STM32Nucleo driving a H-bridge

A previous blog post listed Mbed code for generating sinusoidal PWM using an STM32F103 Nucleo board.  A simple H-bridge was connected to the Nucleo board and used to drive a loud speaker.  The circuit happily delivered more than 5W to a load during testing and would have delivered more had I found a suitable power supply.  The H-bridge circuit makes use of IRS2003 gate drivers as shown below.

circuit

The current (red) and voltage (yellow) waveforms produced by the H-Bridge are shown below

ScopeVI

The video clip below allows you hear the 50Hz and 10kHz harmonics produced by the circuit.

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