IMP528 POWER MANAGEMENT High-Voltage EL Lamp Driver – 220 VPP Drive The IMP528 is an Electroluminescent (EL) lamp driver with the four EL lamp driving functions on-chip.
These are the switch-mode power supply, its high-frequency oscillator, the high-voltage H-bridge lamp driver and its low-frequency oscillator.
The IMP528 drives EL lamps of up to 50nF capacitance to high brightness; EL lamps with capacitances greater than 50nF can be driven, but will be lower in light output.
The typical regulated output voltage that is applied to the EL lamp is 220V peak-topeak.
The circuit requires few external components; a single inductor, single diode, two capacitors and two resistors.
Two of these res...

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