公开(公告)号：IT1319841B1

公开(公告)日：2003-11-03

申请号：ITTO20000146

申请日：2000-02-15

Applicant: ST MICROELECTRONICS SRL

Inventor： ZANUCCOLI MAURO ,  CANEGALLO ROBERTO ,  DOZZA DAVIDE

IPC: H02M3/07

Abstract: A voltage boosting device having a charge pump circuit formed by a plurality of voltage boosting stages cascade-connected together. Each voltage boosting stage is connected to the adjacent stages via a first transfer node and a second transfer node and includes a storage capacitor connected at a terminal thereof to the second transfer node and receiving on the other terminal a first phase signal switching between a first value and a second value; a switch element including an NMOS transistor connected between the first transfer node and the second transfer node; a voltage boosting capacitor connected at a terminal thereof to the control terminal of the switch element and receiving on the other terminal a second phase signal; a first precharge circuit connected between the first transfer node and the control terminal of the switch element so as to control charge transfer from the first transfer node to the second transfer node when activated by a first activation signal; and a second precharge circuit connected between the second transfer node and the control terminal of the switch element so as to control charge transfer from the second transfer node to the first transfer node when activated by a second activation signal. The first activation signal and second activation signal are never active simultaneously.

公开(公告)号：DE60027706T2

公开(公告)日：2007-04-26

申请号：DE60027706

申请日：2000-02-15

Applicant: ST MICROELECTRONICS SRL

Inventor： ZANUCCOLI MAURO ,  CANEGALLO ROBERTO ,  DOZZA DAVIDE

IPC: H02M3/07

Abstract: The load pump booster device (1) with transfer and recovery of the charge comprises a charge pump circuit (2) with an output terminal (30.N) which is connected to a load capacitor (12) by means of a load node (50). In turn, the charge pump circuit (2) comprises a plurality of transfer transistors (15.0, ..., 15.j, ..., 15.N) which are connected to one another in series, and define a plurality of transfer nodes (30.0, ..., 30.j, ..., 30.N). Each transfer node (30.0, ..., 30.j, ..., 30.N) is connected to a storage capacitor (14.0, ..., 14.j, ..., 14.N). The booster device (1) also comprises a plurality of controlled switches (40.0, ..., 40.j, ..., 40.N) which are interposed between the said load node (50) and a respective transfer node (30.0, ..., 30.j, ..., 30.N), in order to connect to the said load node (50) a single one of the said transfer nodes (30.0, ..., 30.j, ..., 30.N). By this means, between the load capacitor (12) and the storage capacitors (14.0, ..., 14.j, ..., 14.N) there takes place a phase of transfer of charge followed by a phase of recovery of charge, from the storage capacitors (14.0, ..., 14.j, ..., 14.N) to the load capacitor (12).

公开(公告)号：DE60027706D1

公开(公告)日：2006-06-08

申请号：DE60027706

申请日：2000-02-15

Applicant: ST MICROELECTRONICS SRL

Inventor： ZANUCCOLI MAURO ,  CANEGALLO ROBERTO ,  DOZZA DAVIDE

IPC: H02M3/07

Abstract: The load pump booster device (1) with transfer and recovery of the charge comprises a charge pump circuit (2) with an output terminal (30.N) which is connected to a load capacitor (12) by means of a load node (50). In turn, the charge pump circuit (2) comprises a plurality of transfer transistors (15.0, ..., 15.j, ..., 15.N) which are connected to one another in series, and define a plurality of transfer nodes (30.0, ..., 30.j, ..., 30.N). Each transfer node (30.0, ..., 30.j, ..., 30.N) is connected to a storage capacitor (14.0, ..., 14.j, ..., 14.N). The booster device (1) also comprises a plurality of controlled switches (40.0, ..., 40.j, ..., 40.N) which are interposed between the said load node (50) and a respective transfer node (30.0, ..., 30.j, ..., 30.N), in order to connect to the said load node (50) a single one of the said transfer nodes (30.0, ..., 30.j, ..., 30.N). By this means, between the load capacitor (12) and the storage capacitors (14.0, ..., 14.j, ..., 14.N) there takes place a phase of transfer of charge followed by a phase of recovery of charge, from the storage capacitors (14.0, ..., 14.j, ..., 14.N) to the load capacitor (12).

公开(公告)号：ITTO20000146A1

公开(公告)日：2001-08-16

申请号：ITTO20000146

申请日：2000-02-15

Applicant: ST MICROELECTRONICS SRL

Inventor： ZANUCCOLI MAURO ,  CANEGALLO ROBERTO ,  DOZZA DAVIDE

IPC: H02M3/07

Abstract: A voltage boosting device having a charge pump circuit formed by a plurality of voltage boosting stages cascade-connected together. Each voltage boosting stage is connected to the adjacent stages via a first transfer node and a second transfer node and includes a storage capacitor connected at a terminal thereof to the second transfer node and receiving on the other terminal a first phase signal switching between a first value and a second value; a switch element including an NMOS transistor connected between the first transfer node and the second transfer node; a voltage boosting capacitor connected at a terminal thereof to the control terminal of the switch element and receiving on the other terminal a second phase signal; a first precharge circuit connected between the first transfer node and the control terminal of the switch element so as to control charge transfer from the first transfer node to the second transfer node when activated by a first activation signal; and a second precharge circuit connected between the second transfer node and the control terminal of the switch element so as to control charge transfer from the second transfer node to the first transfer node when activated by a second activation signal. The first activation signal and second activation signal are never active simultaneously.