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Date: 8th July 2011

1.0 V output voltage capable rad-hard DC-DC converter chip for powering DSP and FPGA chips

International Rectifier has introduced the new 50W GH Series of radiation hardened (RAD-Hard) DC-DC converters for maximizing efficiency of onboard spacecraft applications which requires long mission life up to 15 years. The GH Series of devices are suitable for designs using new digital signal processors and FPGA technologies that require a supply voltage as low as 1.0 V.

Key features of GH series includes:
Input voltage range 18V-40V
Total ionization dose (TID) of over 100 krad (Si)
Single event effect (SEE) (Heavy Ions) with rated LET> 82 MeV.cm²/mg
Weight < 110 g
Output voltage of 1.0 V-5.0 V
Output current upto 20A
Efficiency upto 87%

Output is adjustable with an external resistor for a precise output voltage setting with the adjustment range of ±10% of the rated output voltage. Other key features by IR include remote sense compensation, remote output on/off control via Inhibit pin, input under-voltage protection with under-voltage lockout (UVLO), and synchronization for applications with multiple converters.

The GH Series was developed using a proven space-level design methodology that includes selection of established reliable components and fully de-rated to the requirements of MIL-STD-1547. The devices feature magnetically coupled feedback to insure robust operation under the intended radiation environments.

"As a low output voltage, highly efficient solution, the GH Series addresses the ongoing need to reduce the overall size and weight of the system together with the increasing requirements of FPGA and other digital circuitries for increased bandwidth and data processing speed of spacecraft electronics," said Tiva Bussarakons, marketing director for IR's HiRel DC-DC Converter Products.

Specifications:

Part Number Output Voltage
(V)
Output Current
(A)
Output Power
(W)
Typical Efficiency
(%)
SMD Part Number
GH2801S 1.0 20.0 20 73 -
GH2801R5S 1.5 20.0 30 75 -
GH2801R8S 1.8 20.0 36 78 -
GH2802R5S 2.5 20.0 50 84 -
GH2803R3S 3.3 15.2 50 85 5962-10217
GH2805S 5.0 10.0 50 87 5962-10219


Availability: Now.
Price: Pricing for the GH2803R3S begins at US $17,500 each for 5-10 unit quantities. Production orders are available immediately. Prices are subject to change. This product is subject to U.S. export control laws and regulations.

For more details visit www.irf.com

 
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