TPS62272DRVR

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TPS62272DRVR Application Field and Working Principle

The TPS62272DRVR is a high efficiency DC-DC step-down converter that operates from 2.5V to 24V input and provides up to 2A (or 3A with or without external P-channel MOSFET) of continuous output current. The TPS62272DRVR is configured as a step-down converter capable of handling a wide input voltage range. It is optimized for high efficiency applications and provides improved light load efficiency with low dropout operation due to its current-mode controller design. It offers additional features such as adjustable output voltage, a high power-on reset, internal soft-start, and programmable over-temperature protection (OTP).

Application Field

The TPS62272DRVR is designed for high efficiency/light-load applications in portable/low-power consumer applications, such as smartphones and tablets. Its features allow for a compact solution that is optimized for easy implementation of power management circuitry. It can also be used in other portable devices, such as gaming hand-helds, PMP/MP3 audio players, and camcorders. It is highly suitable for battery-powered applications.

Output Voltage and Current

The TPS62272DRVR is designed to deliver output current up to 2A, with an efficiency of up to 95%. It has adjustable output voltage ranging from 0.8V to 5.5V. Its internal SW pin allows for the selection of 1mA, 5mA or 15mA standby currents.

Package, Thermal and Input/Output Characteristics

The TPS62272DRVR is available in a 3mm x 3mm, 8-Pin QFN and 12-Pin QFN package, which is optimized for easy implementation. It has a thermal resistance of 2.5°C/W (QFN) or 2.0°C/W (solderable QFN). Its input voltage range is 2.5V to 24V, and its operating temperature range is -40°C to +125°C. The device can deliver an output current of up to 2A and its output voltage is adjustable from 0.8V to 5.5V.

Clock and Debug System

The TPS62272DRVR includes a built-in clock and debug system. The built-in oscillator is adjustable, allowing designers to program the device’s switching frequency within a range of 600kHz to 1.6MHz. The device also incorporates a built-in system that allows designers to monitor device parameters, such as input voltage, output voltage, switching frequency, enable state, current limit and fault status. This system helps designers to debug their power supply designs quickly and easily.

Programmable Soft-Start and Over-Temperature Protection (OTP)

The TPS62272DRVR includes a programmable soft-start circuit that is adjustable over a wide range of time from 0µs to 1.3s. The device also incorporates a programmable over-temperature protection (OTP) circuit that will disable the device if the junction temperature of the device exceeds its pre-set temperature limit. When the device is disabled due to the OTP circuit, it can be re-enabled automatically by simply lowering the temperature of the chip.

Power-On Reset (POR)

The TPS62272DRVR also includes an internal high power-on reset (POR) circuit. This circuit monitors the system’s power supply and prevents the device from enabling the output voltage until a valid voltage has been detected. When the POR detects that the input voltage is valid, it will enable the output voltage of the device.

Working Principle

The TPS62272DRVR is a high efficiency DC-DC step-down converter that operates from 2.5V to 24V input and provides up to 2A (or 3A with or without external P-channel MOSFET) of continuous output current. The TPS62272DRVR is configured as a step-down converter capable of handling a wide input voltage range. It is optimized for high efficiency applications and provides improved light load efficiency with low dropout operation due to its current-mode controller design.

The TPS62272DRVR adopts an internal switching technology in which an external switch is controlled in an on/off manner. The power MOSFET switch is turned on and off at a frequency that is determined by the device’s internal oscillator. When the switch is on, the input voltage is applied to the flying capacitor, whose voltage is then regulated by the error amplifier. The output voltage is then regulated by the internal power MOSFET switch and the error amplifier.

In addition, the TPS62272DRVR includes an enable/disable pin that allows the user to completely disable the device when not in use. The device also includes a power-on reset (POR) circuit that monitors the system’s power supply and prevents the device from enabling the output voltage until a valid voltage has been detected. Finally, the device includes several features such as adjustable output voltage, a high power-on reset, internal soft-start, and programmable over-temperature protection (OTP).

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