MPS/100 PC/104 Power Supply
Motium's MPS/100 is a 120W PC/104 format power supply (DC-DC converter) module. Its wide input voltage range makes it ideal for vehicle (car, bus, truck, aircraft and marine), battery and unregulated input applications.
Its unique design results in very high efficiencies, allowing for high output currents at high ambient temperatures. For example, no fan cooling is needed at 82W output power (+12V @ 3.5A and 5V @ 8A), even at ambient temperatures of 70C.
Another important feature is that the +12V regulator does not take power from the +5V supply, which means that high output currents can be simultaneously supplied from the +5V and +12V outputs, without risk of the MPS/100 running too hot (which is the case with modules that up-convert +5V to +12V).
The MPS/100 is designed for use as:
- a mezzanine power supply module for single board computers (SBCs).
- a power supply module within a PC/104 stack.
Input and output power connectors are designed for automotive use, with a secure locking mechanism, ideal for high-vibration environments (like vehicles), unlike screw terminals.
Input transient and load-dump protection is provided via a 5kW transient suppressor and filter circuit.
A sophisticated intelligent power on / off control function is provided by an optional on-board microcontroller. Configurable functions provided include:
- Time delay between when vehicle is turned on and output power goes on.
- Time delay between when vehicle is turned off and output power goes off.
- Output power off if the vehicle's engine is not running, and the vehicle's battery voltage falls below a specified voltage.
Configuration is via an RS232 data port, using Motium's configuration utility (Windows and Linux versions available). The RS232 port can also be used to collect status information from the power supply.
Note: the power supply is supplied as shown in the photograph. No additional heatsink is required.
Key Applications
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Key Specification
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Specifications
Specifications for the MPS/100 are listed below.
| Regulator Performance | |||
|---|---|---|---|
| +5V | +12V | -12V | |
| Output Current** | 14A peak. 8A continuous at 70°C with no fan cooling. | 5A maximum. 4A continuous at 70°C with no fan cooling. | 500mA maximum. 300mA continuous. |
| Output Ripple | 20mVp-p. | 20mVp-p. | |
| Line Regulation | +/-1%. | +/-1%. | +/-10%. |
| Load Regulation | +/-1%. | +/-1%. | +/-10%. |
| Efficiency*** | 95% typical. | 93% typical. | 88% typical. |
| Overload Protection | Short circuit protected. | Short circuit protected. | - |
| Overall | |||
| Input voltage* | 6VDC to 36VDC*. | ||
| Input current | The maximum input current depends on the output power. It should be limited to 14A continuous. | ||
| Output power** | 120W maximum. 82W (5V @ 8A and +12V @ 4A) fanless. | ||
| Environmental Characteristics | |||
| Operating Temperature | -30°C to +85°C. | ||
| Storage Temperature | -40°C to +85°C. | ||
| Humidity | Storage: 10% to 90% non-condensing. | ||
| Physical Characteristics | |||
| Dimensions | PC/104 format module. Overall: 90mm (3.55") wide x 95mm (3.75") long, plus connectors. Component height: Max top side: 12mm. Max bottom side: 3mm. |
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| Weight | 115g net. 160g gross. | ||
| PC/104 Connector | Stack-through connector. Keying pins (B10 and C19) removed. Keying plugs not fitted. |
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* The input voltage range is based on no transient protection. With vehicle transient protection, the top end of the input range is 30V to 32V.
** The actual maximum available output power depends on several system factors. Refer to the MPS/100 User Manual for information on this.
*** The actual efficiency varies with input voltage. Refer to the MPS/100 User Manual for specific information on this.
Ordering options
The MPS/100 is usually manufactured on an OEM basis, with models built to customer's needs. The items listed below are some of the ordering options available.
| Option | Description |
|---|---|
| Intelligent power on/off control | The MPS/100 can be supplied with intelligent power on/off control. This function is not fitted as standard. Minimum order quantities apply. |
| Power Connectors | Each power connector can be either a vertical or right-angle connector. In addition, connectors can be fitted or not fitted. Minimum order quantities may apply. |
| Reverse polarity protection | Input reverse polarity protection is not fitted as standard. It is an order option. The MPS/100 uses a MOSFET instead of a diode, resulting in:
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| Fuse | The MPS/100 allows a PCB mount fuse to be fitted. A wire link is fitted as standard. A fuse can be supplied as an option. The customer needs to specify the fuse rating (our applications staff can provide guidance). Minimum order quantities may apply. |
| Vehicle transient suppressor | A 5kW transient suppressor is fitted as standard. This is for transient and load-dump protection. The transient suppressor results in a typical upper input voltage limit approximately 30VDC to 32VDC. The transient suppressor can be removed in non-vehicle applications. |
| Higher +12V output current | In 24V vehicle applications, where the +12V (and -12V) supply does not need to be maintained if the input voltage falls below 12V, the topology of the +12V regulator can be changed to provide high output currents, with typical efficiency of 97%. |
| No PC/104 connector | The MPS/100 can also be embedded in industrial equipment, which must be powered from +24VDC. In these applications the PC/104 connecter may not be required. The MPS/100 can be supplied without the PC/104 connector. Minimum order quantities apply. |
| OEM configurations | OEM configurations, with different performance characteristics. Minimum order quantities apply. |
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