HT2811H datasheet(2/8 Pages) HOTCHIP

Numer części	HT2811H

Szczegółowy opis	PSR control, eliminates optocoupler and TL431

PDF	8 Pages

Scroll/Zoom	100%

Producent	HOTCHIP [Hotchip Technology Co.,Ltd]

Strona internetowa	http://www.hotchip.com.cn/English/Index/index.html

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2 / 8 page

HT2811H

2/8

High performance primary sensing regulator (PSR)

www.hotchip.com.cn

Ver1.0

PIN DEFINITION

SOP5

Name

Pin #

Description

VCC

Power supplying pin of the controller, In order to let

the controller gain more Stable supply voltage, the

external filter capacitor must use low equivalent im

-pedance (Low ESR) of the electrolytic capacitor.

Output feedback pin, to detect the output condition

through the auxiliary wind-ing voltage of the

transformer

Connect external primary current sensing resistor RCS,

the controller can detect the primary current through the

external sense resistor. When the voltage on the resistor

achieves the maximum value, the internal power BJT

will be turn off immediately

To connect the collector of internal power BJT

GND

The referring grounding pin of the controller

Ovp

osp

Regulator

Blas

Tonsec

Detector

cortrol

Drive

Control

Noise

suppressi

AC Voltage

Compensation

VCC

Startup&unlo

pmf

Tons

Logic

Tons

Buffer

Noise

Suppressio

Cable

Compensation

Peak current

control&Leb

GND

FUNCTIONAL BlOCK DIAGRAM

VCC

GND

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