LT3751 Просмотр технического описания (PDF) - Linear Technology

Номер в каталоге

Компоненты Описание

производитель

LT3751

Capacitor Charger Controller with Regulation

Linear Technology 

LT3751

BLOCK DIAGRAM

VTRANS

12V

+

47μF

×2

RVTRANS

40.2k

10μF

T1

1:10

D1

•

CHARGE

OFF ON

OTLO

START-UP

ONE SHOT

VCC

VCC

MASTER

12V

LATCH

10μF

100k DONE

SR

QQ

ENABLE

GATE

100k

DRIVER

FAULT

S R FAULT

Q Q LATCH

3.8V +

INTERNAL

UVLO

VCC –

VTRANS

RUVLO1

191k

UVLO1

+

55V

–

ROVLO1

240k

OVLO1

+

55V

–

RUVLO2

191k

UVLO2

VCC

UVLO/OVLO

COMPARATORS

+

55V

–

ROVLO2

240k

OVLO2

+

55V

VOUT

COMPARATOR

0.98V

REFERENCE

RVTRANS

60V

RVOUT

DCM

COMPARATOR

DCM

ONE SHOT

26kHz ONE SHOT

CLOCK

SQ

RQ

SWITCH

LATCH

DIFF. AMP

COMPARATOR

WITH

INTERNAL

60V CLAMPS

60V

RDCM

1.22V

REFERENCE

60V

VCC

GATE DRIVE

CIRCUITRY

HVGATE

CLAMP

VCC

•

RVOUT

40.2k

RDCM

18.2k

VDRAIN

M1

RESET

CLK AUXILIARY

COUNT

LVGATE

VCC

TO CHARGE

1-SHOT

COUNTER

162mV

+–

26kHz

ONE SHOT

MAIN

CSP

CLOCK

106mV CSN

+–

TIMING AND PEAK

CURRENT CONTROL 11mV TO 106mV

MODULATION

26kHz

ONE SHOT

CLOCK

ERROR

AMP

A1

1.22V

REFERENCE

RSENSE

12mΩ

–

1.22V

REFERENCE

TO VOUT

COMPARATOR

GND

RBG

RBG

1.33k

DIE

TEMP

160ºC

MODE

CONTROL

FB

3751 BD

10nF

VOUT

450V

+

COUT

RFBH

3.65M

RFBL

10k

3751f

9

Share Link: