| 描述 | ST公司的VIPER26K是集成了1050V雪崩功率部分和PWM电流模式控制论的高压转换器.1050V- BV功率MOSFET可扩展输入电压范围,同时降低DRAIN缓冲电路的尺寸.器件满足最严格的节能标准,因为它有非常低的功耗和轻负载时工作在突发模式.集成的HV起动,检测FET,误差放大器和抖动振荡器可使得完整的应用具有最少化元件数量.VIPer26K支持大多数开关电源(SMPS)拓扑如带光耦的隔离反激,初级调整,电阻反馈的非隔离反激,降压和降压升压等.漏极电流限额保护500mA, 230 VAC时的待机功耗小于30mW,抖动开关频率降低EMI滤波器成本: 60 kHz ± 4kHz.故障消除后安全自动重起.滞后热关断,内置了软起动以提高系统可靠性.主要用在能量表的SMPS,3相输入工业系统的辅助电源,LED照明和空调.本文介绍了VIPER26K主要特性,框图和基本应用电路图,多种应用电路以及参考设计STEVAL-VP26K01B主要特性,电路图和材料清单.
The device is a high voltage converter smartlyintegrating a 1050 V avalanche-rugged powersection, with a PWM current mode control. The1050 V-BV power MOSFET allows to extend inputvoltage range, and reduce the size of the DRAINsnubber circuit. This IC meets the most stringentenergy-saving standards as it has very lowconsumption and operates in burst mode underlight load.
The integrated HV startup, sense-FET, erroramplifier and oscillator with jitter allow a completeapplication to be designed with the minimumnumber of components.
The VIPer26K supports the most common SMPStopologies such as: isolated flyback withoptocoupler, primary-side regulation, non-isolatedflyback with resistive feedback, buck, and buckboost.
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