![]() ![]() To avoid this situation you can use a small 5V FAN to blow air on the board or probably use a heatsink attached to the board. You can see on the thermal images below that at 60V input – 5V output the IC gets too hot (>105✬) and if we go for higher outputs (2.5-3A) the IC gets in thermal cut-off. Thermal, Overvoltage, and Frequency Fold back Protection.Low Dropout at Light Loads with Integrated BOOT Recharge FET.High Efficiency at Light Loads with Pulse Skipping Eco-mode™. ![]() Integrated 90-mΩ High Side N-Channel MOSFET.Output 5V (Output Voltage adjustable with R5, R6).The following table lists the R5 values for some common output voltages assuming R6= 10.0kΩ It is strongly recommended to use adequate air flow over the board to ensure it doesn’t go at thermal shutdown. It is recommended to use 1% tolerance or better divider resistors, choose R5, R6 for other output voltages. Note: The output voltage is set by a resistor divider from the output node to the FB terminal. Frequency fold back and thermal shutdown protects internal and external components during an overload condition. A wide switching frequency range allows either efficiency or external component size to be optimized. The output voltage start up ramp is internally controlled to provide a controlled start up and eliminate overshoot. Under-voltage lockout is internally set at 4.3 V but can be increased using the enable pin. ![]() Shutdown supply current is reduced to 2 μA when the enable pin is pulled low. ![]() A low ripple pulse skip mode reduces the no load supply current to 146 μA. Current mode control provides simple external compensation and flexible component selection. The device survives load dump pulses up to 65V per ISO 7637. The TPS54360 is a 60V, 3.5A, step down regulator with an integrated high side MOSFET. Sample applications are: 12 V, 24 V and 48 V industrial, Automotive and Communications Power Systems. This is a 60V to 5V – 3.5A step down DC-DC converter based on TPS54360B from Texas Instruments. ![]()
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