TPS61090RSARG4

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The TPS61090RSARG4 is a DC-DC synchronous buck converter offered by Texas Instruments. It is a member of their Simple Switcher series, featuring ultra-low quiescent current and an integrated inductor. It has a wide input voltage range, from 2.3 Volts to 5.5 Volts, and can be used to generate outputs from 0.6 Volts to 5.3 Volts. The device has a maximum output current of 900 milliamps.

The TPS61090RSARG4 is a DC-DC Synchronous Buck Converter with a peak efficiency of 95%. It features Reverse Current Protection as well as Short Circuit Protection and Over Temperature Protection. It also has Under Voltage Lockout (UVLO) as well as adjustable output voltage, adjustable switching frequency and cycle-by-cycle peak current limit.

The TPS61090RSARG4 is an ideal choice for a wide range of applications such as battery-backed power supplies, USB power applications, automotive power management, portable equipments, point of load applications, mobile handsets, and consumer electronics.

The working principle of this DC-DC synchronous buck converter is as follows:

The TPS61090RSARG4 is a synchronous switching regulator, which switches the inductor current at high frequency. The control circuitry inside the device senses the output current and regulates the inductor current to the required level. It also compares the voltage on the input and output to adjust the duty cycle accordingly.

When the input voltage is greater than the output voltage, the device switches the inductor current up to the set level. By doing this, the current stored in the output capacitor is increased every time the switch is opened. This allows the output voltage to be regulated as per requirement.

When the input voltage is less than the output voltage, the device operates as a current source and charges the output capacitor with a constant current. This helps the device maintain steady output voltage.

The TPS61090RSARG4 is a versatile device, providing ultra-low quiescent current and integrated inductor, making it an ideal choice for a range of portable applications. It has a wide input voltage range, making it suitable for many applications. The control circuitry inside the device ensures accurate output voltage regulation, while the integrated protection features ensure a long life in demanding environments.

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