STEVAL-IPB001V1: 2W, 24V @ 83mA, 106 ~ 848 VAC

Summary

This document describes how to design a 3-phase (106 ~ 848 VAC) power supply with the UC3845B PWM driver and the new STC04IE170 ESBT as main switch. It is associated with the release of the STEVAL-IPB001V1 demo board.

The design is a complete solution for the 2 W single output SMPS, which is widely used as a power supply in breaker applications. However, the design method can also be applied to an SMPS suitable for 3-phase power metering applications, as it can easily be upgraded for higher output power.

In this report particular attention has been paid to the ESBT base driving circuit, where some useful methods have been investigated to better optimize power dissipation.

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Single Output
Eval Board Part Number	497-5863-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Board not Stocked
AC Voltage	115 V 230 V Universal (115 / 230V) 190 V 208 V 277 V 347 V 380 V 400 V 415 V 480 V 600 V
Outputs and Type	1 Isolated
Voltage Out	24 V
Current Out	83 mA
Output Power	2 W
Features	Under Voltage Protection, Brown-Out Voltage Reference
Efficiency @ Conditions	>80%, 110V in, 24V @ 83 mA >60%, 760V in, 24V @ 83 mA
No-load Input Power @ Voltage	- Not Given
Switching Frequency	50 kHz
Internal Switch	No
Component Count + Extras	37 + 2
Voltage In	106 ~ 848 VAC
Design Author	STMicroelectronics
Application / Target Market	Breaker Power: Auxiliary Power Supply RF: Metering
Main I.C. Base Part	STC04IE170 UC3845B
Date Created By Author
Date Added To Library	2024-11