How to Use D24V90F5: Examples, Pinouts, and Specs

The D24V90F5 is a high-performance DC-DC step-down voltage regulator capable of delivering a stable 5V output from a wide input voltage range of 6V to 36V. With a maximum output power of 90W, this regulator is designed for applications requiring high efficiency and reliability. Its compact design and robust features make it suitable for powering microcontrollers, sensors, communication devices, and other electronic systems.

• Powering microcontrollers (e.g., Arduino, Raspberry Pi)
• Robotics and automation systems
• Battery-powered devices
• Industrial control systems
• Portable electronics

1. Connect the Input Voltage:

   • Connect the VIN pin to a DC voltage source within the range of 6V to 36V.
   • Ensure the input voltage is stable and within the specified range to avoid damage.

2. Connect the Ground:

   • Connect the GND pin to the ground of the input voltage source and the load.

3. Connect the Output:

   • Connect the VOUT pin to the load requiring a 5V supply.
   • Ensure the load does not exceed the maximum output current of 18A.

4. Enable the Regulator:

   • To enable the regulator, apply a high logic level (e.g., 3.3V or 5V) to the ENABLE pin.
   • To disable the regulator, apply a low logic level or leave the ENABLE pin unconnected.

5. Add Capacitors (Optional):

   • For improved stability, you can add input and output capacitors close to the regulator. Use low-ESR capacitors with values recommended in the datasheet.

• Heat Dissipation: At high currents, the regulator may generate heat. Use a heatsink or ensure proper ventilation to maintain safe operating temperatures.
• Input Voltage Range: Do not exceed the maximum input voltage of 36V to prevent damage to the regulator.
• Load Requirements: Ensure the connected load does not draw more than 18A to avoid overloading the regulator.

The D24V90F5 can be used to power an Arduino UNO by providing a stable 5V supply. Below is an example circuit and Arduino code to demonstrate its usage.

• Connect the VIN pin of the D24V90F5 to a 12V DC power source.
• Connect the GND pin to the ground of the power source and the Arduino UNO.
• Connect the VOUT pin to the 5V pin of the Arduino UNO.

// Example code to blink an LED connected to pin 13 of the Arduino UNO
// Ensure the D24V90F5 is providing a stable 5V supply to the Arduino

void setup() {
  pinMode(13, OUTPUT); // Set pin 13 as an output
}

void loop() {
  digitalWrite(13, HIGH); // Turn the LED on
  delay(1000);            // Wait for 1 second
  digitalWrite(13, LOW);  // Turn the LED off
  delay(1000);            // Wait for 1 second
}

1. No Output Voltage:

   • Check if the ENABLE pin is connected to a high logic level.
   • Verify the input voltage is within the specified range (6V to 36V).
   • Ensure proper connections to the VIN, GND, and VOUT pins.

2. Overheating:

   • Ensure the load does not exceed the maximum output current of 18A.
   • Use a heatsink or improve ventilation to dissipate heat.

3. Output Voltage Fluctuations:

   • Add low-ESR capacitors to the input and output for improved stability.
   • Check for loose or poor connections in the circuit.

4. Regulator Not Enabling:

   • Verify the ENABLE pin is receiving a high logic level.
   • Check for any shorts or incorrect wiring.

Q: Can the D24V90F5 be used with a 24V input?
A: Yes, the D24V90F5 supports input voltages up to 36V, so 24V is within the acceptable range.

Q: What happens if the input voltage exceeds 36V?
A: Exceeding the maximum input voltage can damage the regulator. Always ensure the input voltage stays within the specified range.

Q: Is the D24V90F5 suitable for battery-powered applications?
A: Yes, its high efficiency and wide input voltage range make it ideal for battery-powered systems.

Q: Can I leave the ENABLE pin unconnected?
A: Yes, leaving the ENABLE pin unconnected will disable the regulator. To enable it, connect the pin to a high logic level.

This concludes the documentation for the D24V90F5. For further assistance, refer to the manufacturer's datasheet or contact technical support.