Power converter including integrated driver providing overcurrent protection
AssigneeInfineon Technologies Americas Corp.
InventorsAlberto Guerra, Sergio Morini, Marco Giandalia
Life of this patent
Estimating the term…
Abstract
In one implementation, a power converter includes an output stage integrated circuit (IC) in a group III-V die including a depletion mode group III-V transistor, and a driver IC in a group IV die. The driver IC is configured to drive the output stage IC. In addition, a group IV control switch in the group IV die is cascoded with the depletion mode group III-V transistor. The power converter further includes an overcurrent protection circuit for the depletion mode group III-V transistor, the overcurrent protection circuit monolithically integrated in the group IV die.
Claims20
A power converter comprising:
- an output stage integrated circuit (IC) in a group III-V die including a depletion mode group III-V transistor;
- a driver IC in a group IV die for driving said output stage IC;
- a group IV control switch in said group IV die cascoded with said depletion mode group III-V transistor;
- an overcurrent protection circuit for said depletion mode group III-V transistor, said overcurrent protection circuit monolithically integrated in said group IV die;
- wherein said overcurrent protection circuit is in parallel with said group IV control switch.
A power converter comprising:
- an output stage integrated circuit (IC) including a high side depletion mode group III-V transistor and a low side depletion mode group III-V transistor monolithically integrated in a group III-V die;
- a driver IC in a group IV die for driving said output stage IC;
- a high side group IV control switch in said group IV die cascoded with said high side depletion mode group III-V transistor;
- a low side group IV control switch in said group IV die cascoded with said low side depletion mode group III-V transistor;
- a high side overcurrent protection circuit for said high side depletion mode group III-V transistor, wherein said high side overcurrent protection circuit is in parallel with said high side group IV control switch;
- a low side overcurrent protection circuit for said low side depletion mode group III-V transistor, wherein said low side overcurrent protection circuit is in parallel with said low side group IV control switch;
- said high side and low side overcurrent protection circuits monolithically integrated in said group IV die.
A power converter comprising:
- an output stage integrated circuit (IC) in a group III-V die including a depletion mode group III-V transistor;
- a driver IC in a group IV die for driving said output stage IC;
- an overcurrent protection circuit for said depletion mode group III-V transistor, said overcurrent protection circuit monolithically integrated in said group IV die;
- wherein said overcurrent protection circuit is in parallel with said group IV control switch;
- a group IV control switch in said group IV die cascoded with said depletion mode group III-V transistor, such that said depletion mode group III-V transistor operates as an enhancement mode group III-V transistor.
Dependencies are inferred from the claim text.