N900 Hardware Power management

(Gaia)
(Gaia)
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The TWL4030  is a TI companion chip to the SoC.
The TWL4030  is a TI companion chip to the SoC.
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For more information see [[N900_Hardware_Chipset]]
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For more information see [[N900 Hardware Chipset]]
====USB battery charger====
====USB battery charger====

Revision as of 11:02, 4 June 2010

The power managment on the n900 is very complex, and involves a large number of interacting systems.

Contents

Hardware

SoC

The System-on-a-chip is the main processor on the n900. This is the TI omap3430. For more information see N900 Hardware CPU.

Gaia

The TWL4030 is a TI companion chip to the SoC. For more information see N900 Hardware Chipset

USB battery charger

The bq24150 charger from TI is a flexible charger. It, along with the PHY chip - support charging without the intervention of the SoC when the system is charging from a completely dead battery. The PHY chip detects a charger (shorted D+ and D- pins) and the charger uses this information to charge more rapidly.

It also features reverse boost mode - which enables power to be supplied to a USB device connected to the N900. (up to a limit of 200mA)

For more information see N900 Hardware Battery Charger

Software