Calculation tool
TPS543C20A
4-V to 16-V, 40-A synchronous SWIFT™ buck converter with adaptive internal compensation
Data sheet
TPS543C20A
- Internally-Compensated Advanced Current Mode Control 40-A POL
- Input Voltage Range: 4 V to 16 V
- Output Voltage Range: 0.6 V to 5.5 V
- Integrated 3.4/0.9-mΩ 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
- 300 kHz to 2 MHz for Standalone
- 300 kHz to 1 MHz for Stackable
- Stack 2× for up to 80 A With Current Share, Voltage Share, and CLK Sync
- Pin Strapping Programmable Reference from 0.6V to 1.1 V With 0.5% Accuracy
- Differential Remote Sensing
- Safe Start-Up into Prebiased Output
- High-Accuracy Hiccup Current Limit
- Asynchronous Pulse Injection (API) and Body Braking
- 40-pin, 5-mm × 7-mm LQFN Package with 0.5-mm Pitch and Single Thermal Pad
- Create a Custom Design Using the TPS543C20A With the WEBENCH® Power Designer
The TPS543C20A uses 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 thereby making the system design flexible, dense, and simple. Optional API and body braking help improve transient performance by significantly reducing undershoot and overshoot, respectively. Integrated NexFET™ MOSFETs with low-loss switching facilitate high efficiency and deliver up to 40 A in a 5-mm × 7-mm PowerStack™ package with a layout friendly thermal pad. Two TPS543C20A devices can be stacked together to provide up to 80-A point-of-load.
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Technical documentation
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Evaluation board
TPS543C20AEVM-054 — 40-A fixed frequency non-compensation stackable synchronous buck converters evaluation module
The TPS543C20AEVM-054 evaluation module provides a fixed 0.9-V output at up to 40 A from a nominal 12-V input bus. The design acheives 90% peak efficiency.
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs
PMP21386 — Dual Phase Stackable Buck Converter Reference Design with Full Test Capability
This reference design uses TPS543C20 in a stacked configuration to provide 0.85V @ 40A in a compact (21mm x 35mm) form factor with low temperature rise with no airflow. Board includes on board high speed dynamic load tester, output ripple probe interface, and test point for stability analyzer, (...)
| Package | Pins | Download |
|---|---|---|
| LQFN-CLIP (RVF) | 40 | View options |
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