Texas Instruments Evaluation Module for UCC28250 Advanced PWM Controller with Pre-Bias Operation UCC28250EVM-501 UCC28250EVM-501 데이터 시트
제품 코드
UCC28250EVM-501
User's Guide
SLUU429B – June 2010 – Revised December 2010
Half-Bridge DC-to-DC Converter With Primary-Side Control
1
Introduction
This EVM is to help evaluating UCC28250 PWM device with primary-side control in DC-to-DC symmetrical
half-bridge converter topology. The targeted application is telecom module design with nominal 48-V input.
UCC28250 is a PWM controller that can be used for primary-side control or secondary-side control. In this
EVM, the UCC28250 is placed at primary side to make primary-side control.
half-bridge converter topology. The targeted application is telecom module design with nominal 48-V input.
UCC28250 is a PWM controller that can be used for primary-side control or secondary-side control. In this
EVM, the UCC28250 is placed at primary side to make primary-side control.
2
Description
The EVM is a 75-W symmetrical half-bridge DC-to-DC converter that converts 36-V to 72-V DC to a
regulated output voltage 3.3 V and maximum 23-A load current.
regulated output voltage 3.3 V and maximum 23-A load current.
2.1
Typical Applications
•
Telecom power supplies with primary-side control
•
Server systems
•
Datacom
•
DSP’s, ASIC’s, and FPGA’s
2.2
Features
•
Start up directly from telecom telecom input voltage 36-V to 72-V DC.
•
Regulated output voltage 3.3 V with maximum 23-A load current.
•
Telecom basic isolation from primary to secondary 1500 V.
•
Output voltage regulation from no load to full load, and from low line to high line.
•
Control driven synchronous rectifier.
•
All surface mount components, double sided close to form factor of quarter brick.
•
Voltage mode control.
•
Remote Enable ON/OFF Function and manual switch.
•
Non-latching input over voltage protection.
•
Non-latching input under voltage protection.
•
Hiccup over current protection.
•
Test points to facilitate the devices evaluation.
2
Half-Bridge DC-to-DC Converter With Primary-Side Control
SLUU429B – June 2010 – Revised December 2010
© 2010, Texas Instruments Incorporated