NCP1653A Просмотр технического описания (PDF) - ON Semiconductor

Номер в каталоге

Компоненты Описание

производитель

NCP1653A

Compact, Fixed−Frequency,Continuous Conduction Mode PFC Controller

ON Semiconductor 

AC

Input

EMI

Filter

NCP1653, NCP1653A

Iin

Vin

L IL

Cfilter

RCS IL

Output Voltage (Vout)

Cbulk

RFB

on

off

IFB

1

FB / SD 9 V

Current

Mirror

VCC

VCC

13.25 V

/ 8.7 V

UVLO

−

8

+

18 V

&

Vreg

96% Iref Iref IFB 0

1

Regulation Block

Overvoltage

Protection

(IFB > 107% Iref)

Shutdown / UVP

(IFB < 8% Iref)

4% Iref Hysteresis

300 k

10

Vcontrol

2

9V

Ccontrol

Icontrol =

Vcontrol

R1

R1 = constant

Current

Mirror

Rvac

VM

5

IM

9V

Turn on

CM RM

Ich

Cramp

0

Gnd

6

VCC

Reference Block

Internal Bias

Thermal

Shutdown

(120 / 150 °C)

Vref PFC

Modulation

−

+

+

1

Vramp

67 or 100 kHz clock

Overpower

Limitation

(IS Ivac > 3 nA2)

VM =

RMISIvac

2 Icontrol

12 k

9V

x

In

3

Ivac

Cvac

Overcurrent

Protection

(IS > 200 mA)

OR

RQ

S

Current

Mirror

VCC 9 V

Output

Driver

CS IS

4

RS

Drv

7

Figure 2. Functional Block Diagram

http://onsemi.com

2

Share Link: