ZHCSG44F June 2017 – October 2024 TPS650864
PRODUCTION DATA
To ensure the internal high-side gate drivers are supplied with a stable low-noise supply voltage, a capacitor must be connected between the SWx pins and the respective BOOTx pins. TI recommends placing ceramic capacitors with the value of 0.1 µF for the controllers. During testing, a 0.1-µF, size 0402, 10-V capacitor is used for the controllers.
TI recommends reserving a small resistor in series with the bootstrap capacitor in case the turnon and turnoff of the FETs must be slowed to reduce voltage ringing on the switch node, which is a common practice for controller design.