Transcription of Efficiency of synchronous versus nonsynchronous buck ...
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Efficiency of synchronous versus nonsynchronous buck ...
Texas Instruments Incorporated Power Management Efficiency of synchronous versus nonsynchronous buck converters By Rich Nowakowski, Power Management Product Marketing and Ning Tang, Systems Engineer, SWIFT DC/DC Converters Choosing the right DC/DC converter for an application can Figure 1. synchronous and nonsynchronous be a daunting challenge. Not only are there many available buck circuits on the market, the designer has a myriad of trade-offs to consider. Typical power-supply issues are size, Efficiency , cost, temperature, accuracy, and transient response. The VIN. need to meet ENERGY STAR specifications or green- mode criteria has made energy Efficiency a growing Q1. concern. Designers want to improve Efficiency without Control Switch Node increasing cost, especially in a high-volume consumer L1.
A synchronous converter with an integrated low-side MOSFET offers benefits such as reduced size, lower parts count, and easier design. However, if reducing cost is the ... 1. “4.5-V to 18-V, 3-A Output Synchronous Step Down Switcher with Integrated FET (SWIFT™),” TPS54325 Data Sheet.....slvs932a 2. “3A, 28V Input, Step Down SWIFT™ DC/DC
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