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Dual Output, Low Input Voltage Controllers with Sequencing

TPS56300 is not recommended for new designs
Although this product continues to be in production to support previous designs, we don't recommend it for new designs. Consider one of these alternates:
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Similar functionality to the compared device
LM26420 ACTIVE Dual 2 A, high-efficiency synchronous DC/DC converter 3 to 5.5-Vin, 2-A converter available in QFN or SOP package.
NEW TPS62442 ACTIVE 2.75-V to 6-V, dual 2-A or 3-A and 1-A step-down converter in QFN package New generation

Product details

Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 1.3 Vout (max) (V) 3.3 Iout (max) (A) 20 Iq (typ) (mA) 15 Switching frequency (max) (kHz) 500 Features Dynamic Voltage Scaling, Enable, Power good Operating temperature range (°C) to Regulated outputs (#) 2 Number of phases 1 Rating Catalog Type Controller
Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 1.3 Vout (max) (V) 3.3 Iout (max) (A) 20 Iq (typ) (mA) 15 Switching frequency (max) (kHz) 500 Features Dynamic Voltage Scaling, Enable, Power good Operating temperature range (°C) to Regulated outputs (#) 2 Number of phases 1 Rating Catalog Type Controller
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • 2.8 V – 5.5 V Input Voltage Range
  • Programmable Dual Output Controller
    Supports Popular DSP and Microcontroller
    Core and I/O Voltages
    • Switching Regulator Controls Core
      Voltage
    • Low Dropout Controller Regulates I/O
      Voltage
  • Programmable Slow-Start Ensures
    Simultaneous Powerup of Both Outputs
  • Power Good Output Monitors Both Outputs
  • Fast Ripple Regulator Reduces Bulk
    Capacitance for Lower System Costs
  • ±1.5% Reference Voltage Tolerance
  • Efficiencies Greater than 90%
  • Overvoltage, Undervoltage, and Adjustable
    Overcurrent Protection
  • Drives Low-Cost Logic Level N-Channel
    MOSFETs Through Entire Input Voltage
    Range
  • Evaluation Module TPS56300EVM-139
    Available

PowerPAD is a trademark of Texas Instruments Incorporated.

  • 2.8 V – 5.5 V Input Voltage Range
  • Programmable Dual Output Controller
    Supports Popular DSP and Microcontroller
    Core and I/O Voltages
    • Switching Regulator Controls Core
      Voltage
    • Low Dropout Controller Regulates I/O
      Voltage
  • Programmable Slow-Start Ensures
    Simultaneous Powerup of Both Outputs
  • Power Good Output Monitors Both Outputs
  • Fast Ripple Regulator Reduces Bulk
    Capacitance for Lower System Costs
  • ±1.5% Reference Voltage Tolerance
  • Efficiencies Greater than 90%
  • Overvoltage, Undervoltage, and Adjustable
    Overcurrent Protection
  • Drives Low-Cost Logic Level N-Channel
    MOSFETs Through Entire Input Voltage
    Range
  • Evaluation Module TPS56300EVM-139
    Available

PowerPAD is a trademark of Texas Instruments Incorporated.

The high performance TPS56300 synchronous-buck regulator provides two supply voltages to power the core and I/O of digital signal processors, such as the ‘C6000 family. The ripple regulator, using hysteretic control with droop compensation, is configured for the core voltage and features fast transient response time reducing output bulk capacitance.

The LDO controller drives an external N-channel power MOSFET and functions as an LDO regulator, suitable for powering the I/O or as a power distribution switch. To promote better system reliability during power up, voltage sequencing and protection are controlled such that the core and I/O power up together with the same slow-start voltage. At power down, the LDO and ripple regulator are discharged towards ground for added protection. The TPS56300 also includes inhibit, slowstart, and under-voltage lockout features to aide in controlling power sequencing. A tri-level voltage identification network (VID) sets both regulated voltages to any of 9 preset voltage pairs from 1.3 V to 3.3 V. Other voltages are possible by implementing an external voltage divider. Strong MOSFET drivers, with a typical peak current rating of 2-A sink and source are included on chip, enabling high system currents beyond 30 A. The high-side driver features a floating bootstrap driver with the internal bootstrap synchronous rectifier. Many protection features are incorporated within the device to ensure better system integrity. An open-drain output POWER GOOD status circuit monitors both output voltages, and is pulled low if either output fall below the threshold. An over current shutdown circuit protects the high-side power MOSFET against short-to-ground faults at load or the phase node, while over voltage protection turns off the output drivers and LDO controller if either output exceeds its threshold. Under voltage protection turns off the high-side and low-side MOSFET drivers and the LDO controller if either output is 25% below VREF. Lossless current-sensing is done by detecting the drain-source voltage drop across the high-side power MOSFET while it is conducting. The TPS56300 is fully compliant with TI DSP power requirements such as the ‘C6000 family.

The high performance TPS56300 synchronous-buck regulator provides two supply voltages to power the core and I/O of digital signal processors, such as the ‘C6000 family. The ripple regulator, using hysteretic control with droop compensation, is configured for the core voltage and features fast transient response time reducing output bulk capacitance.

The LDO controller drives an external N-channel power MOSFET and functions as an LDO regulator, suitable for powering the I/O or as a power distribution switch. To promote better system reliability during power up, voltage sequencing and protection are controlled such that the core and I/O power up together with the same slow-start voltage. At power down, the LDO and ripple regulator are discharged towards ground for added protection. The TPS56300 also includes inhibit, slowstart, and under-voltage lockout features to aide in controlling power sequencing. A tri-level voltage identification network (VID) sets both regulated voltages to any of 9 preset voltage pairs from 1.3 V to 3.3 V. Other voltages are possible by implementing an external voltage divider. Strong MOSFET drivers, with a typical peak current rating of 2-A sink and source are included on chip, enabling high system currents beyond 30 A. The high-side driver features a floating bootstrap driver with the internal bootstrap synchronous rectifier. Many protection features are incorporated within the device to ensure better system integrity. An open-drain output POWER GOOD status circuit monitors both output voltages, and is pulled low if either output fall below the threshold. An over current shutdown circuit protects the high-side power MOSFET against short-to-ground faults at load or the phase node, while over voltage protection turns off the output drivers and LDO controller if either output exceeds its threshold. Under voltage protection turns off the high-side and low-side MOSFET drivers and the LDO controller if either output is 25% below VREF. Lossless current-sensing is done by detecting the drain-source voltage drop across the high-side power MOSFET while it is conducting. The TPS56300 is fully compliant with TI DSP power requirements such as the ‘C6000 family.

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Technical documentation

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Type Title Date
* Data sheet Dual Output Low-Input-Voltage DSP Power Supply Controller with Sequencing datasheet (Rev. B) 20 Mar 2002
Application note Using the TPS56300 for Powering DSPs (Rev. A) 16 Jan 2001
Application note Power Supply Sequencing Solutions for Dual Supply Voltage DSPs (Rev. A) 05 Jul 2000

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