TI recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern on the top layer to minimize thermal resistance. A minimum of 2 oz copper thickness is recommended for the PCB.
To ensure stable output voltage regulation, it's essential to decouple the input and output pins with ceramic capacitors (e.g., 10uF and 22uF, respectively) and to use a low-ESR output capacitor (e.g., 22uF, 6.3V). Additionally, ensure the input voltage is within the recommended range (4.5V to 18V).
The TPS92391RHBR can deliver up to 3A of output current, but this is dependent on the input voltage, output voltage, and thermal conditions. It's essential to check the thermal derating curves in the datasheet to ensure the device can handle the required output current.
The enable pin (EN) is an active-high input. To enable the device, connect EN to a logic high level (e.g., VCC or a digital output). To disable the device, connect EN to a logic low level (e.g., GND). Ensure the EN pin is properly terminated to prevent unwanted oscillations.
The power good (PG) output pin is an open-drain output that indicates when the output voltage is within the specified regulation range. It can be used to monitor the output voltage and provide a signal to other components or microcontrollers when the output voltage is stable.
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TPS92391RHBR Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
