Leakage current reduction in a power regulator
View Patent ↗A regulator with decreased leakage and low loss for a power amplifier is described. Switching circuitry is used to connect the regulator input bias to a bias control voltage when the power amplifier is to be operated in an on condition or to a voltage generator when the power amplifier is to be operated in an off condition.
1. A voltage generator comprising:
(a) an input adapted to be driven by an input waveform;
(b) means to generate, along two distinct paths, complementary waveforms based on the input waveform;
(c) a rectifying arrangement to rectify the complementary waveforms to obtain a rectified voltage, switching status of the rectifying arrangement being driven by the complementary waveforms themselves; and
(d) means to limit the rectified voltage to a controllable voltage value.
2. The voltage generator of claim 1 , the voltage generator being for reducing leakage current in a regulator transistor.
3. The voltage generator of claim 2 , the voltage generator being connected with a voltage supply and outputting a leakage current reduction voltage.
4. The voltage generator of claim 1 , wherein the means to generate the complementary waveforms comprise a first inverter and a second inverter.
5. The voltage generator of claim 4 , further comprising:
voltage limiting means to limit the voltage across the first inverter and the second inverter.
6. The voltage generator of claim 1 , further comprising
current adjusting means to adjust current throughput through the voltage generator.
7. The voltage generator of claim 1 , wherein the rectifying arrangement comprises switching capacitors and switching transistors.
8. The voltage generator of claim 1 , wherein the means to limit the rectified voltage to a controllable voltage value comprise a transistor acting as a voltage limiter.
9. The voltage generator of claim 1 , said voltage generator being a positive voltage generator.
10. The voltage generator of claim 1 , said voltage generator being a negative voltage generator.