NCP1601ADR2 查看數據表（PDF） - ON Semiconductor

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NCP1601ADR2

Compact Fixed Frequency Discontinuous or Critical Conduction Voltage Mode Power Factor Correction Controller

ON Semiconductor 

NCP1601A, NCP1601B

AC

EMI

Input Filter

15 V

FB VCC

Vcontrol Drv

Ramp GND

CS Osc

NCP1601X

Output

Figure 1. Typical Application Circuit

L

Output Voltage (Vout)

AC

Input

EMI

Filter

Cfilter

RCS

Cbulk

RFB

on

off

IS

IFB

1

FB / SD 9 V

Current

V reg

Mirror

VCC

VCC

RS

VCC(on) / 9 V

96% Iref Iref IFB

8

Regulation Block

18 V

+−

UVLO

Overvoltage

Protection

VCC &

(IFB > 107% Iref)

Shutdown / UVP

Reference

(IFB < 8% Iref)

Block

Zero Current

Internal Bias

Detection

(IS < 14 mA)

CS

4

9V

Current

Mirror

Overcurrent

Protection

(IS > 203 mA)

300 k

Vcontrol Processing

+

9V

−

C1

R1

R2

R3

01

C3

&

− Vton

PFC +

Modulation

Thermal

Shutdown

(95 / 140 °C)

OR

3.9 Vmax

clamp

Ich

1 0 9V

Osc / Sync

5

COSC

9V

45 mA

94 mA

+

−

5 / 3.5 V

01

&

SQ

R

delay

R

SQ

VCC

Output

Driver

Oscillator / Synchronization Block

Vcontrol

2

Ccontrol

Ramp

3

Cramp

Drv

7

GND

6

Figure 2. Functional Block Diagram

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