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TPS50601A-SP ACTIVE Radiation-hardness-assured (RHA), 3-V to 7-V input, 6-A synchronous step-down converter Improved SEE radiation performance, improved voltage reference and wider VIN support.

Product details

Vin (Min) (V) 3 Vin (Max) (V) 6.3 Vout (Min) (V) 0.795 Vout (Max) (V) 6.35 Iout (Max) (A) 6 Iq (Typ) (uA) 5000 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 1000 Features Enable, Frequency Synchronization, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Adjustable Operating temperature range (C) -55 to 125, 25 to 25 Rating Space Regulated outputs (#) 1
Vin (Min) (V) 3 Vin (Max) (V) 6.3 Vout (Min) (V) 0.795 Vout (Max) (V) 6.35 Iout (Max) (A) 6 Iq (Typ) (uA) 5000 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 1000 Features Enable, Frequency Synchronization, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Adjustable Operating temperature range (C) -55 to 125, 25 to 25 Rating Space Regulated outputs (#) 1
CFP (HKH) 20 94 mm² 12.7 x 2.9
  • 5962R10221:
    • Radiation Hardness Assurance (RHA) up to TID 100 krad (Si)
    • ELDRS Free 100 krad (Si) – 10 mRAD(Si)/s
    • Single Event Latchup (SEL) Immune to
      LET = 85 MeV-cm2/mg (See Radiation Report, http://www.ti.com/radiation)
    • SEB and SEGR Immune to 85 MeV-cm2/mg, SOA Curve Available (See Radiation Report)
    • SET/SEFI Cross-Section Plot Available (See Radiation Report)
  • Peak Efficiency: 95% (VO = 3.3 V)
  • Integrated 55-mΩ/50-mΩ MOSFETs
  • Split Power Rail: 1.6 to 6.3 V on PVIN
  • Power Rail: 3 to 6.3 V on VIN
  • 6-A Maximum Output Current
  • Flexible Switching Frequency Options:
    • 100-kHz to 1-MHz Adjustable Internal Oscillator
    • External Sync Capability: 100 kHz to 1 MHz
    • Sync Pin can be Configured as a 500-kHz Output for Master/Slave Applications
  • 0.795-V ±1.258% Voltage Reference at 25°C
  • Monotonic Start-Up into Prebiased Outputs
  • Adjustable Soft Start Through External Capacitor
  • Input Enable and Power-Good Output for Power Sequencing
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Adjustable Input Undervoltage Lockout (UVLO)
  • 20-Pin Thermally-Enhanced Ceramic Flatpack Package (HKH)
  • See www.ti.com/swift for SWIFT Documentation
  • See the Tools & Software Tab
  • 5962R10221:
    • Radiation Hardness Assurance (RHA) up to TID 100 krad (Si)
    • ELDRS Free 100 krad (Si) – 10 mRAD(Si)/s
    • Single Event Latchup (SEL) Immune to
      LET = 85 MeV-cm2/mg (See Radiation Report, http://www.ti.com/radiation)
    • SEB and SEGR Immune to 85 MeV-cm2/mg, SOA Curve Available (See Radiation Report)
    • SET/SEFI Cross-Section Plot Available (See Radiation Report)
  • Peak Efficiency: 95% (VO = 3.3 V)
  • Integrated 55-mΩ/50-mΩ MOSFETs
  • Split Power Rail: 1.6 to 6.3 V on PVIN
  • Power Rail: 3 to 6.3 V on VIN
  • 6-A Maximum Output Current
  • Flexible Switching Frequency Options:
    • 100-kHz to 1-MHz Adjustable Internal Oscillator
    • External Sync Capability: 100 kHz to 1 MHz
    • Sync Pin can be Configured as a 500-kHz Output for Master/Slave Applications
  • 0.795-V ±1.258% Voltage Reference at 25°C
  • Monotonic Start-Up into Prebiased Outputs
  • Adjustable Soft Start Through External Capacitor
  • Input Enable and Power-Good Output for Power Sequencing
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Adjustable Input Undervoltage Lockout (UVLO)
  • 20-Pin Thermally-Enhanced Ceramic Flatpack Package (HKH)
  • See www.ti.com/swift for SWIFT Documentation
  • See the Tools & Software Tab

The TPS50601-SP is a radiation hardened, 6.3-V, 6-A synchronous step-down converter, which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and a high switching frequency, reducing the inductor's footprint. The devices are offered in a thermally enhanced 20-pin ceramic, dual in-line flatpack package.

The output voltage startup ramp is controlled by the SS/TR pin which allows operation as either a stand alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins.

Cycle-by-cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature.

The TPS50601-SP is a radiation hardened, 6.3-V, 6-A synchronous step-down converter, which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and a high switching frequency, reducing the inductor's footprint. The devices are offered in a thermally enhanced 20-pin ceramic, dual in-line flatpack package.

The output voltage startup ramp is controlled by the SS/TR pin which allows operation as either a stand alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins.

Cycle-by-cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature.

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Technical documentation

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Type Title Date
* Data sheet TPS50601-SP Radiation Hardened 1.6- to 6.3-V Input, 6-A Synchronous Buck Converter datasheet 05 Dec 2015
* Radiation & reliability report TPS50601-SP Neutron Displacement Damage Characterization (Rev. A) 29 Mar 2019
* Radiation & reliability report TPS50601-SP Synchronous Step-Down Converter Single-Event Effects Summary (Rev. A) 11 Dec 2017
* Radiation & reliability report TPS50601-SP Total Ionizing Dose (TID) Radiation Report 08 Jul 2016
* SMD TPS50601-SP SMD 5962-10221 21 Jun 2016
Application note Why Radiation Hardness Matters for Point-of-Load Converters 13 Jan 2022
Selection guide TI Space Products (Rev. H) 27 Jan 2021
Application note DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 21 Aug 2020
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations 18 May 2020
Application note Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form 18 May 2020
Application note TPS50601x-SP Comparison Guide (Rev. A) 06 Apr 2020
Application note Single-Event Effects Confidence Interval Calculations 14 Jan 2020
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing 17 Jun 2019
E-book Radiation Handbook for Electronics (Rev. A) 21 May 2019
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note TI Space Rated Power Solution for Microsemi® RTG4™ FPGA (Rev. A) 27 Jul 2018
Technical article 7 things to know about spacecraft subsystems before your next trip to Mars 06 Jul 2016
Technical article How to configure a Point of Load converter (POL) for negative or isolated output voltages 08 Oct 2013
User guide TPS50601SPEVM, 6-A/12-A, SWIFT™ Regulator Evaluation Module 30 Jan 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS50601SPEVM-D — TPS50601-SP dual-operation evaluation module

The TPS50601-SP DC/DC converter is designed to provide up to a 6-A output in single phase operation (TPS50601SPEVM-S) and up to 12 A in dual phase operation (TPS50601SPEVM-D), when each phase is configured to provide 6-A per phase.

TPS50601SPEVM-D can also be configured such that each phase (...)

In stock
Limit: 3
Evaluation board

TPS50601SPEVM-S — TPS50601-SP single-operation evaluation module

The TPS50601-SP DC/DC converter is designed to provide up to a 6-A output in single phase operation (TPS50601SPEVM-S) and up to 12 A in dual phase operation (TPS50601SPEVM-D), when each phase is configured to provide 6-A per phase.

TPS50601SPEVM-D can also be configured such that each phase (...)

In stock
Limit: 3
Simulation model

TPS50601-SP TINA-TI Average Spice Model

SLVMBS9.ZIP (8 KB) - TINA-TI Spice Model
Simulation model

TPS50601-SP TINA-TI Average Reference Design

SLVMBT0.TSC (860 KB) - TINA-TI Reference Design
Simulation model

TPS50601-SP TINA-TI Transient Reference Design

SLVMBT4.TSC (916 KB) - TINA-TI Reference Design
Simulation model

TPS50601-SP TINA-TI Transient Spice Model

SLVMBT5.ZIP (60 KB) - TINA-TI Spice Model
Simulation model

TPS50601-SP TINA Unencrypted Transient Model

SLVMDD3.ZIP (98 KB) - TINA-TI Spice Model
Simulation model

TPS50601-SP Unencrypted TINA Average Model Package

SLVMDE9.ZIP (29 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Calculation tool

TPS50601-SP Buck Converter Calculator (Rev. A)

SLVRBG5A.ZIP (95 KB)
Reference designs

PMP8904 — TPS50601SPEVM MINI POL Reference Design

The TPS50601-SP MINI POL converter is designed to demonstrate reduced footprint that can be achieved using a single sided layout. The footprint can be further reduced if configured in dual sided layout. Reference Schematic and BOM are attached for the Mini POL with recommended space qualified (...)
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