VI-B3V-EY-F1

DC-DC converters are electronic circuits used to step down or step up a DC voltage. The VI-B3V-EY-F1 DC-DC converter is used to convert or step up a 3V nominal input voltage to a fixed 5V output voltage. The converter is designed to operate across a wide temperature range and to handle a wide variety of input voltages.

General Features

• Wide input voltage range - 2.5V to 6.5V
• Fixed 5V output voltage
• Single Ended Inputs
• Integrated Power MOSFET
• High Efficiency Over Load & Line
• Over Current Protection
• Thermal Shutdown
• Low Output Ripple & Noise

Circuit Description

The VI-B3V-EY-F1 DC-DC converter is a step-up (boost) type DC-DC converter. It consists of an integrated, fixed frequency 600kHz PWM current mode control voltage regulator along with a power MOSFET. The internal MOSFET is used as a low impedance switch between the input and the output and it is controlled by the current mode PWM control circuit. The VI-B3V-EY-F1 is designed to regulate a 5V output voltage, with a wide input voltage range of 2.5V to 6.5V.

The converter is designed to keep the output voltage of the converter at 5V, regardless of the input voltage. In order to do this, the control circuit senses the current in the MOSFET switch and uses this to adjust the duty cycle, or on time of the switch, so that a constant output voltage is maintained across the output. This is done by sensing the current in the MOSFET switch using a small current sensing resistor. Considering the voltage drops across the switch and the resistance, the MOSFET current can be accurately measured.

The PWM control circuit also regulates the maximum duty cycle to ensure the low temperature derating required for proper operation. To ensure low output ripple and noise, a large input capacitor is often used. This helps to store energy and reduce output ripple and noise.

Applications

The VI-B3V-EY-F1 DC-DC converter is ideal for a variety of applications including portable electronics, automotive applications, industrial sensing and control, and USB-based power solutions. It is designed to handle a wide variety of input voltages and has a very efficient operation over both line and load conditions. The converter is also designed to operate across a wide temperature range. This makes it well suited for automotive and other industrial applications where the temperature can change drastically in a short amount of time.

Conclusion

The VI-B3V-EY-F1 DC-DC converter is a step-up type voltage converter designed to convert a 3V nominal input voltage to a fixed 5V output voltage. It features a wide input voltage range, an integrated power MOSFET, and is designed to operate across a wide temperature range. The VI-B3V-EY-F1 is ideal for a variety of applications including portable electronics, automotive applications, industrial sensing and control, and USB-based power solutions. It is designed to handle a wide variety of input voltages and has a very efficient operation over both line and load conditions.