Radiation-hardness-assured (RHA), 3-V to 7-V input, 18-A, synchronous step-down converter
Product details
Parameters
Package | Pins | Size
Features
- 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: 95.5% (VO = 1 V at 100 kHz)
- Integrated 22-mΩ and 17-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: 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
- Monotonic start-up into prebiased outputs
- Adjustable slope compensation and soft-start
- Adjustable input enable and power-good output for power sequencing
- Power-good output monitor for undervoltage and overvoltage
- 34-pin, thermally-enhanced ceramic flatpack package (HKY) for space applications
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Description
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 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 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. 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.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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.
Features
- Evaluates TPS7H4001-SP radiation-hardness-assured (RHA) 18-A POL buck converter for space applications
- VIN range: 3 V to 7 V
- Output: up to 18 A at 1 V
- Low output-voltage ripple
Description
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.
Features
- Evaluates TPS7H4001-SP radiation-hardness-assured (RHA) 18-A point-of-load (POL) buck converter for space applications
- VIN range: 3 V to 7 V
- Output: up to 72 A at 1 V
- Low output-voltage ripple
Description
Design tools & simulation
Features
- 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
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
(KGD) | 0 | View options |
CFP (HKY) | 34 | View options |
Ordering & quality
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- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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