Astrodyne TDI Overview

LogoHHP Associates, Inc., a division of ESI,  is the Florida representative for Astrodyne TDI, an international leader in the design and manufacture of standard and custom EMI/EMC/RFI Filters. Astrodyne TDI designs and manufactures innovative power solutions for demanding applications worldwide. The company’s products include power supplies and EMI filters for industrial, semiconductor manufacturing, medical, consumer appliance, military, aerospace, and many varied markets.

Astrodyne TDI's power products are found in some of the most demanding situations including semiconductor manufacturing equipment, life-saving heart assist devices, medical carts, surgical tools, ion and proton beam steering (magnet driving), oil and gas exploration equipment, in-flight aircraft entertainment systems, missile and radar systems, satellite communication systems, and electric vehicles, irrigation systems, and test and measurement devices.

Astrodyne TDI's EMI filter solutions are applicable to any consumer, industrial or military application such as exercise/fitness equipment, consumer appliances, test and measurement equipment, telecommunication systems, elevators, renewable energy inverters and many military/aerospace designs.

Power Supplies

Open Frame



LiquaBlade™ Liquid-Cooled AC/DC

  • For industrial, instrumentation, medical and other apps from 5 - 450W
  • 90 - 264VAC universal wide range input
  • 3.3 - 54VDC single, dual or triple output config
  • Full agency approvals - UL, TUV and CE Mark
  • Integral EMI filtering
  • OVP and overcurrent protection
  • For industrial control, instrumentation, medical networking and other apps from 15 - 1500W
  • 90 - 264VAC universal wide range input
  • 3.3 - 48VDC single, dual, triple or quad output config
  • Full agency approvals - UL, TUV and CE
  • Integral EMI filtering
  • OVP and overcurrent protection
  • Active PFC and parallel operation
  • Designs meet medical compliance standards and low leakage current requirements
  • Can be customized
  • 5 - 450W
  • Form factors incl. external adapters, car adapters, open frame and encapsulated
  • Certified UL/EN60601-1 3rd Edition
  • Many models offer BF low leakage current rating, CF ultra low leakage current rating and/or 2 MOOP
  • Industrial grade, high power three phase AC-DC power supplies
  • 16.5 kW in a single 1U rack style package
  • High frequency switch-mode design offers full active power factor correction, near unity power factor and excellent output responsiveness.
  • 380-480V 50/60 Hz AC input range
  • Fully programmable

EMI Filters

Single Phase

Three Phase

IEC Inlet Filters

  • 1 - 150A; custom current ratings up to 2500A
  • cUL/CA, IEC/VDE/Semko and UL approved
  • Apps include, among others, food service equipment, home appliances, power supplies, induction heaters, motor controllers, consumer electronics, microwave ovens, medical equipment and HVAC
  • 480VAC, 520VAC, 600VAC; current ratings up to 2500A (higher upon request)
  • Single, dual and multi-stage
  • cUL/CA, IEC/VDE/Semko and UL approved
  • Apps include, among others, three phase inverters and frequency inverters, industrial machine tools, industrial power supplies, fixed computer systems, MRIs, X-ray equipment, elevators and escalators, vending, gaming machines, frequency converters, test equipment
  • Easy to install/use
  • Ideal for industrial and commercial electronics that require EMI/RFI protection
  • Available for general purpose and low leakage current medical versions
  • cUL/CA, IEC/VDE/Semko and UL approved

Medical Grade

Military EMI Filters - COTS

Custom Military EMI Filters

  • All Astrodyne TDI off-the-shelf filters are available in a medical grade version
  • Agency approved with variable line-to-ground capacitances to meet app and environment leakage current requirements
  • Apps include patient medical devices, diagnostic equipment, surgical beds, MRI and X-ray machines and more
  • Complete range of AC and DC EMI/RFI/EMC filters for military and aerospace apps
  • Off-the-shelf perfornance for MIL-STD-461 and RTCA/DO-160 apps
  • Ambient -40°C to +80°C (-40°F to +176°F).
  • Operating temperature range up to 100°C (212°F) and storage temp down to -55°C (-131°F).
  • Offered for any current and voltage ratings and for 50/60Hz and 400Hz apps
  • Astrodyne can meet virtually any custom need
  • Value added solutions available: integrations of other components (breakers, fuses, etc.) into modular filter package
  • Can be supplied with various levels of surge and transient voltage protection (EMP, HEMP and HERF)
  • Harmonic EMI filters also offered for MIL-STD-461 CE101 requirements