[原创] ST VIPER11节能800V高压离线转换器解决方案

ST公司的VIPER11是节能高压离线转换器,集成了雪崩电压800V的MOSFET和PWM电流模式控制,允许可以使用超宽的VAC输入电压,嵌入了HV起动和检测FET,漏极电流限制保护,电源电压4.5V-30V,能满足最严格的节能标准,支持反激,降压和降压升压转换器,其集成的HV起动,检测FET,误差放大器和抖动振荡器可以使用最少外接元件实现完整的应用方案.主要用在家用电器,家庭自动化,工业,消费类电子和照明的低功率SMPS以及低功率适配器.本文介绍了VIPER11主要特性,框图,基本应用电路和多种应用电路,以及评估板STEVAL-ISA195V1主要特性和电指标,电路图,材料清单和PCB设计图.

The device is a high voltage converter smartlyintegrating an 800 V avalanche-rugged powerMOSFET with PWM current mode control. Thepower MOSFET with 800 V breakdown voltageallows the extended input voltage range to beapplied,as well as the size of the DRAIN snubbercircuit to be reduced. This IC meets the moststringent energy-saving standards as it has verylow consumption and operates in pulse frequency modulation under light load. The design offlyback, buck and buck boost converters is supported. The integrated HV startup, sense-FET, error amplifier and oscillator with jitter allowa complete application to be designed with theminimum number of components.

VIPER11主要特性:

• 800 V avalanche-rugged power MOSFETallowing ultra wide VAC input range to be covered
• Embedded HV startup and sense-FET
• Current mode PWM controller..

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