PHOENIX, Ariz. – July 28, 2014 – ON Semiconductor (Nasdaq: ONNN), driving energy efficient innovations, has added three new current mode, fixed frequency switching regulators to its expansive power management product portfolio. Targeted at use in compact, high reliability offline AC-DC switched-mode power supplies, the NCP1129, NCP1126, and NCP1124 incorporate an avalanche-rated 650 volt (V) MOSFET and frequency foldback along with skip mode that improve the light load and standby efficiency, meeting the ENERGY STAR® EPS 2.0 Standard.
The high degree of integration results in minimal external components and significantly reduces the overall bill of materials, making them highly suited to power system designs for household appliances, DVD players and set top boxes. The NCP1129, NCP1126, and NCP1124 can deliver up to 25 W, 15 W and 12 W respectively and each generate a jittered 65 kilo Hertz (kHz) or 100 kHz switching frequency, resulting in marked improvements in electro-magnetic interference (EMI) performance.
“This new NCP112x series of switchers enable power system design engineers to create more energy efficient and more cost effective power supply designs that will fit into confined spaces,” said Shane Chilton, senior director, AC-DC Power Conversion Products at ON Semiconductor. “The design flexibility provided by specifying these devices allows engineers to optimize their design implementations for either heightened power efficiency or reduced board real estate.”
It is possible for the maximum peak current to be adjusted via an external resistor, facilitating ramp compensation, so that stable continuous conduction mode (CCM) operation can be maintained. The frequency foldback mode permits power conversion efficiency levels to be raised under light load conditions, while the skip mode can be activated for reducing standby power consumption at (or close to) a no load scenario - with less than 100 milliwatts (mW) drawn at high line when in standby mode.
The NCP112x devices all have a wide array of protective features including a 50 ms timer-based auto-recovery short-circuit protection function. Furthermore, short-circuit fault conditions can be independently detected from the auxiliary winding voltage, thereby ensuring that comprehensive safeguards against short-circuit occurrences are in place. The devices incorporate built-in thermal shutdown and over-voltage response mechanisms, as well as a 2 kilovolt (kV) human body model (HBM) resilience rating to electrostatic discharge. An operational temperature range of -40 °C to +150 °C is supported.
Packaging and Pricing
The NCP112x integrated switching regulators are offered in Pb-free PDIP-7 packages, with pricing starting at $0.32 per unit in 10,000 unit quantities.
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安森美半导体(ON Semiconductor,美国纳斯达克上市代号:ONNN)致力于推动高能效电子的创新,使客户能够减少全球的能源使用。公司全面的高能效电源和信号管理、逻辑、分立及定制方案阵容,帮助工程师解决他们在汽车、通信、计算机、消费电子、工业、LED照明、医疗、军事/航空及电源应用的独特设计挑战。公司运营敏锐、可靠、世界一流的供应链及品质项目,及在北美、欧洲和亚太地区之关键市场运营包括制造厂、销售办事处及设计中心在内的业务网络。更多信息请访问http://www.onsemi.cn。
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