MC34261 查看數據表（PDF） - ON Semiconductor

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MC34261

POWER FACTOR CONTROLLERS

ON Semiconductor 

MC34261, MC33261

Figure 15. 80 W Power Factor Controller

92 to RFI

138 Vac Filter

1 C6

D2 D4

D1 D3

2.2M

R7

0.01 7.5k

C2

R3

Delay

Current Sense

Comparator

3

6

Zero Current

Detector

2.5V

Reference

+

1.2V

+ 36V

100k

R8 1N4934

8

D6

+ 100

C5

+ 1.6V

6.7V

5

22k

R5

T

UVLO

+ 10V

Timer R

RS

Latch

Multiplier

16V

10

Drive

7

10

Output

10

R6

4

+ Error Amp

0.5mA

Vref

330 R4

1.0nF

C3

1

2

MUR130

D5

MTP

8N50E

VO

+

100

230V/

0.35A

C4

Q1

1.0M

R2

0.1

R9

11k

R1

0.68

C1

Power Factor Controller Test Data

AC Line Input

Current Harmonic Distortion (%)

Vrms

Pin

PF THD

2

3

5

7

VO(pp)

90

85.6 −0.998 2.4

0.11 0.52

1.3

0.67 10.0

100 85.1 −0.997 5.0 0.13 1.7

2.4

1.4

10.1

110 84.8 −0.997 5.3 0.12 2.5

2.6

1.5

10.2

120 84.5 −0.997 5.8 0.12 3.2

2.7

1.4

10.2

130 84.2 −0.996 6.6 0.12 4.0

2.8

1.5

10.2

138 84.1 −0.995 7.2 0.13 4.5

3.0

1.6

10.2

This data was taken with the test set−up shown in Figure 17.

T = Coilcraft N2881−A

Primary: 62 turns of # 22 AWG

Secondary: 5 turns of # 22 AWG

Core: Coilcraft PT2510, EE 25

Gap: 0.072″ total for a primary inductance of 320 μH

Heatsink = AAVID Engineering Inc. 5903B, or 5930B

DC Output

VO

IO

PO

230 0.350 80.5

230 0.350 80.5

230 0.350 80.5

230 0.350 80.5

230 0.350 80.5

230 0.350 80.5

n(%)

94.0

94.6

94.9

95.3

95.6

95.7

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