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    POWER DEVICE INCLUDING LATERAL INSULATED GATE BIPOLAR TRANSISTOR (LIGBT) AND MANUFACTURING METHOD THEREOF
    3.
    发明申请
    POWER DEVICE INCLUDING LATERAL INSULATED GATE BIPOLAR TRANSISTOR (LIGBT) AND MANUFACTURING METHOD THEREOF 有权

    公开(公告)号：US20210305242A1

    公开(公告)日：2021-09-30

    申请号：US17142154

    申请日：2021-01-05

    Applicant: RICHTEK TECHNOLOGY CORPORATION

    Inventor： Chih-Feng Huang ,  Lung-Sheng Lin

    IPC: H01L27/07 ,  H01L29/739 ,  H01L29/66 ,  H01L29/872 ,  H01L21/8249

    Abstract: A power device which is formed on a semiconductor substrate includes: plural lateral insulated gate bipolar transistors (LIGBTs) and a forward conductive unit. The plural LIGBTs are connected in parallel to each other. The forward conductive unit is connected in parallel to the plural LIGBTs. The forward conductive unit consists of a PN diode and a Schottky diode connected in parallel to each other. The PN diode and the Schottky diode share a same N-type region, a reverse terminal, an N-type extension region, an field oxide region, a gate, and a P-type well in an epitaxial layer. The N-type region and the P-type well form a PN junction, wherein the PN junction has a staggered comb-teeth interface from top view. A metal line extends on the staggered comb-teeth interface and alternatingly contacts the N-type region and the P-type well.

    Control circuit for AC-DC power converter
    4.
    发明授权
    Control circuit for AC-DC power converter 有权
    AC-DC电源转换器控制电路

    公开(公告)号：US09048732B2

    公开(公告)日：2015-06-02

    申请号：US14294789

    申请日：2014-06-03

    Applicant: Richtek Technology Corporation

    Inventor： Yi-Wei Lee ,  Chih-Feng Huang ,  Kuo-Chin Chiu

    IPC: H02M7/217 ,  H02M7/537 ,  H01L29/808 ,  H02M7/00 ,  H01L29/06

    CPC classification number: H02M7/217 ,  H01L29/0692 ,  H01L29/808 ,  H02M7/003 ,  H02M7/537

    Abstract: A control circuit for an AC-DC power converter includes a junction field effect transistor (JFET), a first resistor, a second resistor, and a third resistor. The JFET includes a substrate, a drain, a source, a gate, a first oxide layer, and a second oxide layer. The first oxide layer is attached to a region located between the drain and the gate of the JFET, and the second oxide layer is not attached to a region located between the drain and the gate of the JFET. The first resistor is positioned on the first oxide layer, and the second resistor and the third resistor are positioned on the second oxide layer. When the JFET and the first resistor receive an input power signal, the first, the second, and the third resistors divide the input power signal, and prevent from the breakdown of the first oxide layer and the second oxide layer.

    Abstract translation: 用于AC-DC电力转换器的控制电路包括结型场效应晶体管（JFET），第一电阻器，第二电阻器和第三电阻器。 JFET包括衬底，漏极，源极，栅极，第一氧化物层和第二氧化物层。 第一氧化物层附接到位于JFET的漏极和栅极之间的区域，并且第二氧化物层未附接到位于JFET的漏极和栅极之间的区域。 第一电阻器位于第一氧化物层上，第二电阻器和第三电阻器位于第二氧化物层上。 当JFET和第一电阻器接收输入功率信号时，第一，第二和第三电阻器分割输入功率信号，并防止第一氧化物层和第二氧化物层的击穿。

    INTELLIGENT POWER MODULE
    7.
    发明申请
    INTELLIGENT POWER MODULE 有权

    公开(公告)号：US20220406691A1

    公开(公告)日：2022-12-22

    申请号：US17561968

    申请日：2021-12-26

    Applicant: Richtek Technology Corporation

    Inventor： Lung-Sheng Lin ,  Chih-Feng Huang

    IPC: H01L23/495 ,  H01L23/31

    Abstract: An intelligent power module, which includes: a lead frame; a plurality of signal processing chips, disposed on the lead frame; at least one bridge die, configured to operably transmit signals among the signal processing chips; and a package structure, encapsulating the lead frame, the signal processing chips and the bridge die.

    Driver circuit for improving utilization rate of LED device and related constant current regulator
    8.
    发明授权
    Driver circuit for improving utilization rate of LED device and related constant current regulator 有权
    驱动电路，用于提高LED器件及相关恒流调节器的利用率

    公开(公告)号：US09084327B2

    公开(公告)日：2015-07-14

    申请号：US13789325

    申请日：2013-03-07

    Applicant: Richtek Technology Corporation

    Inventor： Kuo-Chin Chiu ,  Chih-Feng Huang

    IPC: H05B33/08

    CPC classification number: H02M3/158 ,  G05F1/16 ,  G05F3/16 ,  H05B33/083 ,  H05B33/0851 ,  H05B33/0854

    Abstract: A driver circuit for driving an LED array is disclosed. The LED array includes a first, a second, a third, a fourth LED device and a diode device. The second LED device is connected to the first LED device. The fourth LED device is connected to the third LED device. The diode device is connected between the second LED device and the third LED device. The driver circuit includes a first constant current regulator for coupling between the first and the second LED device; a second constant current regulator for coupling between the second and the third LED device; a third constant current regulator for coupling between the third and the fourth LED device; a fourth constant current regulator for coupling between the fourth LED device and a fixed-voltage terminal; and a control circuit coupled with the first, the second, the third, and the fourth constant current regulators.

    Abstract translation: 公开了一种用于驱动LED阵列的驱动电路。 LED阵列包括第一，第二，第三，第四LED器件和二极管器件。 第二LED装置连接到第一LED装置。 第四LED装置连接到第三LED装置。 二极管器件连接在第二LED器件和第三LED器件之间。 驱动器电路包括用于在第一和第二LED器件之间耦合的第一恒流调节器; 用于耦合在所述第二和第三LED器件之间的第二恒流调节器; 用于耦合在第三和第四LED器件之间的第三恒流调节器; 用于在第四LED器件和固定电压端子之间耦合的第四恒流调节器; 以及与第一，第二，第三和第四恒定电流调节器耦合的控制电路。

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