|
أهلا ،،
ولكن لدي سؤال ،،لم افهم ماذا تقصد بأن الأيسي تمكنك من التحكم في التيار ؟ ،، كيف ذلك ؟
شكرا ،،
|
من الداتا شيت
A common on-chip oscillator drives the dual chopper. It supplies pulses at the chopper rate which set
the two flip-flops FF1 and FF2. When the current in
a winding reaches the programmed peak value the
voltage across the sense resistor (connected to
one of the sense inputs SENS1 or SENS2) equals
Vref and the corresponding comparator resets its
flip flop, interrupting the drive current until the next
oscillator pulse arrives. The peak current for both
windings is programmed by a voltage divider on the
Vref input