Systems and methods for minimizing static leakage of an integrated circuit
View Patent ↗Example systems and methods for a charge pump are disclosed. A charge pump may comprise a pump capacitor configured to charge when electrically coupled to a sleep signal and discharge when electrically coupled to an output, a means for receiving an alternating signal which electrically couples a V DD signal or an output to the pump capacitor based on a state of the alternating signal, a means for receiving a complement of the alternating signal which electrically couples the sleep signal with the pump capacitor based on a state of the complement of the alternating signal, and a means to electrically couple the alternating signal and the complement of the alternating signal to a node based on the state of the alternating signal and the state of the complement of the alternating signal.
1. A charge pump comprising:
an inverter electrically coupled to a V DD signal line and a V SS signal line, an input of the inverter electrically coupled to an alternating signal line, and an output of the inverter electrically coupled to a pump capacitor;
the pump capacitor electrically coupled to a source of a first PMOS transistor and a source of a second PMOS transistor;
the first PMOS transistor, a drain of the first PMOS transistor electrically coupled to the V SS signal line and a drain of the inverter, a gate of the first PMOS transistor electrically coupled to the alternating signal line, a gate of a third PMOS transistor, and a source of a fourth PMOS transistor, and a substrate of the first PMOS transistor electrically coupled to a node;
the second PMOS transistor, a drain of the second PMOS transistor electrically coupled to a negative voltage line, a gate of the second PMOS transistor electrically coupled to a complement of the alternating signal line, a gate of the fourth PMOS transistor, and a source of the third PMOS transistor, and a substrate of the second PMOS transistor electrically coupled to the node;
the third PMOS transistor, a drain of the third PMOS transistor and a substrate of the third PMOS transistor electrically coupled to the node; and
the fourth PMOS transistor, a drain of the fourth PMOS transistor and a substrate of the fourth PMOS transistor electrically coupled to the node.
2. The charge pump of claim 1 , further comprising a capacitor electrically coupled to the alternating signal line and the gate of the first PMOS transistor.
3. The charge pump of claim 1 , further comprising a capacitor electrically coupled to the complement of the alternating signal line and the gate of the second PMOS transistor.
4. The charge pump of claim 1 , wherein the node is further electrically coupled to a ground.
5. The charge pump of claim 1 , wherein the node is electrically coupled to an enable signal line.
6. The charge pump of claim 5 , further comprising an inverter electrically coupled to the node and the enable signal line.
7. The charge pump of claim 1 , wherein the alternating signal is line is electrically coupled to an oscillator.
8. The charge pump of claim 1 , wherein the negative voltage line is electrically coupled with a leakage manager system.
9. A charge pump comprising:
a pump capacitor configured to charge when electrically coupled with a V DD signal and a V SS signal and to discharge when electrically coupled with the V SS signal and a sleep signal;
an inverter with a PMOS transistor and an NMOS transistor, the PMOS transistor configured to electrically couple the V DD signal with the pump capacitor when a gate of the PMOS transistor receives a first low voltage and the NMOS transistor configured to electrically couple the V SS signal with the pump capacitor when a gate of the NMOS transistor receives a high voltage;
a first PMOS transistor configured to electrically couple the pump capacitor with the V SS signal when a gate of the first PMOS transistor receives a third low voltage;
a second PMOS transistor configured to electrically couple a complement of an alternating signal with a node when a gate of the second PMOS transistor receives a fourth low voltage;
a third PMOS transistor configured to electrically couple the sleep signal with the pump capacitor when a gate of the first PMOS transistor receives a second low voltage;
a fourth PMOS transistor configured to electrically couple the alternating signal with the node when a gate of the fourth PMOS transistor receives a fifth low voltage; and
the node electrically coupled to the substrate of the first PMOS transistor, the second PMOS transistor, the third PMOS transistor, and the fourth PMOS transistor.
10. The charge pump of claim 9 , further comprising a capacitor configured to electrically couple the alternating current with the gate of the first PMOS transistor.
11. The charge pump of claim 9 , further comprising a capacitor configured to electrically couple the complement of the alternating current with the gate of the third PMOS transistor.
12. The charge pump of claim 9 , wherein the node is further electrically coupled to a ground.
13. The charge pump of claim 9 , wherein the node is configured to receive an enable signal.
14. The charge pump of claim 9 , wherein the node receives an inverted enable signal from an inverter.
15. The charge pump of claim 9 , wherein second low voltage is the third low voltage.
16. The charge pump of claim 9 , wherein the fourth low voltage is the fifth low voltage.
17. The charge pump of claim 9 , wherein the alternating signal is received from an oscillator.
18. The charge pump of claim 9 , wherein the sleep signal is received from a leakage manager system.
19. A charge pump comprising:
a pump capacitor configured to charge when electrically coupled to a sleep signal and discharge when electrically coupled to an output;
a means for receiving an alternating signal which electrically couples a V DD signal or an output to the pump capacitor based on a state of the alternating signal;
a means for receiving a complement of the alternating signal which electrically couples the sleep signal with the pump capacitor based on a state of the complement of the alternating signal; and
a means to electrically couple the alternating signal and the complement of the alternating signal to a node based on the state of the alternating signal and the state of the complement of the alternating signal.
20. The charge pump of system 19 , further comprising a means to electrically decouple the charge pump from the V SS signal and the sleep signal.