Texas Instruments provides a recommended PCB layout in the TPS24710DGS evaluation module (EVM) user's guide, which includes guidelines for component placement, trace routing, and thermal management. Following this layout can help minimize noise, reduce EMI, and improve overall performance.
The input capacitor should be selected based on the input voltage ripple, output current, and operating frequency. A general rule of thumb is to choose a capacitor with a capacitance value of at least 10uF to 22uF, with a voltage rating of 1.5 to 2 times the input voltage. Additionally, the capacitor's ESR (Equivalent Series Resistance) should be low to minimize voltage ripple.
The TPS24710DGS is rated for a maximum output current of 3A, but this can be limited by the thermal performance of the device and the PCB. In practice, the maximum output current may be lower, depending on the specific application and operating conditions.
The TPS24710DGS has a built-in voltage regulator that can be configured for a specific output voltage using external resistors. The output voltage is set by the ratio of the resistors R1 and R2, according to the formula: Vout = 0.8V x (1 + R2/R1). The recommended values for R1 and R2 can be found in the datasheet.
The EN (Enable) pin is used to turn the device on or off. When the EN pin is high, the device is enabled and operates normally. When the EN pin is low, the device is disabled and enters a low-power shutdown mode. The EN pin can be connected to a logic signal or a switch to control the device's operation.
TPS24710DGS datasheet
by Texas Instruments
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