Hybrid-mode charging circuit, and charging method
A hybrid-mode charging circuit, and a charging method are provided. The hybrid-mode charging circuit includes a hybrid-mode charging control circuit, configured to determine whether an adapter supports continuous voltage regulation, where when the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 are controlled to be turned off and a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 are controlled to work in a buck charging mode or a three-level buck mode; and when the adapter supports continuous voltage regulation, the adapter is controlled to output two times of battery voltage, the transistor M 5 and the transistor M 6 are controlled to be always in an on state, and the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 are controlled to be turned on or off alternately.
1 . A hybrid-mode charging circuit, comprising: an adapter, a hybrid-mode charging control circuit, a transistor M 1 , a transistor M 2 , a transistor M 3 , a transistor M 4 , a transistor M 5 , a transistor M 6 , a flying capacitor, a power inductor, and a battery, wherein
a gate of the transistor M 1 , a gate of the transistor M 2 , a gate of the transistor M 3 , a gate of the transistor M 4 , a gate of the transistor M 5 , and a gate of the transistor M 6 are all connected to the hybrid-mode charging control circuit, an output terminal of the adapter is connected to a drain of the transistor M 1 , a source and a substrate of the transistor M 1 are respectively connected to a drain of the transistor M 2 and one terminal of the flying capacitor, a source and a substrate of the transistor M 2 are respectively connected to a drain of the transistor M 3 , one terminal of the power inductor, and a drain of the transistor M 5 , a source and a substrate of the transistor M 3 are respectively connected to the other terminal of the flying capacitor and a drain of the transistor M 4 , a source and a substrate of the transistor M 4 are grounded, the other terminal of the power inductor is respectively connected to a drain of the transistor M 6 and the battery, and a source and a substrate of the transistor M 5 are connected to a source and a substrate of the transistor M 6 ; and
the hybrid-mode charging control circuit is configured to determine whether the adapter supports continuous voltage regulation for controlling on or off of the transistor M 1 , the transistor M 2 , the transistor M 3 , the transistor M 4 , the transistor M 5 , and the transistor M 6 ; when the adapter does not support continuous voltage regulation, the transistor M 5 and the transistor M 6 are controlled to be turned off and the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 are controlled to work in a buck charging mode or a three-level buck mode; and when the adapter supports continuous voltage regulation, the adapter is controlled to output two times of battery voltage, the transistor M 5 and the transistor M 6 are controlled to be always in an on state, and the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 are controlled to be turned on or off alternately, such that the charging circuit works in a charge pump buck mode.
2 . The hybrid-mode charging circuit according to claim 1 , further comprising: an input power supply fast charging protocol communication module, wherein the input power supply fast charging protocol communication module is connected to the adapter through a fast charging communication interface.
3 . The hybrid-mode charging circuit according to claim 1 , further comprising: a battery capacitor, wherein
the battery capacitor is respectively connected to the battery, the power inductor, and the drain of the transistor M 6 .
4 . The hybrid-mode charging circuit according to claim 1 , further comprising: a transistor M 7 , a system power supply end, and a power supply capacitor, wherein
a gate of the transistor M 7 is connected to the hybrid-mode charging control circuit, a drain of the transistor M 7 is respectively connected to the system power supply end, the power inductor, and one terminal of the power supply capacitor, the other terminal of the power supply capacitor is grounded, and a source and a substrate of the transistor M 7 are respectively connected to the drain of the transistor M 6 and the battery.
5 . A charging method for a hybrid-mode charging circuit, for implementing the hybrid-mode charging circuit according to claim 1 , wherein the charging method comprises:
determining whether an adapter supports continuous voltage regulation;
controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode; and
controlling, if the adapter supports continuous voltage regulation, the adapter to output two times of battery voltage, controlling the transistor M 5 and the transistor M 6 to be always in an on state, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, such that the charging circuit works in a charge pump buck mode.
6 . The charging method for a hybrid-mode charging circuit according to claim 5 , further comprising: an input power supply fast charging protocol communication module, wherein the input power supply fast charging protocol communication module is connected to the adapter through a fast charging communication interface.
7 . The charging method for a hybrid-mode charging circuit according to claim 5 , further comprising: a battery capacitor, wherein
the battery capacitor is respectively connected to the battery, the power inductor, and the drain of the transistor M 6 .
8 . The charging method for a hybrid-mode charging circuit according to claim 5 , further comprising: a transistor M 7 , a system power supply end, and a power supply capacitor, wherein
a gate of the transistor M 7 is connected to the hybrid-mode charging control circuit, a drain of the transistor M 7 is respectively connected to the system power supply end, the power inductor, and one terminal of the power supply capacitor, the other terminal of the power supply capacitor is grounded, and a source and a substrate of the transistor M 7 are respectively connected to the drain of the transistor M 6 and the battery.
9 . The charging method for a hybrid-mode charging circuit according to claim 5 , wherein the controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode specifically comprises:
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, controlling the transistor M 1 and the transistor M 4 to be always in an on state, such that a flying capacitor is connected to a circuit between the adapter and a ground, and forming a buck converter by using the transistor M 2 as an upper power transistor of the buck converter and using the transistor M 3 as a lower power transistor of the buck converter, by controlling alternate on of the transistor M 2 and the transistor M 3 and a duty ratio, and in combination with the power inductor; or
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, controlling the transistor M 2 and the transistor M 3 to be always in an on state, such that a flying capacitor is short-circuited, and forming a buck converter by using the transistor M 1 as an upper power transistor of the buck converter and using the transistor M 4 as a lower power transistor of the buck converter, by controlling alternate on of the transistor M 1 and the transistor M 4 and a duty ratio, and in combination with the power inductor; or
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on alternately, such that the charging circuit is in the three-level buck mode in combination with a CFLY and the power inductor.
10 . The charging method for a hybrid-mode charging circuit according to claim 6 , wherein the controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode specifically comprises:
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, controlling the transistor M 1 and the transistor M 4 to be always in an on state, such that a flying capacitor is connected to a circuit between the adapter and a ground, and forming a buck converter by using the transistor M 2 as an upper power transistor of the buck converter and using the transistor M 3 as a lower power transistor of the buck converter, by controlling alternate on of the transistor M 2 and the transistor M 3 and a duty ratio, and in combination with the power inductor; or
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, controlling the transistor M 2 and the transistor M 3 to be always in an on state, such that a flying capacitor is short-circuited, and forming a buck converter by using the transistor M 1 as an upper power transistor of the buck converter and using the transistor M 4 as a lower power transistor of the buck converter, by controlling alternate on of the transistor M 1 and the transistor M 4 and a duty ratio, and in combination with the power inductor; or
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on alternately, such that the charging circuit is in the three-level buck mode in combination with a CFLY and the power inductor.
11 . The charging method for a hybrid-mode charging circuit according to claim 7 , wherein the controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode specifically comprises:
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, controlling the transistor M 1 and the transistor M 4 to be always in an on state, such that a flying capacitor is connected to a circuit between the adapter and a ground, and forming a buck converter by using the transistor M 2 as an upper power transistor of the buck converter and using the transistor M 3 as a lower power transistor of the buck converter, by controlling alternate on of the transistor M 2 and the transistor M 3 and a duty ratio, and in combination with the power inductor; or
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, controlling the transistor M 2 and the transistor M 3 to be always in an on state, such that a flying capacitor is short-circuited, and forming a buck converter by using the transistor M 1 as an upper power transistor of the buck converter and using the transistor M 4 as a lower power transistor of the buck converter, by controlling alternate on of the transistor M 1 and the transistor M 4 and a duty ratio, and in combination with the power inductor; or
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on alternately, such that the charging circuit is in the three-level buck mode in combination with a CFLY and the power inductor.
12 . The charging method for a hybrid-mode charging circuit according to claim 8 , wherein the controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode specifically comprises:
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, controlling the transistor M 1 and the transistor M 4 to be always in an on state, such that a flying capacitor is connected to a circuit between the adapter and a ground, and forming a buck converter by using the transistor M 2 as an upper power transistor of the buck converter and using the transistor M 3 as a lower power transistor of the buck converter, by controlling alternate on of the transistor M 2 and the transistor M 3 and a duty ratio, and in combination with the power inductor; or
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, controlling the transistor M 2 and the transistor M 3 to be always in an on state, such that a flying capacitor is short-circuited, and forming a buck converter by using the transistor M 1 as an upper power transistor of the buck converter and using the transistor M 4 as a lower power transistor of the buck converter, by controlling alternate on of the transistor M 1 and the transistor M 4 and a duty ratio, and in combination with the power inductor; or
controlling the transistor M 5 and the transistor M 6 to be turned off, such that a power inductor is connected to the charging circuit, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on alternately, such that the charging circuit is in the three-level buck mode in combination with a CFLY and the power inductor.
13 . The charging method for a hybrid-mode charging circuit according to claim 5 , wherein after the controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode, the charging method further comprises:
converting a voltage of the adapter to a system power supply end, wherein a transistor M 7 is always in an on state, and a hybrid-mode charging control circuit controls a duty ratio of a buck converter, to allow a voltage of the system power supply end to be greater than the battery voltage.
14 . The charging method for a hybrid-mode charging circuit according to claim 6 , wherein after the controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode, the charging method further comprises:
converting a voltage of the adapter to a system power supply end, wherein a transistor M 7 is always in an on state, and a hybrid-mode charging control circuit controls a duty ratio of a buck converter, to allow a voltage of the system power supply end to be greater than the battery voltage.
15 . The charging method for a hybrid-mode charging circuit according to claim 7 , wherein after the controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode, the charging method further comprises:
converting a voltage of the adapter to a system power supply end, wherein a transistor M 7 is always in an on state, and a hybrid-mode charging control circuit controls a duty ratio of a buck converter, to allow a voltage of the system power supply end to be greater than the battery voltage.
16 . The charging method for a hybrid-mode charging circuit according to claim 8 , wherein after the controlling, if the adapter does not support continuous voltage regulation, a transistor M 5 and a transistor M 6 to be turned off and controlling a transistor M 1 , a transistor M 2 , a transistor M 3 , and a transistor M 4 to work in a buck charging mode or a three-level buck mode, the charging method further comprises:
converting a voltage of the adapter to a system power supply end, wherein a transistor M 7 is always in an on state, and a hybrid-mode charging control circuit controls a duty ratio of a buck converter, to allow a voltage of the system power supply end to be greater than the battery voltage.
17 . The charging method for a hybrid-mode charging circuit according to claim 5 , wherein the controlling, if the adapter supports continuous voltage regulation, the adapter to output two times of battery voltage, controlling the transistor M 5 and the transistor M 6 to be always in an on state, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, such that the charging circuit works in a charge pump buck mode specifically comprises:
controlling the adapter to output the two times of battery voltage;
controlling the transistor M 5 and the transistor M 6 to be always in the on state, such that a power inductor is short-circuited; and
controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, wherein
an output voltage of a flying capacitor is equal to the battery voltage, such that the charging circuit is in a charge pump control mode.
18 . The charging method for a hybrid-mode charging circuit according to claim 6 , wherein the controlling, if the adapter supports continuous voltage regulation, the adapter to output two times of battery voltage, controlling the transistor M 5 and the transistor M 6 to be always in an on state, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, such that the charging circuit works in a charge pump buck mode specifically comprises:
controlling the adapter to output the two times of battery voltage;
controlling the transistor M 5 and the transistor M 6 to be always in the on state, such that a power inductor is short-circuited; and
controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, wherein
an output voltage of a flying capacitor is equal to the battery voltage, such that the charging circuit is in a charge pump control mode.
19 . The charging method for a hybrid-mode charging circuit according to claim 7 , wherein the controlling, if the adapter supports continuous voltage regulation, the adapter to output two times of battery voltage, controlling the transistor M 5 and the transistor M 6 to be always in an on state, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, such that the charging circuit works in a charge pump buck mode specifically comprises:
controlling the adapter to output the two times of battery voltage;
controlling the transistor M 5 and the transistor M 6 to be always in the on state, such that a power inductor is short-circuited; and
controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, wherein
an output voltage of a flying capacitor is equal to the battery voltage, such that the charging circuit is in a charge pump control mode.
20 . The charging method for a hybrid-mode charging circuit according to claim 8 , wherein the controlling, if the adapter supports continuous voltage regulation, the adapter to output two times of battery voltage, controlling the transistor M 5 and the transistor M 6 to be always in an on state, and controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, such that the charging circuit works in a charge pump buck mode specifically comprises:
controlling the adapter to output the two times of battery voltage;
controlling the transistor M 5 and the transistor M 6 to be always in the on state, such that a power inductor is short-circuited; and
controlling the transistor M 1 , the transistor M 2 , the transistor M 3 , and the transistor M 4 to be turned on or off alternately, wherein
an output voltage of a flying capacitor is equal to the battery voltage, such that the charging circuit is in a charge pump control mode.