Copyright Cirrus Logi(All Rights Reserwww.cirrus.com

Actual Size:254mm x 44mm

AC LineInput

CDB150x-00

CS1500 90W, High-efficiency PFC Demonstration Board

Features

Variable On Time, Variable Frequency, DCM PFC Controller

Line Voltage Range: 90 to 265 VAC RMS

Output voltage: 400 V

Rated Pout: 90 W

Efficiency: 97% @ 90 W, 230 VAC

No-load Power Dissipation: <0.3 W

Low Component Count

Supports Cirrus Logic Product CS1500

General Description

The CDB150x-00 board demonstrates the performanceof the CS1500 digital PFC controller with a 90 watt out-put at a link voltage of 400 volts.

ORDERING INFORMATION

CDB150x-00 PFC Demonstration Board - Supports CS1500

c, Inc. 2011ved)

RegulatedDC Output

FEB ‘11DS948DB1

CDB150x-00

Contacting Cirrus Logic SupportFor all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to yougo to www.cirrus.com

IMPORTANT NOTICE

Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subjectto change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevantinformation to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of salesupplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrusfor the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of thirdparties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights,copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and givesconsent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This con-sent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP-ERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FORUSE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHERCRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISKAND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANT-ABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMEROR CUSTOMER'S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE,TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, IN-CLUDING ATTORNEYS' FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.

Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarksor service marks of their respective owners.

IMPORTANT SAFETY INSTRUCTIONS Read and follow all safety instructions prior to using this demonstration board.

This Engineering Evaluation Unit or Demonstration Board must only be used for assessing IC performance in a laboratory setting. This product is not intended for any other use or incorporation into products for sale.

This product must only be used by qualified technicians or professionals who are trained in the safety procedures associated with the use of demonstration boards.

Risk of Electric Shock • The direct connection to the AC power line and the open and unprotected boards present a serious risk of electric

shock and can cause serious injury or death. Extreme caution needs to be exercised while handling this board.

• Avoid contact with the exposed conductor or terminals of components on the board. High voltage is present on exposed conductor and it may be present on terminals of any components directly or indirectly connected to the AC line.

• Dangerous voltages and/or currents may be internally generated and accessible at various points across the board.

• Charged capacitors store high voltage, even after the circuit has been disconnected from the AC line.

• Make sure that the power source is off before wiring any connection. Make sure that all connectors are well connected before the power source is on.

• Follow all laboratory safety procedures established by your employer and relevant safety regulations and guidelines, such as the ones listed under, OSHA General Industry Regulations - Subpart S and NFPA 70E.

Suitable eye protection must be worn when working with or around demonstration boards. Always comply with your employer’s policies regarding the use of personal protective equipment.

All components, heat sinks or metallic parts may be extremely hot to touch when electrically active.

Heatsinking is required for Q1. The end product should use tar pitch or an equivalent compound for this purpose. For lab evaluation purposes, a fan is recommended to provide adequate cooling.

2 DS948DB1

CDB150x-00

1. INTRODUCTION

The CS1500 is a high-performance Variable Frequency Discontinuous Conduction Mode (VF-DCM), ac-tive Power Factor Correction (PFC) controller, optimized to deliver the lowest system cost in switchedmode power supply (SMPS) applications. The CS1500 uses a digital control algorithm that is optimizedfor high efficiency and near-unity power factor over a wide input voltage range (90-265 VAC).

Using an adaptive digital control algorithm, both the ON time and the switching frequency are varied on acycle-by-cycle basis over the entire AC line to achieve close-to-unity power factor. The feedback loop isclosed through an integrated digital control system within the IC.

The variation in switching frequency also provides a spread-frequency spectrum, thus minimizing the con-ducted EMI filtering requirements. Burst mode control minimizes the light-load/standby losses. Protectionfeatures such as overvoltage, overpower, open circuit, overtemperature, and brownout help protect thedevice during abnormal transient conditions.

For startup in to a constant power load (CPL), the inductor value is multiplied by the following formula:

where Vacmin is the peak of the minimum AC input voltage, and Vlink is the DC output voltage of the PFC.

This equation does not affect operation in constant power, if load is applied once Vlink has risen to its nom-inal value.

The CDB150x-00 board demonstrates the performance of the CS1500 with input voltage range of 90-265VAC, typically seen in universal input applications. This board has been designed for 400V Vlink, 90Watts, full load.

Extreme caution needs to be exercised while handling this board. This board is to be used by trained pro-fessionals only. Prior to applying AC power to the CDB150x-00 board, the CS1500 needs to be biasedusing an external 13 VDC power supply.

This document provides the schematic for the board. It includes oscilloscope screen shots that indicateoperating waveforms. Graphs are also provided that document the performance of the board in terms ofEfficiency vs. Load, Total Harmonic Distortion vs. Load, and Power Factor vs. Load for the CS1500 PFCcontroller IC.

Lcpl 2.04Vacmin

Vlink-----------------×=

DS948DB1 3

CDB150x-00

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4 DS948DB1

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0012

7-Z1

AIN

D 1

mH

1.3

A ±

15%

TO

R V

ER

T N

Pb

TH0

L4B

OU

RN

S21

24-V

-RC

DO

NO

T P

OP

ULA

TE, S

horte

d w

ith #

28 A

WG

wire

2405

0-00

051-

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80uH

10:

1 P

FC B

OO

ST

NP

b TH

1L5

RE

NC

OR

LCS

-100

7E

CO

805

2530

4-00

004-

Z1A

SP

CR

STA

ND

OFF

4-4

0 TH

R .5

00"L

NP

b4

MH

1 M

H2

MH

3 M

H4

KE

YS

TON

E22

03R

EQ

UIR

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SC

RE

W 4

-40X

5X16

" PH

STE

EL

2603

6-00

008-

Z1A

THE

RM

30

OH

M 1

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5%

NP

b R

AD

0N

TC1

GE

SE

NS

ING

CL-

210

DO

NO

T P

OP

ULA

TE, S

horte

d w

ith #

28 A

WG

wire

2703

6-00

008-

Z1A

THE

RM

30

OH

M 1

.5A

5%

NP

b R

AD

0N

TC2

GE

SE

NS

ING

CL-

210

DO

NO

T P

OP

ULA

TE, S

horte

d w

ith #

28 w

ire

2807

1-00

083-

Z1A

TRA

N M

OS

FET

nCH

12A

500

V N

Pb

TO22

01

Q1

ST

MIC

RO

ELE

CTR

ON

ICS

STP

12N

M50

FP

2902

0-06

374-

Z1A

RE

S 1

M O

HM

1/4

W ±

1% N

Pb

1206

6R

1 R

2 R

3 R

13 R

14 R

15D

ALE

CR

CW

1206

1M00

FKE

A30

000-

0000

4-Z1

AN

O P

OP

RE

S N

Pb

1206

0R

4 R

5 R

6 R

11 R

17 R

18 R

21 R

22N

O P

OP

NP

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S-1

206

DO

NO

T P

OP

ULA

TE31

020-

0638

9-Z1

AR

ES

4.7

OH

M 1

/4W

±1%

NP

b 12

061

R7

DA

LEC

RC

W12

064R

70FK

EA

3202

0-06

310-

Z1A

RE

S 2

0K O

HM

1/4

W ±

1% N

Pb

1206

FIL

M1

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DA

LEC

RC

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0620

K0F

KE

A33

030-

0009

2-Z1

AR

ES

0.1

OH

M 3

W ±

1% W

W IS

EN

NP

b A

XL

0R

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HM

ITE

13FR

100E

DO

NO

T P

OP

ULA

TE, S

horte

d w

ith #

28 w

ire

3402

1-01

186-

Z1A

RE

S 1

OH

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W ±

5% N

Pb

2512

FIL

M0

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DA

LEC

RC

W25

121R

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EG

DO

NO

T P

OP

ULA

TE35

020-

0227

3-Z1

AR

ES

0 O

HM

1/4

W N

Pb

1206

FIL

M3

R12

R16

R23

DA

LEC

RC

W12

0600

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EA

3602

0-02

502-

Z1A

RE

S 1

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HM

1/4

W ±

1% N

Pb

1206

FIL

M1

R19

DA

LEC

RC

W12

0610

0RFK

EA

3702

0-02

616-

Z1A

RE

S 1

k O

HM

1/4

W ±

1% N

Pb

1206

FIL

M1

R20

DA

LEC

RC

W12

061K

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EA

3811

0-00

025-

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CO

N T

ES

T P

T .1

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PLA

TE W

HT

NP

b7

TP2

TP3

TP4

TP5

TP6

TP7

TP8

KE

YS

TON

E50

0239

065-

0032

8-Z2

A1

IC C

RU

S L

PW

R F

AC

TOR

CO

RR

NP

b S

OIC

80

U1

CIR

RU

S L

OG

ICC

S15

01-F

SZ/

A1

DO

NO

T P

OP

ULA

TE40

065-

0027

6-Z5

C1

IC C

RU

S L

PW

R F

AC

TOR

CO

RR

NP

b S

OIC

81

U2

CIR

RU

S L

OG

ICC

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SZ/

C1

4103

6-00

006-

Z1A

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RIS

TOR

300

V 4

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14m

m N

Pb

RA

D1

VZ

LITT

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US

EV

300L

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AP

4231

1-00

025-

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NK

TO

220

MO

UN

TIN

G K

IT N

Pb

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HS

1A

AV

ID T

HE

RM

ALL

OY

4880

GIN

CLU

DE

S A

LL M

OU

NTI

NG

HA

RD

WA

RE

4330

0-00

025-

Z1A

SC

RE

W 4

-40X

5/16

" PH

MA

CH

SS

NP

b4

XM

H1

XM

H2

XM

H3

XM

H4

BU

ILD

ING

FA

STE

NE

RS

PM

SS

S 4

40 0

031

PH

SC

RE

WS

FO

R S

TAN

DO

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4442

2-00

013-

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BA

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DU

CT

ID A

ND

RE

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CIR

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S L

OG

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2-00

013-

0145

603-

0047

3-Z1

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AS

SY

DW

G C

DB

150X

-0X

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Pb

RE

FC

IRR

US

LO

GIC

603-

0047

3-Z1

EC

O80

5/E

CO

824

4624

0-00

473-

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PC

B C

DB

150X

-0X

-Z-N

Pb

1C

IRR

US

LO

GIC

240-

0047

3-Z1

EC

O80

547

600-

0047

3-Z1

BS

CH

EM

CD

B15

0X-0

0-Z-

NP

bR

EF

CIR

RU

S L

OG

IC60

0-00

473-

Z1E

CO

805

4808

0-00

036-

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WIR

E 2

2AW

G 1

9/34

STR

BLK

105

C N

P1

ALP

HA

WIR

E C

OM

PA

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5855

BK

005

EC

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4, S

EE

AS

SY

DW

G49

080-

0000

2-01

AW

IRE

28/

1 A

WG

, KY

NA

R M

OD

, 500

FT

1S

QU

IRE

SL

500

UL1

422

28/1

BLU

EC

O82

4, S

EE

AS

SY

DW

G

DS948DB1 5

CDB150x-00

4. BOARD LAYOUT

Fig

ure

2.

To

p S

ilk

scr

een

6 DS948DB1

CDB150x-00

Fig

ure

3.

Bo

tto

m R

ou

tin

g

Fig

ure

4.

Bo

tto

m S

ilks

cre

en

Fig

ure

5.

Bo

tto

m S

old

er

Pa

ste

Ma

sk

DS948DB1 7

CDB150x-00

5. PERFORMANCE PLOTS

0

5

10

15

20

25

0 10 20 30 40 50 60 70 80 90 100

THD

(%)

Output Power (W)

Vin=110Vin=220

88

90

92

94

96

98

0 10 20 30 40 50 60 70 80 90 100

������������

������������

Vin=110Vin=220

Figure 6. Efficiency vs. Load at 110 VAC, 220 VAC

Figure 7. Distortion vs. Load at 110 VAC, 220 VAC

8 DS948DB1

CDB150x-00

0.35

0.45

0.55

0.65

0.75

0.85

0.95

0 10 20 30 40 50 60 70 80 90 100

Pow

er F

acto

r

Output Power (W)

Vin=110Vin=220

390

392

394

396

398

400

402

404

406

408

410

0 10 20 30 40 50 60 70 80 90 100

V lin

k(V

)

Output Power (W)

Vin=110Vin=220

Figure 8. Power Factor vs. Load at 110 VAC, 220 VAC

Figure 9. Vlink vs. Output Power at 110 VAC, 220 VAC

DS948DB1 9

CDB150x-00

Figure 10. Steady State Waveforms — 110 VAC

Figure 11. Switching Frequency Profile at Peak of AC Line Voltage — 110 VAC

10 DS948DB1

CDB150x-00

Figure 12. Switching Frequency Profile at Trough of AC Line Voltage — 110 VAC

Figure 13. Steady State Waveforms — 220 VAC

DS948DB1 11

CDB150x-00

Figure 14. Switching Frequency Profile at Peak of AC Line Voltage — 220 VAC

Figure 15. Switching Frequency Profile at Trough of AC Line Voltage — 220 VAC

12 DS948DB1

CDB150x-00

Figure 16. Load Transient — 9 W to 90 W, 1 W/uS, 110 VAC

Figure 17. Load Transient — 90 W to 9 W, 1 W/uS, 110 VAC

DS948DB1 13

CDB150x-00

Figure 18. Load Transient — 9 W to 90 W, 1 W/uS, 220 VAC

Figure 19. Load Transient — 90 W to 9 W, 1 W/uS, 220 VAC

14 DS948DB1

CDB150x-00

6. REVISION HISTORY

Revision Date Changes

DB1 FEB 2011 Initial Release.

DS948DB1 15

CDB150x-00

This Page Intentionally Blank

16 DS948DB1