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1. 发明授权

US11139737B2 Regulator control integrated circuit having COT and valley current modes 有权
公开(公告)号：US11139737B2
公开(公告)日：2021-10-05
申请号：US16428900
申请日：2019-05-31
申请人： Active-Semi, Inc.
发明人： Masashi Nogawa
IPC分类号： H02M3/158 , H02M3/157 , H02M1/00 , H02M3/156
摘要： A voltage regulator control integrated circuit includes constituent parts including an error amplifier circuit, a comparator circuit, a compensation signal generator circuit, an oscillator/one-shot circuit, a latch, and a current sense circuit. In a first example, the integrated circuit is operable in a first mode and in a second mode. In the first mode, the various parts are configured and interconnected in such a way that they operate together as a valley current mode regulator control circuit. In the second mode, the various parts are configured and interconnected in such a way that they operate together as a current-mode constant on-time mode regulator control circuit. In another example, a voltage regulator control integrated circuit has the same basic constituent parts and is operable in a first mode as a peak current mode regulator control circuit, or in a second mode as a constant off-time time mode regulator control circuit.

2. 发明授权

US11002772B2 Using PCB temperature compensation trace to perform DCR current sensing in power supply circuitry 有权
公开(公告)号：US11002772B2
公开(公告)日：2021-05-11
申请号：US16036940
申请日：2018-07-17
申请人： Active-Semi, Inc.
发明人： Narasimhan Trichy
IPC分类号： G01R19/32 , G01R31/40 , G01R1/20
摘要： A system comprises an integrated circuit package, an inductor that is part of a power supply, and a printed circuit board (PCB) having a metal trace disposed directly below the inductor when viewed from a top-down perspective. The integrated circuit package includes a first terminal, a second terminal, and a novel inductor current detection and calibration circuit. The first terminal is coupled to a first end of the metal trace and the second terminal is coupled to a second end of the metal trace. During operation of the power supply, the novel circuit detects an OCP condition whereby an output current of the power supply exceeds an OCP level. The novel circuit detects the OCP condition in part by sensing a voltage across the metal trace. After calibration at room temperature, the novel circuit performs accurate OCP detection over a range of temperatures without using any temperature sensor near inductor.

3. 发明授权

US10790812B1 Gate driver to decrease EMI with shorter dead-time 有权
公开(公告)号：US10790812B1
公开(公告)日：2020-09-29
申请号：US15640505
申请日：2017-07-01
申请人： Active-Semi, Inc.
发明人： Thinh Ba Nguyen , Thien Khanh Luong , Thuc Huu Lam , Hue Khac Trinh
IPC分类号： H03K17/08 , H03K19/0185 , H03K19/0175 , H01L23/525 , H02M1/08 , H02M3/155
摘要： An integrated circuit includes a gate driver circuit that controls high side and low side transistors to operate in buck or boost mode. In buck operating mode, after switching off the low side transistor, the gate driver circuit controls the high side transistor in a constant current mode. After the low side transistor is disabled and no longer conducts current, then the gate driver circuit controls the high side transistor to operate in full-enhancement mode. In boost operating mode, after switching off the high side transistor, the gate driver circuit controls the low side transistor in a constant current mode. After the high side transistor is disabled, then the gate driver circuit controls the low side switching transistor to operate in full-enhancement mode. In both buck and boost operation, the gate driver circuit operates without dead time in which both the high side and low side transistors are off.

4. 发明授权

US10768244B2 Power loss protection integrated circuit with autonomous capacitor health check 有权
公开(公告)号：US10768244B2
公开(公告)日：2020-09-08
申请号：US16030865
申请日：2018-07-10
申请人： Active-Semi, Inc.
发明人： John H. Carpenter, Jr. , Brett E. Smith
IPC分类号： G01R31/64 , H01H85/02 , H02J9/06 , G01R31/3835 , G01R27/26 , G01R31/392 , H02M1/08 , H02M1/32 , H02M3/156 , H02M3/158 , G01R19/25 , G05B11/28 , G05B15/02 , G05F1/66 , H02H3/08 , H03M1/12 , H03M1/76 , H02M1/00
摘要： A power loss protection integrated circuit includes a storage capacitor terminal (STR), an autonomous capacitor health check circuit, and a capacitor fault terminal (CF). The capacitor health check circuit autonomously performs periodic capacitor check operations. In a check operation, current is sinked from the STR terminal for a predetermined time and in a predetermined way. If during this time the voltage on the STR terminal STR drops below a predetermined voltage, then a digital signal CF is asserted onto the CF terminal. Immediately following each capacitor check, a charging voltage is driven onto the STR terminal to recharge the external capacitors coupled to the STR terminal. In one example, the integrated circuit further includes a current switch circuit (eFuse) and a buck/boost controller. The capacitor health check circuit is only enabled during normal mode operation of the integrated circuit, and the check circuit disables boost operation during capacitor checks.

5. 发明授权

US09887628B1 Power loss protection integrated circuit 有权
公开(公告)号：US09887628B1
公开(公告)日：2018-02-06
申请号：US15640402
申请日：2017-06-30
申请人： Active-Semi, Inc.
发明人： John H. Carpenter, Jr. , Hiroshi Watanabe , Brett E. Smith
IPC分类号： H02M1/32 , H02M3/158 , H02M1/08 , H02M3/156 , H02M1/00
CPC分类号： H02M1/32 , G01R19/2513 , G01R31/362 , G05B11/28 , G05B15/02 , G05F1/66 , H01H85/0241 , H02H3/08 , H02J9/061 , H02M1/08 , H02M3/156 , H02M3/158 , H02M3/1582 , H02M3/1588 , H02M2001/0009 , H03M1/122 , H03M1/765
摘要： A power loss protection integrated circuit includes a current switch circuit (eFuse), a VIN terminal, a VOUT terminal, a buck/boost controller, and a storage capacitor terminal STR. The controller is adapted to work: 1) as a boost to take a low voltage from the VOUT terminal and to output a larger charging voltage onto the STR terminal, or 2) as a buck to take a higher voltage from the STR terminal and to buck it down to a lower voltage required on the VOUT terminal. The current switch circuit outputs a digital undervoltage signal (UV) and a digital high current signal (HC). These signals are communicated on-chip to the controller. Asserting UV causes the converter to begin operating in the buck mode. Asserting HC prevents the converter from operating in the boost mode.

6. 发明授权

US09806559B2 Reversible buck or boost converter that determines boost output current from sensed boost input current 有权
公开(公告)号：US09806559B2
公开(公告)日：2017-10-31
申请号：US14881944
申请日：2015-10-13
申请人： Active-Semi, Inc.
发明人： Hong Mao , Wei-Chung Wu
IPC分类号： H02J7/00 , H02J7/04 , H02M3/158 , H02J7/10
CPC分类号： H02J7/045 , H02J7/0068 , H02J7/0072 , H02J2007/0059 , H02J2007/10 , H02M3/1582
摘要： A reversible buck or boost converter is operable in a buck mode and in a boost mode. In the buck mode, the converter receives a supply voltage via an input terminal and generates a charging current that is supplied to a battery, thereby charging the battery. The supply voltage is also supplied through the converter to an output terminal. In a boost mode, the converter receives power form the battery and generates a supply current and voltage that is output onto the output terminal. The same single current sense resistor is used both to control the charging current in the buck mode and to control a constant current supplied to the output terminal in the boost mode. The output current is controlled to be constant, regardless of changes in the in the battery voltage and changes in the output voltage.

7. 发明授权

US09433047B2 Single inductor multiple LED string driver 有权
标题翻译：单电感多LED串驱动器
公开(公告)号：US09433047B2
公开(公告)日：2016-08-30
申请号：US12925059
申请日：2010-10-12
申请人： Steven Huynh , Cuong Van Pham
发明人： Steven Huynh , Cuong Van Pham
IPC分类号： H05B33/08
CPC分类号： H05B33/0827
摘要： A single inductor multiple LED string driver comprises a switch control circuit and a current-sensing control circuit. The switch control circuit generates a plurality of digital control signals that are used to control a plurality of switches coupled to a plurality of strings of LEDs. Each switch is selectively turned on and off by each corresponding digital control signal. The current-sensing control circuit determines an integrated charge amount provided by each current that flows from an input voltage through each LED string, through each switch, through a common inductor, and through a main switch to ground. In response to the determined integrated charge amount, the current-sensing control circuit generates an on-time control signal that controls the on-time of each switch such that the average current flowing across each LED string is equal to each other. Furthermore, the total current flowing across each LED string is regulated to a predefined value.
摘要翻译：单个电感器多LED串驱动器包括开关控制电路和电流感测控制电路。开关控制电路产生用于控制耦合到多个LED串的多个开关的多个数字控制信号。每个开关由每个对应的数字控制信号选择性地导通和关断。电流检测控制电路确定由从每个LED串的输入电压通过每个开关，通过公共电感器以及通过主开关接地的每个电流提供的积分电荷量。响应于所确定的积分充电量，电流感测控制电路产生一个导通时间控制信号，该导通时间控制信号控制每个开关的导通时间，使得流过每个LED串的平均电流彼此相等。此外，流过每个LED串的总电流被调节到预定义的值。

8. 发明授权

US09350245B2 Power management multi-chip module with separate high-side driver integrated circuit die 有权
公开(公告)号：US09350245B2
公开(公告)日：2016-05-24
申请号：US14664850
申请日：2015-03-21
申请人： Active-Semi, Inc.
发明人： Steven Huynh , Tsing Hsu
IPC分类号： H01L21/70 , H02M3/158 , H02P6/08 , H02M7/5387 , H02P6/14
CPC分类号： H02M3/158 , H02M7/5387 , H02P6/085 , H02P6/14 , Y10T29/41 , Y10T29/49002
摘要： A packaged device includes a first die, a second die, and specially spaced and positioned sets of package terminals. The first die includes a pulse-width modulator (PWM), a processor, a timer, high-side drivers, low-side drivers, and a fault protection circuit. The second die includes ultra-high voltage high-side drivers. In an ultra-high voltage application, the PWM and external circuitry together form a switching power supply that generates a high voltage. The high voltage powers external high-side transistors. The processor and timer control the ultra-high voltage high-side drivers, that in turn supply drive signals to the external high-side transistors through the package terminals. External low-side transistors are driven directly by low-side drivers of the first die. If the fault protection circuit detects an excessive current, then the fault protection circuit supplies a disable signal to high-side and low-side drivers of both dice. The disable signal is generated without execution of processor instructions.

9. 发明申请

US20150137610A1 Auto Load Switch Detection for Wireless Power Receiver 有权
标题翻译：无线电源接收器的自动负载开关检测
公开(公告)号：US20150137610A1
公开(公告)日：2015-05-21
申请号：US14086629
申请日：2013-11-21
申请人： ACTIVE-SEMI, INC.
发明人： James A. Kohout
IPC分类号： H02J5/00
CPC分类号： H02J50/12 , H02J5/005 , H02J7/025 , H02J50/40
摘要： Apparatus and methods are provided to automatically detect and control a load switch for a wireless power receiver. In one novel aspect, a method is provided to adaptively control the load switch based on the output condition of a rectified output according to a predefined criteria. In one embodiment of the invention, the methods to adaptively control the load switch comprises a first stage that turns on the load switch quickly; a second stage that stops turning on the load switch and holds the load switch at its current value; a third stage that slowly pulls down the load switch; and a fourth stage that quickly turns off the load switch. In another embodiment, an integrated circuit for a wireless power pick up unit is provided to control the load switch adaptively based on a rectified output feedback and a predefined criteria.
摘要翻译：提供装置和方法来自动检测和控制无线电力接收器的负载开关。在一个新颖的方面，提供了一种根据预定标准，根据整流输出的输出条件自适应地控制负载开关的方法。在本发明的一个实施例中，自适应地控制负载开关的方法包括：快速接通负载开关的第一级; 第二阶段停止接通负载开关并将负载开关保持在其当前值; 缓慢拉下负载开关的第三级; 以及快速关闭负载开关的第四级。在另一个实施例中，提供了一种用于无线电力拾取单元的集成电路，用于基于经整流的输出反馈和预定准则来自适应地控制负载开关。

10. 发明授权

US08892914B2 Programmable fault protect for processor controlled high-side and low-side drivers 有权
标题翻译：可编程故障保护，用于处理器控制的高边和低端驱动
公开(公告)号：US08892914B2
公开(公告)日：2014-11-18
申请号：US13454085
申请日：2012-04-24
申请人： Steven Huynh
发明人： Steven Huynh
IPC分类号： G06F1/00 , G06F1/32
CPC分类号： H05B33/0887 , G06F1/26 , H02M1/32 , H02M2001/0012 , Y02B20/341
摘要： A Multi-Tile Power Management Integrated Circuit (MTPMIC) includes a processor, a fault protect circuit, a first terminal, a driver that drives the first terminal, a second terminal, and detection circuitry that outputs a digital detection signal indicative of whether a predetermined condition is detected on the second terminal. The processor can program the fault protect circuit so that the fault protect circuit will later disable the driver as a function of multiple signals, including the digital detection signal. The function is programmable by the processor. In one example, if the detection circuitry detects the predetermined condition on the second terminal then the fault protect circuit disables all the high-side drivers and all low-side drivers of the MTPMIC independently of and without input from the processor.
摘要翻译：多瓦电源管理集成电路（MTPMIC）包括处理器，故障保护电路，第一终端，驱动第一终端的驱动器，第二终端和检测电路，其输出指示预定的在第二终端上检测到条件。处理器可对故障保护电路进行编程，使得故障保护电路随后将根据多个信号（包括数字检测信号）禁用驱动器。该功能由处理器编程。在一个示例中，如果检测电路检测到第二终端上的预定条件，则故障保护电路独立于处理器的输入而禁用MTPMIC的所有高侧驱动器和所有低侧驱动器。

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