JAJSON4 May 2022 TPS92643-Q1
PRODUCTION DATA
In addition, a small case size 100-nF ceramic capacitor must be used across VIN to PGND, immediately adjacent to the device. This usage provides a high-frequency bypass for the control circuits internal to the device. These capacitors also suppress SW node ringing, which reduces the maximum voltage present on the SW node and EMI.
The capacitance can be increased to further limit the input voltage deviation during PWM dimming operation.