Calculation tool
TPS7H4001-SP
Radiation-hardness-assured (RHA), 3-V to 7-V input, 18-A, synchronous step-down converter
Data sheet
TPS7H4001-SP
- Radiation performance:
- Radiation-hardness-assured up to TID 100 krad(Si)
- SEL, SEB, and SEGR immune to LET = 75 MeV-cm 2/mg
- SET and SEFI characterized up to LET = 75 MeV-cm 2/mg
- Peak efficiency: 95.5% (V O = 1 V at 100 kHz)
- Power rail: 3 V to 7 V on VIN
- Flexible switching frequency options:
- 100-kHz to 1-MHz adjustable internal oscillator
- External sync capability: 100-kHz to 1-MHz
- SYNC pins can be configured as 500-kHz clocks at 90° out of phase to parallel up to 4 devices
- 0.6-V ±1.5% voltage reference over temperature, radiation, and line and load regulation for CDFP, KGD (known good die), and HTSSOP (QMLP) options
- 0.6-V ±1.7% voltage reference over temperature, radiation, and line and load regulation for HTSSOP (SHP) option
- Monotonic start-up into prebiased outputs
- Adjustable slope compensation and soft-start
- Adjustable input enable and power-good output for power sequencing
The TPS7H4001-SP is a radiation-hardness-assured, 7-V, 18-A synchronous buck converter with integrated low-resistance high-side and low-side MOSFETs. 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 TPS7H4001-SP 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. Thermal shutdown disables the part when die temperature exceeds thermal limit.
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Technical documentation
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Evaluation board
TPS7H4001EVM-CVAL — TPS7H4001 evaluation module for one-channel, 18-A, synchronous step-down converter
The TPS7H4001EVM-CVAL evaluation module (EVM) demonstrates how the TPS7H4001-SP buck converter can provide point-of-load (POL) currents up to 18 A for applications where tight regulation tolerance is imperative, such as powering ASICs and FPGAs.
User guide: PDF
Evaluation board
TPS7H4001QEVM-CVAL — TPS7H4001 evaluation module for four-channel, 72-A, synchronous step-down converter
The TPS7H4001QEVM-CVAL evaluation module (EVM) demonstrates how four TPS7H4001-SP buck converters can be configured in master/slave mode to provide a regulated power rail capable of load current up to 72 A to support typical ASIC and FPGA applications.
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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From: STAR-Dundee Ltd.
Development kit
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Simulation model
TPS7H4001-SP PSpice Worst-Case Analysis (WCA) Model (Rev. A)
SLVMDJ2A.ZIP (21 KB) - PSpice Model
Simulation model
TPS7H4001-SP TINA Average Reference Design (Rev. A)
SLVMD56A.ZIP (144 KB) - TINA-TI Reference Design
Simulation model
TPS7H4001-SP TINA Transient Reference Design (Rev. A)
SLVMD57A.ZIP (168 KB) - TINA-TI Reference Design
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 (...)
| Package | Pins | Download |
|---|---|---|
| CFP (HKY) | 34 | View options |
| DIESALE (KGD) | — | |
| HTSSOP (DDW) | 44 | View options |
Ordering & quality
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