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Infineon ICE2QS03G 36W(12V3A)电源解决方案 免费猫

发布时间:2020-02-17 12:59:24 阅读: 来源:聚氨酯保温管厂家

Infineon ICE2QS03G 36W(12V3A)电源解决方案

Infineon公司的ICE2QS03G是准谐振PWM控制器,适用于离线开关电源如LCD TV,CRT TV和笔记本电脑适配器.采用突发模式操作,待机时具有超低功耗.器件采用BiCMOS技术,高达26V工作电压.本文介绍了ICE2QS03G亮点,主要特性,方框图和典型应用电路,以及36W评估板主要指标,电路图,材料清单和PCB布局图.

ICE2QS03G is a quasi-resonant PWM controller optimized for off-line switch power supply applications such as LCD TV, CRT TV and notebook adapter. The digital frequency reduction with decreasing load enables a quasi-resonant operation till very low load. As a result, the overall system efficiency is significantly improved compared to other conventional solutions. The active burst mode operation enables an ultra-low power consumption at standby mode with small and controllable output voltage ripple. Based on the BiCMOS technology, the product has a wide operation range (up to 26V) of IC power supply and lower power consumption. The numerous protection functions give a full protection of the power supply system in failure situations. All of these make the ICE2QS03G an outstanding controller for quasi-resonant flyback converter in the market.

ICE2QS03G亮点:

Active burst mode for low standby power

Digital frequency reduction for better overall system efficiency

Integrated power cell for IC self-power supply

ICE2QS03G主要特性:

Quasiresonant operation till very low load

Active burst mode operation at light/no load for low standby input power ( 100mW)

Digital frequency reduction with decreasing load

Power cell for VCC pre-charging with constant current

Built-in digital soft-start

Foldback correction and cycle-by-cycle peak current limitation

Auto restart mode for VCC Overvoltage protection

Auto restart mode for VCC Undervoltage protection

Auto restart mode for openloop/overload protection

Latch-off mode for adjustable output overvoltage protection

Latch-off mode for Short-winding protection

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