TPS563211 Synchronous Buck Converter

Texas Instruments' 3 A converter offers 1% accuracy, PG/SS, and PFM/forced-PWM in an SOT583 package

Image of Texas Instruments' TPS563211 Synchronous Buck ConverterTexas Instruments' TPS563211 is a cost-effective and highly flexible synchronous buck converter that provides selectable Eco-mode operation or force continuous conduction mode (FCCM) operation. A selectable Power-Good indicator or external soft-start is configurable through the MODE pin. Power sequencing is possible by correctly configuring the enable, Power-Good indicator, or the external soft-start. A wide input voltage range of 4.2 V to 18 V supports a variety of common input rails such as 12 V and 15 V. The converter supports up to 3 A continuous output current at output voltages between 0.6 V and 7 V.

The TPS563211 provides a fast transient response with true fixed-switching frequency through the advanced emulated current mode (AECM) control topology. With internal smart loop bandwidth control, the converter provides a  fast transient response over a wide output voltage range without the need for external compensation. The cycle-by-cycle current limit on the high-side peak current protects the device in overload situations and is enhanced by a low-side valley current limit preventing current runaway. Hiccup mode is triggered under overvoltage protection (OVP), undervoltage protection (UVP), UVLO protection, and thermal shutdown. The device is available in a 1.6 mm x 2.1 mm SOT583 package.

  • Input voltage range: 4.2 V to 18 V
  • Output voltage range: 0.6 V to 7 V
    • Continuous output current: up to 3 A
    • Switching on time: 45 ns (min.)
    • Duty cycle: 98% (max.)
  • Highly flexible and easy to use:
    • Selectable Eco-mode or FCCM operation
    • Selectable Power-Good indicator or external soft-start
    • Precise enable input
  • Cycle-by-cycle current limit for high-side and low-side MOSFETs
  • Non-latched OVP, UVP, UVLO, and TSD protections
  • High efficiency:
    • Integrated 66 mΩ and 33 mΩ MOSFETs
    • Quiescent current: 120 μA (typ.)
  • High accuracy:
    • Reference voltage accuracy: ±1% (+25°C)
    • Switching frequency tolerance: ±8.5%
  • Small solution size:
    • Internal compensation for ease-of-use
    • SOT583 package
    • Minimum external components
  • Set-top boxes (STB) and digital TVs
  • Smart speakers
  • Wired networking and broadband
  • Surveillance

TPS563211 Synchronous Buck Converter

ImageManufacturer Part NumberDescriptionFunctionOutput ConfigurationTopologyAvailable QuantityView Details
4.2-V TO 18-V, 3-A, SYNCHRONOUSTPS563211DRLR4.2-V TO 18-V, 3-A, SYNCHRONOUSStep-DownPositiveBuck0View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionMain PurposeOutputs and TypeVoltage - OutputAvailable QuantityView Details
EVAL BOARD FOR TPS563211TPS563211EVMEVAL BOARD FOR TPS563211DC/DC, Step Down1, Non-Isolated3.3V9 - ImmediateView Details
Published: 2021-10-19