HA16141P/FP, HA16142P/FP

Rev.5.00 Jun 15, 2005 page 4 of 17

System Diagram

CAO

VCC

CT

3.3n

36k

VREF

Rec+

1.8m

Q1

B+

B+ OUT

GND

(385V dc)

T1

+

Rec

−

PWM-RES

PFC-DT

+B HIGH

RAMP

22.2V

100

220p

IAC

×1

Gain Selector

Over

Current

Detector

Integrator

Latch Block

910k

K

2.7k

0.1

(5W)

TIM

PG

PFC

-CS

PFC

-EO

47n

750k

PFC

-FB

PFC

-ON

GND

Note: The constants for the external components are for reference. Please confirm the operation when designing the system.

4.7n

From

VRB(B+monitor)

55k

−0.5V

VREF

−

+

−

+

+

−

+

−

+

+B LOW

PFC-OFF

PWM-OFF

Circuit Ground Level

2.5V

2.75V

2.60V

2.5V

RB

3.83V

3.63V

R

Q

Supervisor

K = 0.25

S

R

PWM-RES

Q

S

R

Q

S

H

UVLO

L

H

VREF

GOOD

VREF

GOOD

VREF

GOOD

Gate Driver

±1.5A(PEAK)

Gate Driver

±1A(PEAK)

UVL

L

5V VREF

Generator

5V Internal Bias

−

+

−

+

−

K = 0.05

LOGIC

2.34V

1.70V

+

−

1.5V

1.2V

0.1

µ

51k

5.1k

VREF

Enable to

secondary

33k

720k

2.2

µ

+

−

1V

0.3V

5V

4V

VCC

LOGIC

2.5V

+

−

+

−

PWM

-CS

2R

R

5RB

VCC

0.1

(1W)

1

(1W)

To T1

To

Q1 gate

From PFC-OUT

From

Q2 drain

To

PFC-FB

Current Monitor

Unit R:

Ω

C: F

+

−

+

−

7.1V

0.1

µ

38.2

µ

3V

26.2

µ

5.2

µ

Q

S

R

Q

R

S

+

−

−

+

O.C

VREF

PWM

-EO

PWM

-OUT

PFC

-OUT

1n

0.1

µ

0.47

µ

470

µ

(600V)

1n

51k

+

4.7

µ

570k

(1/2W)

710k

VRB

4.7k

100kHz

3.4V

0.65V

200kHz

Oscillator

500ns

10

µs

5

µs

1

µs (HA16141)

2.3

µs (HA16142)

820k

10n

HA16141 only

External parts of

PWM-EO pin are

applies to HA16141

only.