LXE1686-0X Просмотр технического описания (PDF) - Microsemi Corporation
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LXE1686-0X Datasheet PDF : 15 Pages
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LXE1686-0x
INVERTER EVALUATION BOARD
LX1686 CONTROLLER FEATURES (CONT.)
• Digital brightness control: wide range dimming,
lamp current burst mode control
• Analog brightness control: limited dimming,
traditional lamp current amplitude control
• Reverse dimming control: positive or negative
control action
• Lamp current regulation input: operational error
amplifier
• Over-voltage sensing input: optional hardware
configurable for voltage and/or current
• Open lamp sensing input: open lamp detection and
strike mode activation
• Dual output FET gate driver: dual N-channel power
FET required
• Inverter enable/disable input: control inverter on/off
state, low off state sleep current
TABLE OF CONTENTS
1. What is included with the LXE1686-0x
2. Before getting started
3. Board Setup Procedure, Criteria and Options
4. Oscilloscope Waveform Pictures
5. PCB Layout Considerations
Appendix A: Board component Placement/Test
Points
Appendix B: Circuit Schematics
1. WHAT IS INCLUDED WITH YOUR LXE1686-0X?
The items in Table 1, 2 or 3 should have been
included when you received your version of the
LXE1686-0x depending on the output transformer
power requirements. If any of them are damaged or
missing, contact LINFINITY or the distributor from
which you received the kit for assistance. In order to
utilize the inverter evaluation kit you must provide
certain items. They are listed in Table 4.
TABLE 1. LXE1686-01 PACKING LIST
Item
No.
Quantity
Description
1
1
6.75” X 3.75” printed circuit board
with components installed
2
1
This LXE1686-01 evaluation guide
7WTransformer
Turns Ratio
3
1
SGE2692-1, or -3 85.0
4
1
SGE2641-1, or -3 47.2
5
1
SGE2643-1, or -3 42.5
6
1
SGE2642-1, or -3 38.6
7
1
SGE2648-1, or -3 30.4
TABLE 2. LXE1686-02 PACKING LIST
Item
No.
Quantity
Description
1
1
6.75” X 3.75” printed circuit board
with components installed
2
1
This LXE1686-02 evaluation guide
4W Transformer
Turns Ratio
3
1
SGE2687-1
80.0
4
1
SGE2688-1
61.5
5
1
SGE2686-1
50.0
6
1
SGE2689-1
42.1
7
1
SGE2681-1
36.4
TABLE 3. LXE1686-03 PACKING LIST
Item
No.
Quantity
Description
1
1
6.75” X 3.75” printed circuit board
with components installed
2
1
This LXE1686-03 evaluation guide
2.4WTransformer Turns Ratio
3
1
SGE2690-1
80.0
4
1
SGE2668-1
61.5
5
1
SGE2671-1
50.0
6
1
SGE2680-1
42.1
7
1
SGE2675-1
36.4
TABLE 4. EQUIPMENT YOU NEED IN YOUR LAB
Item
No.
Quantity
Description
Dual Variable Power Supply:
1
Source 1 3-5.5V @500mA
1
Source 2 Full range of system
power source @1A
Multiple channel oscilloscope:
2
1
1Mhz BW, 10mV or better
sensitivity.
DMM: 50V/2A range, 10mV/mA
3
1
sensitivity or better, optional AC
capability 500Khz BW.
Luminance Meter: 1 to 50K-unit
range, 0.25 unit sensitivity or
4
1
better
White scale capable, typical unit of
measurement, cd/m2 (nit).
AC current probe: 500Khz BW,
5
1
1mA to 10A range, 250uA
sensitivity or better.
High Voltage probe: 500Khz BW,
6
1
10kV, 10Megohm / 3pf loading or
better.
Connect leads for banana jacks
7
Various
or input cable with mate for Molex
53261-0890, flat blade
screwdriver for pots.
Copyright © 2000
Rev 1.0c, 2000-08-31
Page 3
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