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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