Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency layout guidelines, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths.
The selection of input and output capacitors depends on the specific application requirements, such as voltage rating, capacitance value, and ESR. A general guideline is to use low-ESR ceramic capacitors with a voltage rating of at least 1.5 times the input voltage. The datasheet provides some guidance on capacitor selection, but it's recommended to consult with capacitor manufacturers for specific recommendations.
The TPS61141DRCR has an operating junction temperature range of -40°C to 125°C, but the maximum ambient temperature range depends on the specific application and the thermal design of the system. A general guideline is to derate the ambient temperature by 10°C to 20°C to ensure reliable operation.
To ensure stability, follow the recommended PCB layout, use the correct input and output capacitors, and ensure that the output voltage is properly decoupled. Additionally, the datasheet provides a stability analysis section that provides guidance on calculating the stability of the converter.
The TPS61141DRCR has a maximum output current capability of 1.2A, but this can be affected by the input voltage, output voltage, and ambient temperature. It's recommended to consult the datasheet and perform thermal calculations to determine the maximum output current capability for a specific application.
TPS61141DRCR datasheet
by Texas Instruments
Findchips
Findchips