发明名称 |
DC-DC converter and organic light emitting display device including the same |
摘要 |
a DC-DC converter, including a conversion unit configured to convert a battery voltage input to an input terminal of the DC-DC converter into a first voltage, and to output the first voltage to an output terminal of the DC-DC converter, a feedback voltage generation unit configured to generate a feedback voltage by dividing the first voltage, an error amplifier (AMP) configured to supply, to a pulse width modulation (PWM) control circuit, an error signal indicating a voltage difference between the feedback voltage and a reference voltage, the PWM control circuit being configured to control the conversion unit, corresponding to the error signal, thereby changing the first voltage, and a reference voltage supply unit configured to supply the reference voltage to the error AMP, and to change the reference voltage. |
申请公布号 |
US9614441(B2) |
申请公布日期 |
2017.04.04 |
申请号 |
US201514622720 |
申请日期 |
2015.02.13 |
申请人 |
Samsung Display Co., Ltd. |
发明人 |
Park Sung-Chun |
分类号 |
G09G3/3233;H02M3/158;G09G3/3258 |
主分类号 |
G09G3/3233 |
代理机构 |
Lewis Roca Rothgerber Christie LLP |
代理人 |
Lewis Roca Rothgerber Christie LLP |
主权项 |
1. A DC-DC converter, comprising:
a conversion unit configured to convert a battery voltage input to an input terminal of the DC-DC converter into a first voltage, and to output the first voltage to an output terminal of the DC-DC converter; a feedback voltage generation unit configured to generate a feedback voltage by dividing the first voltage; an error amplifier (AMP) configured to supply, to a pulse width modulation (PWM) control circuit, an error signal indicating a voltage difference between the feedback voltage and a reference voltage, the PWM control circuit being configured to control the conversion unit, corresponding to the error signal, thereby changing the first voltage; and a reference voltage supply unit configured to receive the battery voltage, to supply the reference voltage to the error AMP according to the received battery voltage, and to change the reference voltage. |
地址 |
Yongin-si KR |