Texas Instruments TPS543C20 Step-Down SWIFT™ Converters
Texas Instruments TPS543C20 Step-Down SWIFT™ Converter employs an internally compensated emulated peak current mode control with a clock synchronizable, fixed frequency modulator for EMI-sensitive POL. The internal integrator and directly amplifying ramp tracking loop eliminate the need for external compensation over a wide range of frequencies. This feature makes the system Design flexible, dense, and simple. Optional API and Body Braking help improve transient performance by significantly reducing undershoot and overshoot. Integrated NexFET™ MOSFETs with low-loss switching facilitate high efficiency and deliver up to 40A in a 5mm x 7mm PowerStack™ package with a layout-friendly thermal pad. Two Texas Instruments TPS543C20 devices can be stacked to provide up to 80A point-of-load.
Features
- Internally-compensated advanced current mode control 40A POL
- 4.0V to 16.0V input voltage range
- 0.6V to 5.5V output voltage range
- Integrated 3.0/0.9mΩ stacked NexFET™ power stage with lossless low-side current sensing
- Fixed frequency - synchronization to an external clock and/or sync out
- Pin strapping programmable switching frequency
- 300kHz to 2MHz for standalone
- 300kHz to 1Mhz for stackable
- Stack 2X for up to 80A with current share, voltage share, and CLK sync
- Pin strapping programmable reference from 0.6V to 1.1V with 0.5% accuracy
- Differential remote sensing
- Safe start-up into a pre-biased output
- High accuracy hiccup current limit
- Asynchronous Pulse Injection (API) and body braking
- 40-pin, 5mm×7mm LQFN package with 0.5mm pitch and single thermal pad
Applications
- Wireless and wired communications infrastructure equipment
- Enterprise servers, switches, and routers
- Enterprise storage, SSD
- ASIC, SoC, FPGA, DSP Core, and I/O rails
Videos
Simplified Schematic
Related Products
Texas Instruments TPS543C20A Step-Down SWIFT™ Converters
Uses an internally compensated emulated peak-current-mode control for EMI-sensitive POL.
Related Development Tools
Texas Instruments TPS543C20EVM-869 Buck Converter Evaluation Module
Designed to demonstrate the performance of the TPS543C20, a step-down SWIFT converter.
Texas Instruments TPS543C20EVM-054 Converter Evaluation Module
Allows users to evaluate the TPS543C20RVF, a synchronous buck converter with integrated MOSFETs.
Published: 2017-07-25
| Updated: 2022-06-07