Power Management in Embedded ARM HW Integrated With Embedded Linux

8/11/2019 Power Management in Embedded ARM HW Integrated With Embedded Linux

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http://www.ep.liu.se/


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64

64


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75%


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64

64

3.3V 185 1

3.3V 270 2.5

5

640x

480@60Hz

16


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4MiB


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5V

4.2V

1.2V 3.3V

5V

12V

3.3

5


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I2C

3.3 3.3 25mA

0.83.6 3.3 400mA

0.83.6 1.2 400mA

0.83.6 3.3 1A

3.3 3.3 25mA

5V 100mA

500mA

5V

3.3V

5V

12V

VOU T = 1.23 + 1.23

RADJ

51.1103


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PCB Material Hole

Blind Buried Through holeBlindLayer 1

Layer 2

Layer 3

Layer 4

Layer 5

Layer 6

120x70mm

100x160mm

0.4mm 0.275mm

6

15


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SMD PAD NSMD PAD

PCB Material

Solder resist

Copper

Solder


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I2C

4MB


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START

SD Card Boot?

NAND Flash Boot?

DataFlash Boot?

Download

to RAM

RUN

SAM-BA Boot

Yes

Yes

Yes

No

No

No


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16

196MHz 96MHz


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16


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196MHz

32kHz

32kHz

500Hz

32kHz


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V Core

500Hz 248 2720A

32 kHz

16 MHz

PLLA

PLLB

PRESCALER

Master clock

Processor clock controller

Master

Clock

Divider

PMC_MCKR offset 0x0030

00

01

10

11

CSS PRES MDIV

Divide with 1, 2, 4Divide with 1, 2, 4,

8, 16, 32, 64

Pdynamic aCV2f

Pdynamic

V

C f


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40mA > 80%

70mA


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J15


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Run

Idle Standby Suspend to RAM Power Off

2.5W

80%


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70% 12V 20mA

IBACKLIGHT 3V3 =IBACKLIGHT 12V

1

0.7 = 43

1

0.7 61mA

20mA

3mA 50A

61mA

270mA

780A 360mA


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25

70.9mA

25 19.5mA

240A

5V

80% 100

500mA 500mA

500

0.8 = 625mA

500mA


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625mA

3mA

110mA

88mA

15mA

50MHz 3.5mA 850mA

1.2V

32kHz

V DDBU 3A

25C

90A 0

< 125A 1mA

< 125A

VOUT USBV oltage


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IV O U T =

3

n=1

InUn

efficiencyn

VOUT

+ ILDO

IUSBV OLT AGE =

UVOUTIVOUTefficiency

USBV oltage Vf d

VSDRAM 3.3V 400mA

VCORE 1.2V 70.9mA

VIO 3.3V 850mA

4V

VOU T IOU T 920mA

VOU T VU SB

90%

1000mA

IU SB =

IOUTVOUTefficiency

VU SB=

9204

0.90

5 920mA

500mA

1A

500mA

460mA


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3.3V 1.2V

32


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5V 5V

3.7V 4.10V

V Bat + 0.3V 4.41V

3.3V

3.34

V 3.3V 3.24V

1.2V 1.25V

3.3V 3.26V

1.2V 1.22V

12V 10.3V

5V 4.41V


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VU SB VBAT 5V 0V

0V 3.9V

VIO 36mA 70mA 42mA 32mA

VSDRAM 15mA 110mA 2mA 2mA

VCORE 0mA 60mA 50mA 0mA

VIO VSDRAM

VCORE

VCORE


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VSDRAM 280mA

VCORE 70.9mA

VIO 225mA


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VSDRAM 280mA

VCORE 58.5mA

VIO 120mA


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I2C

3V3LDO


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http://www.atmel.com/dyn/resources/prod_documents/PLL_LFT_filter_CALCULATOR_AT91.ziphttp://www.atmel.com/dyn/resources/prod_documents/PLL_LFT_filter_CALCULATOR_AT91.ziphttp://elprint.se/index.php/pages/59http://elprint.se/index.php/pages/59


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http://wiki.openmoko.org/index.php?title=Neo_FreeRunner_Hardware&oldid=48606http://wiki.openmoko.org/index.php?title=Neo_FreeRunner_Hardware&oldid=48606http://arm.com/products/licensing/index.htmlhttp://arm.com/products/licensing/index.htmlhttp://www.arm.com/markets/mobile_solutions/app.htmlhttp://www.arm.com/markets/mobile_solutions/app.htmlhttp://linuxdevices.com/articles/AT7065740528.htmlhttp://www.alternatezone.com/electronics/files/PCBDesignTutorialRevA.pdfhttp://www.alternatezone.com/electronics/files/PCBDesignTutorialRevA.pdfhttp://www.linuxdevices.com/http://www.linuxdevices.com/http://www.ddj.com/embedded/193400975http://www.ddj.com/embedded/193400975http://www.eu.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.tar.bz2http://www.eu.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.tar.bz2http://maxim.org.za/AT91RM9200/2.6/2.6.25-at91.patch.gzhttp://maxim.org.za/AT91RM9200/2.6/2.6.25-at91.patch.gzhttp://http//docs.openmoko.org/trac/browser/trunk/src/target/kernel/patches/gta01-jbt6k74.patch?rev=1883http://http//docs.openmoko.org/trac/browser/trunk/src/target/kernel/patches/gta01-jbt6k74.patch?rev=1883


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I2C


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1.2V

1.2V


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Documents

Power Management in Embedded ARM HW Integrated With Embedded Linux