公开(公告)号：EP2983283B1

公开(公告)日：2018-03-28

申请号：EP15176704.3

申请日：2015-07-14

Applicant: STMicroelectronics S.r.l.

Inventor： Rapisarda, Andrea ,  Sammartano, Marco ,  Tumminaro, Salvatore

IPC: H02M3/335 ,  H03K17/16 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M3/33523 ,  H02M3/33576 ,  H02M2001/0035 ,  H03K17/162 ,  Y02B70/16

Abstract: Described herein is a power-supply circuit comprising a transformer (T) having at least one primary winding (T1) and one secondary winding (T2), an electronic switch (204) set on the primary side of the transformer (T) for selectively transferring energy through the primary winding (T1) to the secondary winding (T2), and an energy accumulator (Cout) set on the secondary side of the transformer (T), wherein the energy accumulator (Cout) is charged by means of the energy transferred to the secondary winding (T2). The power-supply circuit further comprises a monitoring circuit (48) configured for monitoring a signal (FB; V out ) on the secondary side of the transformer (T) and generating a feedback signal (R) as a function of the signal monitored (FB; V out ), and a transmission circuit (46) set on the secondary side of the transformer (T) and configured for selectively transferring energy from the energy accumulator (Cout) to the secondary winding (T2) in order to transmit the feedback signal (R). In particular, the transmission circuit (46) comprises: a) an electronic switch having a control terminal that drives switching of the switch; and b) a driver circuit for driving the electronic switch, wherein the driver circuit comprises a charge-accumulation capacitor connected to the control terminal of the switch, and a charge circuit configured for drawing energy from the secondary winding (T2) and charging the charge-accumulation capacitor by means of the energy drawn off.

公开(公告)号：EP2983283A1

公开(公告)日：2016-02-10

申请号：EP15176704.3

申请日：2015-07-14

Applicant: STMicroelectronics S.r.l.

Inventor： Rapisarda, Andrea ,  Sammartano, Marco ,  Tumminaro, Salvatore

IPC: H02M3/335 ,  H03K17/16 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M3/33523 ,  H02M3/33576 ,  H02M2001/0035 ,  H03K17/162 ,  Y02B70/16

Abstract: Described herein is a power-supply circuit comprising a transformer (T) having at least one primary winding (T1) and one secondary winding (T2), an electronic switch (204) set on the primary side of the transformer (T) for selectively transferring energy through the primary winding (T1) to the secondary winding (T2), and an energy accumulator (Cout) set on the secondary side of the transformer (T), wherein the energy accumulator (Cout) is charged by means of the energy transferred to the secondary winding (T2).
The power-supply circuit further comprises a monitoring circuit (48) configured for monitoring a signal (FB; V out ) on the secondary side of the transformer (T) and generating a feedback signal (R) as a function of the signal monitored (FB; V out ), and a transmission circuit (46) set on the secondary side of the transformer (T) and configured for selectively transferring energy from the energy accumulator (Cout) to the secondary winding (T2) in order to transmit the feedback signal (R).
In particular, the transmission circuit (46) comprises:
a) an electronic switch having a control terminal that drives switching of the switch; and
b) a driver circuit for driving the electronic switch, wherein the driver circuit comprises a charge-accumulation capacitor connected to the control terminal of the switch, and a charge circuit configured for drawing energy from the secondary winding (T2) and charging the charge-accumulation capacitor by means of the energy drawn off.

Abstract translation: 这里描述了一种电源电路，其包括具有至少一个初级绕组（T1）和一个次级绕组（T2）的变压器（T），设置在变压器（T）的初级侧上的电子开关（204），用于选择性地 将能量通过初级绕组（T1）传递到次级绕组（T2），以及设置在变压器（T）的次级侧上的蓄能器（Cout），其中通过能量对蓄能器（Cout）进行充电 转移到次级绕组（T2）。 电源电路还包括监视电路（48），其被配置用于监视变压器（T）的次级侧上的信号（FB; V out），并产生作为所监视信号的函数的反馈信号（R） FB; V out）以及设置在变压器（T）的次级侧上并被配置为选择性地将能量从能量累加器（Cout）传递到次级绕组（T2）的传输电路（46），以便传输反馈 信号（R）。 特别地，传输电路（46）包括：a）具有驱动开关切换的控制端子的电子开关; 以及b）用于驱动所述电子开关的驱动电路，其中所述驱动电路包括连接到所述开关的控制端子的电荷蓄积电容器和被配置为从所述次级绕组（T2）吸取能量并对所述电荷充电的充电电路 - 累积电容器通过所消耗的能量。

公开(公告)号：EP1990916B1

公开(公告)日：2012-04-11

申请号：EP08155068.3

申请日：2008-04-24

Applicant: STMicroelectronics S.r.l.

Inventor： Rapisarda, Andrea ,  Marino, Filippo ,  D'Arrigo, Angelo Maria

IPC: H03K4/502 ,  H03K7/06 ,  H03B23/00

CPC classification number: H03K7/06 ,  H03B23/00 ,  H04B15/02 ,  H04B2215/067