LM5122QMHE/NOPB Datasheet PDF - TI

●The LM5122QMHE/NOPB 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. A 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.

● Bypass (VOUT=VIN) operation

● Peak current-mode control

● Robust 3A integrated gate drivers

● Adaptive dead-time control

● Optional diode emulation mode

● Programmable cycle-by-cycle current limit

● Hiccup mode overload protection

● Programmable line UVLO

● Programmable soft-start function

● Thermal shutdown protection

● 9µA Low shutdown quiescent current

● Programmable slope compensation

● Programmable skip cycle mode reduces standby power

● Allows external VCC supply

● Inductor DCR current sensing capability

● Free-run and synchronizable switching to 1MHz

● 1.2V Voltage reference with ±1% accuracy

● Green product and no Sb/Br