4
Introduction
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, reverse battery hookup
protection and output short circuit shutdown with automatic recovery. The output voltage
is easily adjusted 1.0 volts above or below the standard output voltage. An output overvolt-
age crowbar circuit protects devices connected to the converter. The VTC615 Series Voltage
Converter supplies either 12, 24, 32 or 48 VDC from a 24, 36, 48 or 72 VDC power source.
Other input or output voltages up to 72 volts are also available by special order. High quality
digital meters can be added (factory option) to allow monitoring of output current and output
voltage.
Specifications
Input Voltages
Nominal (ip)
24
36
48
72
Actual
** 20 – 35
**30-45
** 40 – 60
** 65 – 90
Input Amps (max)
39.5
27.1
20.3
12.6
Input Fuse
3 x ATC-15
2 x ATC-15
1 x ATC-25
1 x ATC-20
Output Voltages
Nominal (op)
12
24
48
Actual
13.6 ± 0.05V
27.2 ± 0.05V
54.4 ± 0.05V
Output Adjustment
± 1.0 Volts
Output Amps (cont)
0 - 40
0 - 20
0 - 10
Output Amps (max)
45
25
12.5
Output Crowbar
16.0 ± 0.5 V
32 ± 1.0 V
63.9 ± 2.0 V