发明名称 |
Small offline power supply |
摘要 |
A power supply includes a half bridge transistor circuit coupled across a DC bus, where the half bridge transistor circuit includes a high-side transistor and a low-side transistor and produces an output pulse width modulation (PWM) signal and a self oscillating half bridge driver circuit for producing first and second control PWM signals in response to an external threshold signal. The first control PWM signal is coupled to a control terminal of the high-side transistor and the second control PWM signal is coupled to a control terminal of the low-side transistor. The power supply also includes a low pass filter for receiving the output PWM signal and producing a DC output voltage therefrom across a pair of output terminals and a programmable voltage regulating device having an input terminal coupled to the DC output voltage and an output terminal coupled to the external threshold voltage.
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申请公布号 |
US5805433(A) |
申请公布日期 |
1998.09.08 |
申请号 |
US19970842713 |
申请日期 |
1997.04.16 |
申请人 |
INTERNATIONAL RECTIFIER CORPORATION |
发明人 |
WOOD, PETER N. |
分类号 |
H02M3/158;(IPC1-7):H02M3/337 |
主分类号 |
H02M3/158 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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