Chart_1_Full.JPG DC823B_A_Chart_2_Full.JPG