The maximum input voltage that can be applied to the TPS3128E15DBVR is 15V, as specified in the datasheet. However, it's recommended to derate the input voltage to 12V to ensure reliable operation and to prevent damage to the device.
To ensure stability, it's essential to follow the layout guidelines provided in the datasheet, including keeping the input and output capacitors close to the device, using a low-ESR output capacitor, and minimizing the loop area of the power traces. Additionally, the datasheet recommends a specific compensation network to ensure stability.
The minimum output capacitance required for the TPS3128E15DBVR is 10uF, as specified in the datasheet. However, it's recommended to use a higher value capacitor, such as 22uF or 47uF, to ensure stable operation and to reduce output voltage ripple.
The TPS3128E15DBVR is rated for operation up to 125°C, but it's essential to derate the output current and input voltage to prevent overheating and ensure reliable operation. The datasheet provides thermal derating curves to help with this.
The power dissipation of the TPS3128E15DBVR can be calculated using the equation: Pd = (Vin - Vout) x Iout + (Vin x Iq), where Vin is the input voltage, Vout is the output voltage, Iout is the output current, and Iq is the quiescent current. The datasheet provides more information on how to calculate power dissipation.
TPS3128E15DBVR datasheet
by Texas Instruments
