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A power management topology for portable electronic devices that includes a feed-enabled AC/DC adapter that receives feedback data from a charge controller associated with the portable device. The feedback data can include battery charging current, battery voltage, or power requirements of the porta

A power management topology for portable electronic devices that includes a feed-enabled AC/DC adapter that receives feedback data from a charge controller associated with the portable device. The feedback data can include battery charging current, battery voltage, or power requirements of the portable device. Using the feedback data, the external AC/DC adapter can adjust the DC output to meet the charging requirement of the battery and/or the power requirements of the portable device.

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1. A power management topology for a portable electronic device, comprising: a portable electronic device comprising a rechargeable battery and a charge controller comprising circuitry generating a feedback signal indicative of battery charging power; and an external AC/DC adapter generating a

1. A power management topology for a portable electronic device, comprising: a portable electronic device comprising a rechargeable battery and a charge controller comprising circuitry generating a feedback signal indicative of battery charging power; and an external AC/DC adapter generating a DC source signal from an AC source, said adapter comprising a PWM generator generating a PWM signal, and a controller receiving said feedback signal and adjusting a duty cycle of said PWM signal thereby adjusting the power of said DC source signal wherein only said external AC/DC adapter, among said AC/DC adapter and said charge controller, comprises said PWM generator. 2. A topology as claimed in claim 1, wherein said portable electronic device further comprising a serial data interface and said feedback signal being generated as serial data, and wherein said AC/DC adapter further comprising a serial communications interface for receiving said serial data.3. A topology as claimed in claim 1, wherein said feedback signal is an analog signal.4. A topology as claimed in claim 1, wherein said portable electronic device further comprising modulation circuitry to modulate said feedback signal on top of said DC source signal, and said AC/DC adapter further comprising demodulation circuitry coupled to said DC source signal to demodulate said feedback signal.5. A topology as claimed in claim 1, wherein the charge controller further comprising circuitry to generate a feedback signal indicative of power requirements of said portable electronic device and battery charge current.