4.5-V to 17-V, 8-A synchronous SWIFT™ buck converter with D-CAP3 control and Out-of-Audio™ mode


Product details


Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 8 Iq (Typ) (uA) 600 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 1200 Features Adjustable Current Limit, Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Forced PWM, Soft Start Adjustable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-HR (RNN) 18 12 mm² 3.5 x 3.50.9 open-in-new Find other Buck converters (integrated switch)


  • Integrated 19-mΩ and 9.4-mΩ MOSFETs
  • Selectable FSW of 400 kHz, 800 kHz or 1.2 MHz
  • Out-of-Audio Feature to Keep Switching Frequency Out of Audio Frequency Range
  • Adjustable Current Limit Settings with Hiccup Re-start
  • 0.6 V ±1% Reference Voltage Across Full Temperature Range
  • Optional External 5-V Bias Support for Enhanced Efficiency
  • D-CAP3™ Control Mode for Fast Transient Response
  • 0.6 V to 5.5 V Output Voltage Range
  • Supports all Ceramic Capacitors
  • Monotonic Startup into Pre-biased Outputs
  • Adjustable Soft Start with a Default 1-ms Soft Start Time
  • –40°C to 150°C Operating Junction Temperature
  • Small 3.5-mm × 3.5-mm HotRod™ QFN Package
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The TPS568215OA is TI's smallest monolithic 8-A synchronous buck converter with an adaptive on-time D-CAP3™ control mode. The device integrates low RDS(on) power MOSFETs that enable high efficiency and it offers ease-of-use with minimal external component count for space-conscious power systems. Key features include a very accurate reference voltage, fast load transient response, Out-of-Audio mode, adjustable current limit and no requirement for external compensation. A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS568215OA is available in a thermally enhanced 18-pin HotRod™ QFN package and is designed to operate from –40°C to 150°C junction temperature. TPS568215OA is pin to pin compatible with TPS568215 and TPS56C215 which gives the user flexibility to pick solutions from 6A to 12A in the same footprint.

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Technical documentation

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Type Title Date
* Datasheet TPS568215OA 4.5-V to 17-V Input , 8-A Synchronous Step-Down SWIFT™ Converter datasheet Jan. 26, 2017
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

Design & development

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Hardware development

document-generic User guide
TPS568215EVM-762 is an 8 A synchronous converter evaluation module (EVM).  The EVM generates a 1.2 V output voltage from a nominal 12 V input.  The input voltage range is 4.5 V to 17 V with a typical start up voltage of 4.2 V.  The circuit is set upfor default operation frequency of 1.2 MHz.
  • 4.5 V to 17 V input voltage
  • Selectable switching frequency, 1.2 MHz operation pre-set
  • Selectable current limit, 8 A output current pre-set
  • Selectable DCM/FCCM operation, FCCM pre-set
  • DCAP3 topology

Design tools & simulation

SLVMBT9.ZIP (123 KB) - PSpice Model
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  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
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VQFN-HR (RNN) 18 View options

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