TPS61072DDCR

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The TPS61072DDCR is a monolithic synchronous DC-DC converter specifically designed for battery-powered applications. This DC-DC converter chipset provides up to 1.5 A of output current and operates in a step-up configuration for a wide input voltage range of 2.5 V to 5.5 V. Its rated output voltage is 7 – 18 V, and its switching frequency is user-programmable over a range of 500 kHz to 2.2 MHz. It is an ideal choice for low power devices with limited space and low noise requirements; typically found in digital audio players, DVD players, camcorders, and other digital equipment.

The TPS61072DDCR is a simple, integrated inductor-based synchronous step-up DC/DC converter that uses two external MOSFET devices to provide a regulated output voltage over a wide input voltage range. It includes an integrated high voltage switch FET, voltage feedback, a power MOSFET, and a programmable oscillator system. It also features a flexible I/O interface, which enables smooth transition from pulse width modulation (PWM) mode to pulse frequency modulation (PFM) mode for improved efficiency at light loads. It also offers precise output voltage regulation and fast line transientsresponse.

TPS61072DDCR\'s key features include low quiescent current (<1 µA, typically), high efficiency (>90%), fast transient response, programmable switching frequency between 500 kHz and 2.2 MHz, adjustable soft-start time, thermal shutdown, current limit protection, output voltage accuracy over the full temp. range, low EMI, low profile package options (TSOP-6 & TDFN-8), and wide temperature range of -40°C to +85°C.

The TPS61072DDCR switches between two modes of operation depending on the load conditions and input voltage. The first mode is called Pulse Width Modulation (PWM), where the output voltage is regulated by constant on-time modulation at fixed frequency. The second mode is called Pulse Frequency Modulation (PFM), where the output voltage is regulated by modulating the switching frequency. When in PWM mode, the frequency increases linearly according to load and input voltage. When in PFM mode, the frequency decreases and reaches a minimum value at the light load condition. At a certain load, there is a transition between PWM and PFM modes.

The TPS61072DDCR is available in both through-hole and surface mount packages and is designed for space-constrained applications. Its main applications are a wide range of portable and battery-powered products, such as audio players, smart phones, digital cameras, notebook computers, and so on. It is an ideal replacement for the traditional linear regulator solution, providing the benefits of better power efficiency and lower power consumption.

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