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US 12,015,028 B2Granted
Transistor module and its associated semiconductor module
AssigneeHangzhou Kiwi Instruments Corporation
InventorBo Zhang
Life of this patent
Estimating the term…
Abstract
A transistor module including a first transistor and a second transistor for start up control is provided. Wherein the first end of the first transistor is coupled to the first end of the second transistor, the second end of the first transistor is coupled to the control end of the second transistor, and the second end of the second transistor provides a start up current for a control circuit.
Claims5
A transistor module, comprising:
- a first transistor having a first end, a second end and a control end;
- and
- a second transistor configured to provide start up current for a control circuit, the second transistor having a first end, a second end and a control end, wherein the first end of the first transistor is coupled to the first end of the second transistor, the second end of the first transistor is coupled to the control end of the second transistor, and the second end of the second transistor is configured to provide the start up current, wherein:
- at start up stage, the first transistor is in OFF state, and the second transistor is in ON state;
- and
- at operation stage, the first transistor is in operation state, and the second transistor is in OFF state, and
- wherein the transistor module is manufactured on a semiconductor substrate to form a semiconductor chip, wherein the semiconductor chip has four pins, and wherein a first pin of the semiconductor chip is coupled to the first end of the first transistor and the first end of the second transistor, a second pin of the semiconductor chip is coupled to the second end of the first transistor and the control end of the second transistor, a third pin of the semiconductor chip is coupled to the control end of the first transistor and a fourth pin of the semiconductor chip is coupled to the second end of the second transistor.
4 more elements
A transistor module, comprising:
- a first transistor having a first end, a second end and a control end;
- and
- a second transistor configured to provide start up current for a control circuit, the second transistor having a first end, a second end and a control end, wherein the first end of the first transistor is coupled to the first end of the second transistor, the second end of the first transistor is coupled to the control end of the second transistor, and the second end of the second transistor is configured to provide the start up current, wherein:
- (i) at start up stage, the first transistor is in OFF state, and the second transistor is in ON state;
- and
- (ii) at operation stage, the first transistor is in operation state, and the second transistor is in OFF state, and
- further comprising a third transistor for providing a current sensing signal to the control circuit, wherein the third transistor has a first end coupled to the first end of the first transistor, a control end coupled to the control end of the first transistor, and a second end coupled to the second end of the first transistor through a resistor, and the second end of the third transistor is used to provide the current sensing signal;
- further wherein the transistor module is manufactured on a semiconductor substrate to form a semiconductor chip, and the semiconductor chip having:
- a first pin coupled to the first end of the first transistor, the first end of the second transistor and the first end of the third transistor;
- a second pin coupled to the second end of the first transistor, one end of the resistor and the control end of the second transistor;
- a third pin coupled to the control end of the first transistor;
- a fourth pin coupled to the second end of the second transistor;
- and
- a fifth pin coupled to the second end of the third transistor and the other end of the resistor.
11 more elements
Dependencies are inferred from the claim text.