Texas Instruments

TPS543B20 Synchronous Step-Down SWIFT™ Converter

Texas Instruments' TPS543B20 4 VIN to 19 VIN, 25 A stackable synchronous step-down SWIFT converter with adaptive internal compensation

Image of Texas Instruments' TPS543B20 Synchronous Step-down SWIFT™ ConverterTexas Instruments' TPS543B20 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 thereby making the system design flexible, dense, and simple. Optional asynchronous pulse injection (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 25 A in a 5 mm x 7 mm PowerStack™ package with a layout friendly thermal pad.

Features
  • 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 from 300 kHz to 2 MHz
  • Pin strapping programmable reference from 0.6 V to 1.1 V with 0.5% accuracy
  • Differential remote sensing
  • Safe start-up into pre-biased output
  • High-accuracy hiccup current limit
  • API and body braking
  • 40-pin, 5 mm x 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
Applications
  • Wireless and wired communications infrastructure equipment
  • Enterprise servers, switches, and routers
  • Enterprise storage, SSD
  • ASIC, SoC, FPGA, DSP core and I/O rails

TPS543B20 Synchronous Step-Down SWIFT Converter

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC REG BUCK ADJ 25A 40LQFNTPS543B20RVFTIC REG BUCK ADJ 25A 40LQFN383 - Immediate$81.91View Details
IC REG BUCK ADJ 25A 40LQFNTPS543B20RVFRIC REG BUCK ADJ 25A 40LQFN215 - Immediate$69.48View Details

Evaluation Module

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
EVAL BOARD FOR TPS543B20TPS543B20EVM-799EVAL BOARD FOR TPS543B200 - Immediate$443.70View Details
Published: 2017-10-24

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