TPS54229EDDAR Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	0.76V
Base Part Number:	TPS54229E
Supplier Device Package:	8-SO PowerPad
Package / Case:	8-PowerSOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	650kHz
Current - Output:	2A
Voltage - Output (Max):	7V
Series:	D-CAP2™, Eco-Mode™
Voltage - Input (Max):	18V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The TPS54229EDDAR is a step-down DC/DC converter designed to provide precise output voltage regulation. It operates in variable and fixed switching frequency up to 2.2 MHz, featuring low on-resistance internal power FETs and a low minimum on-time of 250 ns. The converter boasts high efficiency, low noise, and excellent line and load transient response, making it suitable for many demanding applications including industrial, smartphone and tablet, telecom, and automotive.

Applications

TPS54229EDDAR can be used as a direct replacement for standard buck converters in a wide range of applications including industrial, telecom, automotive, and consumer electronic products. It can be used to provide regulated system supply voltage from input from restricted source, such as 12V battery, and delivering up to 1.5A of output current with minimal ripple and noise.It can also be used in multiple synchronous buck applications, allowing up to 5 parallel converters. It is also suitable for low power battery charging applications, where its high efficiency allows it to maintain excellent battery life, while also saving power. It is also suitable for use in wearable and medical device applications, where its high efficiency can reduce battery drain.

Working Principle

The TPS54229EDDAR is a synchronous step-down DC/DC converter, featuring a current-mode pulsewidth modulation (PWM) control loop. The output voltage is easily programmed by an external resistor divider, or by connecting an external voltage reference.The device features a low on-resistance, low-side and high-side power FETs, which allows high efficiency operation over a wide input voltage range. The wide input voltage range makes it suitable for use in battery-powered systems, and its low output voltage drop allows it to maintain high conversion efficiency at light load.The converter has a minimum on-time of 250 ns, which can be adjusted to reduce switching losses at light load conditions. In addition, the PWM controller can operate in either fixed or variable frequency mode, allowing for improved response time and ripple noise performance when necessary.

Conclusion

The TPS54229EDDAR is a high-efficiency buck converter designed to provide precise output voltage regulation in a wide range of applications. It features a wide input voltage range, low on-resistance power FETs, and low minimum on-time. It can be used in a wide range of applications, including industrial, telecom, automotive, and consumer electronic products. It can also be used for multiple synchronous buck applications, low power battery charging, and wearable and medical devices. Furthermore, it is capable of operating at a low switching frequency and can be adjusted to maintain excellent efficiency under light load conditions.

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