TPS62351DRCR

Voltage - Output (Min/Fixed):	0.9V (1.1V, 1.5V)
Base Part Number:	TPS62351
Supplier Device Package:	10-VSON (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	3MHz
Current - Output:	800mA
Voltage - Output (Max):	1.69V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable (Programmable)
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS62351DRCR Application Field and Working Principle

TPS62351DRCR is an integrated low dropout (LDO) voltage regulator developed by Texas Instruments. The device is a member of the TPS62350 family of synchronous buck step-down regulator and is suitable for multiple applications in the fields of mobile computing, consumer and automotive. In addition to that, TPS62351DRCR is also a DC-DC switching regulator capable of delivering up to 4A of continuous current.

Overview of TPS62351DRCR

The TPS62351DRCR chip is designed for precision voltage regulation. Its dual-phase operation reduces output ripple and minimizes noise, allowing for a very stable output voltage. Its wide input range from 4.2V to 20V can support various power supply requirements in many applications. The voltage output range is from 0.6V to 4.0V, which can provide the precise voltage for high performance devices. The device’s high current capability is compatible with multiple FETs and can address a wide range of high current applications. The device also has several features that make it suitable for many applications. It has a programmable soft-start, which limits the inrush current on startup and provides power savings due to its low quiescent current in full operation. It also features a variable switching frequency that allows the user to choose the frequency of the output voltage to reduce noise and EMI. The over-voltage and over-temperature protection also provide protection to the device and keep it safe from potential damage due to power surges or thermal issues.

Applications of TPS62351DRCR

TPS62351DRCR is suitable for many applications. It can be used in notebook, netbook and tablet PCs, as well as in consumer devices such as smartphones, smart-TVs, media players and gaming consoles. It is also suitable for automotive applications, such as electric vehicle (EV) batteries and power management for other automotive devices.

Working Principle of TPS62351DRCR

The TPS62351DRCR operates as a synchronous DC-DC switching regulator, which takes a high voltage DC input and converts it to a predetermined lower voltage DC output. This is done by a series of switching operations, each one being electronically controlled. In each switching cycle, the input voltage is first stepped down by a switching device, such as a MOSFET. It then passes through an inductor, followed by a Schottky diode. From there, it is further stepped down by the output stages, which is controlled by feed-back loop. The feedback loop monitors the output voltage, and adjusts the duty cycle of the switching pulses to maintain a stable output voltage. To limit the output current, a current sensing element is also included. This current sensing is usually done by an external sense resistor, which senses the output current and provides an appropriate signal to the device. This signal is then used to limit the output current and protect the device from potential damage. Overall, the working principle of TPS62351DRCR is based on switching technology and current sensing. The device is capable of providing high-precision voltage regulation with minimal noise and maximum efficiency, making it suitable for many applications.

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