ZHCSP86E May 2020 – February 2024 UCC5350-Q1
PRODUCTION DATA
The recommended input supply voltage (VCC1) for the UCC5350-Q1 device is from 3 V to 15 V. The lower limit of the range of output bias-supply voltage (VCC2) is determined by the internal UVLO protection feature of the device. The VCC1 and VCC2 voltages should not fall below their respective UVLO thresholds for normal operation, or else the gate-driver outputs can become clamped low for more than 50 μs by the UVLO protection feature. For more information on UVLO, see Section 8.3.4.1. The higher limit of the VCC2 range depends on the maximum gate voltage of the power device that is driven by the UCC5350-Q1 device, and should not exceed the recommended maximum VCC2 of 33 V. A local bypass capacitor should be placed between the VCC2 and VEE2 pins, with a value of 220-nF to 10-μF for device biasing. TI recommends placing an additional 100-nF capacitor in parallel with the device biasing capacitor for high frequency filtering. Both capacitors should be positioned as close to the device as possible. Low-ESR, ceramic surface-mount capacitors are recommended. Similarly, a bypass capacitor should also be placed between the VCC1 and GND1 pins. Given the small amount of current drawn by the logic circuitry within the input side of the UCC5350-Q1 device, this bypass capacitor has a minimum recommended value of 100 nF.