| 摘要 |
Charge pump circuitry (30) compares bottom plate voltages of first (C1) and second (C2) flying capacitors in a current mode charge pump (1B) to a reference value (VDD-V28) by means of a comparator (20) which drives a flip-flop (22) that generates first (F1) and second (F2) complementary phase signals. The first and second phase signals control switching of the flying capacitors to determine a flying capacitor swapping frequency just low enough to prevent saturation of a discharge current source (I0) that discharges the flying capacitors into an output conductor (3).
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