Texas Instruments provides a recommended PCB layout in the TIC116B datasheet (section 10.2) and in the TIDA-00628 reference design. It's essential to follow these guidelines to minimize electromagnetic interference (EMI) and thermal issues.
The input capacitor selection depends on the input voltage, current, and frequency. A general guideline is to choose a capacitor with a voltage rating at least 1.5 times the maximum input voltage, and a capacitance value between 1uF to 10uF. Additionally, consider the capacitor's ESR, ripple current rating, and temperature coefficient.
The TIC116B can deliver up to 1A of output current, but this is dependent on the input voltage, output voltage, and thermal conditions. It's essential to ensure the device is properly heatsinked and the input voltage is sufficient to support the desired output current.
The TIC116B has a built-in overcurrent protection feature that can be enabled by connecting the OCP pin to a resistor divider network. This sets the overcurrent threshold. When the output current exceeds this threshold, the device will shut down to prevent damage.
The EN (enable) pin is used to turn the TIC116B on or off. When the EN pin is pulled high (above 2V), the device is enabled, and when pulled low (below 0.8V), it's disabled. This pin can be used to implement power sequencing, shutdown, or low-power modes.
