ZHCSQ16 December 2022 TPS22995
PRODUCTION DATA
When the switch is enabled, the output capacitors must be charged up from 0 V to VIN. This charge arrives in the form of inrush current. Use the equation below to calculate inrush current.
where
where
The TPS22995 has very fast rise times with CT pin open. The typical rise time is 127 μs at VBIAS = 5.5 V, VIN = 5.5 V, RL = 100 ?, and CL = 0.1 μF. This rise time results in an inrush current of 1.59 A. According to Table 8-1, using RT = 10 k? results in a rise time of 1520 us, which limits the inrush current to 176 mA. Alternatively, can be used to determine the capacitor needed.