I am currently designing a H-Bridge inverter that will output 120 V RMS at 60Hz from a 170 V DC. I have decided to use 2 PMOS MOSFET for the high side switching and 2 NMOS MOSFETS for low side switching. I have also found a PWM chip
( http://www.datasheetcatalog.org/datasheet/motorola/SG3525AN.pdf ) that has dual output to control 2 sets of MOSFET. My question is how can i use this PWM to drive both PMOS and NMOS at the same time???
Hi, if you whant to drive H bridge arrangement, you can use IR21xxx series for your Hi and Low bridge drivers, eg IR2110,IR2113.you can also down load the datasheet it will help.
Hi,
If you have PMOSFETs that have enough VDS rating, can handle the current and can be appropriately driven, then there is no problem.
Else, you can go for NMOSFETs and drive them with L6384, L6385, IR2110/IR2113, etc.
Hi, I am building a 3 phase bridge circuit for a BLDC motor. I would like to know which is the better way and why?
1) Use 3 N-MOSFET for low side and 3 P-MOSFET for high side with the high side mosfet driven by a NPN transistor or
2) Use N-mosfet for high and low side but use a L6385 driver for the high side
Which method is better? and why? in terms of performance and cost effectiveness
Also, why is a MOSFET the preferred choice over a BJT to act as a switch in a H-bridge?