Power Supply & Power Adapter Solutions
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Enabling Energy Efficient Solutions Products and solutions enabling high active-mode efficiency, low standby-mode consumption, and power factor correction, for highly efficient power supplies from ON Semiconductor.

ON Semiconductor Provides Expertise, Solutions, and Products that Enable Designers to Quickly Improve System Efficiency Evolving Efficiency Standards GreenPoint® Reference Designs Evolving regulations and incentives, targeted towards improving energy efficiency, are intended to limit global climate change. Enhancing power supply efficiency alone can save over 2% of global energy consumption. Many organizations worldwide (such as China Energy Conservation Project, Japan Top Runner, USA Environmental Protection Agency, European Code of Conduct) now develop regulations and incentives for power...

Single Chip CCM PFC + LLC Solution for 310 W ATX Power Supply Input 90 to 265 Vac EMI Filtering and Rectification • Featuring NCP1910 high performance CCM PFC + LLC combo controller Satisfies 80 PLUS® Gold efficiency • specifications Integrated ON/OFF and Power OK signal • operation to conform with the ATX12V specification • Easily configurable startup and shut down timing sequences to meet hold-up time and power down warning requirements Download AND8474/D for more information • 12Vout 12V_RTN 2x NCP4303 Sync Rec 12V_FB NCP1910 CCM PFC + LLC ON/OFF Remote Control Aux_Supply NCP1027 Flyback...

300 W SLIM LCD TV Power Supply Reference Design Primary to Secondary Galvanic Isolation Standby - ON Disconnection in Standby Mode Standby High Voltage Switching Regulator Bias Standby/ON MBR360 NCP1053A Hysteric Flyback • Utilizes NCP1631 for interleaved frequency clamped critical conduction power factor correction • NCP1053A integrated switching regulator provides low power standby (Pin < 25 mW in off mode) • High efficiency NCP1379 quasi-resonant flyback converter for powering signal processing and audio amplifiers • Board height limited to 8 mm for slim 90 to 265 Vac LCD TV designs •...

60 W Quasi-Resonant Power Adaptor HV-bulk Vout AC Line ZCD/OPP OVP EMI Filtering NC1380A/B OTP • 19 V quasi-resonant power adapter intended for notebook computer power adapters • Utilizes NCP1380 quasi-resonant flyback controller with valley lockout to prevent audible transformer noise at light load • Average efficiency of > 87% as per ENERGY STAR 2.0 guidelines • No load input power of < 100 mW • Download AND8431/D and NCP1380EVB/D for more information 48 W Universal Input Printer Power Adapter • 24 V flyback power adapter for printers delivering 30 W steady state with transient capability...

40 W AC-DC Power Adapter • Compact, high performance 12 V, 3.3 A flyback power adapter • Featuring highly integrated NCP1250 fixed frequency flyback controller in a small TSOP-6 package • Average efficiency of > 87% • No load input power of 33 mW at low line • Download AND8486/D for more information 22 W Offline Forward Converter Power Supply 90 to 265 Vac Input 1N4007 MBRS2H100 + MBRS2H100 1.5 A 250 Vac 12 V @ 1.8 A (2 A Peak) – 1N4937 • 12 V, 2 A max (22 W continuous) offline power supply • Featuring NCP1028 monolithic switching regulator • Simple compact design with low EMI and high...

Power Factor Correction • Improved efficiency in light load over traditional CrM PFC • Unlike CrM, switching frequency is reduced at light load • Improved reliability and safety without extra components Relative Output Power (%) Relative Output Power (%) • CrM with Current Controlled Frequency Foldback (CCFF) • Shorted Boost or Bypass Diode Protection • Comprehensive Open / Short Pin Protection • Enhanced Transient Response • Soft Overvoltage Protection • Brownout Detection • Optional Skip Mode • Thermal Shutdown Power Factor Controllers High Current Lower Current Longer dead-time Hmei delay

Enabling Energy Efficient Solutions Secondary Side Controllers NCP4303 Typical Application Example - DCM or QR Flyback Converter • Self contained control of synchronous rectifier in • Precise true secondary zero current detection with adjustable threshold •Automatic parasitic inductance compensation input Secondary Side Controllers NCP1072, NCP1075 High Voltage Regulators • Built-in 700 V MOSFETwith typical RDS(ON) of 11 Q • Dynamic Self-Supply: no need for an auxiliary winding • Frequency foldback and skip-mode with jittering ■ Improved light load efficiency ■ Improved EMI over the entire...

AC-DC Controllers and Regulators Features • Comprehensive, versatile portfolio supports: n Fixed frequency and variable frequency n Different topologies, from the classical flyback, to the half bridge resonant via the forward active clamp n Broad range of price-performance options, from cost effective devices to highly integrated controllers and regulators • mbedded features ease compliance with stringent efficiency requirements: E frequency foldback, Soft-Skip™ mode • Functions reduce EMI signatures and facilitate compliance with safety standards AC-DC Controllers and Regulators Device...

Enabling Energy Efficient Solutions DC-DC Controllers and Regulators • Integrated switching regulators from 0.5 A to 5 A •Various topologies including buck, boost, buck/boost, • Wide input voltage range up to 200 V • PWM controllers capable of driving up to 30 A DC-DC Regulators Power Supply & Power Adapter Solutions

Enabling Energy Efficient Solutions Linear Voltage Regulators • 3 A LDO with Reverse Current Protection • Operating input voltage range: 1.6 - 5.25 V • Output voltage range: 0.8 - 4.5 V (0.1 V steps for fixed options) • Supply current ■ Typical operation mode: 350 uA • Dropout voltage • Output voltage accuracy: 1% Linear Voltage Regulators * Pend ing 2013. ** Consult factoryfor other output voltage options Dropout Voltage vs. Output Current at NCP4632xDT33 Power Supply & Power Adapter Solutions