No

Yes

Variable

Resonant

Quasi-

Resonant

EMI

Troubling?

Need higher

efficiency?

Operating

Mode

No

Yes

Do you

need low

Standby

power?

Low End

High End

Please visit our website at www.onsemi.com for additional options.

What

features

do you

need?

No

Yes

Is Your Input

Power Above

25 W?

L

I

G

H

T

I

N

G

Page 3

Power Conversion Solutions

Power Factor Controllers

Minimize THD and Maximize PF and Efficiency. . .

IEC 1000-3-2 standards set regulations to limit the harmonics injected into the AC line by any equipment drawing

more than 75 W of input power for class D equipment (TV sets, PC monitors, desktop PCs) and 25 W for class C

equipment (lighting). A front-end Power Factor Controller is then required in these power supplies. Adding such a

stage can lead to difficulties in meeting other regulatory requirements (standby and active power) unless you make

judicious design choices.

Above challenges have been fully understood by ON Semiconductor which steadily releases innovative PFC controllers matching designers’

wishes of simple, compact and robust solutions. These new PFCs represent perfect solutions in various applications such as Flat TVs, ATX

Power supply & Servers, Telecom and Industrial SMPS where cost will, of course, always be a primary factor, but where you can also base

differentiation on performance.

1

8

2

7

3

6

4

5

R6

2.85k

L1

600 H

L4

150 H

R10

10k

R2

470k

R3

56k

C7

100nF

C11

1 F

Type

=X2

C13

4.7nF

Type

=Y1

C12

4.7nF Type=Y1

C6

1nF

C5

1nF

R7

0.1

R1

4.5

C8

1nF

R4

4.7M

C9

100nF

C1

100nF

Type=X2

U1

KBU6K

C15

680nF

C2*

100 F

*C2 Type = Snap-In 450V

390V

12V

C4

22 F

M1

SPP20N60S5

C3

100nF

R5

680k

R8

680k

R9

560k

D1

CS004060

L

N EARTH

MC

90-265VAC

NCP1653

Key Features & Benefits

NCP1653

Demo Board

NCP1653 – 300 W PFC Front-Stage

POWER

FACTOR

CONTROLLERS

Device

Max

Output

Power

(W)

Topology

Mode

Operation Mode

Package(s)

MC33260

300

Boost

Voltage

4

4

4

4

SOIC-8, PDIP-8

MC33262

200

Boost

Current

4

4

SOIC-8, PDIP-8

MC33368

300

Boost

Current

4

4

4

SOIC-16, PDIP-16

NCP1601

400

Boost

Fixed Freq Voltage

4

4

4

4

4

SOIC-8, PDIP-8

NCP1606

200

Boost

Voltage

4

4

4

4

SOIC-8, PDIP-8

NCP1603

250

Current

4

4

4

4

4

4

SOIC-16

NCP1651

250

1-Stage Flyback

Average Current

4

4

4

SOIC-16

NCP1652

250

1-Stage Flyback

Average Current

4

4

4

4

SOIC-16

NCP1653

1000

Boost

Average Current

4

4

4

4

4

4

SOIC-8, PDIP-8

NCP1650

5000

Boost

Average Current

4

4

4

4

4

4

4

SOIC-16

1. Continuous Conduction Mode 2. Discontinuous Conduction Mode 3. Overvoltage Protection 4. Undervoltage Protection 5. NCP1603 – combination of NCP1601 & NCP1203 6. Critical Conduction Mode

~

Solutions for both Critical Conduction Mode and Continuous

Conduction Mode

i

Design flexibility and better applications coverage

~

Follower Boost Mode Capability

i

Flexibility & Compactness as well as Cost reduction

~

Fixed frequency & Synchronization capability

i

Smoother EMI & Flexibility

~

Low consumption during start-up and shutdown mode

i

Help Meet Low Stand-by Power Requirements

~

Several Integrated protections such as

i

Design flexibility and rugged design