Feature
- Internally-Compensated Advanced Current Mode Control 25-A POL
- Input Voltage Range: 4 V to 19 V
- Output Voltage Range: 0.6 V to 5.5 V
- Integrated 4.1/1.9-mΩ StackedNexFET? Power Stage With Lossless Low-Side CurrentSensing
- 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 forStackable
- Stack 2× for up to 50 A With Current Share, Voltage Share, andCLK Sync
- Pin Strapping Programmable Reference from 0.6 V to 1.1 V With 0.5%Accuracy
- Differential Remote Sensing
- Safe Start-Up intoPrebiased Output
- High-Accuracy Hiccup Current Limit
- Asynchronous Pulse Injection (API) and Body Braking
- 40-pin, 5-mm × 7-mm LQFNPackage with 0.5-mm Pitch and Single Thermal Pad
- Create a Custom Design Using the TPS543B20With theWEBENCH? Power Designer
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DescriptionThe TPS543B20 employs an internally compensated emulatedpeak-current-mode control, with a clock synchronizable, fixed-frequency modulator for EMI-sensitivePOL. The internal integrator and directly amplifying ramp tracking loop eliminate the need forexternal 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 bysignificantly reducing undershoot and overshoot, respectively. Integrated NexFET? MOSFETs with low-loss switching facilitate high efficiency anddeliver up to 25 A in a 5-mm × 7-mmPowerStack? package with a layout friendly thermal pad. TwoTPS543B20 devices can be stacked together to provide up to50-A point-of-load.
