TPS543C20RVFR

The TPS543C20 employs an internally compensated emulated peak current mode control scheme with a clock-synchronizable fixed-frequency modulator for EMI-sensitive POL applications. An internal integrator and direct-amplification ramp-tracking loop eliminate the need for external compensation over a wide frequency range, enabling flexible, dense, and simplified system designs. Optional API and body braking features help improve transient performance by significantly reducing undershoot and overshoot, respectively. Integrated NexFET™ MOSFETs with low-loss switching characteristics help improve efficiency and support output currents up to 40A (in a 5mm×7mm PowerStack™ package with a layout-friendly thermal pad). Two TPS543C20 devices can be stacked to deliver up to 80A at the point of load.

Applications

• Wireless and wired communications infrastructure equipment
• Enterprise servers, switches, and routers
• Enterprise storage, SSD
• ASIC, SoC, FPGA, DSP core and I/O power rails

Key features

• Internally compensated advanced current mode control 40A POL
• Input voltage range: 4V to 14V
• Output voltage range: 0.6V to 5.5V
• Integrated 3/0.9mΩ stacked NexFET™ power stage with lossless low-side current sensing
• Fixed frequency — synchronizable to external clock and/or sync output
• Pin-strap programmable switching frequency: 300kHz to 2MHz in standalone mode, 300kHz to 1MHz in stacked mode
• Up to 80A load via dual stacking with current sharing, voltage sharing, and CLK synchronization
• Pin-strap programmable reference voltage: 0.6V to 1.1V with 0.5% accuracy
• Differential remote sensing
• Safe start-up into pre-biased output voltage
• High-accuracy hiccup current limiting
• Asynchronous pulse injection (API) and body braking
• 40-pin 5mm×7mm LQFN package with 0.5mm pitch and single thermal pad
• Create custom designs using TPS543C20 with WEBENCH® Power Designer