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OB6561 Power Factor Correction
消耗积分:5 |
格式:rar |
大小:434 |
2010-03-01
王璐
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OB6561 is a cost effective high performance
transition-mode (TM) power-factor correction (PFC)
controller IC optimized for pre-regulator
applications.
OB6561 integrates an internal start-up timer, a
simple multiplier for generating a current reference
in sync with input voltage, a zero current detector
(ZCD) to ensure transition mode operation and a
current sensing comparator with built-in leadingedge
blanking.
With ZCD Control, power MOSFET is always
turned on with zero inductor current. Consequently,
transition mode (TM) control achieves lower
switching loss and reduced noise.
transition-mode (TM) power-factor correction (PFC)
controller IC optimized for pre-regulator
applications.
OB6561 integrates an internal start-up timer, a
simple multiplier for generating a current reference
in sync with input voltage, a zero current detector
(ZCD) to ensure transition mode operation and a
current sensing comparator with built-in leadingedge
blanking.
With ZCD Control, power MOSFET is always
turned on with zero inductor current. Consequently,
transition mode (TM) control achieves lower
switching loss and reduced noise.
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