VOLTAGE CONVERSION MODULE AND DC/DC VOLTAGE CONVERTER COMPRISING SUCH A VOLTAGE CONVERSION MODULE

The invention relates to a voltage conversion module (MCT) comprising a high-voltage terminal (BHT), a low-voltage terminal (BBT), a ground terminal (BM), an inductor (2081-3), a switching arm comprising a high-side switch (2021-3) and a low-side switch (2041-3) that are connected to each other at a mid-point (PM1-3), the switching arm being connected between the high-voltage terminal (BHT) and the ground terminal (BM), whereas the mid-point (PM1-3) is electrically connected to the low-voltage terminal (BBT) via said inductor (2081-3), and a device (500) for controlling the switches (2021-3, 2041-3), said voltage conversion module (MCT) being characterized in that it further comprises: a device (D1-3) for detecting failure of the high-side switch (2021-3), such as short-circuiting, which device comprises a voltage generator (G1-3) comprising two input terminals (b1, b2) and an output terminal (SG), said voltage generator (G1-3) being configured to receive on one of its input terminals (b2) the voltage of the mid-point (PM1-3), and on the other of its input terminals (b1) a first reference voltage (BT), said voltage generator (G1-3) being further configured to generate on its output terminal (SG) an increasing voltage (V1-3) from a predetermined voltage lower than a threshold value (VS) provided that the voltage of the mid-point (PM1-3) is higher than or equal to the first reference voltage (BT), and to generate a voltage (V1-3) lower than the threshold value (VS) in the contrary case; as well as a first voltage comparison module (CO1-3) configured to compare the voltage (V1-3) on said output terminal (SG) of the voltage generator (G1-3) to said threshold value (VS) and to generate an error signal (ST1-3) when said voltage on the output terminal is higher than said threshold value (VS). L'invention concerne un module de conversion de tension (MCT) comprenant une borne de haute tension (BHT), une borne de basse tension (BBT), une borne de masse (BM), une inductance (2081-3), un bras de commutation comportant un interrupteur de côté haut (2021-3) et un interrupteur de côté bas (2041-3) connectés l'un à l'autre en un point milieu (PM1-3), le bras de commutation étant connecté entre la borne de haute tension (BHT) et la borne de masse (BM),tandis que le point milieu (PM1-3) est connecté électriquement à la borne de basse tension (BBT) par l'intermédiaire de ladite inductance (2081-3), et un dispositif de commande (500) des interrupteurs (2021-3, 2041-3) ledit m