TPS72718DSER

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The TPS72718DSER is a low-dropout, one- and two-channel, high-current linear regulator, developed and released by Texas Instruments Inc. It is categorized in the Power Management and Interface (PMIC) segment and Voltage Regulators sub-segment, specifically in the Linear category.

The semiconductor between the input and output pins of the device comprises 60V MOSFET with a charge pump connection. It is one of the few linear regulator products from TI that boasts of a wide operating temperature range from -20°C to 125°C.

The TPS72718DSER is designed for a wide range of load conditions, for instance, it can handle a high-current load of 12 A in the Two-channel mode, both unloaded or under load. It also supports dynamic current balancing with one or two channels. The device also comes with various external components and various control functions controlled by I2C.

The maximum input voltage is 12 V, while the output voltage is adjustable ranging from 0.8 V to the input voltage. The device has two independent outputs: one of them supports output voltage up to 8 V and the other supports 0 V to 8 V regulation. Its unified output voltage range of 0.8 V to 12 V enables efficient design of multiple power rails.

The device also incorporates frequency derating as a means of thermal protection. The frequency of the oscillator decreases as it reaches its maximum power draw limit thus reducing its power consumption and temperature. The device reduces its quiescent current to 11 μA at 230 Hz in its sleep mode.

The TPS72718DSER is designed for a wide range of applications. It is an essential power management device for space-constrained embedded systems with distributed power architectures. Its features are suitable for industrial and instrumentation, home and commercial appliances, automotive and power distribution systems.

In general, the TPS72718DSER device works by converting a higher input voltage to a lower output voltage but with very little dropout voltage. The device can be regarded as an active load, in that the output voltage is actively tracked by the input voltage, thus preventing the output from being over or undervoltaged. The current regulation loop actively adjusts the duty cycle off the internal MOSFET in order to maintain the output voltage. To provide high-efficiency and minimal noise, the device uses a dual-mode control structure with complex feedback loops. The feedback loops are used to regulate both the output voltage and the operating frequency.

The device comprises proprietary technologies like Internal Power-Detector, Adaptive Transconductance Amplifier Technology, Precision-controllable Boost Regulator, Frequency Synchronization and Temperature-compensated Regulation Circuit (or TRM). The internal Power-Detector technology allows the device to detect the input voltage without relying on external voltage divider circuitry, while the Adaptive Transconductance Amplifier Technology ensures a high output accuracy and low noise. The Precision-controllable Boost Regulator allows the output voltage to be precisely regulated while the Frequency Synchronization feature allows the device to synchronize the output frequency to that of the system. Finally, the Temperature-compensated Regulation Circuit (or TRM) provides high stability over the voltage temperature range.

In conclusion, the TPS72718DSER is an advanced and state-of-the-art linear voltage regulator device from Texas Instruments Inc, with wide application field and sophisticated working principle; It excels when it comes to space-constrained embedded systems and distributed power architectures. It employs various proprietary technologies along with frequency derating, low-dropout voltage, and current-balancing capabilities to provide reliable and efficient power supply for its users.

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