TPS5625PWPG4

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Applications:	Controller, DSP
Voltage - Input:	11.4 V ~ 13 V
Number of Outputs:	1
Voltage - Output:	2.5V
Operating Temperature:	0°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package:	28-HTSSOP
Base Part Number:	TPS5625

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TPS5625PWPG4 Application Field and Working Principle

In the field of integrated power management, Power Management Integrated Circuits (PMICs) are increasingly being used in the automotive, consumer, industrial, communications, and computing market sectors. The Texas Instruments TPS5625PWPG4 Enhanced Series PMIC Voltage Regulator is a high-efficiency, low-noise 5A synchronous-buck DC-DC regulator. It is a special purpose PMIC featuring a wide input voltage range and includes a unique set of features for control, diagnostics, and protection to facilitate efficient system operation. This article will explore the application areas of the TPS5625PWPG4 and its working principles.

Applications

The TPS5625PWPG4 can be used in a variety of automotive and industrial applications. In automotive use, the TPS5625PWPG4 can be used in power distribution networks and electric power steering systems, as well as in power delivery applications such as fuel pumps and electric brakes. In the industrial sector, the TPS5625PWPG4 is well-suited to the harsh reliability requirements of RF and power communication devices, as well as for electric motors and industrial exhaust systems.As a voltage regulator, the TPS5625PWPG4\'s wide input voltage range enables improved efficiency for higher input voltages. The wide input can cover both automotive and industrial applications. With a 4V to 42V input range, the TPS5625PWPG4 can also be used in some medical applications.

Working Principle

The TPS5625PWPG4 is a synchronous buck regulator. Operationally, it will draw current from an input voltage source, store it momentarily in an inductor, and transform it to the desired output voltage. This is then output to the load. This process is regulated and occurs with extremely precise timing to ensure precise voltage output.The components that individually operate within the power regulation core are the following:

• Pass transistor – The pass transistor forms part of the controlled switching action. It switches as quickly as possible to ensure precise control of the power delivered to the inductor for fast responses to changes in the load.
• PWM control circuit –The Pulse Width Modulation (PWM) control is responsible for regulating the output voltage by quickly regulating the current flow in the pass transistor.
• Switching frequency –The switching frequency of the TPS5625PWPG4 is determined by a combination of an internal oscillator and an internal multiplier. The differential output voltage is sensed by the PWM control circuit, producing a pulses width proportional to the load.
• Voltage reference voltage – The voltage reference voltage is used to define the desired output voltage.
• Internal compensation – Internal compensation network inside the TPS5625PWPG4 ensures stable output voltage at all transitions.

The TPS5625PWPG4 features an internal logic level converter that provides a logical interface and open-drain Fault (FLT) outputs to indicate when the preset protection parameters have been violated. This allows for a fault to be detected and handled by simple firmware.The TPS5625PWPG4 also has the full range of protection features required for reliable operation in automotive and industrial applications, such as temperature protection, surge protection and other fault detection capabilities, as well as under-voltage lockout and over-voltage protection. Additionally, the TPS5625PWPG4 also offers Enable, Soft-Start and Frequency Mode settings.

Conclusion

The Texas Instruments TPS5625PWPG4 Enhanced Series PMIC Voltage Regulator is a feature-rich, efficient and high-performance 5A synchronous-buck DC-DC regulator with ample, wide input voltage range, perfect for automotive and industrial applications. Its unique set of features for control, diagnostics and protection facilitate reliable, efficient operation. The TPS5625PWPG4 enables improved system efficiency and a small solution size and also features an internal logic level converter, temperature protection, surge protection and other fault detection capabilities.

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