TPS54561DPRR

Voltage - Input (Max):	60V
Supplier Device Package:	10-WSON (4x4)
Package / Case:	10-WDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	100kHz ~ 2.5MHz
Current - Output:	5A
Voltage - Output (Max):	59V
Voltage - Output (Min/Fixed):	0.8V
Series:	Eco-Mode™
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Split Rail
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction:TPS54561DPRR is a high performance integrated dc-dc step-down converter with 3-A output capability and excellent transient response. It has many enhanced features, such as a voltage-mode control loop, internal compensation and peak-current-limit protection (CTRL_MODE pin control). The built-in external component-reducing design inputs the clock frequency, default current limit value and soft start time, which makes the TPS54561DPRR easy to design and applicable to many different applications. This article will focus on the application field and working principle of TPS54561DPRR.Application Field: The TPS54561DPRR has a wide application field and can be used for the power supply of digital power equipment, such as mobile phones, tablets, TVs and other consumer electronics. It can be used for providing power for microprocessors with high current and low ripple, as well as for powering DDR-Lite applications. The TPS54561DPRR operates from an input voltage range of 3.3V to 36V. The adjustable output is regulated to a programmed voltage as low as 0.2V. A constant switching frequency of 200 kHz enables a compact design and low noise operation. With its include thermal protection, current limit and over-voltage protection, it provides good protection and reliability for the application.Working Principle:The working principle of the TPS54561DPRR is based on an all-digital voltage-mode control loop. The input voltage is regulated by the voltage-mode control loop that includes a voltage reference block, an error amplifier and a digital PWM comparator. The digital PWM determines the duty cycle of the voltage across the output inductor, and the power switch is used to control the output voltage. When the output voltage is too low, the error amplifier reduces the duty cycle until it is correct. The power switch also has a built-in ramp generator and other features to protect against short-term over-current and voltage-related problems. The output voltage of the TPS54561DPRR is adjusted by a resistive divider connected to the PGOOD_FLT pin. The internal resistive divider adjusts the voltage output according to the programmed reference voltage.Conclusion:The TPS54561DPRR is an integrated DC-DC step-down converter with 3-A output capability and excellent transient response. It has a wide application field and can be used to power mobile phones, tablets and other consumer electronics. The TPS54561DPRR has a voltage-mode control loop, internal compensation and a peak-current-limit protection system, which makes it easy to design and applicable to many different applications. The output voltage of the TPS54561DPRR is adjusted by a resistive divider connected to the PGOOD_FLT pin. With its include thermal protection, current limit and over-voltage protection, it provides good protection and reliability for the application.

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