17PW26 Power Supply

SANYO Europe Ltd. Technical Training Department UK

Technical Overview

July, 2009-v1

Copyright© SANYO Electric Co., Ltd. All Rights Reserved 20072

Layout Diagram

Power Factor Correction

AC input Standby SMP transformer

Half Bridge transformer (Run supplies)

AC mains filter

PL816 +24V Backlight inverter switched supplies

Standby & Run Supplies

PL804 +5V & +12V switched supplies

Copyright© SANYO Electric Co., Ltd. All Rights Reserved 20073

17PW26 Layout

IC803 Half Bridge (Run supplies)

IC806 Stby SMP IC811 Stby switching optoIC829 5V Stby Reg

IC802 PFC SMT (Print side) Q827 +12V Rectifier

Q828 +24V Rectifier

Copyright© SANYO Electric Co., Ltd. All Rights Reserved 20074

17PW26 Basic operation

The 17PW26 power supply circuitry is very similar to the 17PW20 and operates in the same way.

Please refer to the 17PW26 circuit diagram. (next page).

Standby Mode

The standby circuit is a switch mode supply (IC806) which supplies always 3.3v and 5V supplies

(via 5v Regulator IC829) to supply the CPU, NVM, IR & Keypad.

A VF main 12V output is also fed from D807/C801 to switching transistor Q844.

Q844 is controlled via opto coupler IC811 from the CPU (PL816 Pin 6) to provide standby / run switching.

Run Mode

When Q844 is switched on it supplies VCC2 to IC802 (Power factor correction) and VCC1 IC830(half bridge).

The switched run supply secondary voltages are then established.

Protection

Q837 FET is connected to pin 2 of IC830. If any of the protection circuits operate, pin 2 is pulled low.

IC803 will then cease outputting drive pulses and the run supplies will not be present.

Various protection circuits feed into the gate of Q837, as can be seen from the circuit diagram.

10k

R865

10k

R864

TCET110G

IC809

1

23

4 1kR871

+12V

10kR872

+24V

4k7

R875

33k

R877

47RR873

MTP6N60E/SSP7N60AQ813

MTP6N60E/SSP7N60AQ814

10RR861

10RR860

50V

100n

C833

47k

R836

1kV

1n

C842

27R

R869

50V

100n

C841

6k8R868

8k2

R867

50V

33u

C840

BC848BQ807

BC

848B

Q812BC848B

Q810

BC858BQ811

100kR855

4k7R856

12kR857

47k

R862

4k7

R858

1N4148_SOD123

D811

33k

R859

50V

100n

C839

33kR863

10kR866

10kR852

100kR850

470R

R849

C15V

_S

OD

123

D809

A 1K 2

1N4148_SOD123

D805

50V

10u

C826

3k3

R843

VFB

50V100n

C845

VFB

35V

1000u

C850

16V

1000u

C851

+12V

+24V

50V2n2

C849

30kR876

5k1R870

50V

1n

C846

Freq

Freq

L811

150n

C800

250V

0R

47

R830

IRF7314

IC802

1 S1

3 S2 6D2A

8D1A

2 G1

4 G2

7D1

5D2

16V

1u

C808

50V

10n

C805

15RR823

F800

FUSE_RADIAL

VA

R-5

10V

R801

450V150uC819

27k

R820

2k7

R815

27k

R803

MTP6N60E/SSP7N60A

Q803

330kR819

+400V

+400V

TCET110G

IC811

1

23

4

50V

10u

C814

47k

R822

10kR893

BC848BQ805

4kV2n2

C847

+3.3VSTBY

+400V

+5VSTBY

160V

1u

C853

C33_S

OD

123

D821

A 1K 2 +33V

16V

1000u

C863

VCC_3V3_ON47k

R828

100RR846

3k3

R839

16V

100u

C837

S801BC848B

Q806

+3.3VSTBY

BC848B

Q804ST_BY

50V

100n

C824

+24V

+12V

PL801

1

2

3

4

5

6

7

8

9

10

DIM_PWM_ANALOG

+24V

PL802

1

2

3

4

5

6

7

8

9

10

11

12

A/D_DIM_SEL

+12V

ON/OFF

VF

_M

AIN

1k8

R826

1k8

R831

BC848B

Q802

3k3

R838

10kR834

RS1008_SOD123

D807

50V1nC856

1k

R879

+3.3VSTBY

6V34700uC818

3kR880

50V33uC801

1k8

R881

VF_MAIN

50V100nC830

100RR825

Opto

6V32200uC860

10kR882

3k3R883

22u

L804

4kV2n2

C813

22R

R884

Opto

630V10n

C810

10k

R887

100R

R888

BA159

D823

100R

R889

25V220uC817

100RR890

TCET110GIC801

1

23

4

35V

1000u

C852

0R

47

R829

VCC1

C3V9_SOD123

D826A1

K2

4k7

R891

10kR892

3k3R824

47kR897

BC848BQ818

SW_OFF

SW_OFF

1MR914

RS1008_SOD123

D832

1kR921

10kR918

220k

R917

47k

R919BC848BQ820

BC858BQ822

VCC1

VCC1

47kR910

1MR940

50V

100n

C868

BC848BQ808

SW_OFF2

SW_OFF2

1MR913

PFC_OFF

1u

C870

16V

330kR818

100k

R931

4kV

2n2

C873

1M

R932

2X

12m

TR

802

1 4

2 3

16V

10u

C874

12kR933

N1 N2

PRI SECSMPS-RESONANT_PFCTR806

1

4 8532

7

6

9

10 11 12

+400V

VCC2

33R

R832

100k

R941

630V

12n

C878

1kR874

BC

848B

Q830

560k

R942

47kR944

100k

R945

10k

R946

56kR947

12k

R948

1k8

R949

470RR952

20RR953

16V1uC883

+12V_2

+12V_2

BC848BQ831

BC848BQ833

C6V8_SOD123

D847A1

K2 +5V

+12SV

1N4148_SOD123

D842

100k

R959

1M

R915

330kR817

16V

1u

C886

16V

1u

C887

450V1uC802

210u

L802

4M7

R960

GNDCAP1

NTGS3446

IC824

1 D1

3 G 4S

6D4

2 D2 5D3

10kR833

TNY266

IC806

1 BP

3 S2 6NC

8S4

2 S1

4 EN/UV

7S3

5D

PL809

1

2

+12SV

6k8R962

100k

R964

BC848BQ834

22kR965

10k

R966 D854 +24V

50V10u

C892

47kR970

0R

47

R971

50V

100n

C894

1N4148_SOD123

D857

1kR972

BSH103Q837

15k

R973

1kR974

470RR976

50V

2n2

C898

BC848BQ838

10k

R977

1k5

R978

220kR979

BC858B

Q839

1kV

10n

C902

1kV

10n

C903

1MR982

1MR981

1MR980

BC858B

Q841

16V

1u

C904

BA

T54J

D861

TL431SAMF2D819

TL431SAMF2

D851

TL431SAMF2

D850

25V

4700u

C911

10k

R1002

10k

R1001

10k

R1000

10k

R999

10k

R998

10k

R997

10k

R996

120RR1003

16V

1u

C913

1N

4148_S

OD

123

D865

78L05_TO92IC829

1VOUT

2GND

3

L816

1kV

470p

C914

20R

R1006

20R

R1007

20R

R1008

20R

R1009

20R

R1010

20R

R1011

SMPS_MINIDVB_SINGLE_RANGE

TR803

4C

1A

1026V

916V

8GND

73V3

65V

5AC_GND

3NC

2B

10k

R1012

4k7R1013

1N4148_SOD123

D862

1MR912

AC1

AC2

AC1 AC2

AC1

+3.3VSTBY

+12V_2

+12V

SW1

ST_BY

SW1

SW2

100RR1014

50V47n

C915

SW2

VCC1

VCC2

STPS_3P_10L60CFP

Q816

STPS_3P_10L60CFP

Q815

STPS_3P_10L60CFPQ828

PFC_OFF

50V33pC916

ZCD

ZCD

CS1

CS1

120k

R1015

ZCD

STPS_3P_10L60CFP

Q827

C5V1_SOD123

D866

4kV

2n2

C917

1RR1016

4kV

2n2

C918

GNDCAP

1kV

1n

C919

50V220p

C920

50V220p

C921

C8V

2_S

OD

123

D867

RS1008_SOD123

D869

16V

10u

C922

2k7

R878

250V

47u

C924

47kR920

+12SV

+24V

VC

C1

RS1008_SOD123

D875

16V

1u

C928

Off1

BAV99D876

1kV

1n

C893

BA

V99

D877

50V100nC929

50V100nC930

BAV70

D878

Freq

Off1

Fre

q

Off1

16V

1000u

C809

50V100n

C804

C6V

8_S

OD

123

D801

+12V

5k6

R804

6V

32200u

C811

BC

848C

Q800

3k

R800

IRF7314

IC800

1S1

3S26 D2A

8 D1A

2G1

4G2

7 D1

5 D2

+5V

1N4148_SOD123

D802

15k

R808

330R_100MHZ_3A

L803

+5V

1R5R812

1R5R811

1kR809

16V1uC803

16V1uC807

56R

R810

VAR-510VR814

33RR802

22u

L800

IRF7314

IC803

1 S1

3 S2 6D2A

8D1A

2 G1

4 G2

7D1

5D2

+12V

BL_ON/OFF

+3.3VSTBY

UF5402

D879

BD

138

Q844

RS

1008_S

OD

123

D880

+24V

10R

TH1

SMPS_TFT_EER35_RES

TR810

1

4

8

5

3

2

7

6

9

10

11

12

13

14

15

16

GNDCAP

BYV27-200

D881

35V470uC931

+30V

1N5406

D882

1N5406

D883

2k2

R1017

2k2R1020 +12V

RS1008_SOD123

D884

1N4148_SOD123

D885

22RR1021

22RR1022

33R

R1023

S817

PL804

1

2

3

4

5

6

PL812

1

PL

80

0

1

PL

81

3

1

PL

81

4

1

GNDCAP

GNDCAP1

22u

L817

22u

L818

4kV

2n2

C933

GNDCAP1

VCC1

C12V_SOD123

D886

2k4R1024

10kR1025

390R

R1026

ON

/OF

F

100kR1027

+24V

2k4R1028

680k

R1029

S818

VF_MAIN

450V1uC934

330R_100MHZ_3A

L819

16V10uC935

50R_100MHZ_3A

L82060R_100MHZ_3A

L821

50R_100MHZ_3A

L822

gnd2

50R_100MHZ_3A

L823

60R_100MHZ_3A

L824

gnd2

gnd2 gnd2

16V10uC938

16V10uC939

gnd2gnd2

50R_100MHZ_3A

L825

60R_100MHZ_3A

L826

2X

12m

TR

801

1 4

2 3

L82912

3 4

50R_100MHZ_3A

L830

Off1

50V

1n

C941

+24V

6k8R1030

2k2

R1031

C22V_SOD123

D887

1N

4148_S

OD

123

D888

16V

1u

C899

BC848BQ846

BC848BQ845

330R_100MHZ_3A

L832

1kV

1n

C925

CSSD

CSSD

TNY266

IC830

1 BP

3 S2 6NC

8S4

2 S1

4 EN/UV

7S3

5D

60R_100MHZ_3A

L834

60R_100MHZ_3A

L83550R_100MHZ_3A

L836

50R_100MHZ_3A

L833

100uH

L837

GBU4M

D800

330R_100MHZ_3A

L839

50R_100MHZ_3A

L838

gnd2

gnd2

gnd2

gnd2

1RR1032

50V2n2

C942gnd2

50V470p

C943

gnd2

gnd2

S819

S820

AC

1A

C2

150n

C945

250V150n

C944

250V

S821

S822

AC4

AC3

AC2

AC4

AC3

AC4

AC3AC2

L84012

3 4

L84112

3 4

AC4

AC3AC2

10RR1033

50V1n

C9461N4148_SOD123

D889

RE

LA

Y_C

OIL

L842

1 234

2R2

R1035

VS

W

VS

W

PL

81

5

1 2

S823

S824

PL816

12

34

56

78

910

1112

1314

1516

1718

1920

2122

2324

2526

2728

SW_SWITCH

ST_BY

BL_ON/OFF

DIM_PWM_ANALOG

+5VSTBY +33V

+3.3VSTBY +3.3VSTB

VCC_3V3_ON +5V

+24VA +24VA

+30VA/D_DIM_SEL

SW_SWITCH

+12V_1 +12V_1

+12V_1

+5V

50R_100MHZ_3A

L844

330R_100MHZ_3A

L843

PL817

1

2

3

4

5

6+30V

+24V

BL_ON/OFF

+400V

PL818

1

2

PL819

1

2

PL820

1

2

PL821

1

2

25V

ST

PS

5L

25B

IC831

23

4

1

50V

100n

C947

22u

L845

22u

L846

50R

_100M

HZ

_3A

L801

35V

1000u

C948

1N4148_SOD123

D891

1N4148_SOD123

D892

16V

10u

C949

16V

10u

C950

16V

1u

C951

RS

1008_S

OD

123

D806

16V

1u

C901

25V

1u

C932

25V

1u

C953

25V

1u

C954

1kV

1n

C955

50V100n

C862

50V

22n

C855

16V

1u

C838

16V

1u

C956

16V

1u

C957

16V

1u

C958

16V

10u

C959

16V

10u

C960

RS1008_SOD123

D890

16V

10u

C881

2k2

R1036

+24V S802 +24VA

S803+30V

AC1

AC1AC1

+24V

_B

O

+12V

_B

O

+24V_BO

+12V_BO

1kR1037

2k4R1038

50R_100MHZ_3A

L827

+12V

RE

LA

Y_S

AF

E_O

JE-S

S-1

12H

M

RL

1

123 4

S826

PL822

1

2

35V470uC961

35V

1000u

C962

17PW26 REV:01

RESONANT MODE TFT POWER SUPP

UMB ISTEGI26"EK OPSIYON

17PW26 Socket connections

Run 24V to BL inverters

12V Run

5V Run

PL817

Standby Supplies

PL816 to Chassis Pcb

PL804

PL801

PL802

Standby 2.9V – Run 0V from CPU

Note:- PL802 & PL817 may not be fitted, depending on PSU version

24V Run

30V Run

Copyright© SANYO Electric Co., Ltd. All Rights Reserved 20077

Produced in the UK by Mike Burnett

Senior Technical Liaison & Training Engineer

SANYO Europe Ltd

Watford