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TPS63020 4A Buck-Boost Converter Overview
[MUSIC PLAYING] Hello, everybody. My name is Carmen Gonzalez. I am in product marketing for DC/DC converters and Texas Instruments. And I would like to introduce our new buck-boost DC/DC converter TPS63020. The 4-AMP switch buck-boost converter that helps you address ever-changing new design challenges. As you all know, the power management landscape is in constant change. Systems complexity keeps increasing and so do the power management requirements. Portable applications no longer have a straightforward power architectures, which can supply the cord from the battery in a centralized fashion. New features, like flex drivers, built-in projectors, communication processors, such as GSM modems, and application-specific processors require a large number of high power rails. A new challenge that arises from these new features is a higher peak to average power demand that some of them drive. One example is a GSM modem, which goes into two pulses when transmitting, and is just at microamp level when no transmission occurs. All these changes happen within applications, where space is of great concern. And extra features must not drive bigger end application size. One of the key features of the TPS63020 is dynamic input current limit, which helps protect both the device and the application. With the TPS63020, the average inductor current is limited internally on the IC. At nominal operating conditions, the current limit is constant. If the input power source becomes weak, such as when batteries are almost discharged and increased output impedance, or an additional heavy pulse load is connected to the battery, the supply voltage at VIN might drop below 2.3 volts. If this occurs, the six TPS63020 reduces the current limit. The dynamic current limit has its lowest value when reaching the minimum recommended supply voltage at VIN. If the die temperature increases above the recommended maximum temperature, the dynamic current limit kicks in and reduces the input current to keep the IC temperature, as well as the operating temperature of the application, at a safe level. The TPS63020 has a high output current capability, which allows a battery-powered device to generate the most current with the greatest amount of efficiency. For example, 3 AMP at 3.3 volt in stepped-down mode and more than 2 amp at 3.3 volt in boost mode are typical operating conditions. The TPS63020 has an excellent power safe mode preferments, maintaining high efficiency at light load current range. The wide input voltage range supports any one cell lithium ion or lithium polymer battery, or a two or three cell alkaline, nickel cadmium, or nickel metal hydride battery, and also new battery chemistry, such as lithium ion phosphate. The TPS63020 DC/DC converter comes in a three by four by one QFM package, that minimizes the IC footprint. The device switches at a relatively high frequency of 2.4 megahertz, allowing smaller external components, specifically the inductor, can be reduced to 1.5 micro hertz. This enables a total solution size of less than 100 millimeters squared. For more information, please visit ti.com/tps63020. [MUSIC PLAYING]
Description
April 6, 2018
An overview of the TPS63020 4A buck-boost converter
Additional information
Download the TPS63020 datasheet
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