Skip to Main Content
Power Management in Mobile Devices
book

Power Management in Mobile Devices

by Findlay Shearer
April 2011
Intermediate to advanced content levelIntermediate to advanced
336 pages
13h 59m
English
Newnes
Content preview from Power Management in Mobile Devices
193
www.newnespress.com
Power Management Integrated Circuits
capacitors, produces the regulated DC output. The regulator IC compares a portion of the
rectifi
ed DC output with a voltage reference ( V
REF
) and varies the PWM duty cycle to
maintain a constant DC output voltage. If the output voltage wants to increase, the PWM
lowers its duty cycle to reduce the regulated output, keeping it at its proper voltage level.
Conversely, if the output voltage tends to go down, the feedback causes the PWM duty
cycle to increase and maintain the proper output.
V
IN
V
OUT
R
1
R
2
Error
amplifier
Inductor
PWM
Voltage
ref
Schottky
diode
oscillator
Figure 6.9 : Simplifi ed ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Embedded Firmware Solutions: Development Best Practices for the Internet of Th ings

Embedded Firmware Solutions: Development Best Practices for the Internet of Th ings

Jiming Sun, Marc Jones, Stefan Reinauer, Vincent Zimmer
Low Power Emerging Wireless Technologies

Low Power Emerging Wireless Technologies

Reza Mahmoudi, Krzysztof Iniewski

Publisher Resources

ISBN: 9780750679589