TPS51020DBTG4

Series:	--
Packaging:	Tube
Part Status:	Active
Applications:	Controller, DDR
Voltage - Input:	4.5 V ~ 28 V
Number of Outputs:	2
Voltage - Output:	0.9 V ~ 24 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	30-TFSOP (0.173", 4.40mm Width)
Supplier Device Package:	30-TSSOP
Base Part Number:	TPS51020

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Introduction
TPS51020DBTG4 is a High Voltage Linear Regulation Controller specially designed to meet the requirements of various applications. It combines both linear and switching regulations with a wide input voltage range, as well as a high output accuracy. It also provides adjustable output voltage, current-mode control, self- protection, and other features to provide reliable operation. This paper will discuss the application fields of TPS51020DBTG4 and its working principle.Application Field
TPS51020DBTG4 is used for applications that require a high voltage output, such as monitor power supplies, LCD panel backlights, and powering digital circuits. It is also suitable for a variety of other applications that require accurate power supplies such as power amplifiers, laser diodes, ultrasound systems, and medical devices. Its ability to operate from a wide input voltage range (9V to 75V) and deliver extremely precise output (±1.5%) make it ideal for these applications.Working Principle
TPS51020DBTG4 utilizes a two-stage architecture, combining both linear and switching regulators, to regulate output voltage. In the first stage, TPS51020DBTG4 uses a pulse-width-modulated (PWM) DC/DC switching regulator to generate a regulated pulsed output voltage. This voltage is then regulated to the desired output voltage by a low noise, high precision linear regulator. The linear regulator adjusts the output voltage based on the input voltage and an external resistor divider, allowing users to set the output voltage.Protection Features
TPS51020DBTG4 features several built-in protection features, such as over-temperature, over-current, and over-voltage protections. These protections help prevent potential damages caused by excessive operating conditions. In addition, the device includes an adjustable current-mode control for consistent output current holdup during load transient scenarios.Conclusion
TPS51020DBTG4 is a high voltage linear regulation controller specially designed to meet demanding requirements of various applications. It features a wide input voltage range, adjustable output voltage, current-mode control, and other protection features to ensure reliable operation. Its two-stage architecture combining switching and linear regulation provides excellent output accuracy and enables it to be used in a variety of applications including monitor power supplies, LCD panel backlights, power amplifiers, laser diodes, and medical devices.

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