| 摘要 |
A low EMI power supply (figure 1) includes a control circuit (24), a power switch (12) connected to the control circuit, an anti-parallel diode (14) connected to the power switch, an inductor (22) coupled to the anti-parallel diode, an output diode (18) coupled to the inductor, and an output capacitor (20) connected to the output diode. The power supply provides a controllable and variable high voltage power supply from a small number of devices while, at the same time, producing low EMI. Power conversion is achieved at high efficiencies due to the recycling of energy in parasitic capacitance. Due to its low EMI, the power supply is particularly well suited for driving electronic devices such as avalanche photodiodes.
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