SP4424 Datasheet, PDF (6/12 Pages) Sipex Corporation – Electroluminescent Lamp Driver Dual Oscillators

V_PEAK=65V (typical)
EL1 output; charge steps per half cycle based on # of coil pulses per half cycle.
Figure 1. EL output voltage in discrete steps at EL1 output
coil
Number of coil pulses in lamp cycle = lamp freq. (2) ; 70% duty cycle.
Figure 2. Voltage pulses released from the coil to the EL driver circuitry
EL1 Output
Figure 3. EL voltage waveforms from the EL1 and EL2 outputs
-EL2 Output
EL1 Output
V_PP=160V
(typical)
-EL2 Output
Differential Representation (EL1-EL2).
Figure 4. EL differential output waveform of the EL1 and EL2 outputs
SP4424DS/16
SP4424 Electroluminescent Lamp Driver
6
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