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ISL97636
compensation network is a series Rc, Cc1 network from
COMP pin to ground and an optional Cc2 capacitor
connected to the COMP pin. The Rc sets the high frequency
integrator gain for fast transient response and the Cc1 sets
the integrator zero to ensure loop stability. For most
applications, Rc is in the range of 200 Ω to 3k Ω and Cc1 is in
the range of 27nF to 37nF. Depending upon the PCB layout,
a Cc2, in range of 100nF, may be needed to create a pole to
cancel the output capacitor ESR’s zero effect for stability.
The ISL97636 evaluation board is configured with Rc1 of
500 Ω , Cc1 of 33nF, and Cc2 of 0, which achieves stability. In
the actual applications, these values may need to be tuned
empirically but the recommended values are usually a good
starting point.
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
16
FN6570.0
May 9, 2008
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