专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明申请

US20110074375A1 Gate Driver in Buck Converters 有权
标题翻译：降压转换器中的栅极驱动器
公开(公告)号：US20110074375A1
公开(公告)日：2011-03-31
申请号：US12925199
申请日：2010-10-15
申请人： Bo Yang , Jason Zhang , Michael A. Briere
发明人： Bo Yang , Jason Zhang , Michael A. Briere
IPC分类号： G05F1/618
CPC分类号： H02M3/1588 , H02J7/0018 , H02J7/345 , Y02B40/90 , Y02B70/1466 , Y10T307/747
摘要： A circuit for driving a switching stage including control and sync switches series connected at a switching node, at least one of the control and sync switches being a normal ON depletion mode device, the circuit comprising a gate driver including first and second switching stages for generating gate drive signals for the sync and control switches, respectively, the first switching stage having a first driver output node and the second switching stage having a second driver output node, a signal from the first node driving the sync switch and a signal from the second node driving the control switch and a circuit connected to the first and second switching stages, the circuit including a first circuit providing a first voltage source, the first circuit being coupled to the first switching stage and to the sync switch, a first bias voltage from the first voltage source being switched by the first switching stage, the first switching stage having a first state wherein the sync switch is on, and a second state wherein the first bias voltage is switched to the gate of the sync switch to turn the sync switch off and a second circuit including a first energy storage device for charging with a second bias voltage, the second switching circuit having a first state, wherein the control switch is on when the sync switch is off and having a second state wherein the control switch is switched off when the sync switch is on by switching the second bias voltage to the gate of the control switch.
摘要翻译：一种用于驱动开关级的电路，包括连接在开关节点处的控制和同步开关串联，所述控制和同步开关中的至少一个是正常的导通耗尽型装置，所述电路包括栅极驱动器，所述栅极驱动器包括第一和第二开关级，用于产生分别具有用于同步和控制开关的栅极驱动信号，第一开关级具有第一驱动器输出节点，第二开关级具有第二驱动器输出节点，来自驱动同步开关的第一节点的信号和来自第二驱动器输出节点的信号节点驱动控制开关和连接到第一和第二开关级的电路，该电路包括提供第一电压源的第一电路，第一电路耦合到第一开关级和同步开关，第一偏置电压来自第一电压源由第一开关级切换，第一开关级具有第一状态，其中同步开关为o n和第二状态，其中第一偏置电压切换到同步开关的栅极以使同步开关断开，第二电路包括第二电路，第二电路包括用于以第二偏置电压充电的第一能量存储装置，第二开关电路具有第一状态，其中当同步开关关闭时，控制开关接通，并且具有第二状态，其中当同步开关接通时，通过将第二偏置电压切换到控制开关的门，控制开关被切断。

62. 发明授权

US07902809B2 DC/DC converter including a depletion mode power switch 有权
标题翻译： DC / DC转换器包括耗尽型电源开关
公开(公告)号：US07902809B2
公开(公告)日：2011-03-08
申请号：US11986848
申请日：2007-11-27
申请人： Michael A. Briere , Jason Zhang , Bo Yang
发明人： Michael A. Briere , Jason Zhang , Bo Yang
IPC分类号： H02M3/155
CPC分类号： H02M3/1588 , Y02B70/1466
摘要： A buck converter circuit is disclosed in which one or both of the control switch and the synchronous switch are III-nitride-based depletion mode. An enhancement mode switch is connected with one or both of the III-nitride based switches and operated to prevent conduction of current by the III-nitride based switch until all biases are established for proper operation.
摘要翻译：公开了一种降压转换器电路，其中控制开关和同步开关中的一个或两个是基于III族氮化物的耗尽模式。增强模式开关与III族氮化物基开关中的一种或两者连接，并且被操作以防止由III族氮化物基开关导通电流，直到建立所有偏压才能正常工作。

63. 发明授权

US07584371B2 POL system architecture with analog bus 有权
标题翻译： POL系统架构与模拟总线
公开(公告)号：US07584371B2
公开(公告)日：2009-09-01
申请号：US11389573
申请日：2006-03-17
申请人： Jason Zhang
发明人： Jason Zhang
IPC分类号： G06F1/26 , B23K11/24
CPC分类号： G05B19/0423 , G05B2219/21005 , H02M3/157 , H02M3/1584
摘要： A power control system and method including a plurality of point-of-load regulators (POL) providing corresponding regulated output voltages; a manager for communicating control signals and operational parameters with said point-of load regulators; a digital bus to carry control signals therebetween; and an analog bus to carry operational parameters therebetween. Analog sensing circuits and a mutliplexer on the POL communicate operational parameters to and from the manager via the analog bus and are controlled via the digital bus. The operational parameters include output voltage, output current, over voltage, temperature, amplifier or comparator offset, and amplifier gain. The analog sensing circuits are calibrated by trim registers on the POL under digital control by the manager.
摘要翻译：一种功率控制系统和方法，包括提供对应的调节输出电压的多个负载点调节器（POL）; 用于与所述负载点调节器通信控制信号和操作参数的管理器; 数字总线，用于在其间传送控制信号; 和一个模拟总线，用于在其间承载操作参数。模拟感测电路和POL上的多路复用器通过模拟总线向管理者传送和从管理器传送操作参数，并通过数字总线进行控制。操作参数包括输出电压，输出电流，过电压，温度，放大器或比较器偏移以及放大器增益。模拟感测电路由经理在数字控制下POL上的微调寄存器进行校准。

64. 发明申请

US20080224677A1 DEAD TIME TRIMMING IN A CO-PACKAGE DEVICE 审中-公开
标题翻译：在一个包装设备中的死时间修剪
公开(公告)号：US20080224677A1
公开(公告)日：2008-09-18
申请号：US12047796
申请日：2008-03-13
申请人： Kevin Kim , Jason Zhang , Todd Vacca
发明人： Kevin Kim , Jason Zhang , Todd Vacca
IPC分类号： G05F1/10
CPC分类号： H02M3/1588 , H02M1/38 , Y02B70/1466
摘要： A method of obtaining an optimized dead time for a synchronous switching power supply comprising a control IC and two series-connected switches, comprising packaging the control IC and the series-connected switches in a co-packaged module; providing a dead time delay circuit within the control IC circuit which has variable dead time; testing the switching power supply; varying the dead time in a defined sequence during the step of testing; monitoring a parameter during testing of the switching power supply as the dead time is varied; determining an optimal dead time based upon monitoring the parameter; and setting the dead time at the optimal dead time.
摘要翻译：一种获得包括控制IC和两个串联开关的同步开关电源的优化死区时间的方法，包括将控制IC和串联连接的开关封装在共同封装的模块中; 在具有可变死区时间的控制IC电路内提供死区延迟电路; 测试开关电源; 在测试步骤中以确定的顺序改变死区时间; 在死区时间变化时，在开关电源的测试期间监视参数; 基于监测参数确定最佳死区时间; 并将死区设置在最佳死区时间。

65. 发明授权

US06803750B2 Multiphase synchronous buck converter with improved output current sharing 有权
标题翻译：具有改善输出电流共享的多相同步降压转换器
公开(公告)号：US06803750B2
公开(公告)日：2004-10-12
申请号：US10406682
申请日：2003-04-03
申请人： Jason Zhang
发明人： Jason Zhang
IPC分类号： G05F1652
CPC分类号： H02M3/1584 , H02M3/1588 , Y02B70/1466
摘要： A multi-phase synchronous buck converter manufacturable using MCM architecture having improved output current sharing capability. The device is constructed of a plurality of single phase buck converter stages, and a sensing circuit for each converter stage to generate an output signal representative of the output current provided by that converter stage. A master controller provides duty cycle control signals in a predetermined phase relationship for the switching transistors of the individual converter stages according to the difference between the output voltage from the multi-phase converter and a reference signal representing a desired voltage at the output node. A duty cycle trimming controller which may include individual duty cycle trimming circuits coupled between the master controller and the drive circuits for each converter stage, modifies the duty cycle control signals from the master controller to equalize as nearly as possible the currents provided by each stage. A current sharing controller provides control signals to the duty cycle trimming controller. This functions to provide a difference signal between the actual current output of a particular stage and either the average of all the stage currents, the smallest stage current, or the largest stage current.
摘要翻译：具有改进的输出电流共享能力的使用MCM架构的多相同步降压转换器。该装置由多个单相降压转换器级构成，每个转换器级的感测电路产生表示由该转换器级提供的输出电流的输出信号。主控制器根据来自多相转换器的输出电压和表示输出节点期望电压的参考信号之间的差异，为各个转换器级的开关晶体管以预定的相位关系提供占空比控制信号。可以包括耦合在主控制器和用于每个转换器级的驱动电路之间的各个占空比微调电路的占空比修整控制器，修改来自主控制器的占空比控制信号，以尽可能地均衡每个级提供的电流。电流共享控制器向占空比修整控制器提供控制信号。这用于提供特定级的实际电流输出与所有级电流，最小级电流或最大级电流的平均值之间的差信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式