2014年11月13日 · Thus, when current is cut off suddenly (exactly what an h-bridge wants to do, especially when controlled as a PWM), \$\frac{di}{dt}\$ gets extremely large and there is an associated very large spike in voltage. The diodes protect the MOSFETs from these spikes.

2020年5月9日 · I also understand the working of H-Bridge configuration. However, I could not understand how those diodes are acting as flyback diodes in this configuration and also why we don't need them while using MOSFETs but do need while using a darlington pair for example.

2019年7月19日 · I'm working on designing a half H-bridge circuit around an IR2184 Mosfet driver chip. I've had limited success with it. Ideally it will allow me to drive a 12V/4A bilge fan when I get it working. One iteration had the fan wanting to kick over but never full starting. Something I've attributed to bootstrapping on my HS driver.

2024年11月25日 · If all the MOSFETs in the H-bridge are off, and the motor is turning, then it will act as a generator. The MOSFET body diodes will act as rectifiers, and rectified voltage from the motor will appear on the H-bridge supply rail. Thus there is a possibility of over-voltage, but it depends on voltage and energy.

2022年10月18日 · I was watching this video tutorial on H-bridges. The video presenter said that when one input is HIGH and the other LOW, the output of the H-bridge is Vcc/2, while in the other case, it is -Vcc/2. In other sources, I saw that the outputs are Vcc and -Vcc. What exactly is …

2020年7月5日 · Are there any disadvantages in measuring H Bridge current only via 1 shunt resistor? Since it will be made by hand on a perf board the only disadvantage will be the possible longer wires that connect both drains of the lower N FET half bridges to the shunt resistor. Mosfet driver will be ir2110/13 but that is a discussion for another post :) .

Given the below H-Bridge, how do you calculate the current through the conduction paths? This particular IC, the L298, has a per-bridge limit of 2A - so I know the upper limit. If I were to place a motor across the leads then, based on the motor's load, I would have a rough idea via the datasheet of that motor.

2018年7月25日 · or using 2 pmos in high side and 2 nmos in low side of h-bridge? what are the advantages and disadvantages of using each one ? if our system is intended to drive a particular inductive load continuously for 10 years with switching frequency below 50Hz, which one seems to be more reliable and durable?

2023年2月2日 · Cause of shoot-through in H-bridge. 9. Snubbing DCM (nonsynchronous) Buck converter. 3.

2023年3月19日 · My circuit now works as intented and even works in FULL-BRIDGE mode. I am still not sure why LTspice is showing shoot-through. Even using Simon's miller clamp circuit didn't do much on the simuluations, but his answer proved to be useful in supressing ringing and quickening turn off times