A 4-layer PCB with a solid ground plane and a separate layer for the high-current paths is recommended. The datasheet provides a recommended layout, but it's essential to follow good PCB design practices, such as minimizing trace lengths and using wide traces for high-current paths.
Choose an inductor with a high saturation current rating, low DC resistance, and a suitable inductance value. The datasheet provides guidelines for inductor selection, but consider factors like core material, size, and temperature rating. A good starting point is to use an inductor with an inductance value between 1-10 μH and a saturation current rating above 10 A.
The BQ24703RHDR can handle input voltages up to 24 V, but the recommended maximum input voltage is 18 V to ensure reliable operation. Exceeding the recommended input voltage may reduce the device's lifespan or cause it to malfunction.
The BQ24703RHDR has a built-in overcurrent protection feature. To implement it, connect a sense resistor (Rs) between the VIN pin and the GND pin. The device will detect overcurrent conditions and limit the output current accordingly. The datasheet provides more information on how to calculate the sense resistor value and implement overcurrent protection.
The BQ24703RHDR is rated for operation up to 105°C, but its performance and reliability may degrade at high temperatures. Ensure proper thermal design and consider using a heat sink or thermal interface material to maintain a safe operating temperature. Always follow the recommended operating conditions and derating guidelines in the datasheet.
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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.
