TY72011AP2 查看數據表（PDF） - ON Semiconductor

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TY72011AP2

Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback

ON Semiconductor 

TY72011AP2

VCC Pin 13

Startup

HV 1

NC 2

Over Voltage

Protection (VCC > 40 V)

Last Pulse of Demag

after 4 ms

Internal VCC

Internal Regulator

UVLOH = 15 V

UVLOL = 9.3 V

14

13 VCC

Demag 3

FB 4

Ct 5

OVP 6

NC 7

DEMAG ?

Rf

Internal Clamp

Verr Max = 3 V

Ri

-

Verr Min = 10 mV

+

OVP

1/3

Clock

R Flip-Flop Q

+

-

2.5 V

D

Current Comparator

Driver

200 ns L.E.B

12 DRV

11 Isense

10 Gnd

Over Current

Protection (OCP)

V(-) < 1.5 V

+

-

1V

Verr

VCO Feedback

Toff = f (Verr)

Max Toff = f (Ct)

VCC Pin 8

4 x 10 V Zener

9 NC

8 NC

Lasts more than 128 ms?

--> Protection Circuitry

20 k

OVP

500

60 mV +

-

Figure 2. Simplified Block Diagram

http://onsemi.com

3

Free Datasheet http://www.datasheet-pdf.com/

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