SIP11205 datasheet(2/21 Pages) VISHAY

2 / 21 page

www.vishay.com

Document Number: 69233

S-81795-Rev. C, 04-Aug-08

Vishay Siliconix

SiP11205

TECHNICAL DESCRIPTION

SiP11205 is a feed-forward controller on the primary side of

a half-bridge intermediate bus converter. With 100 V

depletion mode MOSFET in the chip, the SiP11205 is

capable of being powered directly from the high voltage bus

to VCC through an external PNP pass transistor, or may be

Without the use of an external pass transistor, failure of the

converter output to power VCC above the VREG level will

result in over temperature protection activating hiccup

operation whenever the pre-regulator power dissipation

becomes excessive.

The external high- and low-side N-Channel power MOSFETs

are driven by a built-in driver with ± 1.6 A peak current

capability.

SiP11205

available

the

MLP44-16

PowerPAK® package and TSSOP-16 PowerPAK® package

and is specified over the ambient temperature range of

- 40 °C to 85 °C.

SIP11205 BLOCK DIAGRAM

Level

Shift

Pre Reg

Driver

Control

OSC

PWM Comp

Hi-side driver

Low-side driver

OTP

VIN

VCC

ROSC

VREF

PGND

Ramp

BST

UVLO

Over Current protection

AGND

VINDET

VCC

0.13 V

COSC

IDSS

ISS

0.85 VSS

1.2 V+V INDET /2

VREF

ISS

250 mV

IDSS

IBIAS

DMAX

COMP

RDB

VREF

IBIAS

VSD

0.200 V

VINDET/2

VUV

SS Comp

VREG

SIP11205 Datasheet(PDF) 2 Page - Vishay Siliconix

SIP11205 Datasheet(HTML) 2 Page - Vishay Siliconix

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Datasheet Download

Link URL