N900 Hardware Battery Charger - Revision history

joerg_rw: Reverted edits by l29ah (Talk) to last revision by joerg_rw

2015-05-15T03:20:29Z

Reverted edits by l29ah (Talk) to last revision by joerg_rw

← Older revision		Revision as of 03:20, 15 May 2015
Line 3:		Line 3:
	==Hardware==		==Hardware==

-	The battery charger is the [~~https~~://~~dump~~.~~bitcheese~~.~~net~~/~~files~~/~~abevyby~~/~~bq24150~~.~~pdf~~ bq24150a] charger from TI.	+	The battery charger is the [http://focus.ti.com/docs/prod/folders/print/bq24150a.html bq24150a] charger from TI.

	It features reverse boost mode - which enables power of up to 200 mA@5V to be supplied to a USB device connected to the N900.		It features reverse boost mode - which enables power of up to 200 mA@5V to be supplied to a USB device connected to the N900.

l29ah: /* Hardware */

2015-05-14T22:59:51Z

Hardware

← Older revision		Revision as of 22:59, 14 May 2015
Line 3:		Line 3:
	==Hardware==		==Hardware==

-	The battery charger is the [~~http~~://~~focus~~.ti.~~com~~/~~docs~~/~~prod~~/~~folders/print/bq24150a~~.~~html~~ bq24150a] charger from TI.	+	The battery charger is the [https://dump.bitcheese.net/files/abevyby/bq24150.pdf bq24150a] charger from TI.

	It features reverse boost mode - which enables power of up to 200 mA@5V to be supplied to a USB device connected to the N900.		It features reverse boost mode - which enables power of up to 200 mA@5V to be supplied to a USB device connected to the N900.

joerg_rw: /* Hardware */

2013-08-13T14:55:54Z

Hardware

← Older revision		Revision as of 14:55, 13 August 2013
Line 11:		Line 11:
	It also properly supports charging very depleted batteries gently.		It also properly supports charging very depleted batteries gently.

-	There are safety implications of software drivers for this chip, the chip can be configured to have an output voltage of up to 4.44 V, which is higher than the absolute maximum voltage of 4.2 V that li-ion batteries can be safely charged to.	+	There are safety implications of software drivers for this chip, the chip can be configured to have an output voltage of up to 4.44 V, which is higher than the absolute maximum voltage of 4.2 V [citation needed] that li-ion batteries can be safely charged to.

	==Software==		==Software==

pali at 09:29, 30 July 2012

2012-07-30T09:29:41Z

← Older revision		Revision as of 09:29, 30 July 2012
Line 3:		Line 3:
	==Hardware==		==Hardware==

-	The battery charger is the [http://focus.ti.com/docs/prod/folders/print/~~bq24150~~.html ~~bq24150~~] charger from TI.	+	The battery charger is the [http://focus.ti.com/docs/prod/folders/print/bq24150a.html bq24150a] charger from TI.

	It features reverse boost mode - which enables power of up to 200 mA@5V to be supplied to a USB device connected to the N900.		It features reverse boost mode - which enables power of up to 200 mA@5V to be supplied to a USB device connected to the N900.

pali: /* Software */

2011-02-17T21:51:52Z

Software

← Older revision		Revision as of 21:51, 17 February 2011
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	There is no kernel driver for this chip - it is driven over I2C by [[N900 Software BME\|BME]].		There is no kernel driver for this chip - it is driven over I2C by [[N900 Software BME\|BME]].
	[[N900 Software BME\|BME (Battery Managment Entity)]] needs replaced with an open-source version in order to allow easy operation in [[N900 Hardware USB Host\|USB host mode]].		[[N900 Software BME\|BME (Battery Managment Entity)]] needs replaced with an open-source version in order to allow easy operation in [[N900 Hardware USB Host\|USB host mode]].
		+
		+	Partial third party kernel driver exists, see commits in android-n900 kernel:
		+	[http://gitorious.org/android-n900/kernel-ng/commit/a7aa7f049e5be547a65247b7d88f6d248929d26c] and [http://gitorious.org/android-n900/kernel-ng/commit/9c1d036cf952134eb75adcc65936a94ac6891e89]

	[[category:N900_Hardware]]		[[category:N900_Hardware]]

amigadave: wikify slightly

2010-12-14T07:47:31Z

wikify slightly

← Older revision		Revision as of 07:47, 14 December 2010
Line 1:		Line 1:
	The battery charger charges the battery, and supplies power when running connected to USB. It can also supply power for [[N900 Hardware USB Host\|USB Host]] mode.		The battery charger charges the battery, and supplies power when running connected to USB. It can also supply power for [[N900 Hardware USB Host\|USB Host]] mode.
-	=Hardware=	+
		+	==Hardware==

	The battery charger is the [http://focus.ti.com/docs/prod/folders/print/bq24150.html bq24150] charger from TI.		The battery charger is the [http://focus.ti.com/docs/prod/folders/print/bq24150.html bq24150] charger from TI.

-	It features reverse boost mode - which enables power of up to ~~200mA~~@5V to be supplied to a USB device connected to the N900.	+	It features reverse boost mode - which enables power of up to 200 mA@5V to be supplied to a USB device connected to the N900.

-	When initially powered on, this chip, and the [[N900 Hardware USB PHY\|USB interface]] chip enable charging from dead without any software running.	+	When initially powered on, this chip, and the [[N900 Hardware USB PHY\|USB interface]] chip enable charging from dead without any software running. This mode of charging respects the maximum current available without negotiation - 100 mA in the case of a normal USB connection, or 1.2 A in the case the charger is plugged in (actually max current from USB in this autonomous mode is limited to 500 mA).
-	This mode of charging respects the maximum current available without negotiation - ~~100mA~~ in the case of a normal USB connection, or 1.2A in the case the charger is plugged in (actually max current from USB in this autonomous mode is limited to ~~500mA~~).	+

	It also properly supports charging very depleted batteries gently.		It also properly supports charging very depleted batteries gently.

-	There are safety implications of software drivers for this chip, the chip can be configured to have an output voltage of up to 4.~~44V~~, which is higher than the absolute maximum voltage of 4.2V that li-ion batteries can be safely charged to.	+	There are safety implications of software drivers for this chip, the chip can be configured to have an output voltage of up to 4.44 V, which is higher than the absolute maximum voltage of 4.2 V that li-ion batteries can be safely charged to.
		+
		+	==Software==

-	~~=Software=~~
	There is no kernel driver for this chip - it is driven over I2C by [[N900 Software BME\|BME]].		There is no kernel driver for this chip - it is driven over I2C by [[N900 Software BME\|BME]].
	[[N900 Software BME\|BME (Battery Managment Entity)]] needs replaced with an open-source version in order to allow easy operation in [[N900 Hardware USB Host\|USB host mode]].		[[N900 Software BME\|BME (Battery Managment Entity)]] needs replaced with an open-source version in order to allow easy operation in [[N900 Hardware USB Host\|USB host mode]].

	[[category:N900_Hardware]]		[[category:N900_Hardware]]

joerg_rw: /* Hardware */

2010-12-13T11:44:48Z

Hardware

← Older revision		Revision as of 11:44, 13 December 2010
Line 7:		Line 7:

	When initially powered on, this chip, and the [[N900 Hardware USB PHY\|USB interface]] chip enable charging from dead without any software running.		When initially powered on, this chip, and the [[N900 Hardware USB PHY\|USB interface]] chip enable charging from dead without any software running.
-	This mode of charging respects the maximum current available without negotiation - 100mA in the case of a normal USB connection, or 1.2A in the case the charger is plugged in.	+	This mode of charging respects the maximum current available without negotiation - 100mA in the case of a normal USB connection, or 1.2A in the case the charger is plugged in (actually max current from USB in this autonomous mode is limited to 500mA).

	It also properly supports charging very depleted batteries gently.		It also properly supports charging very depleted batteries gently.

joerg_rw: /* Hardware */ 200mA

2010-12-13T11:43:23Z

Hardware: 200mA

← Older revision		Revision as of 11:43, 13 December 2010
Line 4:		Line 4:
	The battery charger is the [http://focus.ti.com/docs/prod/folders/print/bq24150.html bq24150] charger from TI.		The battery charger is the [http://focus.ti.com/docs/prod/folders/print/bq24150.html bq24150] charger from TI.

-	It features reverse boost mode - which enables power to be supplied to a USB device connected to the N900.	+	It features reverse boost mode - which enables power of up to 200mA@5V to be supplied to a USB device connected to the N900.

	When initially powered on, this chip, and the [[N900 Hardware USB PHY\|USB interface]] chip enable charging from dead without any software running.		When initially powered on, this chip, and the [[N900 Hardware USB PHY\|USB interface]] chip enable charging from dead without any software running.

speedevil: /* Hardware */

2010-06-04T10:53:55Z

Hardware

← Older revision		Revision as of 10:53, 4 June 2010
Line 4:		Line 4:
	The battery charger is the [http://focus.ti.com/docs/prod/folders/print/bq24150.html bq24150] charger from TI.		The battery charger is the [http://focus.ti.com/docs/prod/folders/print/bq24150.html bq24150] charger from TI.

-	It ~~also~~ features reverse boost mode - which enables power to be supplied to a USB device connected to the N900.	+	It features reverse boost mode - which enables power to be supplied to a USB device connected to the N900.
-		+
-	~~When initially powered on, this chip, and the~~	+
-		+

		+	When initially powered on, this chip, and the [[N900 Hardware USB PHY\|USB interface]] chip enable charging from dead without any software running.
		+	This mode of charging respects the maximum current available without negotiation - 100mA in the case of a normal USB connection, or 1.2A in the case the charger is plugged in.

		+	It also properly supports charging very depleted batteries gently.

	There are safety implications of software drivers for this chip, the chip can be configured to have an output voltage of up to 4.44V, which is higher than the absolute maximum voltage of 4.2V that li-ion batteries can be safely charged to.		There are safety implications of software drivers for this chip, the chip can be configured to have an output voltage of up to 4.44V, which is higher than the absolute maximum voltage of 4.2V that li-ion batteries can be safely charged to.

speedevil: /* Hardware */

2010-06-04T10:50:43Z

Hardware

← Older revision		Revision as of 10:50, 4 June 2010
Line 7:		Line 7:

	When initially powered on, this chip, and the		When initially powered on, this chip, and the
-	~~There is no kernel driver for this chip - it is driven over I2C by [[N900 Software BME\|BME]].~~

-	~~[[N900 Software BME\|BME (Battery Managment Entity)]] needs replaced with an open-source version in order to allow easy operation in [[N900 Hardware USB Host\|USB host mode]].~~	+
		+

	There are safety implications of software drivers for this chip, the chip can be configured to have an output voltage of up to 4.44V, which is higher than the absolute maximum voltage of 4.2V that li-ion batteries can be safely charged to.		There are safety implications of software drivers for this chip, the chip can be configured to have an output voltage of up to 4.44V, which is higher than the absolute maximum voltage of 4.2V that li-ion batteries can be safely charged to.
		+
		+	=Software=
		+	There is no kernel driver for this chip - it is driven over I2C by [[N900 Software BME\|BME]].
		+	[[N900 Software BME\|BME (Battery Managment Entity)]] needs replaced with an open-source version in order to allow easy operation in [[N900 Hardware USB Host\|USB host mode]].

	[[category:N900_Hardware]]		[[category:N900_Hardware]]