| MajorVTC120 and MajorVTC180 Series |
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MajorVTC120 DC to DC Voltage Converter
MajorVTC120 Voltage Converters are variable-duty, cycle-switching power supplies with a precision linear regulator output (except for the MajorVTC120nr-12-24). MajorVTC120 units can be configured to run from a 12 or 24 VDC battery system to provide output voltages as shown below. Depending on the version, the ouput is either Common Negative, or Fully Isolated from the input. Three high output versions are also available.
Applications include running 24 Volt PLC controls from a 12 Volt battery system, or any other applications requiring 24 VDC when only 12 VDC is available or to provide ground isolation between two 12 or 24 VDC power systems, or between a 12 and 24 VDC power system.
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- Versatile Design
- With wide variation of input and output combinations
- Precision Linear Regulator Final Stage
- For ultra clean output for all units (except VTC120nr-12-24)
- Extremely Rugged
- Well suited for marine and other demanding environments
- High Tolerance
- Ultra-Quiet
- Ideal for Running 24V PLC Controls from 12 VDC
- Many Isolated Versions
- Including two high output for converting positive ground to negative ground or resolving other ground related problems
- Three Common Negative Versions
- Including a high output version
- Protection
- Reverse input protection
- Current limiting
- Short circuit protection
- Warranty
- Options
- Ruggedization against shock and vibration
- Conformal coating
- Parallel output diodes to allow connection between 2 or more identical units
- Can be built to Class 1, Division 2 Standards for Hazardous Duty
- Extra wide Temperature Range -40°C to +70 °C
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MajorVTC 120 Watt Specs |
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MajorVTC120-12-24 |
| MajorVTC120-12-3.6 |
| MajorVTC120i-12-12 |
| MajorVTC120i-12-24 |
| MajorVTC120i-12-48 |
| MajorVTC120i-24-12 |
| MajorVTC120i-24-24 |
| MajorVTC120i-24-48 |
| MajorVTC120i-48-12 |
| MajorVTC120i-48-24 |
| MajorVTC120ih-12-12 |
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| Mechanical & Environmental |
| Operating Temperature Range |
0 to 40°C @ Maximum Output; Derate Linearly 2.5% per °C from 40°C |
| Humidity |
0-95°C @ Relative Humiidty (non-condensing) with optional conformal coating |
| Audible Noise |
None Ødb @ 3 feet |
| Typical Service Life |
>10 years (87,600 hours) |
| Isolation Input or Output to Case |
>500 VDC |
| Dimensions (L x W x H) |
7.9 x 6.0 x 2.4 in / 20.1 x 15.2 x 6.1 cm |
| Physical |
1 inch (2.5 cm) clearance all around; Marine grade aluminum;
Black powder epoxy coat, 18-8 Stainless steel fastenings |
| Weight |
2.5 lbs / 1.1 kg |
| Connections |
4 contact output terminals |
| Warranty |
3 years |
| Safety |
CSA/UL Pending |
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| Non-Isolated Output |
| Model |
MajorVTC120-12-24 |
MajorVTC120-12-3.6 |
MajorVTC120h-12-12 |
| Input Volts |
11-15 |
11-15 |
11-15 |
| Input Amps (Maximum) |
15 |
2.3 |
11 |
| Input Fuse |
20 |
5 |
15 |
| Output Volts |
24.0 |
3.6 |
12.0 |
| Isolation Input-Output |
Common Negative |
Common Negative |
Common Negative |
| Output Amps |
5 Continuous / 5.5 Peak |
5 Continuous / 5.5 Peak |
7.5 Continuous / 8 Peak |
| Isolated Output |
| MajorVTC120i |
12-12 |
12-24 |
12-48 |
24-24 |
24-48 |
48-12 |
48-24 |
| Input Volts |
11-15 |
11-15 |
11-15 |
22-30 |
22-30 |
40-60 |
40-60 |
| Input Amps (Maximum) |
8.5 |
15 |
27 |
7.5 |
14 |
2.1 |
4.2 |
| Output Volts |
13.6 |
24.0 |
48.0 |
24.0 |
48.0 |
12.0 |
24.0 |
| Isolation Input-Output |
>500 VDC |
>500 VDC |
>500 VDC |
>500 VDC |
>500 VDC |
>500 VDC |
>500 VDC |
| Output Amps |
5 Cont /
5.5 Peak |
5 Cont /
5.5 Peak |
5 Cont /
5.5 Peak |
5 Cont /
5.5 Peak |
5 Cont /
5.5 Peak |
5 Cont /
5.5 Peak |
5 Cont /
5.5 Peak |
| Isolated High-Output |
| Model |
MajorVTC120ih-12-12 |
| Input Volts |
11-15 |
| Input Amps (Maximum) |
11 |
| Output Volts |
12.0 |
| Isolation Input-Output |
> 500 VDC |
| Output Amps |
7.5 Continuous / 8 Peak |
| Non-Regulated Output |
| Model |
MajorVTC120nr12-24 |
| Input Volts |
11-14 |
| Input Amps (Maximum) |
15 |
| Output Volts |
Vin x 2 |
| Isolation Input-Output |
> 500 VDC |
| Output Amps |
5 Continuous / 9 Peak |
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MajorVTC180 DC to DC Voltage Converter
The MajorVTC180 Voltage Converter is a variable-duty, cycle-switching power supply with a precision linear regulator output. It can be configured to run from a 32, 48 or 72 VDC power system to provide output voltages as shown below.
The MajorVTC180 features reverse input protection, current limiting, output over-voltage protection, ultra-quiet, low EMI operation and a wide opeating temperature range.
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- Input voltage range
- Allows operation from 32, 48, or 72 VDC power systems
- Protection
- Reverse input protection
- Current limiting
- Output over-voltage crowbar
- Extremely rugged
- Well suited for marine and other demanding environments
- High tolerance
- Ultra-quiet
- High Efficiency
- Wide operating temperature range
- Easily Mounted
- Warranty
- Options
- Ruggedization against shock and vibration
- Conformal coating
- Can be built to Class 1, Division 2 Standards for Hazardous Duty
- Extra wide Temperature Range -40°C to +70 °C
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MajorVTC 180 Watt Specs |
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MajorVTC180-32-12 |
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MajorVTC180-32-24 |
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MajorVTC180-48-12 |
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MajorVTC180-48-24 |
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MajorVTC180-72-12 |
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MajorVTC180-72-24 |
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| Mechanical & Environmental |
| Operating Temperature Range |
-25 to +50°C @ Maximum Output; Derate Linearly 2.5% per °C from 40°C |
| Humidity |
0-95°C @ Relative Humiidty (non-condensing) with optional conformal coating |
| Audible Noise |
None Ødb @ 3 feet |
| Typical Service Life |
>10 years (87,600 hours) |
| Isolation |
Any Input or Output to Case 1500 VDC; Input to Output - Common Negative |
| Dimensions (L x W x H) |
7.9 x 6.0 x 2.4 in / 20.1 x 15.2 x 6.1 cm |
| Physical |
1 inch (2.5 cm) clearance all around; Marine grade aluminum;
Black powder epoxy coat, 18-8 Stainless steel fastenings |
| Weight |
4.0 lbs / 1.8 kg |
| Connections |
4 contact output terminals |
| Warranty |
3 years |
| Safety |
CSA/UL Pending |
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| Output Nominal |
12 |
24 |
| Output Volts |
13.6 ± 0.05 VDC |
27.2 ± 0.05 |
| Output Crowbar |
16.5 ± 0.5 V |
| Output Amps |
15 continuous / 18 peak |
7.5 continuous / 9 peak |
| Ripple & Noise |
< 10 mV |
< 10 mV |
| Transient Response |
< 1 V for 50% Surge |
< 1 V for 50% Surge |
| Line & Load Regulation |
< ±0.5% |
< ±0.5% |
| Duty Cycle |
Peak 20% for 10 min max;
Continuous 100% for 24 hours/day |
Peak 20% for 10 min max;
Continuous 100% for 24 hours/day |
| Efficiency |
> 90% @ Maximum Output |
> 90% @ Maximum Output |
*30 - 45 VDC input range for a 24 VDC output
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| Custom DC to DC Applications - Contact MajorPower.Com |
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