设计考虑夹紧网络甚高电压单片离线PWM控制器

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In the large family of Switch-Mode Power Suppl(SMPS) components, the recently introduced high-voltagmonolithic switchers start to play an important role. First of all because they provide an easy mean to instantaneously build an efficient off-line supply but also because their internal structure offers everything a designer needs: nternal clock, pulse-by-pulse limitation, Leading Edge Blanking (LEB) etc. However, the internal MOSFET exhibits a low-energy capability body-diode which no longer protects the device against accidental avalanche. This element thus needs an adequate protection network against the electromagnetic leakage energy. This paper details what network is best adapted to the protection， 大小：594 KB