ZHCSE52B September 2015 – May 2019 TPS57140-EP
PRODUCTION DATA.
This example details the design of a high-frequency switching regulator design using ceramic output capacitors. The designer must know a few parameters in order to start the design process. The determination of these parameters is typically at the system level. This example starts with the following known parameters in Table 1.
| DESIGN PARAMETER | VALUE |
|---|---|
| Output voltage | 3.3 V |
| Transient response, 0- to 1.5-A load step | ΔVout = 4% |
| Maximum output current | 1.5 A |
| Input voltage | 12-V nominal, 8 to 18 V |
| Output voltage ripple | <33 mVpp |
| Start input voltage (rising VIN) | 7.25 V |
| Stop input voltage (falling VIN) | 6.25 V |