A gate driver includes a low-voltage circuit configured to be actuated by application of a first voltage and a high-voltage circuit configured to be actuated by application of a second voltage that is higher than the first voltage. The gate driver also includes a transformer and a capacitor connected in series to the transformer. The low-voltage circuit and the high-voltage circuit are connected by the transformer and the capacitor and configured to transmit a signal through the transformer and the capacitor.

A gate driver configured to apply a drive voltage signal to a gate of a switching element includes a low-voltage circuit chip and a high-voltage circuit chip. The low-voltage circuit chip includes a low-voltage circuit configured to be actuated by application of a first voltage. The high-voltage circuit chip includes a high-voltage circuit configured to be actuated by application of a second voltage that is higher than the first voltage. The gate driver further includes multiple transformer chips connected in series to each other. The low-voltage circuit chip and the high-voltage circuit chip are connected by the multiple transformer chips and configured to transmit a signal through the multiple transformer chips.

A system in a vehicle includes a first fuse connected between a power source and a load. The first fuse is an electronic fuse (eFuse) to disconnect the load from the power source via the first fuse based on opening a first fuse switch. The system also includes a second fuse connected between the power source and the load via a second fuse switch. The first fuse and the second fuse are part of a cluster of fuses. A controller opens the first fuse switch and keeps the second fuse switch closed based on the vehicle entering a key-off mode in which the vehicle is turned off.

A system in a vehicle includes a first fuse connected between a power source and a load. The first fuse is an electronic fuse (eFuse) to disconnect the load from the power source via the first fuse based on opening a first fuse switch. The system also includes a second fuse connected between the power source and the load via a second fuse switch. The first fuse and the second fuse are part of a cluster of fuses. A controller opens the first fuse switch and keeps the second fuse switch closed based on the vehicle entering a key-off mode in which the vehicle is turned off.

An apparatus includes a capacitor coupled to a gate of a power switch, and a negative voltage adjustment device connected to a common node of the capacitor and the gate of the power switch, wherein the negative voltage adjustment device is configured such that after a turn-off signal is applied to the gate of the power switch, a voltage across the capacitor is maintained at a predetermined voltage level through a negative current provided by the negative voltage adjustment device.

A post-driver with low voltage operation and electrostatic discharge protection. In one embodiment, a post-driver structure includes a drive unit including a pull-up driver and a pull-down driver, a pad connected to an external resistance, and an output node connected between the pull-up driver and the pull-down driver, the output node configured to connect to a comparator for impedance calibration of the drive unit. The post-driver structure also includes an operational amplifier connected to a first transistor and the pad in a closed loop configuration, the operational amplifier further connected to a second transistor to form a current mirror circuit between the operational amplifier and the drive unit, wherein the current mirror circuit replicates a voltage at the pad with a voltage at the output node for the impedance calibration.

A post-driver with low voltage operation and electrostatic discharge protection. In one embodiment, a post-driver structure includes a drive unit including a pull-up driver and a pull-down driver, a pad connected to an external resistance, and an output node connected between the pull-up driver and the pull-down driver, the output node configured to connect to a comparator for impedance calibration of the drive unit. The post-driver structure also includes an operational amplifier connected to a first transistor and the pad in a closed loop configuration, the operational amplifier further connected to a second transistor to form a current mirror circuit between the operational amplifier and the drive unit, wherein the current mirror circuit replicates a voltage at the pad with a voltage at the output node for the impedance calibration.

An integrated circuit die forming method, for forming a plurality of integrated circuit dies on a semiconductor wafer, comprising: forming a first device, a second device in a first die in a first area; forming a metal layer connected to the first device and the second device; forming a third device, a fourth device in a second die in a second area; forming the metal layer connected to the third device and the fourth device, wherein a scribe area exists between the first area and the second area is separated by; wherein the first device and the third device are used for synchronization and are components of a class D amplifier; wherein the second device is used for preventing leakage currents of the first die and the fourth device is used for preventing leakage currents of the second die.

An integrated circuit die forming method, for forming a plurality of integrated circuit dies on a semiconductor wafer, comprising: forming a first device, a second device in a first die in a first area; forming a metal layer connected to the first device and the second device; forming a third device, a fourth device in a second die in a second area; forming the metal layer connected to the third device and the fourth device, wherein a scribe area exists between the first area and the second area is separated by; wherein the first device and the third device are used for synchronization and are components of a class D amplifier; wherein the second device is used for preventing leakage currents of the first die and the fourth device is used for preventing leakage currents of the second die.

An apparatus includes a differential input pair, a first resistor, a second resistor, and a comparator. The differential input pair having first and second differential inputs. The first differential input is adapted to be coupled to an output of a controller and the second differential input is adapted to be coupled to a signal ground of the controller. The first resistor is adapted to be coupled to a third resistor via the first differential input to form a first voltage divider. The second resistor is adapted to be coupled to a fourth resistor via the second differential input to form a second voltage divider. The comparator having first and second comparator inputs. The first comparator input is coupled between the first resistor and the first differential input. The second comparator input is coupled between the second resistor and the second differential input.