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Jupiter-MM-SIO
50 Watt DC/DC Power Supply with 2 Serial Ports
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Description |
Our new Jupiter-MM-SIO PC/104 DC/DC power supply improves on our popular Jupiter-MM product by adding two configurable serial ports. This board combines our JMM-512-V512 and 1/2 of our Emerald-MM-4M on a single board. This 2-in-1 design helps to further reduce cost and size of PC/104 embedded systems and provides a real benefit for air and ground vehicle applications requiring the greatest reduction in size and weight.
Output Power
JMM-SIO provides 50 watts of total output power with output voltages of +5, +12, -5, -12. Up to 10 amps can be provided on the +5 output, or the 50 watts of total power can be distributed across the 4 outputs. Input voltage range is 7 to 30VDC, making it suitable for use with both 12V and 24V systems.
No Heat Sink Required
Due to a new improved power supply circuit design, we've eliminated the heat sink, reducing the board's weight by 25% even with the additional serial port circuitry.
2 Serial Ports
JMM-SIO provides 2 serial ports that are jumper configurable for RS- 32, RS-422, or RS-485. Each port is independently configurable for type, address, and interrupt level. Both ports may share the same interrupt level if desired.
True PC/104 form factor
The low-profile SMT design fits completely within the PC/104 module specifications and guarantees that you can add other PC/104 modules on top of this board without any worries of mechanical interference. Simply stack your CPU and other cards on top or below the power supply module to provide power to your PC/104 system.
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I/O Connections |
JMM-SIO uses the same power I/O connectors as Jupiter-MM. Power input may be provided on a 2-pin detachable screw terminal or the 7-pin combination I/O power detachable screw terminal. Output voltages appear on the 7-pin screw terminal and on the PC/104 bus pins.
2-pin screw terminal connector
| Pin |
Description |
| 1 |
Input ground |
| 2 |
Input voltage |
7-pin combination screw terminal connector
| Pin |
Description |
| 1 |
Input voltage |
| 2 |
Input ground |
| 3 |
+12V output |
| 4 |
+5V output |
| 5 |
Output ground |
| 6 |
-5V output |
| 7 |
-12V output |
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Serial Port Configuration Options |
I/O Address Selection (Hex)
| Selection |
Port 1 |
Port 2 |
Status Register |
| 0 |
3F8 |
2F8 |
220 |
| 1 |
3E8 |
2E8 |
220 |
| 2 |
380 |
388 |
224 |
| 3 |
240 |
248 |
224 |
| 4 |
100 |
108 |
240 |
| 5 |
120 |
128 |
244 |
| 6 |
140 |
148 |
248 |
| 7 |
160 |
168 |
24C |
Interrupt Levels
Interrupt levels are individually selectable for each port. The available interrupt levels are 2, 3, 4, 5, 6, 7, 10, 11, 12, and 15. In addition, a 1K Ohm pulldown resistor is provided for each port.
A single interrupt level can be shared by both ports and can even be shared by more than one board in the system. To enable interrupt sharing, set both interrupt level jumpers to the same level and pull out one pulldown resistor jumper.
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Specifications |
| Input |
| Input voltage |
8-30VDC |
| Input ripple |
<100mV RMS |
| Transient protection |
1500W transient voltage suppressor |
| Transient cutoff |
31V nominal |
| Output |
| Output voltage/current |
See configuration table |
| Output protection |
Current limit/short circuit protection |
| Output ripple |
<50mV RMS (+5V output, 50% load) |
| Load regulation |
±3% |
| Efficiency |
80% to 92%, varies with load and input voltage |
| Serial Ports |
| Number of serial ports |
2 |
| Protocol |
Ports 1 and 2: RS-232, RS-422, RS-485 (jumper selected) |
| Maximum baud rate |
115kbps standard version
460.8kbps available (-HS option) |
| Communications |
parameters 5, 6, 7, or 8 data bits;
Even, odd, or no parity |
| Short circuit protection |
All outputs protected against continuous short circuit |
| RS-232 mode: |
| Input impedance |
3KΩ minimum |
| Input voltage swing |
±30V maximum |
| Output voltage swing |
±5V min, ±7V typical |
| RS-422, RS-485 modes: |
| Differential |
-0.2V min, +0.2V max input threshold |
| Input impedance |
12KΩ minimum |
| Input current |
+1.0µA max (VIN = 12V)
-0.8µA max (VIN = -7V) |
| Differential output voltage |
2.0V min (RL=50Ω) |
| High/low states differential output voltage symmetry |
0.2V maximum |
| Mechanical/Environmental |
| Size |
3.55" x 3.775" |
| PC/104 bus |
J1 (64 pins) and J2 (40 pins) stackthrough connectors installed |
| Operating temperature |
-40-85°C |
| Operating humidity |
5 to 95% non-condensing |
| Weight |
4.0 oz / 113g |
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Get an online quote |
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Jupiter-MM-SIO |
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| Jupiter-MM 50 Watt DC/DC power supply, 2 ch. RS-232/422/485, +/-5V/+/-12V/ Extended Temperature |
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Cables and accessories |
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| Dual DB9 male to 20-pin header 18" cable |
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