# US 12,003,232 B2 · Switch circuit and power module

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- Number: US 12,003,232 B2
- Document ID: US12003232B2
- Status: Granted
- Kind: B2
- Application number: 18/370,063
- Filed: 2023-09-19
- Published: 2024-01-11
- Granted: 2024-06-04
- Earliest claimed: 2022-06-15
- Assignees: Delta Electronics, Inc.
- Applicants: Delta Electronics, Inc.
- Inventors: Boyi Zhang; Ruxi Wang; Peter Mantovanelli Barbosa
- Web page: https://patentgrep.com/patent/US12003232B2

## CPC

- H03K 17/687: the devices being field-effect transistors
- H02M 1/088: for the simultaneous control of series or parallel connected semiconductor devices
- H02M 3/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections}
- H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections}
- H03K 17/08142: {in field-effect transistor switches}
- H03K 17/122: {in field-effect transistor switches}
- H10W 44/501: {Inductive arrangements (H10W44/20 takes precedence)}
- H10W 90/00: Package configurations
- H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M)
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A switch circuit electrically connected to a power source and a first control source and including a plurality of switch bridge arms is provided. Each of the plurality of switch bridge arms includes a first switch and a second switch electrically connected in series. A loop formed by the first switch, the second switch and the power source is defined as a power loop. A loop formed by the first control source and the first switch is defined as a first control loop. A first mutual inductance is formed between the power loop and the first control loop. Among all the first switches, the first switch with the longer power loop has the smaller first mutual inductance.

## Claims

### Claim 1

A power module, comprising:
a first power pin and a second power pin, configured to receive a power;
a first control pin and a second control pin, configured to receive a first control signal; and
a plurality of switch bridge arms electrically connected in parallel, each comprising a first switch and a second switch electrically connected in series, wherein midpoints of the plurality of switch bridge arms are connected together, and each of the first switch and the second switch has a first terminal, a second terminal and a third terminal, wherein in each of the plurality of switch bridge arms, the first terminal, the second terminal and the third terminal of the first switch are electrically connected to the first power pin, the second control pin and the first control pin respectively, the first terminal and the second terminal of the second switch are electrically connected to the second terminal of the first switch and the second power pin respectively, a loop formed by the first power pin, the first switch, the second switch and the second power pin is defined as a power loop, a loop formed by the first control pin, the second terminal and the third terminal of the second switch, and the second control pin is defined as a first control loop, and a first mutual inductance is formed between the power loop and the first control loop,
wherein among all the first switches, the first switch with the longer power branch has the smaller first mutual inductance.

### Claim 2 (depends on 1)

The power module according to claim 1, further comprising a substrate, wherein the first power pin, the second power pin, the first control pin, the second control pin, and all the first and second switches are disposed on the substrate.

### Claim 3 (depends on 2)

The power module according to claim 2, wherein the substrate has a first edge and a second edge, the first edge is opposite to the second edge, the first power pin and the second power pin are disposed at the first edge, and the first control pin and the second control pin are disposed at the second edge.

### Claim 4 (depends on 1)

The power module according to claim 1, further comprising a third control pin and a fourth control pin configured to receive a second control signal, wherein in each of the plurality of switch bridge arms, the second terminal and the third terminal of the second switch are electrically connected to the fourth control pin and the third control pin respectively, a loop formed by the third control pin, the second terminal and the third terminal of the second switch, and the fourth control pin is defined as a second control loop, and a second mutual inductance is formed between the power loop and the second control loop,
wherein among all the second switches, the second switch with the longer power branch has the smaller second mutual inductance.

### Claim 5 (depends on 4)

The power module according to claim 4, wherein a value of the second mutual inductance is determined by a relative position between the power loop and the second control loop as well as loop area of the power loop and the second control loop.

### Claim 6 (depends on 1)

The power module according to claim 1, wherein a value of the first mutual inductance is determined by a relative position between the power loop and the first control loop as well as loop area of the power loop and the first control loop.

### Claim 7

A power module, comprising:
a first power pin and a second power pin, configured to receive a power;
a first control pin and a second control pin, configured to receive a first control signal; and
a plurality of switch bridge arms electrically connected in parallel, each comprising a first switch, a first interconnection conductor, a second switch, and a second interconnection conductor electrically connected in series sequentially, wherein midpoints of the plurality of switch bridge arms are connected together, and each of the first switch and the second switch has a first terminal, a second terminal, and a third terminal, wherein in each of the plurality of switch bridge arms, the first terminal and the second terminal of the first switch are electrically connected to the first power pin and a first terminal of the first interconnection conductor respectively, the first terminal and the second terminal of the second switch are electrically connected to a second terminal of the first interconnection conductor and a first terminal of the second interconnection conductor respectively, a second terminal of the second interconnection conductor is electrically connected to the second power pin, the third terminal of the first switch and the second terminal of the first interconnection conductor are electrically connected to the first control pin and the second control pin respectively, a loop formed by the first power pin, the first switch, the first interconnection conductor, the second switch, the second interconnection conductor and the second power pin is defined as a power loop,
wherein among all the first switches, the first switch with the longer power loop is electrically connected to the first interconnection conductor with smaller inductance.

### Claim 8 (depends on 7)

The power module according to claim 7, further comprising a substrate, wherein the first power pin, the second power pin, the first control pin, the second control pin, and all the first and second switches are disposed on the substrate.

### Claim 9 (depends on 8)

The power module according to claim 8, wherein the substrate has a first edge and a second edge, the first edge is opposite to the second edge, the first power pin and second power pin are disposed at the first edge, and the first control pin and the second control pin are disposed at the second edge.

### Claim 10 (depends on 7)

The power module according to claim 7, further comprising a third control pin and a fourth control pin configured to receive a second control signal, wherein in each of the plurality of switch bridge arms, the third terminal of the second switch and the second terminal of the second interconnection conductor are electrically connected to the third control pin and the fourth control pin respectively,
wherein among all the second switches, the second switch with the longer power loop is electrically connected to the second interconnection conductor with smaller inductance.

### Claim 11 (depends on 10)

The power module according to claim 10, wherein a loop formed by the third control pin, the second interconnection conductor, the second terminal and the third terminal of the second switch, and the fourth control pin is defined as a control loop, and a second mutual inductance is formed between the power loop and the control loop,
wherein among all the second switches, the second switch with the longer power loop has the smaller second mutual inductance.

### Claim 12 (depends on 7)

The power module according to claim 7, wherein a loop formed by the first control pin, the first interconnection conductor, the second terminal and the third terminal of the first switch, and the second control pin is defined as a control loop, and a first mutual inductance is formed between the power loop and the control loop,
wherein among all the first switches, the first switch with the longer power loop has the smaller first mutual inductance.