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.

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 :) .

Basically a H bridge is used in a lot of ESCs but a H bridge on its own isn't an ESC. A helicopter would use a collection of parts that could be described as an ESC but it won't use a H bridge; it would use open collector/drain transistor drivers because that is more efficient than a H-bridge.

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 …

2013年1月26日 · If you are driving a motor with a half-bridge or H-bridge and PWM or similar, you have regenerative braking. Let's consider a half-bridge, since for this analysis we will run the motor in only one direction: First, let's consider non-regenerative braking. If the bridge output is high (S1 closed, S2 open), the motor will accelerate to full speed.

2021年8月16日 · I'm creating an H-bridge to control a torque motor (TM-60). For this, I'm using an H-bridge consisting of 4 N-channel MOSFETS (FCP165N65S3) and the gate-driver LTC4446. I'm using LTSPice to simulate. This is what I've sat up so far: However, I got stuck when I had to set up the PWMs. The MCU used is NXP S32K146, and I want to switch at 20 kHz.

2017年2月6日 · Ultrasonic emission sources somewhat behave and work the same way as speakers or buzzers. Using a [-Vcc to Vcc] range (with a H-Bridge) is a common practice in class D audio amplifiers to double the peak-peak voltage across the membrane. So that's all right!

2021年1月22日 · The low-side of the half-bridge must periodically turn on (usually through normal operation) to allow a current path to refresh the bootstrap cap. They can be adapted for continuous gate drive with charge pumps and such which is more complicated but cheaper than a floating supply. Note: a half-bridge is one half of an H-bridge.

The reference schematics in the datasheet could be useful. Basically, the device is a full H bridge and PWM driver where you are supposed to add LC filters to form a pair of DC to DC converters. It also has current sense circuitry. The datasheet also has an example circuit for closed-loop temperature control with an analog PID controller.