BACK BIAS VOLTAGE GENERATOR OF A SEMICONDUCTOR DEVICE TO REDUCE THE DUMPING OF A BACK BIAS VOLTAGE CURVE

摘要

PURPOSE: A back bias voltage generator of a semiconductor device is provided to secure reliability by making a back bias voltage with a negative value which is approximate to a back bias voltage target level in an initial power-up process.;CONSTITUTION: A first level detector unit(100) activates a first detection signal until an applied external voltage reaches a preset level. A second level detector unit(200) detects a back bias voltage and activates a second detection signal according to the detection result. An enable signal generating unit(300) activates a pump enable signal if one of the first and second detection signals is activated. A charge pump(400) pumps the back bias voltage according to the pump enable signal.;COPYRIGHT KIPO 2013;[Reference numerals] (100) First level detector unit; (200) Second level detector unit; (400) Charge pump