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LM5034,pdf datasheet (High Vol
消耗积分:5 |
格式:rar |
大小:555 |
2009-09-29
张燕
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The LM5034 dual current mode PWM controller contains all
the features needed to control either two independent
forward/active clamp dc/dc converters or a single high current
converter comprised of two interleaved power stages.
The two controller channels operate 180° out of phase
thereby reducing input ripple current. The LM5034 includes a
startup regulator that operates over a wide input range up to
100V and compound (bipolar + CMOS) gate drivers that
provide a robust 2.5A peak sink current. The adjustable
dead-time of the active clamp gate drivers and adjustable
maximum PWM duty cycle reduce stress on the primary side
MOSFET switches. Additional features include programmable
line under-voltage lockout, cycle-by-cycle current
limit, hiccup mode fault operation with adjustable restart
delay, PWM slope compensation, soft-start, and a 2 MHz
capable oscillator with synchronization capability.
the features needed to control either two independent
forward/active clamp dc/dc converters or a single high current
converter comprised of two interleaved power stages.
The two controller channels operate 180° out of phase
thereby reducing input ripple current. The LM5034 includes a
startup regulator that operates over a wide input range up to
100V and compound (bipolar + CMOS) gate drivers that
provide a robust 2.5A peak sink current. The adjustable
dead-time of the active clamp gate drivers and adjustable
maximum PWM duty cycle reduce stress on the primary side
MOSFET switches. Additional features include programmable
line under-voltage lockout, cycle-by-cycle current
limit, hiccup mode fault operation with adjustable restart
delay, PWM slope compensation, soft-start, and a 2 MHz
capable oscillator with synchronization capability.
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