TPS40200D

Frequency - Switching:	35kHz ~ 500kHz
Base Part Number:	TPS40200
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	95%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 52 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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TPS40200D Application Field and Working Principle

Introduction

The TPS40200D voltage regulator is a high precision, low-side synchronous rectifier (MOSFET) driven dc-dc switch controller from TI. It operates from an input voltage from 3.3V up to 28V, allowing for a wide range of applications in both the medium and high-power arena; including automotive, industrial, and medical equipment. The controller has high level of integration, including multiple current-sense inputs, thermal management, and analog and digital diagnostics to ensure optimal device performance and protection. The TPS40200D is a highly efficient and flexible solution that enables users to quickly design their own switchmode power supplies (SMPS) with minimal external components.

PMIC - Voltage Regulators - DC DC Switching Controllers

PMIC (Power Management IC) are used in a variety of electronic devices to ensure efficient power distribution and management. They come in a range of different types, such as voltage regulators and dc-dc switching controllers. The TPS40200D is a specific example of a dc-dc switching controller, which is used to efficiently regulate the output voltage of a power supply.

Working Principle

The TPS40200D works by sensing the voltage applied to its input, and using this information to determine how much power to deliver to the load. The controller is capable of being used in buck, boost, buck-boost, and SEPIC (Single Ended Primary-Inductor Converter) topologies, with a minimum input voltage of 3.3V and a maximum output voltage of 24V. The controller features an integrated low-side MOSFET drive circuit which provides peak current of 150mA and is rated for up to 30V. The MOSFET is capable of quickly adjusting the output voltage, making it suitable for low-noise, high switching frequency applications, such as those encountered in motor control applications. The controller also features a dual current-sense input, allowing for fast response times to input current variations and improved power efficiency. In addition to its capabilities as a switchmode power supply controller, it also features a range of integrated diagnostics and protection features. These include an overcurrent detection system, an over-temperature monitoring and protection system, and a cycle-by-cycle current limiting system.

Conclusion

The TPS40200D is a highly integrated, flexible, and efficient dc-dc switchmode power supply controller from TI. It is capable of providing accurate and reliable power delivery in a wide range of applications, from automotive to medical. The controller features a highly integrated MOSFET drive circuit, a dual current-sense input, and a range of integrated protection and diagnostic features for optimal performance. As such, it is an ideal solution for applications where reliable and efficient power regulation is required.

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