发明名称 |
VOLTAGE CONVERTER CIRCUIT AND VOLTAGE CONVERTER CONTROLLER |
摘要 |
A voltage converter circuit, includes: a power switch for generating a pulse-width-modulation (PWM) signal to drive a current load, wherein the PWM signal toggles between a first level and a second level; a sensing pin, receiving a first sensing signal when the PWM signal is at the first level, and receiving a second sensing signal when the PWM signal is at the second level; a parameter sampling and setting unit, having an input terminal coupling to the sensing pin, generating a default current or a default voltage on the sensing pin and sampling the second sensing signal to generate a sampling signal when the PWM signal is at the second level, and holding the sampling signal to set a parameter of the voltage converter circuit when the PWM signal is at the first level. |
申请公布号 |
US2014226372(A1) |
申请公布日期 |
2014.08.14 |
申请号 |
US201313869684 |
申请日期 |
2013.04.24 |
申请人 |
RICHTEK TECHNOLOGY CORP. |
发明人 |
Tang Chien Fu;Chen Isaac Y.;Pan Jiun Hung;Lai Yung Chih;Ho Jyun Che |
分类号 |
H02M3/335 |
主分类号 |
H02M3/335 |
代理机构 |
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代理人 |
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主权项 |
1. A voltage converter controller, adapted to a voltage converter circuit which operates a power switch of the voltage converter circuit to generate a pulse-width-modulation signal and to drive a current load with the pulse-width-modulation signal toggling between a first level and a second level, the voltage converter controller comprising:
a sensing pin, receiving a first sensing signal when the pulse-width-modulation signal is at the first level, and receiving a second sensing signal when the pulse-width-modulation signal is at the second level; and a parameter sampling and setting unit, having an input terminal coupling to the sensing pin; when the pulse-width-modulation signal is at the second level, the parameter sampling and setting unit generates a default current or a default voltage on the sensing pin to generate the second sensing signal, and simultaneously samples the second sensing signal to generate a sampling signal; and when the pulse-width-modulation signal is at the first level, the parameter sampling and setting unit holds the sampling signal to set a parameter of the voltage converter controller. |
地址 |
Hsinchu TW |