公开(公告)号：US20220172751A1

公开(公告)日：2022-06-02

申请号：US17534136

申请日：2021-11-23

Applicant: STMicroelectronics International N.V.

Inventor： Shivam KALLA ,  Vikas RANA

IPC: G11C5/14 ,  G11C11/56 ,  G11C16/30 ,  H03K5/24 ,  G05F3/26 ,  H02M3/07 ,  H02M1/00

Abstract: An integrated circuit includes a non-volatile memory, a charge pump that generates high voltages for programming operations of the non-volatile memory array, and a charge pump regulator that controls a slew rate of the charge pump. The charge pump regulator generates a sense current indicative of the slew rate and adjusts a frequency of a clock signal provided to the charge pump based on the sense current.

公开(公告)号：US20200235659A1

公开(公告)日：2020-07-23

申请号：US16715209

申请日：2019-12-16

Applicant: STMicroelectronics International N.V.

Inventor： Vikas RANA ,  Shivam KALLA

IPC: H02M3/07 ,  G11C5/14 ,  G11C16/30

Abstract: A charge pump circuit generates a charge pump output signal at a first node and is enabled by a charge pump control signal. A diode has first and second terminals coupled to first and second nodes. A comparator has an inverting input coupled to the second node and a non-inverting input coupled to a third node, and causes generation of the charge pump control signal. A first current mirror produces a first current at the second node, and a second current mirror produces a second current (equal in magnitude to the first current) at the third node. The first terminal and second terminals may be a cathode and an anode. The first current mirror may be a current sink sinking a first current from the second node. The second current mirror may be current source sourcing a second current (equal in magnitude to the first current) to the third node.

公开(公告)号：US20200235660A1

公开(公告)日：2020-07-23

申请号：US16742248

申请日：2020-01-14

Applicant: STMicroelectronics International N.V.

Inventor： Vikas RANA ,  Shivam KALLA

IPC: H02M3/07

Abstract: A charge pump circuit generates a charge pump output signal at a first node and is enabled by a control signal. A diode has an anode coupled to the first node and a cathode coupled to a second node. A current mirror arrangement sources a first current to the second node and sinks a second current from a third node. A comparator causes the control signal to direct the charge pump circuit to generate the charge pump output signal as having a voltage that ramps upwardly in magnitude (but negative in sign) if the voltage at the second node is greater than the voltage at the third node, and causes the control signal to direct the charge pump circuit to cease the ramping of the voltage of the charge pump output signal if the voltage at the second node is at least equal to the voltage at the third node.