STSR30 datasheet(5/10 Pages) STMICROELECTRONICS

部件名	STSR30

功能描述	SYNCHRONOUS RECTIFIER SMART DRIVER FOR FLYBACK

PDF	10 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

5 / 10 page

STSR30

5/10

Figure 1 : TIMING DIAGRAM

Figure 2 : STSR30 IN FLYBACK CONVERTER SECONDARY SIDE

NOTES

1) Ceramic Capacitors C1 and C2 must be placed very close to the IC;

2) R1 andR2set theanticipationtimeby partitioning theVCC voltage;

3) R3 is a pull-up resistor;

4) R5 limits the current flowing through diode D2 when Freewheeling drain voltage is high;

5) D1 could be necessary to protect INHIBIT pin from negative voltages.

6) D2 could be necessary to protect INHIBIT pin from voltages higher than VCC

7) SGLGND layout trace must not include OUTGATE current paths.

+5V

Cout

100nF

TRANSFORMER

MosfetN

100nF

STSR30

INHIBIT

SGLGND

SETANT

PWM

Feedback

Loop

option

Low = OFF

High = ON

STSR30 数据表(PDF) 5 Page - STMicroelectronics