Datasheet > DI-41

DI-41

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		/
页数	文件大小	规格书
2页	68K
描述
43 W, 100/115 VAC Multi-output Set-top Box Power Supply

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

DI-41 数据手册

Design Idea DI-41

TOP S w it c h^®-GX 43 W, 100/115 VAC

Multi-output Set-top Box Power Supply

Topology

Device

Power Output

Input Voltage

Output Voltage

Application

Flyback

Set-top Box

43 W cont. / 57 W pk 90-132 VAC

TOP247Y

3.3 V, 5 V, 12 V, 18 V, 33 V

Design Highlights

Operation

• Low cost, low component count solution

• Excellent output voltage tracking and cross-regulation - no

linear regulators required

• High efficiency, >71% at 90 VAC

• Line undervoltage detection (UV) and power system surge

protection (OV)

• Meets CISPR22B/EN55022B conducted EMI limits

• Differential and common mode surge immunity to 4 kV

(EN61000-4-5)

The design in Figure 1 utilizes the TOP247Y and takes

advantage of many of the TOPSwitch-GX features. Line UV

and OV (100 V and 450 V, respectively) are implemented

using a single 2 MΩ resistor (R1). Undervoltage eliminates

output glitches and overvoltage provides protection for both

short duration transients and long duration power system

surges. Resistor R4 programs the internal current limit of U1

to 80% of nominal, limiting overload power.

• 100 kHz ring wave immunity to 4 kV (IEEE C62.41)

Thekeyperformancecharacteristicofthecircuitshownisthe

excellent output voltage tracking and cross-regulation. Two

techniques are used to properly center the output voltages.

The extra voltage drop of the ultra-fast rectifier D10 (used

instead of a Schottky) centers the 5 V output at precisely 5 V

10 Ω

UF4003

33 µH, 0.2 A

33 V, 0.03 A

18 V, 0.5 A

47 µF

50 V

10 µF

50 V

3.3 µH, 5 A

UF5402

C10

1000 µF

12 V,

0.6 A/1.8 A pk

UF5402

220 µF

25 V

3.3 µH, 5 A

25 V

Bead

C11

390 µF

C12

100 µF

25 V

R14

35 V

5.6 kΩ

0.5 W

C24

0.1 µF

50 V

R15

Ω

3.3 µH

1 nF

1 kV

68 kΩ

2 W

5 V, 3.2 A

2.2 nF

C13, C14

1200 µF

35 V

C15

220 µF

16 V

D10

3.3 µH

BYV32-200

3.3 V, 3 A

RTN

D1-D4

RL206

VR1

P6KE200

2 A, 800 V

C18

C22

0.1 µF

50 V

D11

MBR1045

C16, 17

220 µF

1200 µF

16 V

35 V

3, 4

1N4937

150 Ω

C21

0.1 µF

50 V

150 µF

1 µF

50 V

200 V

1N4148

20 mH

1.3 A

LTV817

2 MΩ

1/2 W

R10

R12

18 kΩ

R13

15 kΩ

0.22 µF

9.53 kΩ

1 kΩ

C19

0.1 µF

50 V

TOP S w it c h -GX

RV1

275 V

CONTROL

TOP247Y

14 mm

3.3 kΩ

6.8 Ω

3.15 A

0.1 µF

50 V

C20

22 µF

50 V

9.09 k

RT1

10 Ω

3.2 A

TL431CLP

t°

R11

47 µF

90 - 132

VAC

10 kΩ

16 V

PI-3389-091702

Figure 1. TOPSwitch-GX 43 W Continuous, 57 W Peak Set-Top Box Power Supply.

September 2002

DI-41

www.powerint.com

下载PDF

与DI-41相关器件

型号	品牌	描述	获取价格	数据表
DI4100	ETC	TRANSISTOR \| BJT \| PAIR \| NPN \| 55V V(BR)CEO \| CHIP	获取价格
DI4100/DI4879	ETC	Transistor Chips with Matching Characteristics 100% Probed	获取价格
DI-42	POWERINT	Non-isolated Flyback (Buck/Boost) Converter	获取价格
DI-43	POWERINT	30 W, Universal Input, 12 V Supply with <250 mW No-load	获取价格
DI445A	ETC	Interface IC	获取价格
DI480	ETC	Interface IC	获取价格