TL2575HV-05IKTTRG3

TL2575HV-05IKTTRG3 Application Field and Working Principle

TL2575HV-05IKTTRG3 is a low-voltage DC-DC switching regulator integrated circuit (IC) manufactured by Texas Instruments. It’s a synchronous step-down DC-DC converter device designed for use in low- and medium-power applications, providing 5-A output current over a wide input voltage range. It belongs to the category of PMICs (power management ICs) - voltage regulators - DC-DC switching regulators.

Application Field

TL2575HV-05IKTTRG3 is widely adopted in the power supplies of industrial electronics, such as instrumentation, automation, motor control, datacom, etc. It can also be used in portable and battery powered equipment, such as cell phones, PDAs and notebook computers. No-load operation is less than 6-mV, which is suitable for low power requirements.

Working Principle

The TL2575HV-05IKTTRG3 integrates synchronous buck MOSFETs and necessary compensation including frequency compensation, two pulse-width modulation controllers, and a voltage reference. The input capacitor and diode must be connected externally for proper device operation. It provides a stable 5-A output current, with a wide 2.85-V to 15.5-V input voltage range. It also features current-sharing capability for paralleled circuit designs and low stand-by quiescent current.

The switching regulator is based on the basic inductor-diode-capacitor buck converter circuit. TL2575HV-05IKTTRG3 IC uses a current-mode, pulse-width modulation control loop to regulate the output voltage. The IC senses the current passing through the inductor then adjusts the PWM duty cycle to maintain level output voltage. In order to minimize ripple with heavy load steps, external compensation methods are necessary. This power IC also provides in-built over-voltage, over-current and thermal-shutdown protection features.

Conclusion

TL2575HV-05IKTTRG3 is a low-voltage DC-DC switching regulator designed for a wide range of industrial, mobile and battery-powered applications. It’s a 5-A synchronous step-down DC-DC converter with a wide input voltage range, small footprint and simultaneous current-sharing capability. It has a low quiescent current consumption, integrated over-voltage, over-current and temperature protection, along with external compensation for high-efficiency. This DC-DC switching regulator is a great choice for various industrial and mobile power-supply designs.