(TOP252 - TOP261) Integrated Off Line Switcher

www.DataSheet4U.com TOP252-261 TOPSwitch-HX Family ® Enhanced EcoSmart , Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range Product Highlights Lower System Cost, Higher Design Flexibility • Multi-mode operation maximizes efficiency at all loads • New eSIP-7C package builds on PI’s experience with high power and high reliability packages • Low thermal impedance junction-to-case (2 °C per watt) • Low height is ideal for adapters where space is limited • Simple mounting using a clip to aid low cost manufacturing • No heatsink required up to 35 W using P, G and M packages with universal input voltage and up to 48 W at 230 VAC • Output overvoltage protection (OVP) is user programmable for latching/non-latching shutdown with fast AC reset • Allows both primary and secondary sensing • Line undervoltage (UV) detection prevents turn-off glitches • Line overvoltage (OV) shutdown extends line surge limit • Accurate programmable current limit • Optimized line feed-forward for line ripple rejection • 132 kHz frequency (254Y-258Y and all E packages) reduces transformer and power supply size • Half frequency option for video applications • Frequency jittering reduces EMI filter cost • Heatsink is connected to SOURCE for low EMI • Improved auto-restart delivers <3% of maximum power in short circuit and open loop fault conditions • Accurate hysteretic thermal shutdown function automatically recovers without requiring a reset • Fully integrated soft-start for minimum start-up stress • Extended creepage between DRAIN and all other pins improves field reliability Output Power Table Product5 TOP252PN/GN TOP252MN TOP253PN/GN TOP253MN TOP254PN/GN TOP254MN TOP255PN/GN TOP255MN TOP256PN/GN TOP256MN TOP257PN/GN TOP257MN TOP258PN/GN TOP258MN Table 1. AC IN + DC OUT - ® D V CONTROL TOPSwitch-HX S X F C PI-4510-100206 Figure 1. Typical Flyback Application. ® EcoSmart – Energy Efficient • Energy efficient over entire load range • No-load consumption • Less than 200 mW at 265 VAC for TOP256-258 • Less than 300 mW at 265 VAC for TOP259-261 • Standby power for 1 W input • >600 mW output at 110 VAC input • >500 mW output at 265 VAC input Description TOPSwitch-HX cost effectively incorporates a 700 V power MOSFET, high voltage switched current source, PWM control, oscillator, thermal shutdown circuit, fault protection and other control circuitry onto a monolithic device. 230 VAC ±15% Open Frame2 21 W 43 W 62 W 81 W 119 W 157 W 195 W 238 W 275 W 333 W 85-265 VAC Open Frame2 13 W 29 W 43 W 57 W 86 W 119 W 148 W 171 W 200 W 254 W 230 VAC ±15%4 Open Adapter1 Peak3 Frame2 21 W 9W 15 W 21 W 15 W 16 W 19 W 21 W 25 W 29 W 25 W 28 W 30 W 34 W 41 W 48 W 38 W 43 W 47 W 62 W 54 W 81 W 63 W 98 W 70 W 119 W 77 W 140 W Adapter1 6.5 W 9W 11 W 13 W 15 W 19 W 22 W 85-265 VAC Open Frame2 10 W 15 W 20 W 22 W 26 W 30 W 35 W Peak3 13 W 13 W 25 W 29 W 30 W 40 W 35 W 52 W 40 W 64 W 45 W 78 W 50 W 92 W Product5 TOP252EN TOP253EN TOP254EN/YN TOP255EN/YN TOP256EN/YN TOP257EN/YN TOP258EN/YN TOP259EN/YN TOP260EN/YN TOP261EN/YN Adapter1 10 W 21 W 30 W 40 W 60 W 85 W 105 W 128 W 147 W 177 W Adapter1 6W 13 W 20 W 26 W 40 W 55 W 70 W 80 W 93 W 118 W Output Power Table. (for notes see page 2). February 2008 www.powerint.com www.DataSheet4U.com TOP252-261 Y Package Option for TOP259-261 In order to improve noise-immunity on large TOPSwitch-HX Y package parts, the F pin has been removed (TOP259-261YN are fixed at 66 kHz switching frequency) and replaced with a SIGNAL GROUND (G) pin. This pin acts as a low noise path for the C pin capacitor and the X pin resistor. It is only required for the TOP259-261YN package parts. Notes: 1. Minimum continuous power in a typical non-ventilated enclosed adapter measured at +50 °C ambient. Use of an external heat sink will increase power capability. 2. Minimum continuous power in an open frame design at +50 °C ambient. 3. Peak power capability in any design at +50 °C ambient. 4. 230 VAC or 110/115 VAC with doubler. 5. Packages: P: DIP-8C, G: SMD-8C, M: SDIP-10C, Y: TO-220-7C, E: eSIP-7C. See part ordering information. AC IN + DC OUT - D V CONTROL TOPSwitch-HX S X G C PI-4973-122607 Figure 2. Typical Flyback Application TOP259YN, TOP260YN and TOP261YN. 2 Rev. B 02/08 www.powerint.com www.DataSheet4U.com TOP252-261 Section List Functional Block Diagram ....................................................................................................................................... 4 Pin Functional Description ...................................................................................................................................... 6 TOPSwitch-HX Family Functional Description ....................................................................................................... 7 CONTROL (C) Pin Operation .................................................................................................................................... 8 Oscillator and Switching Frequency.......................................................................................................................... 8 Pulse Width Modulator ............................................................................................................................................ 9 Maximum Load Cycle .............................................................................................................................................. 9 Error Amplifier .......................................................................................................................................................... 9 On-Chip Current Limit with External Programmability ............................................................................................... 9 Line Under-Voltage Detection (UV).......................................................................................................................... 10 Line Overvoltage Shutdown (OV) ............................................................................................................................ 11 Hysteretic or Latching Output Overvoltage Protection (OVP)................................................................................... 11 Line Feed-Forward with DCMAX Reduction .............................................................................................................. 13 Remote ON/OFF and Synchronization.................................................................................................................... 13 Soft-Start ............................................................................................................................................................... 13 Shutdown/Auto-Restart ......................................................................................................................................... 13 Hysteretic Over-Temperature Protection ................................................................................................................. 13 Bandgap Reference ............................................................................................................................................... 13 High-Voltage Bias Current Source .......................................................................................................................... 13 Typical Uses of FREQUENCY (F) Pin ...................................................................................................................... 15 Typical Uses of VOLTAGE MONITOR (V) and EXTERNAL CURRENT LIMIT (X) Pins .......................................... 16 Typical Uses of MULTI-FUNCTION (M) Pin ........................................................................................................... 18 Application Examples .............................................................................................................................................. 21 A High Efficiency, 35 W, Dual Output – Universal Input Power Supply ..................................................................... 21 A High Efficiency, 150 W, 250-380 VDC Input Power Supply .................................................................................. 22 A High Efficiency, 20 W Continuous – 80 W Peak, Universal Input Power Supply ................................................... 23 A High Efficiency, 65 W, Universal Input Power Supply ........................................................................................... 24 Key Application Considerations .............................................................................................................................. 25 TOPSwitch-HX vs.TOPSwitch-GX ....................................................................................................................... . 25 TOPSwitch-HX Design Considerations .................................................................................................................. 26 TOPSwitch-HX Layout Considerations ................................................................................................................... 27 Quick Design Checklist .......................................................................................................................................... 31 Design Tools .......................................................................................................................................................... 31 Product Specifications and Test Conditions .......................................................................................................... 32 Typical Performance Characteristics .................................................................................................................... 39 Package Outlines ..........................................................................................................