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4-19Vin 25A Stackable Synchronous Step-down SWIFT™ Converter w/ Adaptive Internal Compensation

Availability: 7,320


Package | PIN: LQFN-CLIP (RVF) | 40
Temp: Q (-40 to 125)
Package qty | Carrier: 2,500 | LARGE T&R
Custom reel may be available
Qty Price
1-99 $5.91
100-249 $5.30
250-999 $3.79
1,000+ $3.21


  • 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 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 forStackable
  • Stack 2× for up to 50 A With Current Share, Voltage Share, and CLK Sync
  • Pin Strapping Programmable Reference from 0.6 V 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 TPS543B20 With the WEBENCH® Power Designer

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Texas Instruments  TPS543B20RVFR

The 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.