DC2199A-B: 24V @ 15A, 36 ~ 60V in, Buck

Summary

Demonstration circuit 2199A-B is a 360W isolated forward converter with synchronous rectification featuring the LTC3765/LTC3766 chip-set. It produces a regulated 24V, 15A output from an input voltage range of 36V to 60V.

This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attainable using these parts in an active-clamp-reset forward converter power supply, suitable for telecom, industrial, and other applications. It has a 4.7 inch squared solution footprint area. Synchronous rectification helps to attain an efficiency approaching 96%.

Secondary-side control eliminates complex opto-coupler feedback, providing fast transient response with minimum output capacitance. For other output requirements, see the LTC3765 and LTC3766 data sheets or contact the LTC sales.

Specifications

Manufacturer	Analog Devices Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	DC2199A-B-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Isolated
Voltage Out: Factory Set	24 V
Current Out	15 A
Voltage In	36 ~ 60 V
Efficiency @ Conditions	>95%, 60V in, 24V @ 9 ~ 15 A >95%, 48V in, 24V @ 9 ~ 15 A >95%, 36V in, 24V @ 6.5 ~ 15 A
Voltage Out Range	- Not Given
Features	Current Limit (Adj. or Fixed) LDO Regulator(s), On-Chip Over Current Protection Reverse Polarity Protection Soft Start Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	200 kHz
Standby Current [Typical]	210 µA
Quiescent Current [Typical]	5 mA
Component Count + Extras	96 + 31
Internal Switch	No
Design Author	Linear Technology
Application / Target Market	Automotive Battery Chargers Computers Servers Telecom
Standby Current [Maximum]	- Not Given
Quiescent Current [Maximum]	- Not Given
Main I.C. Base Part	LTC3765 LTC3766
Date Created By Author	2014-12
Date Added To Library	2017-04