SP4425QDS/12

SP4425Q Electroluminescent Lamp Driver

© Copyright 1998 Sipex Corporation

6

32 coil pulses per half cycle; 94% duty cycle.

EL1 Output

-EL2 Output

EL1 output; 32 charge steps per half cycle

EL1 Output

-EL2 Output

Differential representation (EL1-EL2)

V

=80V (typical)

PEAK

V = 160V

(typical)

PP

Figure 1. EL1 Output without QR1 and QR2

Figure 2. Voltage pulses released from the coil to the EL driver circuitry

Figure 3. EL1, EL2 Output without QR1 and QR2

Figure 4. Differential Representation of (EL1 - EL2) without QR1 and QR2