DC converter touts compensated control

-October 08, 2017

TI’s TPS543C20 buck converter has an internally compensated ACM (advanced current-mode) control topology supporting frequency synchronization. Integrated high-side and low-side MOSFETs deliver up to 40 A in a thermally efficient 5×7-mm PowerStack package. Designers can stack two converters side by side to drive loads up to 80 A for processors in space-constrained and power-dense applications, including wired and wireless communications, enterprise and cloud computing, and data storage systems.

ACM is an emulated peak-current-mode control topology that internally generates a ramp with the ability to dynamically adjust for stability over a wide range of operating switching frequencies. This provides the best of both conventional fixed frequency for low-noise operation and constant on-time control for fast transient response without external compensation. ACM control maintains stability over an input voltage range of 4 V to 16 V and an output voltage range of 0.6 V to 5.5 V.

The TPS543C20 provides greater than 90% efficiency at a peak load current of 40 A. It also offers full differential remote-voltage sensing to meet the voltage accuracy requirements of deep submicron processors and maintains 0.5% reference voltage accuracy over temperature.

Housed in a 40-pin, 5×7×1.5-mm PowerStack QFN package, the TPS543C20 costs $5.24 each in lots of 1000 units on small reels.

TPS543C20 product page

Texas Instruments, www.ti.com

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