公开(公告)号：US09225238B2

公开(公告)日：2015-12-29

申请号：US14461780

申请日：2014-08-18

Applicant: STMicroelectronics International N.V.

Inventor： Laurent Chevalier

IPC: H02M3/07 ,  G05F3/02 ,  G06F3/16 ,  H02M1/00

CPC classification number: H02M3/07 ,  G05F3/02 ,  G06F3/165 ,  H02M2001/009 ,  H02M2003/071 ,  H02M2003/072

Abstract: A multi level charge pump circuit may be associated with at least two power supplies, and may provide at least four levels of positive and negative voltage. The multi level charge pump may include first and second fly capacitors, and first and second tank capacitors. A plurality of PMOS transistors and NMOS transistors may allow generation of two high voltage levels and two low voltage levels for the multi level charge pump, the low voltage levels being derived from a charging of the two fly capacitors in series. This multi level charge pump may be embodied in an audio device within a platform without a dedicated SMPS circuit.

Abstract translation: 多级电荷泵电路可以与至少两个电源相关联，并且可以提供至少四个正电压和负电压电平。 多级电荷泵可以包括第一和第二飞电电容器，以及第一和第二容性电容器。 多个PMOS晶体管和NMOS晶体管可以允许为多电平电荷泵产生两个高电压电平和两个低电压电平，低电压电平是从两个串联的两个电容器的充电得到的。 该多电平电荷泵可以体现在平台内的音频装置中，而不需要专用的SMPS电路。

公开(公告)号：US20150055805A1

公开(公告)日：2015-02-26

申请号：US14461780

申请日：2014-08-18

Applicant: STMicroelectronics International N.V.

Inventor： Laurent Chevalier

IPC: H02M3/07 ,  G06F3/16 ,  G05F3/02

CPC classification number: H02M3/07 ,  G05F3/02 ,  G06F3/165 ,  H02M2001/009 ,  H02M2003/071 ,  H02M2003/072

Abstract: A multi level charge pump circuit may be associated with at least two power supplies, and may provide at least four levels of positive and negative voltage. The multi level charge pump may include first and second fly capacitors, and first and second tank capacitors. A plurality of PMOS transistors and NMOS transistors may allow generation of two high voltage levels and two low voltage levels for the multi level charge pump, the low voltage levels being derived from a charging of the two fly capacitors in series. This multi level charge pump may be embodied in an audio device within a platform without a dedicated SMPS circuit.

Abstract translation: 多级电荷泵电路可以与至少两个电源相关联，并且可以提供至少四个正电压和负电压电平。 多级电荷泵可以包括第一和第二飞电电容器，以及第一和第二容性电容器。 多个PMOS晶体管和NMOS晶体管可以允许为多电平电荷泵产生两个高电压电平和两个低电压电平，低电压电平是从两个串联的两个电容器的充电得到的。 该多电平电荷泵可以体现在平台内的音频装置中，而不需要专用的SMPS电路。