TPS40400RHLT Integrated Circuits (ICs)

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The TPS40400RHLT is a programmable switch-mode DC-DC step-down controller developed by Texas Instruments. It has application fields in post-conditioning, power management, motor control, and smart power solutions. This component provides an efficient, cost-effective solution for managing power flow in a wide range of applications, including industrial, automotive, and telecom.

Application Fields

The TPS40400RHLT is designed to efficiently supply power in a wide variety of applications, such as post-conditioning, motor control, and smart power solutions. It has versatile inputs, programmable CCM and DCM operation, and configurable fault flags. This enables the controller to meet numerous design needs, including high-side and low-side synchronous buck converters, dual-phase configurations, and switched-capacitor solutions for load-shearing applications.

With its programmable switching frequency, the TPS40400RHLT can be used in a wide range of applications, including automotive and industrial solutions. The low-quiescent current helps maximize efficiency and light-load performance, while the large package helps ensure the suitability of the design in thermally limited applications. With the industry-standard 130 °C junction temperature rating, designers have the flexibility to use the space-saving package in automotive, industrial, and telecom solutions in their applications.

Working Principle

The TPS40400RHLT works on the principle of pulse width modulation (PWM). It operates in either continuous conduction mode (CCM) or discontinuous conduction mode (DCM) to accurately modulate the voltage and current of the output waveforms. The output voltage levels and ripple are adjustable by programming the pulse width of the PWM signal.

The TPS40400RHLT also has a wide range of protection features and fault flags. The chip can detect overvoltage, undervoltage, overcurrent, and overtemperature conditions, and alert the system via the INT0 and INT1 pins, or the PMW pin. Additionally, the chip has a 10s latency for latch-off overcurrent protection, allowing for reliable and safe operation.

Conclusion

In conclusion, the TPS40400RHLT is a programmable switch-mode DC-DC step-down controller designed to provide efficient, cost-effective power management solutions in a variety of applications, including post-conditioning, motor control, and smart power solutions. It works on the principle of PWM, and offers a wide range of protection features to ensure safe and reliable operation. It is suitable for automotive, industrial, and telecom solutions, and is rated for use with a junction temperature up to 130 °C.

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