DC1307A: 12V @ 4A, 16 ~ 60V in

Summary

Demonstration circuit 1307A features the LTM®8027 configured to deliver 12V from a 16V to 60V input. The wide input range of the LTM8027 allows a variety of input sources such as automotive batteries, wall adaptors and industrial supplies.

The LTM8027 is a step down converter, so a minimum amount of headroom is required to keep the output in regulation. A soft-start feature controls the output voltage slew rate at start-up, reducing current surges and voltage overshoots. The current mode control scheme creates fast transient response and good loop stability.

The LTM8027 data sheet gives a complete description of the part, operation and application information. The data sheet must be read in conjunction with this manual before working on or modifying demo circuit 1307A.

Specifications

Manufacturer Analog Devices Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Board not Stocked
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 12 V
Current Out 4 A
Voltage In 16 ~ 60 V
Efficiency @ Conditions >92%, 60V in, 12V @ 1.5 ~ 4 A
>92%, 24V in, 12V @ 1 ~ 4 A
>90%, 36V in, 12V @ 1.1 ~ 4 A
Voltage Out Range - Not Given
Features Short Circuit Protection
Shutdown, Enable, Standby
Soft Start
Synchronizable
Switching Frequency 300 kHz
Standby Current [Typical] 9 µA
Quiescent Current [Typical] 39 mA
Component Count + Extras 10 + 14
Internal Switch Yes
Design Author Linear Technology
Application / Target Market Automotive
Avionic
Point of Load (PoL)
Telecom
Standby Current [Maximum]
Quiescent Current [Maximum]
Main I.C. Base Part LTM8027
Date Created By Author
Date Added To Library 2011-03

Support Documents & Media

DC1307A - User Guide LTM8027 - LTspice Demo Circuit LTM8027 - Datasheet

Media

DC1307A_Schematic_Full.PNG DC1307A_Board_Full.JPG DC1307A_Chart_1_Full.PNG