R2A20118ASP Просмотр технического описания (PDF) - Renesas Electronics

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производитель

R2A20118ASP

Critical Conduction Mode Interleaved PFC Control IC

Renesas Electronics 

R2A20118ASP

Preliminary

Block Diagram

10 μA 10 μA

VREF

ZCD-M

ZCD COMP1

Clamp –

ZCD-S

+ –0.1 V ~ 4.5 V

Vzcd_lo = 1.3 V

250 mVhys

ZCD COMP2

Clamp –

+ VREF –0.1 V ~ 4.5 V

TL

3.2 μA

+TL COMP

LATCH

Stop

GD

3.2 V –

SQ

6.4 μA

R

Vcc reset

Hi: ON

VREF

BO

Stop GD

1.4 V + (BOUT)

–

7.5 μA

Hi: ON

RT

Ibo, Iramp

Tstart

+

– Vac_lo = 3.2 V

390 mVhys

VREF

RAMP-GAIN

10 μA

VREF

80 μA

0 to 240 μA

RAMP Iramp

Hi: ON

COMP

VREF: 5 V

UVLO

ON: 10.5 V

OFF: 9.3 V

VCC

GD-M

Logic

GD-S

VREF

5 μA

OCP COMP1

OCP-M

OCP-M

5 μA

OCP COMP2

OCP-S

OCP-S

0.3 V

GD Disable OVP2

OVP BLOCK

COMP

Discharge

FB

–

SW COMP +

ErrorAmp

–

RAMP AMP

+

2.5 V

OVP2

FB

2.275 V

(design spec)

VREF

10 μA

SS

0.9 V

(design spec)

UVL

BOUT

FBLOW

Hi: ON

GND

4.3 V

R03DS0002EJ0100 Rev.1.00

Jul 14, 2010

Page 3 of 9

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