TPS62102DR

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TPS62102DR Application Field and Working Principle

The TPS62102DR is a DC-DC switching regulator in Texas Instruments’ DC-DC and LED driver portfolio. Using the company\'s DirectFET® and NexFET™ technologies for improved performance and reduced power losses, the TPS62102DR is well suited for applications in battery powered and other low power systems. Its significant features, application field and working principle are as follows.

Features

• Wide Input Voltage Range: The TPS62102DR is designed to work with a wide input voltage range, from 2.5V to 6V.
• Small Footprint: The device offers a small operational footprint, with a 2mm x 4mm footprint for the device.
• Multiple Outputs: The TPS62102DR is capable of generating multiple outputs, from 1.5V to 5.5V.
• Low Quiescent Current: The device has a very low quiescent current, from 0.08µA in Shutdown Mode to <20µA in Active Mode.
• Max Output Current: The maximum output current for the device is 1A, making it suitable for applications such as core-rail post-regulation in LPDDR applications.

Application Field

The TPS62102DR is designed for use in low power consumer and industrial applications, such as handheld and portable electronic devices, where the input power source can range from 2.5V to 6V. Thanks to its high efficiency and low quiescent current, the device is well suited for applications that require extended battery life.

The device can also be used in LED driver applications, combined with LED dimming controllers, where it can provide the necessary voltage regulation for high brightness LED arrays. Furthermore, the device can be used in core-rail post regulation for LPDDR memory applications, where a stable output voltage for the memory core is necessary for its proper operation.

Working Principle

The TPS62102DR utilizes a step-down, buck topology for voltage regulation. By controlling the switches, the device can step down the input voltage to the required output voltage, maintaining the output voltage within tolerance. The device uses a pulse-width modulation (PWM) control scheme for regulation, where power is delivered to the output in small bursts, or “pulses”.

The device is constructed using Texas Instruments’ DirectFET® and NexFET™ MOSFET technologies, which allow for improved performance and reduced power losses. The output is protected against over-voltage conditions, thermal overload and overtemperature conditions by using PGOOD and comparator-based logic.

Conclusion

The TPS62102DR DC-DC switching regulator makes use of TI’s DirectFET® and NexFET™ technologies for improved performance and reduced power losses. Its wide input voltage range, small footprint and multiple output makes it suitable for use in a variety of consumer and industrial applications, ranging from LED driver, core-rail post regulation for LPDDR memory and other low power system applications. Its step-down, buck topology voltage regulation scheme, combined with the use of PWM control, makes the device well suited for applications requiring extended battery life.

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