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TOP202

Power Integrations Inc.
Part Number TOP202
Manufacturer Power Integrations Inc.
Description Three-terminal Off-line PWM Switch
Published Apr 16, 2005
Detailed Description ® TOP200-4/14 TOPSwitch® Family Three-terminal Off-line PWM Switch Product Highlights Low Cost Replacement for Discrete...
Datasheet PDF File TOP202 PDF File

TOP202
TOP202

Overview
® TOP200-4/14 TOPSwitch® Family Three-terminal Off-line PWM Switch Product Highlights Low Cost Replacement for Discrete Switchers • 20 to 50 fewer components - cuts cost, increases reliability • Source-connected tab and Controlled MOSFET turn-on reduce EMI and EMI filter costs • Allows for a 50% smaller and lighter solution • Cost competitive with linears above 5 W Up to 90% Efficiency in Flyback Topology • Built-in start-up and current limit reduce DC losses • Low capacitance 700 V MOSFET cuts AC losses • CMOS controller/gate driver consumes only 6 mW • 70% maximum duty cycle minimizes conduction losses Simplifies Design - Reduces Time to Market • Supported by many reference design boards • Integrated PWM Controller and 700 V MOSFET in a industry standard three pin TO-220 package • Only one external capacitor needed for compensation, bypass and start-up/auto-restart functions System Level Fault Protection Features • Auto-restart and cycle by cycle current limiting functions handle both primary and secondary faults • On-chip latching thermal shutdown protects the entire system against overload Highly Versatile • Implements Buck, Boost, Flyback or Forward topology • Easily interfaces with both opto and primary feedback • Supports continuous or discontinuous mode of operation AC IN DRAIN SOURCE CONTROL TOPSwitch PI-1703-112995 Figure 1.
Typical Application.
TOPSwitch SELECTION GUIDE ORDER PART NUMBER OUTPUT POWER RANGE PFC/ FLYBACK BOOST 85-265 VAC 230/277 VAC 230 VAC or 110 VAC w/Doubler TOP200YAI* TOP201YAI* TOP202YAI* 0-25 W 20-45 W 30-60 W 40-70 W 50-85 W 0-12 W 10-22 W 15-30 W 20-35 W 25-42 W 0-25 W 20-50 W 30-75 W 50-100 W 60-125 W 75-150 W Description The TOPSwitch family implements, with only three pins, all functions necessary for an off-line switched mode control system: high voltage N-channel power MOSFET with controlled turn-on gate driver, voltage mode PWM controller with integrated 100 kHz oscillator, high voltage start-up bias circuit, bandg...


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