MP44019

– CRM/DCM MULTI-MODE PFC CONTROLLER WITH SECOND OVP

MP44019 Rev. 1.0

MonolithicPower.com

14

4/30/2021

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© 2021 MPS. All Rights Reserved.

FUNCTIONAL BLOCK DIAGRAM

FB

COMP

UVLO

10.7V/8.6V

GATE

VCC

GND

Blanking

22µs

R

S

Q

0.75V

0.25V

UVP

PWM

tON_MAX

GM

COM

MAINSIN

ZCD

LEB

LEB Time

300ns

0.5V

+

-

OCL

PWM

SOFF

Q

SOFF

2.7V/2.6V

OVP

+

-

+

-

0.36V/0.4V

+

-

+

-

R

S Q

TCD

TCD

kVAC

2

RAMP Circuit

THD

Improver

THD_DIS

60mV/

120mV

Burst

0.75V

+

-

OCP

LEB Time

250ns

OCL

OCP

OVP

BURST

STOP

UVP

+

-

STOP

TSD

FAULT

FAULT

FAULT

OTP

ZCD/CS

VAC_PK

2

x

kVAC

2

Peak

Holder

+

-

2.35V/2.05V

UVLO

PFOK

STOP

PFOK

2R

R

0.8V

+

-

50ms

BI/BO

1V/0.9V

R

S Q

PWM

OCP

Restart =

180µs

Consecutive

Count = 3

+

-

2nd OVP

2.5V

PWM

OCP

Timer =

80ms

UVLO

Blank

55µs

BIBO

OCP

DT

COMP

Blanking

22µs

2.7V/2.6V

OVP2

+

-

OVP2

Figure 1: Functional Block Diagram