RD5 查看數據表（PDF） - Power Integrations, Inc

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RD5

TOPSwitch-II® Reference Design Board 85 to 265 VAC Input, 20W (30W Peak) Output

Power Integrations, Inc 

RD5

®

TOPSwitch®-II

Reference Design Board

85 to 265 VAC Input, 20W (30W Peak) Output

Product Highlights

Low Cost Production Worthy Reference Design

• Only 22 components!

• Single sided board

• Low cost thru-hole components

• Fully assembled and tested

• Easy to evaluate and modify

• Extensive performance data

• Up to 80% efficiency

• Light weight – no heat sink required for TOPSwitch-II

Fully Protected by TOPSwitch-II

• Primary safety current limit

• Output short circuit protection

• Thermal shutdown protects entire power supply

Designed for World Wide Operation

• Designed for IEC/UL safety requirements

• Meets VDE Class B EMI specifications

Description

The RD5 reference design board is an example of a very low

cost production worthy power supply design using the

TOPSwitch family of Three-terminal Off-line PWM Switchers

from Power Integrations. It is intended to help TOPSwitch

users to develop their products quickly by providing a basic

design that can be easily modified to fit a particular application.

In most cases, a minor change to the transformer for a different

output voltage is all that is needed. Multiple output voltages are

obtained just as easily. A constant current or constant power

output may be implemented with the addition of a few low cost

components.

Typical applications include AC-DC adapters for laptops,

notebooks and PDAs, battery chargers for cellular telephones,

power tools and camcorders, VTR/VCR, video game, appliance

and satellite decoder power supplies.

1.69 in.

(43 mm)

3.57 in. (91 mm)

1.06 in.

(27 mm)

PI-2058-041698

Figure 1. RD5 Board Overall Physical Dimensions.

PARAMETER

LIMITS

Input Voltage Range

85 to 265 VAC

Input Frequency Range

47 to 440 Hz

Temperature Range

0 to 50°C

Output Voltage (Io = 1.0A)

Output Power (continuous)

Output Power (peak)

12 V ± 5%

25˚C

20W

50˚C

15W

30W

Line Regulation (85-265 VAC)

± 1%

Load Regulation (10%-100%)

± 1%

Efficiency

Output Ripple Voltage

78%

± 60 mV MAX

Safety

IEC 950 / UL1950

EMI

VDE B (VFG243 B)

CISPR22

Figure 2. Table of Key Electrical Parameters.

July 1997

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