Title: Double ring low differential voltage linear voltage stabilizer circuit
Application Number: 200610124852 Application Date: 2006.10.25
Publication Number: 1949121 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G05F1/56
Applicant(s) Name: Huazhong Sci. Address:
Inventor(s) Name: Zong Xuecheng;Liu Zhenglin;Zhang Kefeng;Lei Jianmi
Attorney & Agent: caobao jing
Abstract:
    The invention discloses double ring low voltage difference linear voltage regulator circuit. It includes error amplifier, secondary amplifier, power tube, compensating unit, output sampling network, load capacitance and load circuit, feed-forward amplifier, pull-up driving tube, pull-down driving tube, and sampling tube. It includes two loop circuits that the main one includes the error amplifier, secondary amplifier, pull-up driving tube, power tube, and output sampling network which form negative feedback loop to stably output voltage VOUT; the additional one includes feed-forward amplifier, sampling tube, pull-down driving tube, and power tube which refer to output voltage, form feed back loop to dynamically compensate circuit and further stably output voltage VOUT, and refer to load current, form positive feedback loop to increase load step change for the response circuit. The invention can supply better transient response, periphery circuit selecting, and phase margin for the circuit.
Time: 4