PowerBox Defense Series Manual

Table of Contents

1. Assembling and Installation Method ......................................................... 1
1.1 Mounting method ................................................................................... 1
1.2 Isolation from conductive enclosure.................................................... 2
1.3 Installation to fulfil EMC requirement .................................................. 2
2. Derating ........................................................................................................... 2
2.1 Derating curve by input voltage ............................................................ 2
2.2 Temperature measuring point .............................................................. 2
3. Wiring .............................................................................................................. 3
3.1 Wiring input connector .......................................................................... 3
3.2 Wiring output terminal ........................................................................... 3
3.3 Wiring function connector ..................................................................... 3
3.4 Jumper factory setting ........................................................................... 3
3.5 Output ripple and ripple noise measurement .................................... 4
4. Functions ........................................................................................................ 4
4.1 Input voltage range ................................................................................. 4
4.2 Inrush current limiting ............................................................................ 4
4.3 Over current protection .......................................................................... 4
4.4 Over voltage protection .......................................................................... 4
4.5 Thermal protection ................................................................................. 4
4.6 Output voltage adjustment .................................................................... 4
4.7 Remote ON/OFF ..................................................................................... 5
4.8 Remote sensing ....................................................................................... 6
4.9 Adjustable constant current range ...................................................... 7
4.10 Power good (PG) ................................................................................... 7
5. Series / Parallel Operation ........................................................................... 8
5.1 Series operation ...................................................................................... 8
5.2 Parallel operation .................................................................................... 8
5.3 Redundancy operation ......................................................................... 10
6. Life Expectancy and Warranty ................................................................... 10
6.1 Life Expectancy ..................................................................................... 11
6.2 Warranty ................................................................................................. 11
7. Options .......................................................................................................... 11
7.1 Option -O: with Active ORing .............................................................. 11
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POWERBOX Defense Line
OFD1200A Series
1200W Single output
AC/DC Baseplate power supply

1. Assembling and Installation Method

1.1 Mounting method

OFD1200A series should be mounted to a heatsink or enclosure which
has sufficient thermal capacity to be cooled by conduction cooling.
OFD1200A has 12 of 4.5mm diameter mounting holes, to keep
uniform thermal conductivity, use all holes as shown in Fig. 1.1.
Fig. 1.1 Mounting hole requirement
A thermal interface material such as thermal pads or thermal grease
shall be used to ensure proper cooling of the power supply.
OFD1200A28 and OFD1200A48 without option -O (Active ORing),
and OFD1200A65 have open holes in the aluminium baseplate. When
using grease as thermal interface material, it could flow to the inside of
unit. This is not dangerous, but not desirable. We recommended to not
apply grease closer than 10mm from these holes. See Fig. 1.2 for
location of open holes.
Location of open holes
Fig. 1.2 The Location of open hole on aluminium baseplate (Bottom
view)
Remarks:
- There are no open holes in the aluminium baseplate on some
models. Please refer to Table 1.1 to clarify the differences.
Table 1.1 Holes on the baseplate by models
Model
OFD1200A12-N
OFD1200A28-NO
OFD1200A28-N
OFD1200A48-NO
OFD1200A48-N
OFD1200A65-N
1
Specifications are subject to change without notice.
20mm
23.5mm
Holes
No holes
No holes
Holes
No holes
Holes
Holes
PBSE10273731A 2023.10-11