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12 September 2006 V104 Manual
Tri-M Engineering Tel: 800.665.5600, 604.945.9565
1407 Kebet Way, Unit 100 Fax: 604.945.9566
Port Coquitlam, BC V3C 6L3 E-mail: info@tri-m.com
Canada Web site: www.tri-m.com
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CHAPTER 1 - INTRODUCTION
1.1 GENERAL DESCRIPTION
The V104 multiple output DC to DC 25 watt converter is a versatile, “bullet-proof” unit that can be
supplied with as a +5V, outputs only or can include features such as Power Management, Universal
Battery Charger, AC Bus termination, +12V output, -5V output, -12V output and custom output
voltages from –42V to +42V. The V104, designed for embedded PC/104 computer systems, has a
wide input range of 8 to 30V (>6:1) and is ideal for battery or unregulated input applications or low
voltage AC inputs. The V104 is specifically designed for vehicular applications. It has heavy-duty
transient suppressors (5000W) that clamp the input voltage to safe levels, while maintaining normal
power operation. Battery, DC and AC input configurations from 8 to 30V are all handled by the V104
automatically.
The V104 is a “simple switcher” based design that provides outstanding line and load regulation with
efficiencies up to 80 percent. Organic Semi conductor capacitors provide filtering that reduces ripple
noises below 30mV. The low noise design makes the V104 ideal for applications wherever EMI or
RFI must be minimized. The +5VDC and +12VDC outputs are controlled by a constant off-time
current-mode architecture regulator, which provides excellent line and load transient response.
The +12VDC boost regulator uses the +5VDC as input power and therefore can operate without
dropout from 8 to 30V input and supply 1A.
A “plug-in” Universal Battery Charger (UBC104) is available for the V104 to charge Lead-Acid, NiCd
and NiMh batteries. Charge currents can be up to 1.5A and battery charging voltages from 8 to 30V.
The Power Management controller (PM104) allows timed on/off control of the V104, bus interrupts on
impending power failure, current limit setting and intelligent charge termination for the UBC104.
The V104 is provided in a PC/104 form factor compliant size, which includes the 8bit and 16bit
PC/104 expansion bus header. All generated voltages are provided to their related power supply pins
on the PC/104 expansion bus and are all also available for off-board use through a screw terminal
block. PC/104 AC bus termination is optionally available on the V104, which provides the cleanest
possible signals on the PC/104 bus.
The V104 can be configured to meet almost any power supply need for embedded PC/104
applications, whether that be a simple +5V application, providing power for back lighted LCD panels
or a full UPS (uninterruptible power supply configuration).