International Rectifier Corporation

Infineon Technologies Americas Corp.

Dan Clavette

Eung San Cho

George J Schuellein

Mark Crowther

Dean Fernando

Tim Philips

Darryl Galipeau

Edvin Shehu

Peter Cheng

A semiconductor package includes a semiconductor die having a control transistor and a sync transistor, an integrated output inductor having a winding around a core, and coupled to the semiconductor die, where the winding includes a plurality of top conductive clips connected to a plurality of bottom conductive clips. The control transistor and the sync transistor are configured as a half-bridge. The integrated output inductor is coupled to a switched node of the half-bridge. At least one of the plurality of top conductive clips and the plurality of bottom conductive clips includes a partially etched portion and a non-etched portion. The semiconductor die is attached to the integrated output inductor by a die attach material. The semiconductor die and the integrated output inductor are encapsulated in a molding compound.

Semiconductor package with integrated output inductor using conductive clips

A dual power converter package is disclosed. The package includes a leadframe having a first control FET paddle configured to support a drain of a first control FET, and a second control FET paddle configured to support a drain of a second control FET. The leadframe further includes a sync FET paddle configured to support a source of a first sync FET and a source of a second sync FET, and a first plurality of contacts configured to receive control signals for each of the control FETs and each of the sync FETs from a driver integrated circuit (IC) external to the leadframe. The leadframe may additionally include first and second switched nodes, configured for electrical connection to the first control FET and the first sync FET via a first clip, and to the second control FET and the second sync FET via a second clip, respectively.

Power converter package using driver IC

Dual power converter package

In one implementation, a semiconductor package includes a first patterned conductive carrier including partially etched segments. The semiconductor package also includes a control FET having a control drain attached to a first partially etched segment of the first patterned conductive carrier. In addition, the semiconductor package includes a sync FET having a sync source and a sync gate attached to respective second and third partially etched segments of the first patterned conductive carrier. The semiconductor package further includes a second patterned conductive carrier having a switch node segment situated over a control source of the control FET and over a sync drain of the sync FET, as well as an inductor coupled between the switch node segment and an output segment of the second patterned conductive carrier.

Power converter package with integrated output inductor

An integrated dual power converter package is disclosed. The package includes a leadframe having a first control FET paddle configured to support a drain of a first control FET, and a second control FET paddle configured to support a drain of a second control FET. The leadframe further includes a sync FET paddle configured to support a source of a first sync FET and a source of a second sync FET, and a driver integrated circuit (IC) paddle configured to support a driver IC for controlling each of the control FETs and each of the sync FETs. The leadframe may additionally include first and second switched nodes, configured for electrical connection to the first control FET and the first sync FET via a first clip, and to the second control FET and the second sync FET via a second clip, respectively.

Integrated dual power converter package having internal driver IC

In one implementation, a semiconductor package includes a patterned conductive carrier including partially etched segments. The semiconductor package also includes a control FET having a control drain attached to a first partially etched segment of the patterned conductive carrier. In addition, the semiconductor package includes a sync FET having a sync source and a sync gate attached to respective second and third partially etched segments of the patterned conductive carrier. The semiconductor package further includes a heat spreading conductive plate situated over a control source of the control FET and over a sync drain of the sync FET so as to couple the control source and the sync drain to a switch node segment of the patterned conductive carrier.

Semiconductor package with switch node integrated heat spreader

According to one embodiment, a turbo circuit for increasing an output of a voltage regulator having a several power stages includes an activation sub-circuit coupled to a feedback signal of the voltage regulator, the activation sub-circuit being configured to generate a multi-stage ON signal for turning on the power stages substantially concurrently. The turbo circuit further comprises a deactivation sub-circuit coupled to the feedback signal, the deactivation sub-circuit being configured to cancel the multi-stage ON signal when the feedback signal reaches an extremum value. In one embodiment, the turbo circuit may be implemented in a multi-phase buck converter fabricated as part of an integrated circuit on a semiconductor die. In another embodiment, the turbo circuit can be implemented in a multi-phase boost converter as part of an integrated circuit on a semiconductor die.

Turbo circuit for providing voltage regulation and related method

A dual power converter package is disclosed. The package includes a leadframe having a first control FET paddle configured to support a drain of a first control FET, and a second control FET paddle configured to support a drain of a second control PET. The leadframe further includes a sync FET paddle configured to support a source of a first sync FET and a source of a second sync FET, and a first plurality of contacts configured to receive control signals for each of the control PETS and each of the sync FETs from a driver integrated circuit (IC) external to the leadframe. The leadframe may additionally include first and second switched nodes, configured for electrical connection to the first control FET and the first sync FET via a first clip, and to the second control PET and the second sync PET via a second clip, respectively.

Dual power converter package using external driver IC

Semiconductor package with low profile switch node integrated heat spreader

According to an exemplary embodiment, a monolithic power converter package includes a monolithic die over a substrate, the monolithic die integrating a driver integrated circuit (IC) with a control power transistor and a sync power transistor connected in a half-bridge. A high side power input, a low side power input, and a power output of the half-bridge are each disposed on a top surface of the monolithic die. The high side power input is electrically and mechanically coupled to the substrate by a high side power strip. Also, the low side power input is electrically and mechanically coupled to the substrate by a low side power strip. Furthermore, the power output is electrically and mechanically coupled to the substrate by a power output strip.

Monolithic power converter package

According to an exemplary embodiment, a monolithic power converter package includes a monolithic die over a substrate, the monolithic die integrating a driver integrated circuit (IC) with a control power transistor and a sync power transistor connected in a half-bridge. The high side power input and a power output of the half-bridge each are disposed on a top surface of the monolithic die. The high side power input is electrically coupled to the substrate through a high side power connection. The power output is electrically coupled to the substrate through a power output connection. The low side power input of the half-bridge comprises a plurality of through substrate vias that extend through the monolithic die to electrically connect a low side power pad to the monolithic die.

Monolithic Power Converter Package with Through Substrate vias

A buck converter for providing an output voltage to a load, including a plurality of output switch arrangements having respective output inductors coupled to an output capacitor, the switch arrangements being controllable to provide phase output currents to the output capacitor; a plurality of phase output arrangements respectively coupled to the output switch arrangements, the phase output arrangements being controllable to set the respective phase output currents supplied by the output switch arrangements; a phase control bus communicatively coupled to each of the phase output arrangements; and a phase control arrangement communicatively coupled to the phase control bus, the phase control arrangement being configured to control the phase output arrangements to set the respective phase output currents so that the output voltage approximates the desired voltage; wherein the phase control arrangement and the phase output arrangements are provided as respective integrated circuits.

Multi-phase buck converter

A power supply for powering an electrical load, the electrical load generating load characteristic data that determines a power supply characteristic to be provided to the electrical load from the power supply, the power supply comprising a voltage regulator for generating an output voltage to be provided as the input voltage for powering the electrical load, the voltage regulator being responsive to a reference signal for setting a characteristic of the power supply, and a control circuit for generating the reference signal for the regulator, the control circuit being responsive to the load characteristic data from the electrical load and to a selection input for selecting the type of electrical load from a plurality of electrical load types, whereby the selection input determines the type of electrical load to enable the load characteristic data to be evaluated by the control circuit to generate the reference signal for the regulator.

Growing community of inventors

Greene, RI, United States of America

Dan Clavette