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TPS7H4002-SP

AKTIV

Radiation-hardened, QML-V, 3V to 5.5V input, 3A, synchronous step-down converter

Produktdetails

Rating Space Topology Buck Iout (max) (A) 3 Vin (max) (V) 5.5 Vin (min) (V) 3 Vout (max) (V) 5.3 Vout (min) (V) 0.804 Features Enable, Frequency synchronization, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, Tracking, UVLO adjustable Control mode current mode Operating temperature range (°C) -55 to 125 Iq (typ) (A) 0.0025 Duty cycle (max) (%) 100
Rating Space Topology Buck Iout (max) (A) 3 Vin (max) (V) 5.5 Vin (min) (V) 3 Vout (max) (V) 5.3 Vout (min) (V) 0.804 Features Enable, Frequency synchronization, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, Tracking, UVLO adjustable Control mode current mode Operating temperature range (°C) -55 to 125 Iq (typ) (A) 0.0025 Duty cycle (max) (%) 100
CFP (HKH) 20 93.726 mm² (— mm × — mm) DIESALE (KGD) See data sheet
  • Radiation performance:
    • Radiation-hardness-assured up to TID 100 krad(Si)
    • SEL, SEB, and SEGR immune to LET = 75 MeV-cm2/mg
    • SET and SEFI characterized up to LET = 75 MeV-cm2/mg
  • Peak efficiency: 96.9% (VO = 2.5 V)
  • Integrated 50-mΩ and 35-mΩ MOSFETs
  • Power rail: 3 to 5.5 V on VIN
  • 3-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 primary-secondary applications
  • 0.807-V ±1.5% voltage reference over temperature, radiation, and line and load regulation
  • 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 ultra-small, thermally-enhanced ceramic flatpack package (HKH) for space applications
  • Radiation performance:
    • Radiation-hardness-assured up to TID 100 krad(Si)
    • SEL, SEB, and SEGR immune to LET = 75 MeV-cm2/mg
    • SET and SEFI characterized up to LET = 75 MeV-cm2/mg
  • Peak efficiency: 96.9% (VO = 2.5 V)
  • Integrated 50-mΩ and 35-mΩ MOSFETs
  • Power rail: 3 to 5.5 V on VIN
  • 3-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 primary-secondary applications
  • 0.807-V ±1.5% voltage reference over temperature, radiation, and line and load regulation
  • 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 ultra-small, thermally-enhanced ceramic flatpack package (HKH) for space applications

The TPS7H4002-SP is a radiation hardened, 5.5-V, 3-A synchronous step-down converter, which is optimized for small designs through high efficiency and by 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, which reduces the inductor footprint.

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. In addition, the TPS7H4002-SP can be configured in primary-secondary mode for parallel operation.

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 limit.

The TPS7H4002-SP is a radiation hardened, 5.5-V, 3-A synchronous step-down converter, which is optimized for small designs through high efficiency and by 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, which reduces the inductor footprint.

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. In addition, the TPS7H4002-SP can be configured in primary-secondary mode for parallel operation.

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 limit.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TPS7H4002-SP Radiation-Hardness-Assured 3-V to 5.5-V Input, 3-A Synchronous Step Down Converter datasheet (Rev. B) PDF | HTML 24.01.2022
* Strahlungs- und Zuverlässigkeitsbericht TPS7H4002-SP Total Ionizing Dose (TID) (Rev. A) 31.08.2021
* Strahlungs- und Zuverlässigkeitsbericht TPS7H4002-SP Neutron Displacement Damage (NDD) Characterization 28.07.2021
* Strahlungs- und Zuverlässigkeitsbericht Single-Event Effects Test Report of the TPS7H4002-SP Sync Step-Down Converter 10.06.2021
* SMD TPS7H4002-SP SMD 5962-20210 02.09.2021
Auswahlhilfe TI Space Products (Rev. L) 27.03.2026
Anwendungshinweis Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form (Rev. A) PDF | HTML 05.11.2025
Application brief DLA Approved Optimizations for QML Products (Rev. C) PDF | HTML 17.06.2025
Anwendungshinweis Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. B) PDF | HTML 10.06.2025
Weitere Dokumente TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B) 20.02.2025
Anwendungshinweis Using Space Grade Power Components to Power Microchip RTAX-S/SL FPGA PDF | HTML 29.09.2023
Anwendungshinweis QML flow, its importance, and obtaining lot information (Rev. C) 30.08.2023
Anwendungshinweis Space Grade Power Solution for Microsemi RTG4 PDF | HTML 02.05.2023
Anwendungshinweis Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 19.10.2022
Application brief Why Radiation Hardness Matters for Point-of-Load Converters PDF | HTML 13.01.2022
Anwendungshinweis DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 21.08.2020
E-book Radiation Handbook for Electronics (Rev. A) 21.05.2019

Design und Entwicklung

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Evaluierungsplatine

TPS7H4002EVM-CVAL — TPS7H4002-SP Synchroner 3-A-Abwärtswandler, 3 V bis 5,5 V Eingangsspannung – Evaluierungsmodul

Der TPS7H4002EVM-CVAL zeigt, wie der strahlungsfeste Abwärtswandler TPS7H4002-SP eine geregelte Stromschiene mit einem Laststrom von bis zu 3 A zur Unterstützung typischer weltraumtauglicher Power-Management-Anwendungen bereitstellt.

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TPS7H4002-SP PSpice Model

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TPS7H4002-SP PSpice Transient Model

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