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SMM105/205/605/665
ADOC Tutorial and Performance
Summary
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DC-DC
CONVERTER PULSE LOAD TEST RESULTS:
3.3V DC-DC Converter Step Load Response with and
without the ADOC function enabled (Figs 13-14).
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DC_DC
CONVERTER RIPPLE TEST RESULTS:
3.3V DC-DC Converter Output Ripple Voltage with and
without the SMM105 (Figs 15-18).
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Figure
13: Pulsed load (0.4A-8A) Austin 3.3V DC-DC
converter with ADOC Function
Channel 1 (Yellow Trace) = 3.3V DC-DC converter
output voltage, 200mV/Div, AC-Coupled
Channel 2 (Green Trace) = 3.3V DC-DC converter
output current, 2A/Div, DC-Coupled
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Figure
15: 3.3V DC-DC Converter ripple with 8ADC load with
ADOC Function (2uS)
Channel 1 (Yellow Trace) = 3.3V DC-DC converter
output voltage, 50mV/Div, AC-Coupled
Channel 2 (Green Trace) = 3.3V DC-DC converter
output current, 2A/Div, DC-Coupled
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Figure
14: Pulsed load (0.4A-8A) Austin 3.3V DC-DC
converter without ADOC Function
Channel 1 (Yellow Trace) = 3.3V DC-DC converter
output voltage, 200mV/Div, AC-Coupled
Channel 2 (Green Trace) = 3.3V DC-DC converter
output current, 2A/Div, DC-Coupled
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Figure
16: 3.3V DC-DC Converter ripple with 8ADC load
without ADOC Function (2uS)
Channel 1 (Yellow Trace) = 3.3V DC-DC converter
output voltage, 50mV/Div, AC-Coupled
Channel 2 (Green Trace) = 3.3V DC-DC converter
output current, 2A/Div, DC-Coupled
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SUMMIT
Microelectronics, Inc. reserves the right
to make changes to the products contained
in this publication in order to improve
design, performance or reliability. SUMMIT
Microelectronics, Inc. assumes no
responsibility for the use of any circuits
described herein, conveys no license under
any patent or other right, and makes no
representation that the circuits are free
of patent infringement. Charts and
schedules contained herein reflect
representative operating parameters, and
may vary depending upon a user's specific
application. While the information in this
publication has been carefully checked,
SUMMIT Microelectronics, Inc. shall not be
liable for any damages arising as a result
of any error or omission.
SUMMIT Microelectronics, Inc. does not
recommend the use of any of its products
in life support or aviation applications
where the failure or malfunction of the
product can reasonably be expected to
cause any failure of either system or to
significantly affect their safety or
effectiveness. Products are not authorized
for use in such applications unless SUMMIT
Microelectronics, Inc. receives written
assurances, to its satisfaction, that: (a)
the risk of injury or damage has been
minimized; (b) the user assumes all such
risks; and (c) potential liability of
SUMMIT Microelectronics, Inc. is
adequately protected under the
circumstances.
Revision 1.0 - This document supersedes
all previous. Please check the Summit
Microelectronics, Inc. web site at
www.summitmicro.com
for updates.
I2C is a trademark of Philips
Corporation.
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Copyright
© 2003 SUMMIT MICROELECTRONICS, Inc.
Power Management for Communications™
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