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NCP1651 Datasheet(PDF) 4 Page - ON Semiconductor |
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NCP1651 Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 6 page No Yes Variable toff Resonant Quasi- Resonant EMI Troubling? Need higher efficiency? Operating Mode No Yes Do you need low Standby power? Low End High End Please visit our website at www.onsemi.com for additional options. What features do you need? No Yes Is Your Input Power Above 25 W? Page 4 Variable Frequency Controllers Minimum EMI, Maximum Efficiency. . . ON Semiconductor’s variable frequency controllers include quasi-resonant and resonant controllers. These controllers are used respectively in critical conduction mode quasi-resonant flyback converters and half bridge resonant LLC converters. These topologies minimize EMI radiation, provide better magnetic utilization and offer excellent power conversion efficiency - up to 90%. Our variable frequency controllers combine the advantages of working directly off-line (with our proprietary VHVIC technology) with the ability to drive an external high-voltage MOSFET of your choice, and offer you more design flexibility than our competitors. Key Features & Benefits EMI Filter AC OPTO-1 OPTO-1 Voltage Feedback Over Voltage Protection OPTO-2 12 V SMPS MOSFET NCP1337 SMPS Controller NTP75N06 Synchronous Rectification Circuitry Flyback Quasi-Resonant Controller Technology for Increased Efficiency and Lower EMI 12V 12V TL431 OPTO-2 12V VARIABLE FREQUENCY CONTROLLERS Device Max Output Power1 (W) Mode Standby Power Method Output Gate Drive (mA) @ VCC = 11V Max Switching Frequency (kHz) Package(s) NCP1215A 10 Current, Var toff Freq Foldback 30 Adjustable 4 4 SO-8, TSOP-6 NCP1351 50 Current, Var toff Freq Foldback 150 65 4 4 4 4 SO-8 NCP1205 150 Current Freq Foldback 300 Adj., Default 125 4 4 4 SO-16, PDIP-8, PDIP-14 NCP1207A 150/1001 Current Adj Skip Cycle 500 Set by Min, Toff = 8µs 4 4 4 4 4 4 SO-8, PDIP-8 NCP1308 150 Current Adj Skip Cycle 500 Set by Min, Toff = 10µs 4 4 4 4 4 4 SO-8 NCP1337 200 Current Adj Skip Cycle 500 130 4 4 4 4 4 4 4 4 SO-7, PDIP-7 NCP1377/B 150 Current Adj Skip Cycle 500 Set by Min, Toff = 3 or 8µs 4 4 4 4 4 SO-7, PDIP-7 NCP1378 150 Current Adj Skip Cycle 500 Set by Min, Toff = 8µs 4 4 4 4 4 SO-7, PDIP-7 NCP1381 200 Current Adj Skip Cycle 500 125 4 4 4 4 4 4 SO-14 NCP1395 500 Voltage Adj Skip Cycle 180 1000 4 4 4 4 4 4 SOIC-16, PDIP-16 1. Maximum Power Output with DSS 2. Overvoltage Protection 3. Over Power Compensation A 60 W Power Adapter Using NCP1337 ~ Quasi-resonant mode valley switching i Minimizes EMI i Reduces switching losses ~ High-voltage start-up-current source i Offers clean loss-less start-up sequence ~ Dynamic Self Supply (DSS) capability i Simplifies transformer design ~ Adjustable skip-mode and Soft-Skip™ capability i No acoustic noise generation ~ Gate drive capability up to 500 mA i Gives flexibility in choosing external MOSFET ~ Over-current and over-voltage protection i Protects circuitry ~ Over-power compensation |
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