Abstract: A stacked die power converter package includes a lead frame including a die pad and a plurality of package pins, a first die including a first power transistor switch (first power transistor) attached to the die pad, and a first metal clip attached to one side of the first die. The first metal clip is coupled to at least one package pin. A second die including a second power transistor switch (second power transistor) is attached to another side on the first metal clip. A controller is provided by a controller die attached to a non-conductive layer on the second metal clip on one side of the second die.

Abstract: Control logic for producing a digital input to a digital-to-analog converter (DAC) in a power converter system. The control logic selects from among a plurality of slew rates during a transition of an output voltage in response to a change in the desired setpoint, so that the output voltage transition follows a desired nominal slew rate. In an initial interval of the transition, a steeper slew rate than the nominal slew rate is selected by the control logic for the digital input to the DAC, until the digital input to the DAC exceeds the nominal slew rate by a first parameter value. At that point, a slew clamp is applied to advance the digital input at the nominal slew rate. Upon the digital input approaching the setpoint value to within a second parameter value, a flatter slew rate than nominal is applied.

Abstract: A stacked die power converter package includes a lead frame including a die pad and a plurality of package pins, a first die including a first power transistor switch (first power transistor) attached to the die pad, and a first metal clip attached to one side of the first die. The first metal clip is coupled to at least one package pin. A second die including a second power transistor switch (second power transistor) is attached to another side on the first metal clip. A controller is provided by a controller die attached to a non-conductive layer on the second metal clip on one side of the second die.

Abstract: A converter for a multi-phase current network can include a plurality of current sensors, each of the plurality of current sensors being configured to detect current for a respective phase of the multi-phase network. A current averaging circuit is configured to provide an indication of the average current for the multi-phase network based on the current detected by each of the plurality of current sensors. A modulator is configured to modulate at least one phase of the multi-phase network independently of each other phase of the multi-phase network based on a difference between the current detected for the at least one phase and the average current for the multi-phase network.

Abstract: A converter for a multi-phase current network can include a plurality of current sensors, each of the plurality of current sensors being configured to detect current for a respective phase of the multi-phase network. A current averaging circuit is configured to provide an indication of the average current for the multi-phase network based on the current detected by each of the plurality of current sensors. A modulator is configured to modulate at least one phase of the multi-phase network independently of each other phase of the multi-phase network based on a difference between the current detected for the at least one phase and the average current for the multi-phase network.

Abstract: A method and system for automatically providing termination to a SCSI I/O bus within a data processing system is disclosed. An inline terminator is provided for use within a data processing system. The inline terminator provides a connection between a first controller and an I/O bus utilizing a plurality of connection pins including a device removal detection pin. The inline terminator includes a terminator circuit and a control circuit coupled to the device removal detection pin to detect whether the controller and bus are connected. In one embodiment, the detection pin is a short ground pin on the SCSI bus that is not associated with a signal or differential signal pair. The terminator circuit is activated when the controller and bus are disconnected and deactivated otherwise to automatically terminate the I/O bus.

Abstract: Aspects for sensing faults in a redundant power converter are described. An exemplary circuit aspect includes a signal transition monitor for monitoring signal transitions at a predetermined node within the redundant power converter, and a detector for detecting a fault condition in the redundant power converter when a proper signal transition fails to occur during a base period of switching. The aspects sense faults in a manner which allows replacement during a scheduled downtime, so that redundancy is restorable without having an unscheduled outage.

Abstract: Aspects for reporting faults in a redundant power converter are described. An exemplary method aspect includes monitoring at least one node within the redundant power converter. The method further includes tracking values of the at least one node during a predetermined time period, and predicting when a specification of the redundant power converter will be exceeded based on the tracked values.

Abstract: Aspects for isolating faults in a redundant power converter are described. An exemplary system aspect includes a first switch at an input of the redundant power converter for protecting the redundant power converter from a high input voltage, and a second switch coupled within the redundant power converter prior to an output capacitor, wherein efficiency of fault isolation is improved.

Abstract: A linear voltage regulator for regulating the voltage and current in a DC supply is described. The invention includes current and voltage sense elements. The outputs from the sensed elements are summed together as the gate input to an FET pass transistor which regulates the power supplied. The two feedback loops provide high bandwidth and improve dynamic response.