Systems, methods, and converters for distributing power

A system for distributing power between an external power supply, a battery, and a host device, the system comprising:

• an input terminal for coupling to the external power supply;
• a battery terminal for coupling to the battery;
• converter circuitry selectively coupled between the input terminal, the battery terminal, and a supply rail of the host device;
• and
• control circuitry for controlling power distribution between the external power supply, the battery, and the supply rail via the converter circuitry,
• wherein, in a switch capacitor mode, the control circuitry controls the converter circuitry to implement a switched capacitor converter to convert an input voltage at the input terminal to supply a battery voltage at the battery terminal, and
• wherein, in an inductive mode, the control circuitry is configured to control the converter circuitry to implement an inductive converter to convert the input voltage at the input terminal to supply a battery voltage at the battery terminal.

A system for distributing power between an external power supply, a battery, and a host device, the system comprising:

• an input terminal for coupling to a power supply;
• converter circuitry configurable to implement an inductive power converter and a switch capacitor power converter;
• a battery terminal for coupling to a battery;
• a controller configured to detect a characteristics of the power supply and couple the battery terminal to an output of the inductive power converter or an output of the switched capacitor power converter based in the detected characteristic.

A power converter, comprising:

• a first switch coupled between a first converter node and a first flying capacitor node;
• a second switch coupled between the first flying capacitor node and a second converter node;
• a third switch coupled between the second converter node and a second flying capacitor node;
• a fourth switch coupled between second flying capacitor node and a reference voltage node;
• a fifth switch coupled between the first flying capacitor node and a third converter node,
• wherein the first and second flying capacitor nodes are for coupling a first flying capacitor therebetween;
• wherein the power converter is operable in:
• a first mode to convert a first input voltage received at the first converter node to a first output voltage at the first output voltage node;
• and
• a second mode to convert a second input voltage received at the second input voltage to the first output voltage.

A power converter, comprising:

• first, second, third and fourth switches coupled in series between a first input voltage node and a reference voltage node, the first and second switched coupled at a first flying capacitor node, the second and third switches coupled at a first output voltage node for outputting a first output voltage, the third and fourth switches coupled at a second flying capacitor node, the first and second flying capacitor nodes for coupling a flying capacitor therebetween;
• and
• a fifth switch coupled between the first flying capacitor node and a second input voltage node;
• wherein the power converter is operable in:
• a first mode to convert a first input voltage received at the first input voltage node to the first output voltage;
• and
• a second mode to convert a second input voltage received at the second input voltage to the first output voltage.