IR – Hybrid-High Reliability Radiation Hardened DC-DC Converter (28V Input, Single/Dual Output (GHP-Series))

GHPThe GHP-Series of DC-DC converters are radiation hardened, high reliability converters specifically designed in response to the need for moderate power, high efficiency and well regulated output required by the modern day space design applications. Their small size and low weight make them ideal for applications such as geostationary earth orbit satellites and deep space probes. They exhibit a high tolerance to total ionizing dose, single event effects and environmental stresses such as temperature extremes, mechanical shock, and vibration.

The converters incorporate a fixed frequency single ended forward topology with magnetic feedback and an internal EMI filter that utilizes multilayer ceramic capacitors that are subjected to extensive lot screening for optimum reliability. By using two stage filtering these converters produce low input and output noise. External inhibit and synchronization input and output allow these converters to be easily incorporated into larger power systems. They are enclosed in a hermetic 3″ x 2″ x 0.475″ package constructed of an Aluminum-Silicon-Carbide (AlSiC) base and an Alloy 48 ring frame and they weigh less than 110 grams. The package utilizes rugged ceramic feed-through copper core pins and is sealed using parallel seam welding.

Manufactured in a facility fully qualified to MIL-PRF-38534, these converters are fabricated utilizing DLA Land and Maritime qualified processes. For available screening options, refer to device screening  table in the data sheet.

Non-flight versions of the GHP-Series converters are available for system development purposes. Variations in electrical specifications and screening to meet custom requirements can be accommodated.

There are two versions of it. One for 28V Bus voltage and the other for 70V Bus voltage.

Features for 28V Bus voltage

  • Total Dose > 100 kRads(Si)
  • SEE Hardened to LET up to 82 MeV.cm2/mg
  • Low Weight < 110 grams
  • Low Input & Output Noise
  • Magnetically Coupled Feedback
  • 18V to 40V DC Input Range
  • Up to 120W Output Power
  • Single and Dual Output Models Include 3.3, 5, 6, 12, 15 and ±5, ±12 and ±15V
  • High Efficiency – to 87%
  • -55°C to +125°C Operating Temperature Range
  • 100MΩ @ 500VDC Isolation
  • Under-Voltage Lockout
  • Short Circuit and Overload Protection
  • Adjustable Output with an External Resistor
  • Remote Sense on Single Output Models
  • Synchronization Input and Output
  • External Inhibit
  • > 3.3 Million Hours MTBF

Features for 70V Bus voltage

  • Total Dose > 100 kRads(Si)
  • SEE Hardened to LET up to 82 MeV.cm2/mg
  • Low Weight < 110 grams
  • Low Input & Output Noise
  • Magnetically Coupled Feedback
  • 60V to 100V DC Input Range
  • Up to 120W Output Power
  • Single and Dual Output Models Include 3.3, 5, 6, 12, 15 and ±5, ±12 and ±15V
  • High Efficiency – to 86%
  • -55°C to +125°C Operating Temperature Range
  • 100MΩ @ 500VDC Isolation
  • Under-Voltage Lockout
  • Short Circuit and Overload Protection
  • Adjustable Output with an External Resistor
  • Remote Sense on Single Output Models
  • Synchronization Input and Output
  • External Inhibit
  • > 3.3 Million Hours MTBF

Applications

  • Geostationary Earth Orbit Satellites (GEO)
  • Deep Space Satellites / Probes
  • Strategic Weapons and Communication System