Thanks!
PSU is implemented with peak current control, and hard switched MOSFETs that produce a lot of heat at high current. It is a joke of a PFC, dirty as hell, current is not sine shaped at all, it just has a wider conduction period than a conventional rectifier. And they boast it as PFC.
I wanted to count the number of parts to compare it with my clean single stage PFC approach, variable frequency, microcontroller driven. Powersoft approach uses many small single-gate parts as opposed to my approach using quad resistors, dual transistors, etc. Placement effort/cost machine-wise is similar. My approach uses ~35% more parts, but does sine shaped current at any line voltage, and up to 2800W with E42 transformer, IGBT, soft switching (plus separate magnetics/heatsink thermal management, data logging, statistics). More on the subject can be read on this thread.
The ultimate amplifier SMPS. What comes after LLC? Single stage PFC.
The link points directly to a comparison between Pascal/Powersoft input current waveforms and current waveforms of my variable frequency MCU controlled PFC.
EDIT: That was another dilemma I had with my employer before being fired. He was persuaded by the usual suspects at audio fairs to think that a clean PFC was not worth the effort. He wanted to sell lots. He wanted to sell cheap. He wanted to sell junk.
Maybe someone could verify and post picture demonstrating that line current wise the Powersoft Litemod is as dirty as Pascal SPRO?
PSU is implemented with peak current control, and hard switched MOSFETs that produce a lot of heat at high current. It is a joke of a PFC, dirty as hell, current is not sine shaped at all, it just has a wider conduction period than a conventional rectifier. And they boast it as PFC.
I wanted to count the number of parts to compare it with my clean single stage PFC approach, variable frequency, microcontroller driven. Powersoft approach uses many small single-gate parts as opposed to my approach using quad resistors, dual transistors, etc. Placement effort/cost machine-wise is similar. My approach uses ~35% more parts, but does sine shaped current at any line voltage, and up to 2800W with E42 transformer, IGBT, soft switching (plus separate magnetics/heatsink thermal management, data logging, statistics). More on the subject can be read on this thread.
The ultimate amplifier SMPS. What comes after LLC? Single stage PFC.
The link points directly to a comparison between Pascal/Powersoft input current waveforms and current waveforms of my variable frequency MCU controlled PFC.
EDIT: That was another dilemma I had with my employer before being fired. He was persuaded by the usual suspects at audio fairs to think that a clean PFC was not worth the effort. He wanted to sell lots. He wanted to sell cheap. He wanted to sell junk.
Maybe someone could verify and post picture demonstrating that line current wise the Powersoft Litemod is as dirty as Pascal SPRO?
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Thank you Erica.C
Can help me again with this diode?
Its marked G15 VJN28, I think is BZG03C15, zener 15v 3w its corect this?
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Hello, can anyone share the final stage circuit diagram (Powersoft Litemod cs000803). I will be very grateful.
The two channel Powersoft LITEMOD uses the driver IC NCP5183 for each pair of output MOSFETs (PSMN102-200Y)
The four channel Powersoft LITEMOD 4HC uses the driver IC Si8234BB for each pair of output MOSFETs (IRFH5020)
These modules have useless protection. Both the 2ch and the 4ch.
Almost every module I have seen with shorted output FETS has also caused failure of the SMPS FETS as well. Not to mention changing any components that are soldered onto the heat conduction buttons on the LITEMOD series is much more challenging than it would be if they had just using through hole TO-220's. What were they thinking?
From the amount of blown modules I have collected its clear that using these much smaller parts right on the edge of their ratings is not any good for reliability.
The four channel Powersoft LITEMOD 4HC uses the driver IC Si8234BB for each pair of output MOSFETs (IRFH5020)
These modules have useless protection. Both the 2ch and the 4ch.
Almost every module I have seen with shorted output FETS has also caused failure of the SMPS FETS as well. Not to mention changing any components that are soldered onto the heat conduction buttons on the LITEMOD series is much more challenging than it would be if they had just using through hole TO-220's. What were they thinking?
From the amount of blown modules I have collected its clear that using these much smaller parts right on the edge of their ratings is not any good for reliability.