专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20120013367A1 Power stage control circuit 有权
标题翻译：功率级控制电路
公开(公告)号：US20120013367A1
公开(公告)日：2012-01-19
申请号：US12932617
申请日：2011-03-01
申请人： Yu-Chang Chen , Pei-Lun Huang , Li-Di Lo
发明人： Yu-Chang Chen , Pei-Lun Huang , Li-Di Lo
IPC分类号： H03K5/153
CPC分类号： H02H7/1213 , H02H3/24
摘要： The present invention discloses a power stage control circuit including: a driver circuit for controlling a power stage according to an error amplified signal; an error amplifier circuit for comparing a feedback voltage at a feedback terminal with a reference signal to generate the error amplified signal; a current generator circuit coupled to the feedback terminal for generating a fault detection current flowing to the feedback terminal; and a feedback terminal short detection circuit for generating a fault signal to stop the operation of the power stage when the feedback voltage is smaller than a short-circuit threshold voltage or when the fault detection current is larger than a short-circuit threshold current.
摘要翻译：本发明公开了一种功率级控制电路，包括：驱动电路，用于根据误差放大信号控制功率级; 误差放大器电路，用于将反馈端的反馈电压与参考信号进行比较，以产生误差放大信号; 耦合到反馈端的电流发生器电路，用于产生流向反馈端的故障检测电流; 以及反馈端短路检测电路，用于当反馈电压小于短路阈值电压时或者当故障检测电流大于短路阈值电流时，产生故障信号以停止功率级的运行。

2. 发明申请

US20110279930A1 Switching regulator control circuit 有权
标题翻译：开关稳压器控制电路
公开(公告)号：US20110279930A1
公开(公告)日：2011-11-17
申请号：US12928540
申请日：2010-12-14
申请人： Hung-Lin Lin
发明人： Hung-Lin Lin
IPC分类号： H02H9/02 , H02H7/10
CPC分类号： H02M1/32 , H02H7/12 , H02M3/33507
摘要： The present invention discloses a switching regulator control circuit which distinguishes the output short-circuit condition, which imposes immediate danger, from other mild over current conditions. The switching regulator control circuit includes: an over current judgment circuit comparing a current sense signal with a current limit to generate an over current indication signal; a time comparison circuit comparing the over current indication signal with a clock signal to generate an output short-circuit indication signal; and a timer receiving the over current indication signal and the output short-circuit indication signal, wherein when the output short-circuit indication signal does not indicate output short-circuit, the timer counts a first time period, and when the output short-circuit indication signal indicates output short-circuit, the timer counts a second time period shorter than the first time period, for better safety protection.
摘要翻译：本发明公开了一种开关调节器控制电路，其将来自其他轻度过电流条件的即时危险的输出短路状况区分开。开关稳压器控制电路包括：过电流判断电路，将电流检测信号与电流限制进行比较，以产生过电流指示信号; 时间比较电路，将过电流指示信号与时钟信号进行比较，生成输出短路指示信号; 以及接收过电流指示信号和输出短路指示信号的定时器，其中当输出短路指示信号不指示输出短路时，定时器计数第一时间段，并且当输出短路指示信号表示输出短路，定时器计数比第一个时间段短的第二个时间段，以便更好的安全保护。

3. 发明申请

US20120262203A1 Power supply input voltage detection circuit 失效
标题翻译：电源输入电压检测电路
公开(公告)号：US20120262203A1
公开(公告)日：2012-10-18
申请号：US13373271
申请日：2011-11-09
申请人： Hsin-Yi Wu , Chih-Feng Huang
发明人： Hsin-Yi Wu , Chih-Feng Huang
IPC分类号： H03K5/153
CPC分类号： H03K5/153
摘要： The present invention discloses a power supply input voltage detection circuit. The power supply converts an input voltage to an output voltage by a transformer which includes a primary winding and a secondary winding. The primary winding is coupled to a power switch, which receives a switching signal to adjust the output voltage. The power switch is coupled to a sensing circuit; when the power switch turns ON, the sensing circuit generates a current sense signal according to current through the primary winding. The input voltage detection circuit includes: a rising time detection circuit, which detects a period, of time during which the current sense signal rises from a low reference level to a high reference level to generate a timing signal; and a determination circuit, which generates a determination signal according to the timing signal for determining whether the input signal is a high voltage or a low voltage.
摘要翻译：本发明公开了一种电源输入电压检测电路。电源通过包括初级绕组和次级绕组的变压器将输入电压转换为输出电压。初级绕组耦合到电源开关，其接收切换信号以调节输出电压。电源开关耦合到感测电路; 当电源开关接通时，感测电路根据通过初级绕组的电流产生电流检测信号。输入电压检测电路包括：上升时间检测电路，其检测电流检测信号从低参考电平上升到高参考电平的时间段，以产生定时信号; 以及确定电路，其根据用于确定输入信号是高电压还是低电压的定时信号产生确定信号。

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