PI Forums

Hi, Can we use LNK6776-HP with a feedback optocoupler...presumbaly we can, and can just connect it common collector and into a divider into the FB pin...normal TL431 error amp circuit on secondary side? Which one, Innoswitch, or Lnk6xx6-HP, is better able to be fitted directly below the flyback transformer? (and

Hi, We need an SMPS (non isolated Buck), which can deliver 24V from 100-265VAC. We need it somewhere between 8W and 24W. (As near to 24W as possible). How much power can we get with LNK3209? We would have blown over over the HV Buck components. This is air from

Hello I am using the gate driver 2SC0115T2A0-12 to drive the IGBT leg of inverter. At the instant when driver secondary side has been connected to inverter IGBT pin, the gate pulses is changing(off gate pulse not following instantly and it is decaying). it means the primary and secondary side

Hello, could you help me to find a IGBT Driver to drive a SKM1400GB12P4 from Semikron. Electrical charge is 7500nC You can find the data sheet in attached file Thank you in advanced Best regards Christophe

Hi, Do you know why Innoswitch4-CZ , in PI Expert, wont do a 24V Flyback of 24W? 100-265VAC Open frame Also, is it right that you dont have to use the ClampZero component with Innoswitch4-CZ? (ie you can just leave the HSD pin open)?

Hi, Is it possible to operate innoswitch without connecting the FWD pin?.....We dont like the 6:1 flyback transformer needed when you connect it. What is the basis behind the switching frequency recommendations in the innoswitch datasheet...is it that the turn off losses are too high if too high a frequency

Hi, What drives the switching frequency recomendation for innoswitch-EP seen on pg19 of its datsheet? Is it that the FET turns on very slowly (long time in the linear region) and thus in some cases switching frequency must be very low?

Hi, I just did a PI Expert design with innoswitch EP for a 100-265vac flyback of 24vout and 1A out. The PI Expert came up with this... https://piexpertonline.power.com/piexpert/design/index?tab=tab2 ..At full load /min vin, it has a dead time of about 7us. The sec peak curren is over 10 Amps. Why

Hi, I just downloaded PI Expert. When i open it, it opens, and then immediately closes again. Do you know why this is?

What criteria is to be used to select the values of the RC network that is shown across the output rectifier. Present design is for a 24V 2A output.