TPS62802YKAR

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The Texas Instruments TPS62802YKAR (TPS62802) is a current mode DC-to-DC buck converter and a member of the TPS6280x family of buck regulators. Developed by Texas Instruments, the TPS62802YKAR can be used as a simple, easy-to-design, and yet very efficient step down converter ideal for applications operating with limited energy sources. This versatile regulator is capable of operating over a wide input voltage range. Its fast transient response and accurate enable/disable control make the TPS62802 a very attractive voltage regulator solution for various mobile and industrial systems.

TPS62802YKAR Application Field and Working Principle

The TPS62802YKAR is a DC-DC buck regulator with many features that make it suitable for use in a range of applications. Its wide input voltage range from 2.7 V to 5.5 V makes it suitable for use in many different power sources. Output voltage is adjustable from 0.8 V to 5.4 V allowing for a range of voltage levels for powering different applications. The device also features adjustable switching frequency ranging from 125 kHz to 2 MHz for further optimization. Other features include built-in soft start, enable/disable capability, thermal protection, and current limit.

The working principle of the TPS62802YKAR is quite simple. The TPS62802YKAR uses a voltage sensing internal feedback loop to keep the output voltage level constant. The device uses an external MOSFET connected at the VIN and VOUT pins to control the load current. A low side MOSFET is automatically turned on when the load current is higher than the set limit and is turned off when it is lower than the threshold. This enables efficient operation as the MOSFET is only ever driven for short periods of time.

In addition to the typical buck converter circuit, the TPS62802YKAR regulates current using the internal buck switch. This control loop is what ensures a stable output voltage. When the output voltage level starts to drop, the PWM signal that drives the internal MOSFET is increased, driving greater current into the load while ensuring an optimal power supply to the system.

The TPS62802YKAR also has a secondary enable/disable control which adds additional flexibility. This control can be used as an enable signal or a disable signal with the enable signal being an active high signal. When the enable signal is low, the device is disabled and no load current flows through the MOSFET. This makes it possible for the design engineer to create multiple control applications within the same system by toggling the enable/disable signal.

The TPS62802YKAR offers a great range of features and advantages making it a great choice for many different power supply applications. Its wide input voltage range, high switching frequency, low dropout voltage, high efficiency, accurate enable/disable control and low quiescent current make it suitable for a wide range of system types.

The TPS62802YKAR is a versatile, current mode DC-DC buck regulator capable of operating across a wide range of input and output voltages. Its fast transient response, low quiescent current, and accurate enable/disable control make this device ideal for powering many mobile systems and industrial applications. This makes the TPS62802YKAR an ideal solution for all kinds of power supply projects.

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