TPS61031PWP

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The TPS61031PWP is a 4.5 V to 16 V input, fixed frequency, current-mode pulse-width modulator (PWM) for DC/DC voltage regulation applications that provides two integrated N-channel power MOSFETs. It allows regulation from a few tens of milliamps up to 2.6 A while minimizing external parts count. The TPS61031PWP has an adjustable soft-start and allows the user to set the power-good threshold, the output voltage, current limits, and the switching frequency.

The application field of the TPS61031PWP includes applications in the consumer, computer, automotive and industrial markets, such as notebook adapter, consumer electronics, telecom, cordless phone and power tools. With the configuration flexibility of the TPS61031PWP, it can be easily adapted to many system requirements to improve overall system reliability.

The TPS61031PWP, designed for energy efficiency, offers a wide operating temperature range of -40°C to +125°C to support advanced system thermal requirements. The device is offered in several 6-pin, MSOP, and small QFN packages that are solder reflow compatible and halogen free and offer high voltage insulation capabilities meeting the requirements of many international safety standards.

The TPS61031PWP is a current mode switching regulator based on Transition mode Control. This switching regulator consists of an error amplifier and a voltage reference that both control the peak current detected by the internal current sense. Pulse-width modulation (PWM) is utilized to regulate the output voltage of the regulator. The device accepts a wide input voltage range of 4.5 V to 16 V, plus a soft start pin for further input voltage flexibility. The TPS61031PWP also offers various current limit levels to suit different applications. The output voltage is adjustable from 0.7 V to 5.5 V and is useful for powering a wide range of systems or power supplies. The TPS61031PWP operates at a fixed frequency that can be selected by the user and is capable of providing up to 2.6 A at the output.

The TPS61031PWP uses a current mode feedback topology where the current is sensed using an internal current sensing resistor and a current sense amplifier (CSA). This allows the regulator to respond more quickly to fluctuations in input or load current and also limits noise at the output by reducing the sensitivity to noise at the feedback node. A synchronization pin is also provided to synchronize the switching frequency of the regulator to an external clock. This enables the TPS61031PWP to be used in applications where the switching frequency needs to be matched to other devices.

The TPS61031PWP also features an embedded over voltage, under voltage and over temperature protection to protect the internal components from extreme operating conditions. Additionally, an auto restore mode is provided that recovers the output voltage when it has exceeded the protection limits. The device also features a power good output to indicate when the output is within predefined limits.

The TPS61031PWP from Texas Instruments provides a wide range of features and flexibility, making it an ideal solution for applications needing an adjustable and efficient 4.5 V - 16 V DC/DC switching regulator. The device’s combination of current monitoring and protection, wide input voltage range and adjustable output voltage make it ideal for a variety of applications in both portable and fixed power systems.

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