H bridge driver
An H-bridge driver module consists of a an H-bridge and a connector for a ds18b20 temperature sensor. The H-bridge is based on the full-bridge configuration and conists of 2 n-channel and 2 p-channel MOSFETs. Transistors are driven by a TC4420 driver. The board features LED indicators for 5V and 12V lines. Output of the module is 12V5A maximum.
The board features an LC low pass filter. Components are the same as used in the 5V3A power supply and the central board. The LC filter circuitry was implemented as any Peltier element has a very quick degradation slope if used in ON-OFF mode. (note, more information)
The TC4420 driver is an inverter, meaning that HIGH input results in LOW output. Both drivers are being controlled directly by ESP32. The cutoff frequency value is 5.91 kHz
Do not connect or disconnect connectors while power is ON. All adjustments must be done ONLY when power is OFF.
Be cautious when working with components that produce heat. Make sure to have the experiment registered and supervised by a safety officer.
