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EL552.256-Q2
6 EL552.256-Q2 Operations Manual (OM410-00)
DC/DC Converter (Power Supply)
The display comes with the PS512-6, which is an efficient multiple-output DC-to-
DC switching power supply assembly. The power supply provides the unique
voltage requirements for EL displays. Its input voltages are +12V only or both
+12V and +5V.
A square-pin jumper (J4) is provided to select between
these two input configurations and is in the +5V
position when the product is shipped.
The following table shows the input voltage for the PS512-6 power supply for the
+12V and the +12V/+5V configurations.
Table 3. Power Supply Input Voltages
+12V and +5V Input
Description
Name
Min.
Max.
Units
Input voltage: nom. = 12.0 V
VH
10.8
13.2
VDC
Input voltage: absolute max.
VH max
---
15.0
VDC
Input current: max.
IH max
---
0.9
A
Input voltage: nom. = 5.0 V
VL
4.75
5.25
VDC
Input voltage: absolute max.
VI max
---
7.5
VDC
Input Current max
IL max
---
0.1
A
+12V Only Input
Description
Name
Min.
Max.
Units
Input voltage: nom. = 12.0 V
VH
10.8
13.2
VDC
Input voltage: absolute max.
VH max
---
15.0
VDC
Input current: max.
IH max
---
1.0
A
Interface Information
This Planar EL display incorporates an interface that is similar to many LCD
interfaces. This interface is supported by a variety of off-the shelf chip sets which
take care of all display control functionality, freeing the system processor for other
tasks. Designers should select the chip set that best suits their particular
architecture and price point.
Video Input Signals
The VS signal may be independently set to a CMOS low level at any time for
longer than one frame period. During the time of VS inactivity the display is
blank. Halting VS results in a standby condition to minimize power usage.
Default Jumper Setting
INT.EXT.