I have the task of reworking a power supply board where the "mains" DC supply (8 to 30V) is switched by a "Panasonic ALFG2PF09" relay (33A, coil: 9V x 58 Ohms).
The relay is switched by the low-side solenoid/relay driver ("AMS-OSRAM AS1720B-ATDT" or "Panasonic IC3PWM") with start and hold profiles, PWM switching (approx. 60% duty cycle) and current limiting at 100 mA.
Unfortunately, these ICs are long "EOL" and I haven't yet found a replacement that meets all these characteristics, so I'm asking here.
Sims like DRV120 are the closest I can get, but highest Vin = 27V...
Any suggestion for a replacement for such an IC from TI's portfolio, even if not pin-compatible?
Maybe a similar solution that still uses this relay?
Or maybe a different solution using some kind of solid state device (e.g. MOSFET switch, ideal diode, etc.)?
Below is a snippet of this circuit block:
The circuit with Zener and MOSFETs prevents the relay from working when Vin < ~ 8V.
Pins "IE" and "IH" set the "start" and "hold" currents.
CON1 is a panel rocker switch.
