IEXT-IEHR

DC/DC Converter 70W – 150W

IEXT & IEHR series are manufactured by Helios Power Solutions. Our converters have a wide input range from 12V to 110V and output voltage range from 4.5V to 55.2V.  Whether you require a custom DC output or conformal coating for harsh environments, contact our team of engineers.

  • Isolated input-output – chassis
  • Designed for industrial use
  • Output over-voltage protection (IEXT)
  • Constant current limit for charging (IEXT)
  • Input transient/surge suppression
  • Short circuit protection
  • Reverse polarity protection
  • External trim pot for output voltage adjustment
  • Output decoupling diode and dc fail alarm standard

Output Protection

IEXT(70W): Overload: constant current limit Severe overload: shuts down when output < 5V, power off to reset. IEXT Series is suitable for battery charging.
IEHR(150W): Hiccup mode current limit

Electrical & Mechanical Options

  • Rack Mount: Converter fitted into 19″x 2U sub

CSB261150W 110VDC/12VDC Redundant DC/DC Converter

  • DIN Rail Mount: Using DIN rail clips.
  • Fork Hoist Use +FORKHOIST , models below have been designed for Forklift applications.
Model CodeBase ModelSpecial Features
IEXT/24-12GIEXT/MV-12Input 20 -30Vdc, output 13.8V for forkhoist use
IEXT/48-12GIEXT/MV-12Input 40 -60Vdc, output 13.8V for forkhoist use
IEXT/110-12GIEXT/HV-12Input 66-130Vdc, output 13.8V for forkhoist use
IEXT/48-16GIEXT/MV-16Input 40 -60Vdc, output 16V for forkhoist use
IEXT/48-24GIEXT/MV-24Input 40 -60Vdc, output 24V for forkhoist use
  • Undervoltage Lockout: Available on IEXT/LV models, Lockout at 10.2V. autoresent at 12.4V, add suffix -UV
  • Use with laptops: Some laptops require a “Sense” the diode is replaced with resistor and the D+ terminal becomes the “Sense” terminal

SERIES TABLE

Models1Input Voltage RangeOutput Voltage*4AmpsPower W
IEXT/LV-05P*211-1651070
IEXT/LV-12P11-1613.8570
IEXT/LV-18P11-16183.870
IEXT/LV-24P11-16242.970
IEXT/LV-48P11-16481.570
IEXT/MV-08*321 – 6086.570
IEXT/MV-12P21 – 6013.8570
IEXT/MV-18P21 – 60183.870
IEXT/MV-24P21 – 6024370
IEXT/MV-48P21 – 60481.570
IEXT/HV-12P60 – 13213.8570
IEXT/HV-24P60 – 13224370
IEXT/HV-48P60 – 132481.570
IEHR/LV-12P10.5-1613.811.2150
IEHR/LV-24P10.5-16246.2150
IEHR/LV-36P10.5-16364.2150
IEHR/LV-48P10.5-16483.2150
IEHR/24-12P21-4013.811.2150
IEHR/24-24P21-40246.2150
IEHR/24-36P21-40364150
IEHR/24-48P21-40483.2150
IEHR/48-12P40-6013.811.2150
IEHR/48-24P40-60246.2150
IEHR/48-36P40-60364150
IEHR/48-4840-60483.2150
IEHR/HV-12P60 – 13213.811.2150
IEHR/HV-24P60 – 132246.2150
IEHR/HV-36P60 – 132364.2150
IEHR/HV-48P60 – 132483.2150
1Model codes without the -P suffix do not have diode and alarm relay fitted.
2 No overvoltage protection.
3 No input rectifier bridge,or output diode.IEXT/MV-08/01 has input range of 21-36V, & extra low noise model.
4 Refer to terminal connections below. Output voltage is set at +D output except for 12V models where the ‘+’ output is set to 13.8V  19V output models available for laptops (incl. sense terminal).

SPECIFICATIONS TABLE

Operating input voltage range12, 24, 36, 48V
Output PowerIEXT: 70W continuous
IEHR: 150W continuous
Output VoltageRefer to model table
Output CurrentRefer to model table
EfficiencyLV: 72-80%, MV/24/48: 80-87%, HV: 85-87%
Operating Temp:0 to 40°C; linearly derate to 50% output at
50°C
Isolation1KV DC input – output – chassis
Line Regulation< 0.5% over input range
Load Regulation< 0.7% open circuit to full load
Alarm contactsChangeover, 1A 30VDC

CUSTOMISED MODELS

Model code Base Model Special Features

CHR101 IEHR/24-19P 47kohm resistor fitted between “+” terminal and “+SENSE” terminal, for laptops
IEXT/24-12G IEXT/MV-12 Input 20 -30Vdc, output 13.8V for forkhoist use
IEXT/48-12G IEXT/MV-12 Input 40 -60Vdc, output 13.8V for forkhoist use
IEXT/110-12G IEXT/HV-12 Input 66-130Vdc, output 13.8V for forkhoist use
CXT103 IEXT/MV-12P Input 24Vac, output 13.8V, 50W
IEXT/LV-08 IEXT/LV Input 11-16V, output 8V 45W
IEXT/48-16G IEXT/MV-16 Input 40 -60Vdc, output 16V for forkhoist use
IEXT/48-24G IEXT/MV-24 Input 40 -60Vdc, output 24V for forkhoist use

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