| MajorVTC 300 Watt Series |
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MajorVTC300 DC to DC Voltage Converter
The MajorVTC300 Voltage Converter has a single board design which incorporates state-of-the-art switchmode technology for unmatched efficiency and ultra-quiet operation.
Multiple stages of filtering reduce radiated or conducted noise to very low levels. Extra features include adjustable output voltage, audible and visual indicators for low input volrage, low output voltage, over-temperature and overload. Safety features include reverse input protection, over-temperature shutdown, current limiting, short circuit shotdown, a dry contact alarm relay output and output overvoltage crowbar.
Optional features include a remote panel monitoring with ON/OFF control.
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- Adjustable Output Voltage
- Audible & Visual Indicators
- For constant current, low input voltage, low output voltage & over-temperature
- Extremely Rugged
- Well suited for marine and other demanding environments
- High tolerance
- Ultra-Quiet
- Protection
- Current limiting protection
- Output over-voltage crowbar
- Reverse input protection
- Dry contact output fail relay
- 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 300 Watt Specs |
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MajorVTC300-32-12 |
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MajorVTC300-32-24 |
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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 |
Any Input or Output to Case 500 VDC; Input to Putput - Common Negative |
| Dimensions (L x W x H) |
9.1 x 7.8 x 2.5 in / 23.1 x 19.8 x 6.4 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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| Model |
MajorVTC300-32-12 |
MajorVTC300-32-24 |
| Input Voltage |
20-45 |
30-45 |
| Input Amps (Maximum) |
20 |
22 |
| Input Fuse |
AGC 25 Amp |
AGC 25 Amp |
| Noise on Input |
< 25 mV |
< 25 mV |
| Output Volts |
13.6 ± 0.05 VDC |
27.2 ± 0.05 |
| Output Adjustment |
± 0.5 V |
± 0.5 V |
| Output Amps |
25 continuous / 35 peak |
20 continuous / 25 peak |
| Output Crowbar |
16.0± 0.5 V |
32.0± 1.0 V |
| Ripple & Noise |
<25 mV |
<25 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 |
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MajorVTC305 DC to DC Voltage Converter
The MajorVTC305 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 MajorVTC305 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 72VDC 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
- 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 305 Watt Specs |
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MajorVTC305-12-12 |
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MajorVTC305-12-24 |
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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 |
Any Input or Output to Case 1500 VDC; Input to Output - Common Negative |
| Dimensions (L x W x H) |
9.1 x 7.8 x 2.5 in / 23.1 x 19.8 x 6.4 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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| Model |
MajorVTC305-12-12 |
MajorVTC305-12-24 |
| Input Voltage |
10.5-18 |
10.5-28 |
| Input Amps (Maximum) |
30 |
30 |
| Input Fuse |
AGC 20 x 2 Amp |
AGC 20 x 2 Amp |
| Noise on Input |
< 25 mV |
< 25 mV |
| Low Input Voltage Alarm |
10.5 VDC |
10.5 VDC |
| Current Limit |
30 Amps in |
30 Amps in |
| Output Nominal |
12 |
24 |
| Output Volts |
Input -1 V or 13.5 to 17.0
(whichever is greater) |
Input -1 V or 24.0 to 27.5
(whichever is greater) |
| Output Amps |
27* |
27 |
| Output Crowbar |
Programmed Output Volts x 1.2 |
Programmed Output Volts x 1.2 |
| Ripple & Noise |
< 25 mV |
< 25 mV |
| Low Output Voltage Alarm |
Programmed Output Volts -2.5 VDC |
Programmed Output Volts -2.5 VDC |
| 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 |
*The actual output current capability depends upon the input/output voltage ratio. To obtain the actual output current capability at any given input voltage, use the following formula:
Output Amps = Input Volts/Output Volts x 27
For example, at 11 VDC in and 13.6 VDC out, the output current = 11/13.6 x 27 = 22.8 Amps |
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MajorVTC310 Isolated DC to DC Voltage Converter
The MajorVTC310 Voltage Converter supplies 12, 24 or 32 VDC from a 110, 220, or 300 VDC power source. Other output voltages up to 72 Volts are also available by special order.
The all new Current Mode switching design offers increased power and reliability in a compact package. Extra input and output filtering reduce EMI to extremely low levels. Reliability features include an input fuse, thermal shutdown, current limiting and short circuit shutdown with automatic reconvery.
The output voltage is easily adjusted 0.5 Volts above or below the standard output voltage to accommodate special requirements.
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- Custom Input Voltages
- Custom Output Voltages
- Fully Isolated Design
- Transient Voltage Suppressor
- Adjustable Output Voltage
- Audible & Visual Indicators
- For constant current, low input voltage, low output voltage & over-temperature
- Extremely Rugged
- Well suited for marine, industrial and other harsh environments
- Protection
- Short circuit shutdown
- Current limiting protection
- Output over-voltage crowbar
- Reverse input protection
- Dry contact output fail relay
- High Tolerance
- Ultra-Quiet
- Warranty
- Options
- Remote Control
- Ruggedization against shock and vibration
- Conformal coating
- Parallel output diodes to allow connection between 2 or more identical units
- 19" Panel Rackmount
- Extra wide Temperature Range -40°C to +70 °C
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MajorVTC 310 Watt Specs |
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MajorVTC310-110-12 |
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MajorVTC310-110-24 |
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MajorVTC310-250-12 |
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MajorVTC310-250-24 |
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MajorVTC310-300-12 |
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MajorVTC310-300-24 |
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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 |
Any Input or Output to Case 500 VDC; Input to Output - Common Negative |
| Dimensions (L x W x H) |
9.1 x 7.8 x 2.5 in / 23.1 x 19.8 x 6.4 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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| Nominal Output Voltage |
12 |
24 |
32 |
| Output Voltage |
13.6 ± 0.05 |
27.2 ± 0.05 |
36.3 ± 0.05 |
| Ouput Adjustment |
±0.5 |
±0.5 |
±0.5 |
| Output Amps Continuous |
20 |
10 |
7.5 |
| Output Amps Peak |
25 |
13 |
10 |
| Output Crowbar |
16.0 ± 0.05 V |
32.0 ± 1.0 V |
42.7 ± 1.3 V |
| Output Ripple & Noise |
< 25 mV |
< 25 mV |
< 25 mV |
| Transient Response |
< 1 V for 50% Surge |
< 1 V for 50% Surge |
< 1 V for 50% Surge |
| Line & Load Regulation |
< ±0.5% |
< ±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 |
Peak 20% for 10 min max; Continuous 100% for 24 hours/day |
| Efficiency |
> 85% @ Max Output |
> 85% @ Max Output |
> 85% @ Max Output |
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| Custom DC to DC Applications - Contact MajorPower.Com |
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