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TPS7H4003-SEP

ACTIVE

Radiation-tolerant, 3-V to 7-V, 18-A, synchronous step-down converter in space-enhanced plastic

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Data sheet

TPS7H4003-SEP

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 18 Vin (min) (V) 3 Vin (max) (V) 7 Topology Buck Type Converter 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 Control mode current mode Vout (min) (V) 0.605 Vout (max) (V) 6.65 Rating Space Operating temperature range (°C) -55 to 125 Iq (typ) (A) 0.004
Iout (max) (A) 18 Vin (min) (V) 3 Vin (max) (V) 7 Topology Buck Type Converter 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 Control mode current mode Vout (min) (V) 0.605 Vout (max) (V) 6.65 Rating Space Operating temperature range (°C) -55 to 125 Iq (typ) (A) 0.004
HTSSOP (DDW) 44 113.4 mm² 14 x 8.1
  • Radiation performance:
    • 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 50 krad(Si)
  • Peak efficiency: 94% (VO = 1 V at 100 kHz)
  • Integrated 17-mΩ and 9-mΩ MOSFETs
  • Power rail: 3 V to 7 V on VIN
  • Flexible switching frequency options:
    • 100-kHz to 1-MHz adjustable internal oscillator
    • External sync capability: 100kHz to 1MHz
    • SYNC pins can be configured as 500-kHz clocks at 90° out of phase to parallel up to 4 devices
  • 0.6-V ±1.7% voltage reference over temperature, radiation, and line and load regulation
  • Monotonic start-up into prebiased outputs
  • Adjustable slope compensation and soft-start
  • Adjustable input enable and power-good output for power sequencing
  • 44-pin PowerPAD™ HTSSOP package
  • 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
  • Radiation performance:
    • 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 50 krad(Si)
  • Peak efficiency: 94% (VO = 1 V at 100 kHz)
  • Integrated 17-mΩ and 9-mΩ MOSFETs
  • Power rail: 3 V to 7 V on VIN
  • Flexible switching frequency options:
    • 100-kHz to 1-MHz adjustable internal oscillator
    • External sync capability: 100kHz to 1MHz
    • SYNC pins can be configured as 500-kHz clocks at 90° out of phase to parallel up to 4 devices
  • 0.6-V ±1.7% voltage reference over temperature, radiation, and line and load regulation
  • Monotonic start-up into prebiased outputs
  • Adjustable slope compensation and soft-start
  • Adjustable input enable and power-good output for power sequencing
  • 44-pin PowerPAD™ HTSSOP package
  • 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

The TPS7H4003-SEP is a radiation-tolerant, 7-V, 18-A synchronous buck converter with integrated low-resistance high-side and low-side MOSFETs in a thermally enhanced 34-pin ceramic flatpack package. High efficiency and reduced component count are achieved through current mode control.

The output voltage start-up 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 possible by correctly configuring the enable and the power good pins. The TPS7H4003-SEP can be configured in primary-secondary mode and with the SYNC2 pin, four devices can be configured in parallel without an external clock.

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 protection which prevents current runaway. There is also a low-side sinking current protection which turns off the low-side MOSFET to prevent excessive reverse current. Thermal shutdown disables the part when die temperature exceeds thermal limit.

The TPS7H4003-SEP is a radiation-tolerant, 7-V, 18-A synchronous buck converter with integrated low-resistance high-side and low-side MOSFETs in a thermally enhanced 34-pin ceramic flatpack package. High efficiency and reduced component count are achieved through current mode control.

The output voltage start-up 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 possible by correctly configuring the enable and the power good pins. The TPS7H4003-SEP can be configured in primary-secondary mode and with the SYNC2 pin, four devices can be configured in parallel without an external clock.

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 protection which prevents current runaway. There is also a low-side sinking current protection which turns off the low-side MOSFET to prevent excessive reverse current. Thermal shutdown disables the part when die temperature exceeds thermal limit.
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Technical documentation

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Type Title Date
* Data sheet TPS7H4003-SEP Radiation-Tolerant 3-V to 7-V Input 18-A Synchronous Buck Converter in Space Enhanced Plastic datasheet PDF | HTML 12 Jan 2022
* Radiation & reliability report TPS7H4003-SEP Synchronous Step-Down Converter Single-Event Effect (SEE) (Rev. A) PDF | HTML 26 May 2023
* VID TPS7H4003-SEP VID V62-21609 07 Apr 2022
* Radiation & reliability report TPS7H4003-SEP Neutron Displacement Damage (NDD) 11 Feb 2022
* Radiation & reliability report TPS7H4003-SEP Total Ionizing Dose (TID) 09 Feb 2022
* Radiation & reliability report TPS7H4003-SEP Production Flow and Reliability Report PDF | HTML 08 Feb 2022
EVM User's guide TPS7H4003EVM User's Guide (Rev. B) PDF | HTML 07 Feb 2024
Technical article 航太級強化產品如何因應低地球軌道應用的挑戰 (Rev. A) PDF | HTML 11 Jan 2024
Technical article 우주 항공 강화 제품이 저지구 궤도 애플리케이션의 과제를 해결하는 방법 (Rev. A) PDF | HTML 11 Jan 2024
Technical article How Space Enhanced Products Address Challenges in low Earth orbit Applications (Rev. A) PDF | HTML 18 Dec 2023
Application note Using Space Grade Power Components to Power AMD Kintex XQRKU060 FPGA PDF | HTML 08 Nov 2023
Application note Using Space Grade Power Components to Power Microchip RT PolarFire FPGA PDF | HTML 20 Sep 2023
Application note Space Grade Power Solution for Microsemi RTG4 PDF | HTML 02 May 2023
Application note Reduce the Risk in Low-Earth Orbit Missions with Space Enhanced Plastic Products (Rev. A) PDF | HTML 15 Sep 2022
Selection guide TI Space Products (Rev. I) 03 Mar 2022
E-book Radiation Handbook for Electronics (Rev. A) 21 May 2019

Design & development

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

Evaluation board

TPS7H4003EVM — TPS7H4003 evaluation module for 3-V to 7-V input, 18-A, synchronous step-down converter

The TPS7H4003 evaluation module (EVM) demonstrates how the TPS7H4003-SEP buck converter can provide a regulated power rail capable of load current up to 18 A to support typical application-specific integrated circuit (ASIC) and field-programmable gate array (FPGA) applications.
User guide: PDF | HTML
Not available on TI.com
Evaluation board

ALPHA-3P-ADM-VA600-SPACE-AMD — Alpha Data ADM-VA600 kit using AMD Versal core XQRVC1902 ACAP and TI radiation-tolerant products

This is a 6U VPX form factor highlighting the AMD-Xilinx® Versal AI Core XQRVC1902 adaptable SoC/FPGA. The ADM-VA600 is modular board design with one FMC+ connector, DDR4 DRAM and system monitoring. The majority of the components are radiation-tolerant power management, interface, clocking and (...)

From: Alpha Data Parallel Systems Ltd.
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Simulation model

TPS7H4003-SEP PSpice Model

SLVMDR6.ZIP (32 KB) - PSpice Model
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Simulation model

TPS7H4003-SEP PSpice Transient Model

SLVMDR7.ZIP (34 KB) - PSpice Model
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Calculation tool

SLVRBJ0 — TPS7H4003-SEP Buck Converter Calculator

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS7H4003-SEP — Radiation-tolerant, 3-V to 7-V, 18-A, synchronous step-down converter in space-enhanced plastic
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Reference designs

TIDA-010260 — 4T5R space-grade integrated transceiver reference design

The 4T5R space-grade integrated transceiver reference design reference design incorporates a full RF sampling transceiver including a clocking solution and power solution. The design incoporates all -SEP flavor TI devices and space-qualified passives within a VITA-57 form factor.
Design guide: PDF
Package Pins Download
HTSSOP (DDW) 44 View options
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