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. 发明授权

EP0528688B1 Fail safe level shifter 失效
标题翻译：可靠的电平转换电路
公开(公告)号：EP0528688B1
公开(公告)日：1997-11-12
申请号：EP92307589.9
申请日：1992-08-19
申请人： Nippon Motorola Ltd.
发明人： Yamamura, Norihisa , Hibino, Kazunori , Hayakawa, Tatsuo
IPC分类号： H03K19/0185 , H03K19/003 , H03K3/356
CPC分类号： H03K3/356017 , H03K3/356113

2. 发明公开

EP0529391A1 Voltage converter 失效
标题翻译： Spannungswandler。
公开(公告)号：EP0529391A1
公开(公告)日：1993-03-03
申请号：EP92113616.4
申请日：1992-08-10
申请人： Nippon Motorola Ltd.
发明人： Yamamura, Norihisa , Hibino, Kazunori , Okada, Kotaro
IPC分类号： H02M3/158 , H02M3/10
CPC分类号： H02M3/10 , H02M3/1584
摘要： A voltage converter for stably converting, even a low input voltage, to a predetermined output level is provided. The output of cell 20 is increased by first and second step-up circuits 21 and 22, and then smoothed by smoothing circuit 31. The output is converted by the first step-up circuit from the start of voltage conversion until a predetermined output voltage, and then converted by the second step-up converter thereafter. The output voltage of smoothing circuit 31 is compared against a first reference voltage by first comparator circuit 35, the output of which activates the integral circuit in second comparator circuit 37. The charge voltage of the integral circuit is compared to a sawtooth wave STW generated by oscillator circuit 43 to derive a signal for forcefully shutting down MOS transistor 29 in the second step-up circuit. On the other hand, a error voltage between the output of smoothing circuit 31 and a second reference voltage is amplified, followed by comparison with the sawtooth wave, and the resulting output is combined with the output of the second comparator circuit to control the pulse width of MOS transistor 29 for a desired output voltage.
摘要翻译：提供了用于稳定地将低输入电压转换到预定输出电平的电压转换器。单元20的输出由第一和第二升压电路21和22增加，然后由平滑电路31平滑。输出由第一升压电路从电压转换开始转换为预定的输出电压，然后由第二升压转换器转换。平滑电路31的输出电压与第一比较器电路35的第一参考电压进行比较，第一比较器电路35的输出激活第二比较器电路37中的积分电路。将积分电路的充电电压与锯齿波STW进行比较，振荡器电路43导出用于强制关闭第二升压电路中的MOS晶体管29的信号。另一方面，平滑电路31的输出和第二参考电压之间的误差电压被放大，随后与锯齿波进行比较，并且所得到的输出与第二比较器电路的输出相组合以控制脉冲宽度的MOS晶体管29用于期望的输出电压。

3. 发明公开

EP0528688A1 Fail safe level shifter 失效
标题翻译： Betriebssichere Pegelschieberschaltung。
公开(公告)号：EP0528688A1
公开(公告)日：1993-02-24
申请号：EP92307589.9
申请日：1992-08-19
申请人： Nippon Motorola Ltd.
发明人： Yamamura, Norihisa , Hibino, Kazunori , Hayakawa, Tatsuo
IPC分类号： H03K19/0185 , H03K19/003 , H03K3/356
CPC分类号： H03K3/356017 , H03K3/356113
摘要： A fail safe level shifter (30) assures that, when an input signal voltage level falls below a given threshold voltage, the output is either a constant high or no signal at all. Additionally, a range of digital high signals having a voltage less than the given threshold voltage may be shifted by the fail safe level shifter. The fail safe level shifter expands the width of an N-MOS channel of a conventional level shifter by placing two MOS switches (16, 17) in parallel. The resultant resistance allows the fail safe level shifter to register those high signals which are below the given threshold voltage. One-half of the level shifter has a N-MOS channel about one-half the width of a N-MOS channel in the other half of the level shifter. Therefore, the narrower half is unable to fully activate given the low input signals received. The fail safe level shifter thus assures that the output will be a constant high.
摘要翻译：故障安全电平转换器（30）确保当输入信号电压电平低于给定阈值电压时，输出完全为恒定高电平或无信号。此外，具有小于给定阈值电压的电压的一系列数字高信号可能被故障安全电平移位器移位。故障安全电平移位器通过并联放置两个MOS开关（16,17）来扩展传统电平移位器的N-MOS通道的宽度。所得到的电阻允许故障安全电平移位器寄存低于给定阈值电压的那些高信号。电平移位器的一半具有在电平移位器的另一半中的N-MOS沟道的宽度的大约一半的N-MOS沟道。因此，在接收的低输入信号时，较窄的一半无法完全启动。故障安全电平转换器因此确保输出为恒定高电平。

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