TPS56428DDAR Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	0.6V
Base Part Number:	TPS56428
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:	4A
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 TPS56428DDAR is a dual-channel, high-efficiency DC/DC converter which uses the latest process technology to offer high performance and flexibility, enabling it to address a wide range of application fields from consumer to industrial and automotive. By easily configuring its integrated flexible power stage, the TPS56428DDAR provides an efficient, reliable and cost-effective solution for different voltage conversion requirements. In this article we will discuss the application field and working principle of the TPS56428DDAR Device.

Applications
The TPS56428DDAR is a highly flexible, dual-channel DC/DC converter, optimized for use in consumer, industrial and automotive applications. The device supports input voltage up to 40V and the output voltage can be programmed up to 22V, enabling applications such as fast battery charging, communications, and consumer electronics. The device is specifically designed to meet the efficiency requirements of consumer and automotive applications and it features a wide range of external components and integrated features in a tiny package, enabling a high performance and fast transient response. The device also offers extended temperature operation, making it an ideal choice for both hot and cold conditions.In addition to the wide range of applications enabled by the TPS56428DDAR, the device also boasts a number of integrated features and benefits such as adjustable input/output voltage, internal soft-start, effective power limiting, thermal protection, clockless mode, and adjustable switching frequency. This makes the device suitable for a variety of applications, from low-voltage automotive applications to high-voltage consumer applications.

Working Principle
The TPS56428DDAR is a dual-channel integrated DC/DC converter. The device is designed to provide high efficiency and fast transient response by using the latest process technology and integrated components, such as an adjustable voltage feedback and an internal soft-start.The device can operate in either in buck or boost mode and features adjustable output voltage from 0.7V to 22V, easily configurable via the integrated flexible power stage. The buck converter section consists of a volt Sense, which calculates the error voltage between output and input, the Internal regulator, fixed frequency synchronous PWM, and a power stage, which drives an external N-channel MOSFET.The boost converter is enabled by the integrated step-up synchronous PWM, and its output voltage can be adjusted through the integrated voltage feedback. The device also includes a clockless mode option, which can be enabled by setting the PU pin to logic high, allowing the system designer to reduce the current consumption in light-load conditions.The device also features integrated power limiting (Hiccup) for both channels, and thermal protection for those sensitive to high temperatures. By carefully selecting external components, such as the external sense resistor, the design can optimize their performance and maximize total efficiency.

Conclusion
The TPS56428DDAR is a highly flexible, dual-channel DC/DC converter, optimized for use in consumer, industrial and automotive applications. The device supports input voltage up to 40V and the output voltage can be programmed up to 22V. It is specifically designed to meet the efficiency requirements of consumer and automotive applications and offers a wide range of external components and integrated features in a tiny package. Additionally, the device is equipped with adjustable input/output voltage, internal soft-start, effective power limiting, thermal protection, clockless mode, and adjustable switching frequency, making it a reliable and cost-efficient solution for different voltage conversion requirements.

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