SIP11206 datasheet(1/19 Pages) VISHAY

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Vishay Siliconix

SiP11206

Document Number: 69232

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

www.vishay.com

1

Half-Bridge Controller with Primary MOSFET Drivers for

Intermediate Bus Converters

FEATURES

•

36 V to 75 V input voltage range

•

Withstand 100 V, 100 ms transient capability

•

Integrated ± 1.6 A typical high- and low-side MOSFET

drivers

•

Oscillator frequency is programmable from 200 kHz to

1 MHz and can be externally synchronized

•

High voltage pre-regulator operates during start-up

•

Current sensing on primary low-side switch

•

Hiccup mode

•

System low input voltage detection

•

Chip UVLO function

•

Programmable soft-start function

•

Over temperature protection (160 °C)

• Greater than 95 % efficiency

APPLICATIONS

•

Intermediate bus architectures

•

Telecom and Datacom

•

Routers and servers

•

Storage area network

•

Base station

• 1/8 and 1/4 bricks

DESCRIPTION

SiP11206 is a controller for the primary side of a half-bridge

intermediate bus converter (IBC). It is ideally suited for

isolated applications such as telecom, data communications

and other products requiring an IBC architecture and

conversion of standard bus voltages such as 48 V to a lower

intermediate voltage, where high efficiency is required at low

output voltages (24 V, 12 V, 9 V or 5 V).

Designed to operate within the telecom voltage range of

36 V to 75 V and withstand 100 V transients for a period of

100 ms, the IC is designed for controlling and driving both

the low- and high-side switching devices of a half-bridge

converter.

The SiP11206 operates with a fixed duty cycle to provide the

highest efficiency over a wide input voltage range. SiP11206

has advanced current monitoring and control circuitry, which

allows the user to set the maximum current in the primary

circuit. This feature acts as protection against overcurrent,

output short circuit. Current sensing is by means of a sense

resistor connected in series with the primary low-side

MOSFET.

TYPICAL APPLICATION CIRCUIT

Vo-

Vin+

Vo+

Vin-

VINDET

1

VIN

2

VCC

3

COMP

4

CS

5

AGND

6

VREF

7

ROSC

8

BST

16

DH

15

LX

14

DL

13

PGND

12

SS

11

RDB

10

COSC

9

SiP11206

36 V to 75 V

100 V/100 ms

RDB

Số phần tương tự - SIP11206

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Vishay Siliconix	SIP11206	341Kb / 19P	Half-Bridge Controller with Primary MOSFET Drivers for Intermediate Bus Converters 04-Aug-08
Vishay Siliconix	SIP11206	341Kb / 19P	Half-Bridge Controller with Primary MOSFET Drivers for Intermediate Bus Converters 04-Aug-08

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