I'm doing a project on driving a solenoid valve in BOSCH. The input is a
0-10V sine wave (Which is actually an output from a D/A converter) and
it is to be converted to a PWM signal of 300Hz with 0-100% range
dutycycle. This duty cycle is to be used to inject current to drive a
solenoid valve. For 100% dutycycle, the current should be ideally 1.4A
to close the valve completely.

Would using a micro controller give a more accurate PWM signal?
That wasn't clear from what you wrote.

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