RD5 Datasheet, PDF (1/12 Pages) Power Integrations, Inc. – Reference Design Board 85 to 265 VAC Input, 20W (30W Peak) Output

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 (I_o = 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