TEA1507 데이터 시트보기 (PDF) - Philips Electronics

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TEA1507

GreenChipII SMPS control IC

Philips Electronics 

Philips Semiconductors

GreenChip™II SMPS control IC

Preliminary specification

TEA1507

APPLICATION INFORMATION

A converter with the TEA1507 consists of an input filter, a

transformer with a third winding (auxiliary), and an output

stage with a feedback circuit.

Capacitor CVCC (at pin 1) buffers the supply voltage of the

IC, which is powered via the high voltage rectified mains

during start-up and via the auxiliary winding during

operation.

A sense resistor converts the primary current into a

voltage at pin Isense (pin 5). The value of this sense resistor

defines the maximum primary peak current.

An application note is available: AN00047.

handbook, full pagewidth

Vmains

Vo

Ci

CVCC

CCTRL

RCTRL

VCC 1

8 DRAIN

GND 2

7 HVS n.c.

CTRL

TEA1507

3

6

DRIVER

DEM 4

5 Isense

RDEM

Np

Ns

Co

power

MOSFET

Rsense

Naux

MGU238

2000 Dec 05

Fig.10 Flyback configuration with secondary sensing.

13

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