Multi-mode power manager for power management integrated circuit

摘要

A Multi-Tile Power Management Integrated Circuit (MTPMIC) includes tiles including an MCU/ADC tile and a power manager tile. The power manager tile includes a set of Configurable Switching Power Supply Pulse Width Modulator (CSPSPWM) components. These components, in combination with other circuitry external to the integrated circuit, are configurable to form a selected one of a number of different switching power supply circuits. Upon power up, an internal regulator supplies power to the CSPSPWM. The CSPSPWM then controls the power supply to begin switching in a low frequency start-up mode. The CSPSPWM determines during start-up the current sensing method based on circuitry external to the integrated circuit. A supply voltage generated is then supplied via a conductor of a standardized bus to a processor in the MCU/ADC tile. The processor begins executing instructions, and as a result writes across the standardized bus to configure the various tiles of the MTPMIC.

主权项

1. An integrated circuit comprising:
a first circuit comprising a Configurable Switching Power Supply Pulse Width Modulator (CSPSPWM) operable as a step down converter controller and as a flyback converter controller, a driver output terminal, a driver coupled to receive a driver input signal from the CSPSPWM and coupled to drive a driver output signal onto the driver output terminal, a supply voltage terminal couplable to an error amplifier of the CSPSPWM, and a configuration register, wherein configuration information stored in the configuration register determines a configuration of the CSPSPWM; a memory; and a processor adapted to access the memory and to execute instructions stored in the memory, wherein the processor is powered substantially entirely by power received from the first circuit as a result of an operation of the CSPSPWM, wherein the processor is configured to write to the configuration register in the first circuit thereby configuring the CSPSPWM.