TPS63050YFFR

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The Texas Instruments TPS63050YFFR is a 12V-input, DC-DC synchronous buck converter. It combines a wide range of operating frequencies, an integrated low-side MOSFET, and various package options to optimize design flexibility. With a complete feature set, the TPS63050YFFR is optimized for a wide range of automotive, industrial and personal electronics applications.

Applications

• Automotive applications, including vehicle networking, infotainment, body electronics, powertrain and safety systems
• Industrial applications, including medical, measurement, control and automation applications
• Point-of-load power supplies for computers, servers, printers and gaming systems
• Portable electronic devices, such as tablets, phones and monitors.

Features

• Wide input voltage range: 4.5V to 32V
• Integrated low-side MOSFET with minimum RDS (ON) of 75mΩ
• Adjustable switching frequencies of up to 750kHz
• Programmable current limit
• Programmable soft start
• Selectable pre-bias output voltage
• Thermal and over-current protection
• Low quiescent current of 8μA
• High efficiency for better thermal design

Working Principle

The TPS63050YFFR is a synchronous, DC-DC buck converter that uses a current mode architecture. It works by controlling the current from a switch, usually made from a power MOSFET, while operating in continuous conduction mode (CCM). The switch is controlled by an internal bias circuit and an error amplifier that compares the output voltage feedback to an internal reference. The output voltage is set by a resistive divider and the input voltage must be higher than its regulation voltage.

When the switch turns on, current flows from the input supply, through the switch, and into the inductor. The current charge stored in the inductor increases, raising its magnetic field and supplying current to the output capacitors. When the switch turns off, however, the current stored in the inductor is released and is sent to the load. If the load suddenly draws more current, the switch will be turned on for longer than the regulation time and the output voltage will drop. This feature is called “peak-current-mode control”, and it helps to maintain a constant output voltage.

The TPS63050YFFR has a few useful features, such as a pre-bias output voltage, which allows you to start the converter with an output voltage that\'s lower than the regulation voltage. It also has a programmable soft start and a programmable current limit for increased protection and flexibility. Finally, it has a thermal and over-current protection circuit, ensuring that the device won\'t be damaged by overheating or excessive current.

The TPS63050YFFR is a versatile device and is ideal for automotive, industrial and personal electronics applications. Its wide input voltage range, adjustable switching frequencies, and integrated MOSFET make it an excellent choice for efficiently converting an input voltage to an output voltage.

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