BD9703CP-V5E2

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Introduction

BD9703CP-V5E2 is a DC-DC switching regulator for discrete components. It is a solution for a wide range of industrial applications, including automotive, computing, lighting, communications, and other space-constrained applications. It offers an adjustable output voltage with a high power density and an advanced features set that provides good system performance in a very small (WL) package.

Applications and Features

BD9703CP-V5E2 is designed to help reduce system costs and simplify power supply design. It features a low quiescent current mode that conserves power, an adjustable output voltage with a wide range (7V to 36V), and high power efficiency. The device also includes a integrated over-temperature, under-voltage, and over-voltage protection. It supports a wide operating temperature range, from -40°C to +105°C, and offers programmable PWM auto-restart, programmable frequency and synchronization modes.

BD9703CP-V5E2 has a wide range of applications in everything from industrial computers, communication systems, control systems, medical equipment, etc. It is an ideal solution for automotive applications, such as on-board DC-DC converters and vehicle display power supplies. In addition, BD9703CP-V5E2 can be used in the lightning applications, such as LED drivers, solar cells and high voltage dc-dc converters. It also finds its use in networks, computer systems, and other critical applications.

Working Principle

The BD9703CP-V5E2 DC/DC switching regulator consists of an internal PWM control block, a power stage and two feedback systems. The PWM control block logically generates a PWM signal based on the feedback signals received from the powered circuit and the on-board error amplifier. The power stage consists of a power MOSFET switch, an inductor, a diode, and a capacitor. The power stage switches the power converting circuit on and off based on the PWM signal. The inductor stores the energy during the switching interval, and the capacitor stores the energy for equally sharing the charge current among the output terminals. The two feedback circuits measure the output voltage and current. The error amplifier compares the input reference voltage and the output feedback voltage and adjusts the drive of the power MOSFET switch accordingly. The current limit comparator monitors the current flowing through the power MOSFET switch.

The BD9703CP-V5E2 is an internal voltage mode control DC to DC converter with integrated protection functions. Its over-voltage protection (OVP) and under-voltage protection (UVP) monitors for output voltage and current, and provides an accurate regulation of output voltage. The device includes adjustable frequency and synchronous modes. The frequency can be adjusted using external resistor. Synchronization through an external square wave signal can also be achieved. An internal temperature sensor locks the output voltage when the operating temperate exceeds the specified thresholds. In addition to the protection features, the device features current limit, dynamic voltage scaling, soft start, and negative voltage support.

Conclusion

BD9703CP-V5E2 is a high-performance DC to DC converting regulator. It provides an adjustable output voltage with a wide range (7V to 36V), good system performance in a very small (WL) package, and many integrated features. It is ideal for automotive, computing, lighting, communications, and other space-constrained applications. It offers a wide range of protection functions and adjustable parameters, like frequency adjustment and voltage scaling, to meet any application requirements.

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