CURRENT MIRROR CIRCUIT AND DRIVING METHOD THEREFOR

WIPO Patent Application WO/2018/133374

A1

A current mirror circuit and a driving method therefor, the current mirror circuit comprising a first transistor (M1) and a second transistor (M2) which are connected in series, and a third transistor (M3) and a fourth transistor (M4) which are connected in series. The circuit also comprises: a reference voltage source (VDD), a fifth transistor (M5), and a control module (01) connected between the reference voltage source (VDD) and the fifth transistor (M5). The third transistor (M3) and the fourth transistor (M4) form a current mirror with the first transistor (M1) and the second transistor (M2) so as to generate a mirror current at the drain of the third transistor (M3) according to a current source (Iin) coupled to the drain of the first transistor (M1); the control module (01) is used for controlling the fifth transistor (M5) to work in a linear region, thereby biasing the gates of the first transistor (M1) and the third transistor (M3) and the gates of the second transistor (M2) and the fourth transistor (M4) respectively using the fifth transistor (M5) working in the linear region as a resistor, so that the wide-swing output of the current mirror may be achieved without adding additional power consumption, and the reliability of the current mirror may be improved.

JP2006217282

LOAD CONTROL CIRCUIT

WANG TANGXIANG (CN)

PCT/CN2017/095509

July 26, 2018

August 01, 2017

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BOE TECHNOLOGY GROUP CO LTD (CN)

G05F3/26

CN101071312B	2010-04-21
US4471292A	1984-09-11
CN101464700A	2009-06-24
CN202362694U	2012-08-01
US20040124904A1	2004-07-01
US20090160557A1	2009-06-25

See also references of EP 3572905A4
None

LIU, SHEN & ASSOCIATES (CN)

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