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THXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHX
THXTHXTHXTHXTHXTHXTHXTHXTHX THXTHXTHXTHXTHXTHXTHXTHXTHX
DataSheet
2007.9.10 SPEC203H0709A1 :B
THXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHXTHX
THX203H
THX Micro-elec.
THX203H
2006.9.1 2007.9.10
PWM
, 800V ,
James James
A B
************************************************************************************************ 3 ******************************************************************************************************* 4 ************************************************************************************************************** 4 ********************************************************************************************************************** 5 ************************************************************************************************************** 5 ********************************************************************************************************************** 5 ********************************************************************************************************************** 7 ****************************************************************************************************************** 8 ********************************************************************************************************************** 9 *************************************************************************************************************11 **************************************************************************************************************** 12 **************************************************************************************************************** 13 ******************************************************************************************************************** 14 ********************************************************************************************************* 15 ********************************************************************************************************* 19 **************************************************************************************************************** 20 ******************************************************************************************************************** 21
-2-
http://www.thx.com.cn
: SPEC203H0709A1/D REV.: B
THX203H
PWM
PWM AC/DC 85V-265V 12W 18W AC/DC IC IC CB 700V IC
DIP8
l l l l l l l l l l l l l 700V(-8V 800V) 0.3W 10 VCC 12W, 18W
l l ADAPTOR OPENFRAME DVDDVB
-3-
http://www.thx.com.cn
: SPEC203H0709A1/D REV.: B
THX203H
PWM
1.
1 2 3 4 5 6 7,8 OB VCC GND CT FB IS OC
* : PCB Layout Pin6 Pin7 1mm
-4-
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: SPEC203H0709A1/D REV.: B
THX203H
PWM
VCC ***************************************************************************************************16V ****************************************************************************************** VCC+0.3V OC ******************************************************************************** 0.3-700V ************************************************************************************************ 800mA *************************************************************************************************1000mW **************************************************************************************** 0---125 *********************************************************************************** 55---150 ***********************************************************************************************260,10S
VCC 4.8 -0.3 650 45 0 5.5 680 61 9.0 Vcc 550 600 920 65 100 V V V mA PF KHz
Ta=25, Vcc=5.5-7.5V, Ct=680PF, Rs=1
OE Ioc=1mA Ioc=600mA CL=1nF CL=1nF Tj=0-100 OE=0.001-0.60A THX203H-7V THX203H-8V THX203H-7V THX203H-8V 700 800 540 580 1.5 1 1.2 75 75 620 V V ns ns mA V
Io=1.0mA Vcc=5.5-9V Io=0.1-1.2mA
-5-
2.4 -
2.5 2 -
2.6 20 3
V mV %
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: SPEC203H0709A1/D REV.: B
THX203H

PWM
F=10Hz-10KHz T=85 1000h
-
0.2 5
50 -
mV/ V mV
(Vp-p) Ct=680PF Vcc=5.5-9V Ta=0-85 Ct=680PF 55 61 2.5 800 67 1 1 KHz % % V ns
Vcc=5.5-9V 0.50 30 60 0.60 70 mA K dB
RS=1 0.54 0.54 0.58 0.58 60 150 0.62 0.62 70 250 V A dB ns
53 57 61 3.5 % %
1.6 8.6 4.0 9.2 2.0 55 2.8 8.8 4.3 3.7 9.6 2.4 80 9.0 4.5 10.0 mA A mA V V V V
Vcc=8V
-6-
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: SPEC203H0709A1/D REV.: B
THX203H
l
PWM
l
l
VR FB OE VCCOB THX203H VCC 8.8V VCC 4.8~9.0V 2.5V VR FB OSC1 OSC2 FB 1.8V 1.2-1.8V FB VCC 9.6V FB VCC 9.6V OB OE IS OB OB IS IS=0V OB 40mA OB IS IS 0.6V OB 120mA OB THX203H IS FB OB OE 1.5V FB FB 1.8V THX203H 140 THX203H 150 THX203H / VCC 4.3V OSC1OSC2 VCC 3.7V THX203H
CT OSC2 OSC1 IS

0.6V
OB OE
1.5V 0.5V
2.
-7-
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: SPEC203H0709A1/D REV.: B
THX203H
PWM
3.
l l l l l l l l l l l l OB 0.5mA OC VCC CT 680PF VCC THX203H VCC VCC VCC VCC VCC VCC FB 1.0K VCC /FB=2.5V,CT=1.25VCT / FB FB=2.5V,IS=0V FB FB FB=6V,IS=0.3VFB THX203H VCC OC FB=6VFB OC OB IS IS=0V OB 40mA OB IS IS 0.6V OE 120mA
-8-
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: SPEC203H0709A1/D REV.: B
THX203H
PWM
1CT CT 100uA 2.5V 1.9mA CT
10100nF 22nF 3 IC 140
T=CT*24000 (S) Fs=1/T (Hz)
70KHz THX203H CT 680PF 61KHz 2FB FB FB 600uA 33K FB 1.8V 1.8V FB
4 FB=0 OB 40mA, FB=6V OB 120mA IC OB OE 1.5V Ic CB 700V
CFB
-9-
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: SPEC203H0709A1/D REV.: B
THX203H
PWM
6 IC FB MOSFET Ron THX203H 0.80A 65V 0.80A 12W 7 IC IC Pin7-8 Pin7-8 PCB 85265V 12W 200mm2
OB OE
1.5V 0.5V
5 IC VCC 8.8V IC Ic IC VCC IC VCC 4.8-9V VCC 4.4V VCC 3.8V IC
VCC
4.8-9V 4.4V 3.8V
CT VR
IC VCC VCC 9.6V FB VCC 9.6V VCC VCC IC
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: SPEC203H0709A1/D REV.: B
THX203H
PWM
90240V 12V 1A
4.
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THX203H
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
PWM
/
1K 2K 10K 10K,1% 38.3K,1% 100R 0.91R,1/2W,1% 75K,1/2W 2.2M,1/2W
0805 0805 0805 0805 0805 1206 1/2W 1/2W 1/2W 0805 CT5 0805 0805 MKP,X1 CT7,Y1 EC23-13 EC11-5 EC13-8 DO-41 DO-41 DO-201AD DR0810 DR0608 EF20-P10 D4*10mm CT7 DIP8 DIP4 TO92
1 1 2 1 1 2 1 1 1 1 2 1 1 1 1 2 1 2 4 2 1 1 1 1 1 1 1 1 1 1 R5 R6 R7 R9 R8 R3 R4 R2 R1 C5 C3 C6 C7 CX1 CY1 C1 C4 C8
R10
R11
681J/50V 222/1KV 103/50V 104/50V
C10
X Y
104/275V 222M/400V 15uF/400V 47uF/16V 470uF/25V
C2 C9
1N4007 FR107 SR3100
D1-D4 D5 D7 L1 L2 T1 F1 RV1 U1 U2 U3 D6
IC
DR8*10,1mH DR6*8,10uH EF20 F1.5A/250V 7D471K THX203H-7V PC817C TL431AZ
PCB,33x65mm
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: SPEC203H0709A1/D REV.: B
THX203H
1
PWM
Core : EF20,TDK PC40 Ae=33.5mm2 Aw=60.4mm2 Bobbin : EF20-H, 10PIN, 5+5PIN,VELOX 420-SEO , 94V0, Lp=1.0mH 5% 2
1 2 5 10(F+) 1 3 NC 6(F-) 5 5 1 3 2 FF+
3 1 2 3 4 5 6 7 8 9 10 Np, Nsh1, Ns, Nsh2, Nvcc, / 80TS 2 15TS 2 15TS 2 0.9TS 2 9TS 3 - - - - --
0.30mm*1P,2UEW 3-1 3M,No.1350 --
0.15mm*4P,2UEW 5-NC 3M,No.1350 0.55mm*1P,3TIW 3M,No.1350 0.05mm*8mm, 3M,No.1350 -F+ F-1-NC --
0.15mm*1P,2UEW 5-2 3M,No.1350 --
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: SPEC203H0709A1/D REV.: B
THX203H

PWM
Vac
85 W V mV 0.09 12.04 10.8 110 0.10 12.04 11.4 135 0.11 12.04 19.6 180 0.14 12.04 20.2 220 0.17 12.04 22.0 265 0.24 12.04 25.0
Io=0A () Io=0A Io=0A 100% Io=1A Io=1A Io=1A 75% Io=0.75A Io=0.75A Io=0.75A 50% Io=0.5A Io=0.5A Io=0.5A 25% Io=0.25A Io=0.25A Io=0.25A
V mV %
12.04 52.0 81.1
12.04 69.0 83.9
12.04 23.0 85.3
12.04 24.0 85.7
12.04 24.5 85.7
12.04 23.5 85.1
V mV %
12.04 55.0 81.2
12.04 40.0 84.0
12.04 26.0 85.1
12.04 25.0 85.7
12.04 21.0 85.7
12.04 21.5 85.0
V mV %
12.04 50.0 81.4
12.04 19.0 83.9
12.04 20.0 85.2
12.04 17.0 85.4
12.04 19.0 85.0
12.04 20.5 83.9
V mV %
12.04 20.0 80.3
12.04 14.0 82.5
12.04 14.4 83.2
12.04 15.8 83.4
12.04 18.0 82.5
12.04 19.4 81.2
For CEC, EffAV=0.09*LN(12)+0.49=71.4% 25%-100% % 81.0 83.6 84.7 85.1 84.7 83.8
PCB , 10uF 0.1uF . 3310D, GPM-8212, DSO3102A
: SPEC203H0709A1/D REV.: B
http://www.thx.com.cn - 14 -
THX203H
1Vce Vin=85V, Io=0.5A
50V/div 2uS/div
PWM
Vin=85V, Io=1A
50V/div 2uS/div
Vin=110V, Io=0.5A
50V/div 2uS/div
Vin=110V, Io=1A
50V/div 2uS/div
Vin=220V, Io=0.5A
100V/div 2uS/div
Vin=220V, Io=1A
100V/div 2uS/div
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: SPEC203H0709A1/D REV.: B
THX203H
Vin=265V, Io=0.5A
100V/div 5uS/div
PWM
Vin=265V, Io=1A
100V/div 5uS/div
2 Vin=85V, Io=1A
50mV/div 10mS/div
Vin=265V, Io=1A
20mV/div 10mS/div
3 Vin=85V, Io=1A
20mV/div 10uS/div
Vin=265V, Io=1A
20mV/div 10uS/div
http://www.thx.com.cn - 16 -
: SPEC203H0709A1/D REV.: B
THX203H
4 Vin=85V, Io=1A
PWM
Vin=265V, Io=1A
2.0V/div 10mS/div
2.0V/div 10mS/div
5 Vce Vo Vin=85V, Io=1A
100V/div 200mS/div 5V/div
Vin=265V, Io=1A
200V/div 200mS/div 5V/div
6 Vce Vin=85V, Io=Short
50V/div 200mS/div
Vin=265V, Io=Short
100V/div 500uS/div
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: SPEC203H0709A1/D REV.: B
THX203H
PWM
http://www.thx.com.cn - 18 -
: SPEC203H0709A1/D REV.: B
THX203H
THX203H-7V THX203H-8V 700V 800V
PWM
DIP8 DIP8
50PCS/TUBE 50PCS/TUBE
THX 1 THX203H -xV yyww ,yyww= / : -7VoOx:70 0V 800V ,- 8V:
IC DIP8 (JC)1..............................................................25/W (JA)2..............................................................70/W 1 Pin7,8 2Pin7,8 2 200mm2.
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: SPEC203H0709A1/D REV.: B
THX203H (DIP8)
PWM
4
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: SPEC203H0709A1/D REV.: B
THX203H
PWM
http://www.thx.com.cn THX IC

(c) Copyright 2007
88 2001 210008 025-8336 5687 025-8699 8106 info@thx.com.cn http://www.thx.com.cn
http://www.thx.com.cn - 21 -
: SPEC203H0709A1/D REV.: B

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