LM5122QMH/NOPB
TEXAS INSTRUMENTS LM5122QMH/NOPB 直流/直流控制器, 多相, 4.5V至65V, 1路输出, 同步升压, 975kHz, 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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- 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.
