LM5122MHE/NOPB

TEXAS INSTRUMENTS  LM5122MHE/NOPB  直流/直流控制器, 多相, 4.5V至65V, 1路输出, 同步升压, 875kHz, HTSSOP-20

The is a multiphase capable synchronous Boost Controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak current-mode control. current-mode control provides inherent line feed-forward, cycle-by-cycle current limiting and ease of loop compensation. The switching frequency is programmable up to 1MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. User-selectable diode emulation mode also enables discontinuous mode operation for improved efficiency at light load conditions. An internal charge pump allows 100% duty cycle for high-side synchronous switch Bypass operation. A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup mode current limit and adjustable line undervoltage lockout.

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Peak current mode control

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Robust 3A Integrated gate drivers

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Adaptive dead-time control

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Optional diode emulation mode

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Programmable cycle-by-cycle current limit

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Hiccup mode overload protection

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Programmable line UVLO

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Programmable soft-start

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Thermal shutdown protection

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Programmable slope compensation

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Programmable skip cycle mode reduces standby power

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Allows external VCC supply

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Inductor DCR current sensing capability

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Multiphase capability

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Green product and no Sb/Br

Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.