RD2 Datasheet, PDF (1/12 Pages) Power Integrations, Inc. – 85 to 132 VAC or 170 to 265 VAC Input, 8W(10W Peak) Output

RD2 TOPSwitch ^®
®
Reference Design Board
85 to 132 VAC or 170 to 265 VAC Input,
8W(10W Peak) Output
Product Highlights
Low Cost Production Worthy Reference Design
• Only 21 components!
• Single sided board
• Low cost thru-hole components
• Fully assembled and tested
• Easy to evaluate and modify
• Extensive performance data
• Up to 77% efficiency
• Light weight - no heat sink required for TOPSwitch
Fully Protected by TOPSwitch
• 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
Typical Applications
• Replacement for low power linear adapters
• Auxiliary power supply for appliance, motor control,
utility meters, smart building, UPS, etc.
Description
The RD2 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 Switchers from
Power Integrations. It is intended to help TOPSwitch users to
quickly develop their products 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 or voltages is all that is needed. A complete set of
performance curves, the parts list, the board layout and details
on transformer design are provided to speed up the TOPSwitch
based switcher design.
1.4 in.
2.6 in.
0.8 in.
PI-1768-020596
Figure 1. RD2 Board Overall Physical Dimensions.
PARAMETER
Input Voltage Range
Input Frequency Range
85 t^Lo^IM13^IT2^SVAC
85 to 132 VAC
or 170 to 265 VAC
47 to 440 Hz
Temperature Range
0 to 70°C
Output Voltage (I_o = 0.67A)
Output Power (continuous)
12 V ± 10%
8W
Output Power (peak)
(85-132 VAC)
Line Regulation _{(170-265 VAC)}
Load Regulation (10%-100%)
10 W
± 0.7%
± 5%
Efficiency (115 V input, 8 W out)
75%
Output Ripple Voltage
± 50 mV MAX
Safety
IEC 950 / UL1950
EMI
VDE B (VFG243 B)
CISPR22
Figure 2. Table of Key Electrical Parameters.
May 1996