| 发明名称 | Negative reference voltage generating circuit and system thereof | ||
| 摘要 | A negative reference voltage generating circuit generating a negative reference voltage is provided, including a differential amplifier, a first diode, second diodes, and a third resistor. The differential amplifier includes a non-inverting input terminal, an inverting input terminal, and an output terminal, and is driven by a positive and a negative power voltages. The output terminal is connected with the non-inverting input terminal via a first resistor and connected with the inverting input terminal via a second resistor. The first diode includes a cathode connected with the non-inverting input terminal of the differential amplifier and an anode connected with a ground. The second diodes respectively include a cathode connected with a predetermined connection point and an anode connected with the ground, and are connected in parallel. The third resistor is connected between the connection point and the inverting input terminal of the differential amplifier. | ||
| 申请公布号 | US9397562(B1) | 申请公布日期 | 2016.07.19 |
| 申请号 | US201514718100 | 申请日期 | 2015.05.21 |
| 申请人 | Powerchip Technology Corporation | 发明人 | Arakawa Hideki;Ito Nobuhiko;Maeda Teruaki |
| 分类号 | H02M3/07;H02M3/156;G11C5/14;G05F3/26 | 主分类号 | H02M3/07 |
| 代理机构 | Jianq Chyun IP Office | 代理人 | Jianq Chyun IP Office |
| 主权项 | 1. A negative reference voltage generating circuit generating a negative reference voltage with a bandgap reference, the negative reference voltage generating circuit comprising: a differential amplifier comprising a non-inverting input terminal, an inverting input terminal, and an output terminal, wherein the differential amplifier is driven by a positive power voltage and a negative power voltage, and the output terminal is connected with the non-inverting input terminal via a first resistor and is connected with the inverting input terminal via a second resistor; a first diode comprising a cathode and an anode, wherein the cathode is connected with the non-inverting input terminal of the differential amplifier and the anode is connected with a ground; a plurality of second diodes each comprising a cathode and an anode, wherein the cathode is connected with a predetermined connection point and the anode is connected with the ground, and the second diodes are connected in parallel; and a third resistor connected between the predetermined connection point and the inverting input terminal of the differential amplifier. | ||
| 地址 | Hsinchu TW | ||