ZHCSN71E December 2021 – June 2024 TPS62A01 , TPS62A01A , TPS62A02 , TPS62A02A
PRODUCTION DATA
The architecture of the TPS62A0x allows use of tiny ceramic-type output capacitors with low equivalent series resistance (ESR). These capacitors provide low output voltage ripple and are thus recommended. To keep resistance up to high frequencies and to achieve narrow capacitance variation with temperature, TI recommends to use X7R or X5R dielectric.
The input capacitor is the low impedance energy source for the converter that helps provide stable operation. TI recommends a low-ESR multilayer ceramic capacitor for best filtering. For most applications, a 4.7μF input capacitor is sufficient; a larger value reduces input voltage ripple.
The TPS62A0x is designed to operate with an output capacitor of 10μF to 47μF, depending on the selected output voltage, as outlined in Table 8-3.
A feedforward capacitor reduces the output ripple in PSM and improves the load transient response. A 120pF capacitor is good for the 1.8V output typical application.