Texas Instruments recommends a compact layout with the UC2524ADWG4 placed close to the input capacitors and the output inductor. The input capacitors should be placed as close as possible to the IC's input pins, and the output inductor should be placed near the output pins. A symmetrical layout is also recommended to minimize electromagnetic interference (EMI).
To ensure the UC2524ADWG4 operates within its recommended operating conditions, monitor the input voltage, output voltage, and output current. The input voltage should be within the range of 12V to 42V, and the output voltage should be set using the feedback resistors. The output current should be limited to 2.5A to prevent overheating and damage to the IC.
The bootstrap capacitor (CBOOT) is used to generate the gate drive voltage for the high-side MOSFET. It is charged through the internal bootstrap diode (DBOOT) when the low-side MOSFET is on. The bootstrap capacitor should be selected based on the operating frequency, input voltage, and output current requirements.
The output inductor value can be calculated using the following formula: L = (Vin * (1 - D)) / (f * ΔI), where Vin is the input voltage, D is the duty cycle, f is the switching frequency, and ΔI is the inductor ripple current. The inductor value should be selected based on the desired output current ripple and the physical size constraints.
The UC2524ADWG4 has a thermal pad that should be connected to a heat sink or a thermal plane on the PCB. The thermal pad should be soldered to the heat sink or thermal plane using a thermally conductive material. Additionally, the PCB should be designed to dissipate heat efficiently, and the IC should be placed in a well-ventilated area to prevent overheating.
UC2524ADWG4 datasheet
by Texas Instruments
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