DC770C: 50V @ 4A, 10 ~ 28V in, Boost

Summary

Demonstration circuit DC770C is a DC/DC boost converter featuring the LT3782A constant frequency current mode boost controller. The DC770C operates over 10V to 28V input and provides 4A of output current at 50V output. The 250 kHz constant frequency operation results in a small and efficient circuit. The converter provides high output voltage accuracy (typically ±3%) over wide load range with no minimum load requirement.

The demonstration circuit can be easily modified to generate different output voltages. Please consult LTC factory for details.

The DC770C has a small circuit footprint. It is a high performance and cost effective solution for Telecom, Automotive and Power-Over-Ethernet applications.

Specifications

Manufacturer	Analog Devices Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	DC770C-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Topology	Step Up
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	50 V
Current Out	4 A
Voltage In	10 ~ 28 V
Efficiency @ Conditions	- Not Given
Voltage Out Range	- Fixed
Features	Current Limit (Adj. or Fixed) Soft Start Under Voltage Protection, Brown-Out
Switching Frequency	250 kHz
Standby Current [Typical]	40 µA
Quiescent Current [Typical]	11 mA
Component Count + Extras	48 + 15
Internal Switch	No
Design Author	Linear Technology
Application / Target Market	Power: Auxiliary Power Supply Power: Industrial Power Telecom
Standby Current [Maximum]	90 µA
Quiescent Current [Maximum]	16 mA
Main I.C. Base Part	LT3782A
Date Created By Author	2009-01
Date Added To Library	2015-07