RDK-242 Power Integrations, RDK-242 Datasheet - Page 4

• Manufacturer Part Number: RDK-242
• Description: Power Management Modules & Development Tools TOPSwitch-JX REF. DESIGN KIT
• Manufacturer: Power Integrations
• Type: MOSFET & Power Driverr

Specifications of RDK-242

• Input Voltage: 85 VAC to 264 VAC
• Output Voltage: 12 V
• Maximum Operating Temperature: + 40 C
• Minimum Operating Temperature: 0 C
• Operating Supply Voltage: 85 VAC to 264 VAC
• Product: Power Management Modules

1 Introduction
This engineering report describes a power supply employing the Power Integrations
TOPSwitch
and provides a 12 V, 30 W output. It has been designed and tested to operate open
frame with an ambient temperature environment of up to 40 °C.
The TOPSwitch-JX, by design, maintains virtually constant efficiency across a very wide
load range without using special operating modes to meet specific load thresholds. This
optimizes performance for existing and emerging energy-efficiency regulations.
Maintaining constant efficiency ensures design optimization for future energy-efficiency
regulation changes without the need for redesign.
The low MOSFET capacitance of TOPSwitch-JX allows a higher switching frequency
without the efficiency penalty which occurs with standard discrete MOSFET. The 132 kHz
switching frequency (rather than the 70 kHz to 100 kHz frequency used for a discrete
MOSFET) reduces the transformer size required, and so reduces cost.
This power supply offers the following protection features:
This document provides complete design details including specifications, the schematic,
bill of materials, and transformer design and construction information. This information
includes performance results pertaining to regulation, efficiency, standby, transient load,
power-limit data, and conducted EMI scans.
 Output OVP (including open loop) with latching shutdown
 Auto-recovery type overload protection
Power Integrations, Inc.
Tel: [phone] Fax: [phone]
www.powerint.com
®
-JX TOP266VG. This power supply operates over a universal input range
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