18943172. OVERCURRENT PROTECTION CIRCUIT (ROHM CO., LTD.)
Contents
OVERCURRENT PROTECTION CIRCUIT
Organization Name
Inventor(s)
Shuntaro Takahashi of Kyoto (JP)
OVERCURRENT PROTECTION CIRCUIT
This abstract first appeared for US patent application 18943172 titled 'OVERCURRENT PROTECTION CIRCUIT
Original Abstract Submitted
In order both to accommodate instantaneous current as well as overcurrent protection in accordance with the load, an overcurrent protection circuit has: a threshold value generation unit that, in accordance with a threshold value control signal, switches between setting an overcurrent detection threshold value to a first set value (∝Iref) and a second set value (∝Iset) lower than the first set value; an overcurrent detection unit that compares a sense signal in accordance with the current being monitored and the overcurrent detection value and generates an overcurrent protection signal; a reference value generation unit that generates a reference value (∝Iset) in accordance with the seconds set value; a comparison unit that compares the sense signal and the reference value, and generates a comparison signal; and a threshold value control unit that monitors the comparison signal, and generates a threshold value control signal.
