TPS62002DGSR Integrated Circuits (ICs)

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The TPS62002DGSR is a DC/DC buck converter power management integrated circuit (PMIC) that provides a simple, configurable, and easy-to-use power-management solution for operations in the LCD display backlight market. Operating between an input voltage of 5.5 V and 28 V and delivering up to 2.25 A of output current, this device is suitable for a variety of applications such as automotive, consumer electronics, tablets, notebook, networking, and industrial systems.

The TPS62002DGSR consists of a power switch, a non-synchronous buck controller, and various protection circuits. The peak current detection allows the power switch to run in either Continuous Conduction mode (CCM) or Discontinuous Conduction mode (DCM) at any operating condition without compromising its efficiency. For ease of use, the TPS62002DGSR features cycle-by-cycle current limitation to ensure that the current remains constant during operation and does not exceed the current limit threshold. The device also features a linear slope compensation circuit to reduce input ripple and output voltage overshoot.

The TPS62002DGSR is available in an exposed pad, 5 mm by 5 mm QFN (quad flat no-lead) package. It is rated to operate over the temperature range of -40 degree C to 125 degree C. Additionally, this device comes with a wide range of features such as auto-restart, under voltage lock-out (UVLO), double pulse suppression (DPS), pre-bias start-up, and thermal shutdown. These features not only provide high-efficiency operation and protection, but also make the device user friendly and cost effective.

In terms of application field and working principle, the TPS62002DGSR is applicable to a wide range of applications including LED backlighting, general-purpose illumination, automotive LED lighting. With its advanced power management capabilities and wide operating concept, it can be used in point-of-load applications, and can be used to distribute power in systems that rely on alternative power sources.

The working principle of this device is simple. It is composed of a main power switch controlling the current by managing the input voltage and conducting the output current to the external load. The maximum load current is determined by cycle-by-cycle current limit. The voltage at the output is compared with the reference voltage to adjust the duty cycle and regulate the output voltage. Moreover, the slope compensation circuit compensates for even current fluctuations during load transients, resulting in an overall better ripple performance.

The TPS62002DGSR is a versatile DC/DC buck converter power management integrated circuit (PMIC) designed to reduce the cost and complexity of power-supply designs, meeting the stringent requirements of various applications. Its advanced features make it suitable for use in applications that require high efficiency, quick response, and great performance.

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