公开(公告)号：EP1162723A1

公开(公告)日：2001-12-12

申请号：EP00830411.5

申请日：2000-06-08

Applicant: STMicroelectronics S.r.l.

Inventor： Aiello, Natale ,  Macina, Francesco

IPC: H02M1/00

CPC classification number: G05F1/569 ,  H02M2001/0006 ,  Y10S323/901 ,  Y10S323/907

Abstract: The present invention refers to a current generator with thermal protection. In one of its embodiments the current generator (GC) with thermal protection having an input terminal (In) and an output terminal (OUT) comprising: a voltage generator (V); a first controlled switch (T1) having a control terminal applied to said voltage generator (V), a first terminal connected to said input terminal (IN), and a second terminal connected to a resistance (R); characterized by comprising: a second controlled switch (T2) having a control terminal coupled to said voltage generator (V), a first terminal connected to said resistance (R), and a second terminal connected to said output terminal (OUT); a temperature sensor (S) of said current generator (GC) able to measure the temperature of said generator (GC); a control circuit (D) of said second controlled switch (T2) able to open said second controlled switch (T2) in the case in which the temperature of said current generator (GC) overcomes a preset temperature.

Abstract translation: 本发明涉及具有热保护的电流发生器。 在其一个实施例中，具有热保护的电流发生器（GC）具有输入端（In）和输出端（OUT），包括：电压发生器（V）; 第一控制开关（T1），其具有施加到所述电压发生器（V）的控制端子，连接到所述输入端子（IN）的第一端子和连接到电阻器（R）的第二端子; 其特征在于包括：具有耦合到所述电压发生器（V）的控制端的第二控制开关（T2），连接到所述电阻（R）的第一端子和连接到所述输出端子（OUT）的第二端子。 所述电流发生器（GC）的温度传感器（S）能够测量所述发生器（GC）的温度; 在所述电流发生器（GC）的温度克服预设温度的情况下，所述第二控制开关（T2）的控制电路（D）能够打开所述第二受控开关（T2）。

公开(公告)号：EP1551097A1

公开(公告)日：2005-07-06

申请号：EP03425831.9

申请日：2003-12-31

Applicant: STMicroelectronics S.r.l.

Inventor： Librizzi, Fabrizio ,  Macina, Francesco

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M1/081 ,  H02M1/32 ,  H02M3/33592 ,  Y02B70/1475

Abstract: A power conversion device (10) is described, having:

a first and second input terminal (T1,T2), connected to a transformer winding (2), and at least an output terminal (OUT),
at least a first and second synchronous rectifier (SR1,SR2), associated to the first and second input terminals (T1,T2) respectively;
at least an inductor (L1) comprised in an output stage and inserted between the first input terminal (T1) and the output terminal (OUT);
a driving circuit (3) having at least a first and second output terminal (N4,N5) connected to respective control terminals of the first and second synchronous rectifiers (SR1,SR2).

Advantageously according to the invention, the power conversion device comprises an adjustable threshold control block (4) inserted between the device first and second input terminal (T1,T2) and connected to the inductor (L1), the control block (4) being enabled on the low level of a control signal (OUTGate1) on the first output terminal (N4) of the driving circuit (3).
A control method of a synchronous rectifier comprised in a power conversion device is also described.

Abstract translation: 的电力转换装置（10）所描述的，具有：第一和第二输入端子（T1，T2），连接到变压器绕组（2），以及至少输出端子上（OUT），至少一个第一和第二同步 整流器（SR1，SR2）相关联，以分别在第一和第二输入端子（T1，T2）; 至少在电感器（L1）包括在输出级和所述第一输入端子（T1）和所述输出端子（OUT）之间的插入; （3）具有至少一个驱动电路的第一和第二输出端（N4，N5），连接到respectivement所述第一和第二同步整流器的控制端子（SR1，SR2）。 有利地雅丁本发明，可调节的阈值控制块的功率转换装置包括（4）插入所述装置的第一和第二输入端子（T1，T2）之间并连接到所述电感器（L1），所述控制块（ 4）在所述第一输出端子的驱动电路（3（N4））上的控制信号（OUTGate1）的低电平被启用。 由此描述的功率转换装置包括一个同步整流器的控制方法。