TL5001IP

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TL5001IP Application Field and Working Principle

TL5001IP is a switching DC-DC controller chip which belongs to the category of PMIC - Voltage Regulators - DC DC Switching Controllers. it is designed for use in a range of applications including power-management systems, indoor lighting, computer monitors, and audio amplifiers. It is capable of delivering output current up to 8A, and can be used to create simple buck, boost, buck-boost, and SEPIC configurations.

Overview of Application Field

The TL5001IP is a highly integrated switching controller chip, which is mainly used to adjust and manage the power supply and distribution in power-management systems, such as AC-DC (alternating current-direct current) power conversion, DC-DC (direct current-direct current) voltage conversion, LED driving and current-controlled LED constant current source. It can also be used in equipment such as LED lights and computer monitor displays.

In addition, TL5001IP is also suitable for applications such as motor drives, audio amplifiers and outdoor power supply running on solar energy, as it is equipped with a wide input range, a low quiescent current, and a low output ripple voltage. Its external components, including the timing resistors, are easy to adjust for custom applications, making it suitable for a wide range of applications.

Working Principle

The TL5001IP is an 8-pin DC-DC switching controller which uses Pulse Width Modulation (PWM) for its operation. The device is designed for current-mode operation, based on the Pulse Frequency Modulation (PFM) and Skip Cycle PFM algorithms. The device has an adjustable frequency of up to 2MHz, selectable via an external resistor, and a wide input voltage range of up to 28V, making it suitable for a range of applications.

The TL5001IP includes an integrated level-shift high-side driver that offers drivers with logic level inputs, allowing the device to be used with a variety of output power levels. It also features an internal reference voltage of 0.5V and a temperature-compensated current-limit module that allows for a wide adjustment range (0.1A to 5A). The chip also has overcurrent protection, undervoltage lockout, overvoltage protection, as well as thermal protection.

The TL5001IP has two built-in error amplifiers, allowing the user to create a buck (step-down), boost (step-up), buck BOOST, or SEPIC (Single Ended Primary Induction Coil converter) configuration. It is also capable of working in single or multiple output configurations. The chip allows the user to select between hysteresis (Non-Synchronous) and synchronous versions, and provides a soft-start ramp for the output voltage.

The TL5001IP also has a built-in power-good indicator and two shutdown modes. The first is an active-low mode which initiates measurement of the output voltage to allow control of the chip shut down. The second is a burst mode in which the device runs in a reduced current-limit mode during the standby period, thus significantly decreasing the quiescent current and power consumption.

Conclusion

The TL5001IP device is a highly integrated switching controller chip which is capable of delivering up to 8A of output current and is suitable for a wide range of applications, such as power-management systems, LED lighting, motor drive, audio amplifiers and computer monitors. It can be used to create simple buck, boost, buck-boost, and SEPIC topologies. The device features an adjustable frequency, wide input voltage range,low quiescent current and low output ripple voltage. It also has a built-in level shift high-side driver, an internal reference voltage of 0.5V, a temperature-compensated current-limit module and built in error amplifiers.

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