BATTERY MANAGEMENT SYSTEM WITH ADIABATIC SWITCHED-CAPACITOR CIRCUIT
An apparatus for switching between powering a load from a battery and powering the load from another power source includes a battery manager and a switched-capacitor network, wherein the switched-capacitor network comprises a plurality of capacitors, first and second switch sets, and a controller, wherein the controller causes the switched-capacitor network to transition between a first state and a second state.
1 - 68 . (canceled)
69 . An apparatus comprising:
a switching regulator to be electrically coupled to an AC-DC converter;
a charge pump electrically coupled to the switching regulator;
a charger to receive a voltage from at least one of: the switching regulator, the charge pump, or a combination of the switching regulator and the charge pump; and
at least one controller to control the switching regulator, the charge pump, and the charger to provide the voltage, wherein the voltage comprises at least one of: a system voltage for powering a load, a charging voltage to charge a battery, or a combination of the system voltage for powering the load and the charging voltage to charge the battery.
70 . The apparatus of claim 69 , wherein the charge pump is positioned between a voltage source and the switching regulator.
71 . The apparatus of claim 69 , further comprising a first line coupling the switching regulator to an output and a second line coupling the charger to a node on the first line, wherein the charge pump is positioned between the switching regulator and the node.
72 . The apparatus of claim 69 , further comprising a first line coupling the switching regulator to an output and a second line coupling the charger to a node on the first line, wherein the charge pump is positioned between the charger and the node.
73 . The apparatus of claim 69 , further comprising a first line coupling the switching regulator to an output, wherein the charge pump is positioned between a first node on the first line and a second node on the first line.
74 . The apparatus of claim 69 , wherein:
the at least one controller controls the switching regulator and the charge pump such that energy passes through at least one of: the switching regulator, the charge pump, or a combination of the switching regulator and the charge pump to charge the battery; and
the energy passes through the charger.
75 . The apparatus of claim 69 , wherein the at least one controller comprises a plurality of controllers.
76 . The apparatus of claim 75 , wherein the plurality of controllers comprise a first controller to control the switching regulator.
77 . The apparatus of claim 75 , wherein the plurality of controllers comprise a second controller to control the charge pump.
78 . The apparatus of claim 75 , wherein the plurality of controllers comprise a third controller to control the charger.
79 . The apparatus of claim 69 , wherein the charge pump comprises a first charge pump and a second charge pump.
80 . The apparatus of claim 79 , wherein the charge pump further comprises a plurality of bypass switches controlled by the at least one controller to selectively bypass at least one of: the first charge pump, the second charge pump, or a combination of the first charge pump and the second charge pump.
81 . The apparatus of claim 69 , wherein the charge pump charges the battery.
82 . The apparatus of claim 69 , wherein the charger charges the battery.
83 . The apparatus of claim 69 , wherein the charger is a buck-boost battery charger.
84 . The apparatus of claim 69 , wherein a source of the voltage provided is a part of a wireless charging system.
85 . The apparatus of claim 69 , wherein a source of the voltage is provided through a USB port.
86 . The apparatus of claim 69 , wherein the charger comprises a circuitry to maintain a constant current or a constant voltage while charging the battery.
87 . The apparatus of claim 69 , wherein the charger comprises a circuitry to measure an amount of charge on the battery.
88 . The apparatus of claim 69 , wherein the charger comprises a circuitry to provide protection from a fault.
89 . The apparatus of claim 69 , further comprising at least one switch to selectively connect and disconnect the battery from the load.
90 . The apparatus of claim 69 , wherein the charge pump comprises a plurality of switches forming a switched capacitor network, the switched capacitor network comprising at least one switching configuration.
91 . A method comprising:
receiving, by a charger, a voltage from at least one of: a switching regulator, a charge pump electrically coupled to the switching regulator, or a combination of the switching regulator and the charge pump, wherein the switching regulator is to be electrically coupled to an AC-DC converter; and
controlling the switching regulator, the charge pump, and the charger to provide the voltage, wherein the voltage comprises at least one of: a system voltage for powering a load, a charging voltage to charge a battery, or a combination of the system voltage for powering the load and the charging voltage to charge the battery.
92 . The method of claim 91 , wherein the charge pump is positioned between a voltage source and the switching regulator.
93 . The method of claim 91 , further comprising a first line coupling the switching regulator to an output and a second line coupling the charger to a node on the first line, wherein the charge pump is positioned between the switching regulator and the node.
94 . The method of claim 93 , further comprising a first line coupling the switching regulator to an output and a second line coupling the charger to a node on the first line, wherein the charge pump is positioned between the charger and the node.
95 . The method of claim 91 , further comprising a first line coupling the switching regulator to an output, wherein the charge pump is positioned between a first node on the first line and a second node on the first line.
96 . The method of claim 91 , further comprising:
controlling the switching regulator and the charge pump such that energy passes through at least one of: the switching regulator, the charge pump, or a combination of the switching regulator and the charge pump to charge the battery, wherein the energy passes through the charger.
97 . The method of claim 91 , wherein the charge pump comprises a first charge pump and a second charge pump.
98 . The method of claim 97 , wherein the charge pump further comprises a plurality of bypass switches controlled by the at least one controller to selectively bypass at least one of: the first charge pump, the second charge pump, or a combination of the first charge pump and the second charge pump.
99 . The method of claim 91 , wherein the charge pump charges the battery.
100 . The method of claim 91 , wherein the charge pump comprises a plurality of switches forming a switched capacitor network, the switched capacitor network comprising at least one switching configuration.
101 . An integrated circuit comprising:
a plurality of switches forming a switched capacitor network, the switched capacitor network comprising at least one switching configuration; and
a controller to generate control signals to control the plurality of switches according to a switching frequency, wherein the switched capacitor network provides a voltage to at least one of: a charger, a switching regulator, a load, or a combination of the charger, the switching regulator, and the load, wherein the voltage comprises at least one of: a system voltage for powering the load, a charging voltage to charge a battery, or a combination of the system voltage for powering the load and the charging voltage to charge the battery.
102 . The integrated circuit of claim 101 , wherein the load comprises a system voltage node.
103 . The integrated circuit of claim 101 , wherein the plurality of switches form at least one phase to operate in at least one operation mode to convert the voltage.
104 . The integrated circuit of claim 103 , wherein the at least one phase comprises a first charge pump, a second charge pump, and a plurality of bypass switches controlled by the controller to selectively bypass at least one of: the first charge pump, the second charge pump, or a combination of the first charge pump and the second charge pump.
105 . The integrated circuit of claim 101 , wherein at least some switches of the plurality of switches are coupled to a negative terminal of the switched capacitor network to facilitate transition of the switched capacitor network between a first state and a second state at a specific frequency.
106 . The integrated circuit of claim 105 , wherein the first state is a charging state and the second state is a discharging state.
107 . The integrated circuit of claim 101 , wherein at least some switches of the plurality of switches form phase switches coupled to a negative terminal of at least one fly capacitor.
108 . An integrated circuit comprising:
a plurality of switches contained in a switching regulator, the switching regulator to be electrically coupled to an AC-DC converter; and
a controller to generate control signals to control the plurality of switches to provide a voltage to at least a charger, a charge pump, or a combination of the charger and the charge pump, wherein the voltage comprises at least one of: a system voltage for powering a load, a charging voltage to charge a battery, or a combination of the system voltage for powering the load and the charging voltage to charge the battery.
109 . The integrated circuit of claim 108 , wherein the plurality of switches transform the voltage when used with an inductor external to the integrated circuit.
110 . An integrated circuit comprising:
a charger; and
a controller to control the charger to receive a voltage from at least one of: a switching regulator, a charge pump, or a combination of the switching regulator and the charge pump, wherein the switching regulator is to be electrically coupled to an AC-DC converter, and wherein the voltage comprises at least one of: a system voltage for powering a load, a charging voltage to charge a battery, or a combination of the system voltage for powering the load and the charging voltage to charge the battery.
111 . The integrated circuit of claim 110 , wherein the controller is to maintain a constant current, a constant voltage, or a constant current and a constant voltage to charge the battery.
112 . The integrated circuit of claim 110 , further comprising at least one switch to selectively connect or disconnect the battery to the load.
113 . The integrated circuit of claim 110 , further comprising a second controller to synchronize an operation of the switching regulator and the charger.
114 . The integrated circuit of claim 113 , wherein the second controller selectively connects or disconnects at least one switch to selectively connect or disconnect the battery to the load.
115 . The integrated circuit of claim 114 , wherein the second controller connects the at least one switch to connect the battery to the load when the voltage received by the charger is zero.