| 摘要 |
A voltage conversion circuit (50) for transforming an input voltage level at an input voltage node (62) to a relatively higher output voltage level at an output voltage node (93) with respect to a common reference voltage node (56) includes an inductor (90) coupling the input voltage node (62) to the output voltage node (93) and a signal source (52), such as a linear timer integrated circuit ("IC") supplying an output signal (80) having alternating first and second states. A bipolar switch (58) having first and second current carrying terminals and a control terminal (84), its first current carrying terminal coupled to the output voltage node (93), and its control terminal connected to receive the output signal (80) from the IC. A MOS switch (60) having first and second voltage carrying terminals and a gate terminal, its first voltage carrying terminal coupled to the common reference voltage node (56), its second voltage carrying terminal coupled to the second current carrying terminal of the bipolar switch (58) and its gate terminal coupled to receive the output signal (OUT at 80) from the signal source (IC). At least one diode (86) couples the control terminal of the bipolar switch (58) to the common reference voltage node (56).
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