EEE > Power management > Step-down switching regulator > Radiation-hardness-assured (RHA), 3-V to 7-V input, 6-A synchronous step-down converter
Summary
The Texas Instruments TPS50601A-SP is a step-down converter suitable for Space Satellite Point of Load Supply for FPGAs, Microcontrollers, data converters and ASICs. The product is radiation hardened, space-graded and is tested for on-orbit Single Event Effects (SEE) event rates in LEO and GEO using Cosmic Ray Effects on Micro-Electronics 96 (CREME96). Engineering Evaluation (/EM) Samples are available.
The current mode control feature of the product reduces component count and enables a high switching frequency. The product is offered in a thermally enhanced 20-pin ceramic, dual flatpack package for space applications and is integrated with high-side and low-side MOSFETs. Master-slave mode can be configured in addition, to provide up to 12-A of output current.
SS/TR pin controls the output voltage startup ramp allowing a stand-alone power supply operation or in tracking situations. With proper configuration of the enable and the open drain power good pins, power sequencing is also possible.
To protect the device, current runway is prevented by low-side sourcing current limit and the overload situations are prevented by cycle-by-cycle current limiting on the high-side FET
Low-side sinking current limit turns off the low-side MOSFET preventing the excessive reverse current. When thermal shutdown temperature is exceeded by the die temperature, the part is disabled by thermal shutdown.
Applications
- Space satellite point of load supply for FPGAs, microcontrollers, data converters and ASICs
- Space satellite payloads
- Radiation hardened applications
- Available in military (–55°C to 125°C) temperature range
- Engineering evaluation (/EM) Samples are available
Orderable Part Numbers
- 5962-1022102VSC
- 5962R1022102V9A: not available
- 5962R1022102VSC
- TPS50601AHKH/EM
Key features
- 5962-10221:
- Radiation hardened up to TID 100 krad(Si)
- ELDRS free 100 krad(Si) – 10 mrad(Si)/s
- Single lhup (SEL) Immune to
LET=75 MeV-cm2/mg - SEB and SEGR immune to 75 MeV-cm2/mg, SOA Curve Available
- SET/SEFI Cross-section plot available
- peak efficiency: 96.6% (VO =3.3 V)
- Integrated 58-mΩ/50-mΩ MOSFETs
- Power rail: 3 to 7 V on VIN
- 6-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 master/slave applications
- 0.804-V ±1.5% Voltage reference overtemperature, 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
Reference designs
- TIDA-070001 - 3- to 7-VIN, Space-grade point-of-load (POL) reference design with redundant eFuse inputs for OCP
Development Kits
- ALPHA-XILINX-KU060-SPACE - Alpha Data® board for Xilinx® Kintex® UltraScale™ XQRKU060 FPGA with TI power
Testing & qualification
Below are the technical documentations available for this product:
- Radiation & reliability report
- Application note
- Selection guide
- Technical artcle
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Last updated: 2021-12-21
TPS50601A-SP
Radiation-hardness-assured (RHA), 3-V to 7-V input, 6-A synchronous step-down converter
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Specs
25 C to 25 C (TPS50601AHKH/EM part number)
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