Reference Design Library > AC/DC and DC/DC Conversion > DC/DC SMPS - Single Output > DC1198A-A: 12V @ 5A, 4.5 ~ 20V in

DC1198A-A: 12V @ 5A, 4.5 ~ 20V in

Summary

Demonstration circuit DC1198A-A features the LTM®4605EV, the high efficiency, high density switch mode buck-boost μModule® regulator. The LTM4605EV can regulate its output voltage from an input voltage above, below, or equal to the output. The input voltage range of DC1198A-A is from 4.5V to 20V with a preset output voltage of 12V. The rated load current is 5A, although derating is necessary for certain VIN, VOUT, and thermal conditions.

The switching frequency may be synchronized to an external clock from 200kHz to 400kHz. This PLL can be used not only to reduce undesirable frequency harmonics but also to parallel LTM4605 to provide high output current.

The LTM4605 data sheet must be read in conjunction with this demo manual prior to working on or modifying DC1198A-A.

Specifications

Manufacturer Analog Devices Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number DC1198A-A-ND
Eval Board Supplier Analog Devices Inc.
Eval Board Board not Stocked
Topology Step Up/Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 12 V
Current Out 5 A
Voltage In 4.5 ~ 20 V
Efficiency @ Conditions >95%, 12V in, 12V @ 1 ~ 12 A
>93%, 20V in, 12V @ 1 ~ 12 A
>90%, 5V in, 12V @ 0.2 ~ 4.3 A
Voltage Out Range - Fixed
Features Current Foldback Protection
Current Limit (Adj. or Fixed)
Light Load Mode
PFM or PWM
Power Good Output
Switching Frequency 300 kHz
Standby Current [Typical] 35 µA
Quiescent Current [Typical] 2.8 mA
Component Count + Extras 17 + 29
Internal Switch Yes
Design Author Linear Technology
Application / Target Market Automotive
Servers
Telecom
Standby Current [Maximum] 60 µA
Quiescent Current [Maximum]
Main I.C. Base Part LTM4605
Date Created By Author 2011-01
Date Added To Library 2012-05

Support Documents & Media

DC1198A-A - User Guide LTM4605 - Datasheet LTM4605 - Spice Models

Media

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