Radiation-hardened, 3.5-V to 32-V, 6-A step-down voltage converter in space-enhanced plastic

Radiation-hardened, 3.5-V to 32-V, 6-A step-down voltage converter in space-enhanced plastic



Product details


Vin (Min) (V) 3.5 Vin (Max) (V) 32 Vout (Min) (V) 1 Vout (Max) (V) 30.4 Iout (Max) (A) 6 Iq (Typ) (uA) 15 Switching frequency (Min) (kHz) 350 Switching frequency (Max) (kHz) 2200 Features Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, UVLO Fixed Operating temperature range (C) -55 to 125 Rating Space Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

WQFN (RNP) 30 24 mm² 6 x 4 open-in-new Find other Buck converters (integrated switch)


  • Radiation Hardened
    • SEL, SEB, and SEGR immune up to LET = 43 MeV-cm2/mg
    • SET and SEFI characterized up to LET = 43 MeV-cm2/mg
    • TID assured for every wafer lot up to 20 krad(Si)
    • TID characterized up to 30 krad(Si)
  • Space Enhanced Plastic
    • Controlled baseline
    • Au bondwire and NiPdAu lead finish
    • Enhanced mold compound for low outgassing
    • One fabrication, assembly and test site
    • Extended product life cycle
    • Extended product change notification
    • Product traceability
  • Wide voltage conversion range:
    • tON-MIN = 60 ns (typical)
    • tOFF-MIN = 70 ns (typical)
  • Low MOSFET ON-resistance:
    • RDS_ON_HS = 53 mΩ (typical)
    • RDS_ON_LS = 31 mΩ (typical)
  • Adjustable frequency range: 350 kHz to 2.2 MHz
  • Synchronizable to external clock
  • Internal compensation
  • Power-good flag
  • Precision enable to program system UVLO
  • Fixed or adjustable soft-start time
  • Cycle-by-cycle current limiting
  • Short-circuit protection with hiccup mode
  • Thermal shutdown protection
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The TPS7H4010-SEP is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 6 A of load current from a supply voltage ranging from 3.5 V to 32 V. The TPS7H4010-SEP provides exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, FPWM option, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load and optional external bias improve efficiency over the entire load range. The device requires few external components and has a pinout designed for simple PCB layout with optimal EMI and thermal performance. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection.

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Technical documentation

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Type Title Date
* Data sheet TPS7H4010-SEP Radiation Hardened 3.5-V to 32-V, 6-A Synchronous Step-Down Voltage Converter in Space Enhanced Plastic datasheet Nov. 19, 2020
* Radiation & reliability report Single-Event Effects Test Report of the TPS7H4010-SEP Dec. 10, 2020
* VID TPS7H4010-SEP VID V62-19623 Dec. 08, 2020
* Radiation & reliability report TPS7H4010-SEP Neutron Displacement Damage Characterization Nov. 30, 2020
* Radiation & reliability report TPS7H4010-SEP Production Flow and Reliability Report Nov. 30, 2020
* Radiation & reliability report TPS7H4010-SEP Total Ionizing Dose (TID) Radiation Report Nov. 25, 2020
Selection guide TI Space Products (Rev. H) Jan. 27, 2021
User guide TPS7H4010EVM User's Guide Oct. 07, 2020
Technical article Space Enhanced Plastic gives designers a new solution for emerging low-Earth orbit commercial applications Oct. 03, 2019
Application note Reduce the risk in NewSpace with Space Enhanced Plastic products Jul. 29, 2019
E-book Radiation Handbook for Electronics (Rev. A) May 21, 2019
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

The TPS7H4010 evaluation module (EVM) demonstrates how the TPS7H4010-SEP buck converter can provide a regulated power rail capable of load current up to 6 A to support typical satellite power applications.

  • Radiation-hardened 6-A point-of-load (POL) buck converter for space applications
  • Input range from 3.5 V to 32 V
  • Output of up to 6 A
  • Space-enhanced plastic (SEP)

Design tools & simulation

SNVMC39A.TSC (18 KB) - TINA-TI Spice Model
SNVMC40.ZIP (349 KB) - PSpice Model
SNVMC53.TSC (56 KB) - TINA-TI Spice Model
SNVMC54.ZIP (12683 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
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CAD/CAE symbols

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WQFN (RNP) 30 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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