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DAP011

PWM Current−Mode Controller for High−Power Universal Off−Line Supplies

ON Semiconductor 

DAP011/DAP011C

1

Latch 2

Timer 3

20 ms Time Constant

+

−

+

Vlatch

S

Q

Q

R

IpFlag Fault

VtimSS

+

−

+

4 V Reset

Soft−Start

Ended

VCC and Logic

Management

+−

Fault

Vtimfault

+

VDD

Itim

4V

Power

+

Reset

Reset

+

−

Skip, Soft−Start

VCCON

Jitter 4

VDD

IpFlag

Power On Reset

VCC(min)

VCClatch

Frequency

iCjit Modulation

VDD

65/100 kHz

Clock

+

−

2.iCjit

+

S

Q

Q

R

IC1

UVLO

VDD

Skip 5

Rskip

Iskip

+

Vskip −

VDD

RFB

FB 6

/3

Skip

Ramp

Fault/Startup

Skip

+

−

SS

IpFlag Iclamp

14 HV

13

12

11 Ref.

10 VCC

9 Drv

CS 7

LEB

Figure 2. Internal Circuit Architecture

8 GND

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3

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