The recommended bootstrap capacitor value is 10nF to 100nF, depending on the specific application and switching frequency. A larger capacitor value can help to reduce voltage ripple, but may also increase the risk of capacitor resonance.
To ensure proper dead-time control, the dead-time should be set to a value that is greater than the sum of the turn-on and turn-off times of the power MOSFETs. The recommended dead-time value is typically between 100ns to 500ns, depending on the specific application and switching frequency.
The maximum allowable voltage on the VCC pin is 15V, but it is recommended to keep it below 12V to ensure reliable operation and to prevent damage to the device.
The UVLO feature is enabled by default and is set to 10.5V. If the VCC voltage falls below this threshold, the device will shut down. To disable UVLO, connect the UVLO pin to VCC. To adjust the UVLO threshold, connect a resistor divider network between VCC and UVLO.
To minimize electromagnetic interference (EMI) and ensure reliable operation, it is recommended to follow a star-point grounding scheme, keep the high-frequency nodes (e.g. bootstrap capacitor and gate drive signals) away from sensitive analog nodes, and use a solid ground plane to reduce noise and radiation.
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