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TPS7H4003-SEP
Radiation-tolerant, 3-V to 7-V, 18-A, synchronous step-down converter in space-enhanced plastic
Data sheet
TPS7H4003-SEP
- 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.
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Technical documentation
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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.
Evaluation board
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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 (...)
Evaluation board
ALPHA-3P-ADM-VA601-SPACE-AMD — Alpha Data ADM-VA601 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 (...)
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 | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (DDW) | 44 | Ultra Librarian |
Ordering & quality
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- MTBF/FIT estimates
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