TPS65290LMRHFT

The TPS65290LMRHFT is a multiphase step-down synchronous converter with integrated phase-interleaved FETs designed for mobile, consumer, enterprise and industrial applications. The device integrates two independent fully digital controllers that provide a simple, programmable solution for complex power requirements. It allows for fast transient response and superior thermal performance, combining the efficiency of digital control with the accurate performance of voltage regulation.

The TPS65290LMRHFT is a special purpose voltage regulator and is applicable to almost any consumer or industrial application that needs a multiphase, step-down converter. It allows the designer to achieve high efficacy, fast transient response and a low component count solution.

The working principle of the TPS65290LMRHFT is based on the classic switching mode power supply topology. It uses two independent controllers that can be clocked and ramped independently, providing efficient, accurate and independent power supplies. They are configured to operate in either closed loop or open loop, depending on the application requirements. An internal voltage regulator provides the operating voltage level.

The two independent controllers enable optimized power train control, where adaptive response parameters, including dead-time compensation, ensure maximum efficiency and superior system performance. Each controller uses a reduced on-time pulsewidth modulation scheme to yield superior efficiency, response and noise level. Programmable peak current limit sensing is also built in for possible over current or over temperature protection.

The TPS65290LMRHFT offers various features to protect its application from risks, such as POR (Power On Reset) flag and reset output that can be used to signal sudden voltage drops, as well as automatic fault detection and reporting. It also has current limit, thermal shutdown, under voltage lockout and overvoltage protection.

The device includes an integrated floating drain feedback network that interfaces with the control terminals of both controllers to provide a low skew reference voltage. Voltage output is monitored using a differential amplifier with low offset and drift. The design enables independent phase compensation of the two controllers and ensures high accuracy.

In conclusion, the TPS65290LMRHFT is a special purpose voltage regulator perfect for applications that require high output accuracy and fast transient response. It offers superior thermal performance and a low component count solution. The device offers excellent protection features and a comprehensive software interface for control and monitoring.