ISL6446 데이터 시트보기 (PDF) - Renesas Electronics

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ISL6446

Dual (180°Out-of-Phase) PWM and Linear Controller

Renesas Electronics 

ISL6446

Block Diagram

REFERENCE

BIAS CURRENT

30µA 100µA 0.6V

VCC

VCC

POWER-ON

RESET

AND CONTROL

COMP1

FB1

SS1/EN1

SS2/EN2

FB2

COMP2

-

0.6V +

VCC5

VCC5

30µA

30µA

0.6V +

-

FAULT1

UVP1

OVP1

PG1

EN1

SS1

STARTUP

SS1 EN1

SS2 EN2

FAULT2

UVP2

OVP2

PG2

EN2

SS2

RT

PGOOD

PG1

PG2

PG3

VIN

5V LINEAR

REGULATOR

PWM1

+

-

RAMP1

0°

CLOCK AND

SAWTOOTH

GENERATOR

RAMP2

180°

- PWM2

+

110µA

VCC

UVP1

OVP1

PG1

EN1

OUTPUT1

DRIVERS

GATE CONTROL

LOGIC VCC

DEAD TIME

CONTROL

OVERCURRENT

PGND

OCSET1

BOOT1

UGATE1

PHASE1

LGATE1

110µA

VCC

UVP2

OVP2

PG2

EN2

OUTPUT2

DRIVERS

GATE CONTROL

LOGIC VCC

DEAD TIME

CONTROL

OVERCURRENT

PGND

FAULT3

PG3 LCFB

OCSET2

BOOT2

UGATE2

PHASE2

LGATE2

gm*VE

- 0.6V

+

LCFB

LCDR

SGND

FN7944 Rev 2.00

October 12, 2015

FIGURE 3. BLOCK DIAGRAM

PGND

Page 4 of 19

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