Datasheet > CS5651/D

CS5651/D

更新时间： 2024-11-10 23:43:51

品牌	Logo	应用领域
其他 - ETC		控制器
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8页	83K
描述
High Performance Dual Channel Current Mode Controller with ENABLE

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CS5651/D 数据手册

CS5651

High Performance Dual Channel

Current Mode Controller with ENABLE

Description

Features

The CS5651 is a high performance,

current totem pole outputs ideally

suited for driving power MOSFETs.

One of the outputs, V_OUT2is switch-

able via the ENABLE₂pin.

ꢀ Oscillator has Precise

Duty Cycle

fixed frequency, dual current mode

controller specifically designed for

Off-Line and DC to DC converter

applications. It offers the designer a

cost effective solution with minimal

external components. This integrat-

ed circuit features a unique oscilla-

tor for precise duty cycle limit and

frequency control, a temperature

compensated reference, two high

gain error amplifiers, two current

sensing comparators, and two high

Limit and Frequency

Control

ꢀ 500kHz Current Mode

Also included are protective fea-

tures consisting of input and refer-

ence undervoltage lockouts, each

with hysteresis; cycle-by-cycle cur-

rent limiting; and a latch for single

pulse metering of each output.

Operation

ꢀ Automatic Feed Forward

Compensation

ꢀ Separate Latching PWMs

for Cycle-By-Cycle

Current Limiting

The CS5651 is pin compatible with

the MC34065H.

ꢀ Internally Trimmed

Reference with

Undervoltage Lockout

Block Diagram

ꢀ Switchable Second

V_CC

Output

ꢀ Two High Current Totem

Pole Outputs

V_CC

Undervoltage

Lockout

5.0V Ref

REF

ꢀ Input Undervoltage

Lockout with Hysteresis

V_REF

Undervoltage

Lockout

OUT

SYNC

Latching

PWM 1

Oscillator

Package Options

Sense

Error

Amp 1

16L PDIP & SO Wide

COMP

OUT

SYNC

Latching

PWM 2

ENABLE

REF

ENABLE

Sense

Error

Amp 2

12 COMP2

COMP

11 Sense

COMP

SENSE

OUT

Gnd

Pwr Gnd

Gnd

ON Semiconductor

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885–3600 Fax: (401)885–5786

N. American Technical Support: 800-282-9855

Web Site: www.cherry–semi.com

June, 1999 - Rev. 5

12 3 4 5 6 7 8

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