Datasheet

SLUU165A − November 2003 − Revised July 2004
4
UCC28514 User’s Guide
UCC28514 User’s Guide
Power Supply Control Produc
ts
Contents
1 Introduction 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Caution 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Schematic 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 List of Materials 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Reference Design Layout 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Electrical Characteristics 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Reference Design Performance 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Introduction
The UCC28514 module is a 100-W offline ac-to-dc voltage converter with power factor
correction (PFC). The prototype was designed to show how the UCC28514 could be configured
to control a dc-regulated output offline with one control integrated circuit. The module was
design to operate over a universal input range of 85 V to 265 V with a regulated 24-V, 100-W
output.
To correctly operate this EVM a fan is required to keep the ambient temperature at or below
40°C. Not keeping the temperature at or below 40°C could damage the EVM.
2 Caution
High-voltage levels are present on the evaluation module whenever it is energized. Proper
precautions must be taken when working with the module. The evaluation module has a large
energy storage capacitor and must be completely discharged before the module can be
handled. Serious injury can occur if proper safety precautions are not followed.