Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	10V
Voltage - Output (Min/Fixed):	1.8V
Voltage - Output (Max):	--
Voltage Dropout (Max):	--
Current - Output:	500mA
Current - Quiescent (Iq):	125µA
PSRR:	60dB (100Hz)
Control Features:	Enable, Reset
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-HTSSOP
Base Part Number:	TPS77518

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TPS77518PWPR Application Field and Working Principle

Introduction

The TPS77518PWPR is a high performance, power management integrated circuit from Texas Instruments developed to facilitate the efficient power supply design in multiphase cores and integrated graphics. This product family offers point-of-load (POL) converters with up to 8 phases, 250 kHz PWM, independent phase control and spread spectrum frequency modulation (SSFM).

Application Fields

The TPS77518PWPR is designed for use in applications such as CPU voltage regulation systems and FPGA as well as ASIC designs, power distribution and point-of-load (POL) regulation. The product family is ideal for powering the latest high current, multiphase microprocessors, graphics processors, FPGAs, and ASICs because of its discrete multiphase control, PWM scheme and wide input voltage range. It also offers efficient thermal management and integrated fault detection along with 0.6V reference to simplify the design process.

Working Principle

The TPS77518PWPR is a linear voltage regulator that works by converting a higher input voltage to a lower output voltage. Its input voltage range is up to 20V and its output voltage can be adjusted from 0.7V to 5V. The user adjustable output voltage is accomplished by changing the ratio of external sense resistors. The device provides pulse width modulation (PWM) control for setting the output voltage to a desired level. The TPS77518PWPR also has a built-in MOSFET for load switching and allows for the implementation of load line control. The Load Line Control (LLC) feature allows for better load transient performance and dynamic voltage scaling in order to reduce peak on-state current. The PWM control scheme of the device also prevents overshoots and under-drain of the output voltage. Moreover, the TPS77518PWPR offers three power saving modes, linear mode, burst mode and fast start transient mode, which enables faster system startups, a wide input range, thermal shutdown and remote startup capability.

Conclusion

The TPS77518PWPR offers a wide range of features and benefits to the design process of power supplies and power management systems. It is ideal for powering high current, multiphase microprocessors, graphics processors, FPGAs, and ASICs due to its discrete multiphase control, pulse width modulation (PWM) scheme and wide input voltage range. The device also provides an adjustable output voltage with a linear regulation and a MOSFET for load switching. Additionally, the TPS77518PWPR offers power saving modes, thermal shutdown and remote startup capability, and Load Line Control (LLC) feature to better load transient performance and dynamic voltage scaling.

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