TPS62821DLCR Integrated Circuits (ICs)

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The Texas Instruments TPS62821 is an advanced high-frequency, two-phase, synchronous step-down converter. The device is targeted for applications ranging from 3V to 6V inputvoltage buck supplies to low voltage battery-powered systems. The TPS62821DLCR is a small, highly-integrated, synchronous-switching buck regulator that offers multiple control, protection and performance features.

The TPS62821DLCR has an efficient synchronous rectifier architecture that eliminates the need for an external Schottky diode, delivering excellent efficiency performance. It is capable of delivering 3A of continuous output current from a 2mm x 2mm VQFN-8 package.

The TPS62821DLCR is a drop-in replacement for a discrete solution, freeing board space and giving design simplification and board layout improvements. The TPS62821DLCR\'s wide input voltage range is an ideal solution for applications such as cellular phones, PDAs, digital still cameras and other portable devices.

Application Field:

The TPS62821DLCR is ideally suited for powering high-performance ASICs, FPGAs, DSPs and microprocessors, such as Intel® Atom™, ARM®, and other light-load applications. It is designed to support microprocessor core voltages, providing low noise and fast transient response.

The TPS62821DLCR is ideal for applications that require a compact size, high efficiency, and cost effectiveness. It is also well-suited for charging Lithium-ion batteries, by enabling constant current/constant voltage charge control, to achieve accurate and stable charging. The device also includes advanced protection features for over-current protection, thermal protection and short circuit protection.

Working Principle:

The TPS62821DLCR uses a synchronous rectifier architecture to deliver efficient and reliable power conversion. The TPS62821DLCR consists of an integrated driver and two synchronous rectifier MOSFETs to reduce power losses and extend battery life. The integrated driver also eliminates the need for an external gate driver and allows for a wide Vin range of up to 6V. The switching frequency of the TPS62821DLCR is adjustable between 500kHz and 1.4MHz.

The TPS62821DLCR has a wide input voltage range of 2V to 6V and can deliver up to 3A of continuous current. It has excellent efficiency—up to 95%—which helps reduce power losses and extend battery life. The TPS62821DLCR also features a low operating current, making it suitable for power-sensitive applications.

The TPS62821DLCR has a wide range of programmable features. It has adjustable switching frequency, current limit, soft-start, load-line, and input voltage tracking settings. The device also provides thermal overload protection, over-voltage, and reverse-voltage protection, as well as built-in current-sense amplifier to monitor output current and protect against overloads.

In addition, the TPS62821DLCR integrates a digital phase-locked loop (PLL) that is capable of generating an digital phase differential output for precise synchronization with other clock sources. This helps reduce noise and EMI radiation and improves system accuracy.

The TPS62821DLCR is available in a small, lead-free, and RoHS-compliant VQFN-8 package and delivers cost-effective and reliable performance for high-power applications. The device has a low internal operating current, making it ideal for low-power applications.

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