Dual output PWM controllers for space shun radiation

Author: EIS Release Date: Oct 27, 2022

Texas Instruments has introduced a pair of closely-related dual-output PWM dc-dc converter controllers for space applications, one radiation-hardened and the other radiation tolerant.

 

TPS7H5001-SP block

Both can operate across 100kHz to 2MHz and with external synchronisation, and will work with silicon or GaN power transistors via suitable drivers. Both include a 0.613V +0.7%/-1% reference.

 

TPS7H5005-SEP packageTPS7H5005-SEP is the radiation-tolerant part

 

SEL, SEB, and SEGR immune to LET = 43MeVcm2/mg

SET and SEFI characterised to LET = 43 MeVcm2/mg

TID assured for every wafer lot up to 50krad(Si)

24pin space-grade plastic TSSOP

Au bondwire and NiPdAu lead finish

Meets NASA ASTM E595 out-gassing

One fabrication, assembly, and test site

Extended product change notification

TPS7H5001-SP packageTPS7H5001-SP is the radiation-hardened part

 

 

 

RHA (radiation hardness assured) to TID 100krad(Si)

SEL, SEB, and SEGR immune to LET = 75MeVcm2/mg

SET and SEFI characterised to LET = 75MeVcm2/mg

No cross-conduction events for controller outputs observed during SET characterisation

Thermally-enhanced CFP

TPS7H5005-SEP appBoth controllers have a pair of anti-phase non-overlapping outputs with controlled dead-time, plus a pair of synchronised outputs to drive synchronous rectifiers – four outputs total for each IC.

 

For single-ended converter topologies, they allow control over maximum duty cycle.

 

 

Other features include: programmable slope compensation, soft-start and programmable leading edge blank time.

 

Potential applications include high-current buck converters for

FPGA core voltages.

 

Both of the above are the fully-featured devices in families generically named TPS7H500x-S(E)P product pages:

 

TPS7H5001-SP rad-hardened

TPS7H5005-SEP rad-tolerant

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Use the links below to purchase TPS7H5005 direct from distributors. You can see more information including price breaks and datasheets on the EWCompare search tool.