TPS40007DGQR Integrated Circuits (ICs)

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The TPS40007DGQR is a switching controller specifically designed for high efficiency, high voltage, high current DC/DC converters with auto-restart capability. The device integrates an oscillator, a pulse-width-modulation generator, a burst-mode control, an overvoltage protection, an over current protection, a current-limit comparison circuit, and an output control logic onto a single chip. Utilizing a proprietary architecture, the TPS40007DGQR can provide efficient voltage regulation with precise tuning and excellent regulation stability.

The TPS40007DGQR is used in DC/DC step-down operation to provide constant output voltage. Its pulse-width modulation (PWM) architecture supports multiple frequencies, providing low ripple and low EMI, while the on-chip precision voltage reference ensures excellent regulation stability. The device also provides overvoltage and over-current protection systems, and features internal current-limit sensing that optimizes the loop performance during dynamic load changes. The device can also be configured to operate in auto-restart mode, which provides robustness against output overcurrent events and enables simple power cycling following an extended overload event.

Applications of the TPS40007DGQR include high-efficiency, remote power systems, medium voltage distributed power supply architectures, automotive distributed power systems, UPS systems, DC to DC converters, solar micro-inverters, converters in high-performance motor control, and other DC/DC applications. The device is available in 10-pin, 5mm x 5mm, thermally-enhanced QFN package.

In operation, the TPS40007DGQR begins with its oscillator. The oscillator sets the operating frequency, a parameter that is adjustable with an external clock and/or voltage control. The output pulses from the oscillator drive the switching transistors. The PWM generator generates a precise voltage-feedback regulator while the burst-mode control circuit provides auto-restart capability. Additionally, the device monitors the feedback voltage and adjusts the off time of the switching transistor in order to keep the output voltage constant.

The TPS40007DGQR provides excellent protection features. The Overvoltage Protection (OVP) triggers when the feedback voltage exceeds a certain threshold, turning off the voltage regulator and allowing the application to self-recover. The Overcurrent Protection (OCP) is used to protect against extra-high current during an excessive load condition. Finally, the device implements an Active Low Current Limiting (ALCL) feature, which limits the output current of the regulator under dynamic load conditions.

The TPS40007DGQR is an excellent choice for a variety of DC/DC applications requiring precise voltage control with high efficiency and stability. It is widely used in remote power systems, medium voltage distributed power supply architectures, automotive distributed power systems, UPS systems, DC to DC converters, solar micro-inverters, converters in high-performance motor control, and other DC/DC applications. By utilizing its integrated oscillator, PWM generator, burst-mode control, OVP, OCP, and ALCL circuits, the TPS40007DGQR provides a robust, efficient and reliable voltage regulation solution.

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