Power Distribution

In normal operation, the baseband is powered from the phone's battery.

An external charger can be used for recharging the battery and supplying power to the phone.

The baseband contains parts that control power distribution to whole phone excluding those parts that use continuous battery supply. The battery feeds power directly to the CCONT and UI (buzzer and LEDs for display/ keyboard). Figure 7, "Baseband Power Distribution," on page 15 shows a block diagram of the power distribution.

The power management circuit CHAPS provides protection against over-voltages, charger failures and pirate chargers etc. that would otherwise cause damage to the phone.

PA SUPPLY r

RF SUPPLIES

PA SUPPLY r

RF SUPPLIES

CHARGER CONNECTOR

Figure 7: Baseband Power Distribution

CHARGER CONNECTOR

Figure 7: Baseband Power Distribution

Was this article helpful?

0 0
DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

Get My Free Ebook


Post a comment