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Design LM5022-Q1
SNVSAG9 – MARCH 2016 LM5022-Q1 2.2MHz, 60 V Low-Side Controller For Boost and SEPIC
1 Features 3 Description The LM5022-Q1 is a high voltage low-side N-channel
MOSFET controller ideal for use in boost and SEPIC
regulators. It contains all of the features needed to
implement single-ended primary topologies. Output
voltage regulation is based on current-mode control,
which eases the design of loop compensation while
providing inherent input voltage feed-forward. The
LM5022-Q1 includes a start-up regulator that
operates over a wide input range of 6 V to 60 V. The
PWM controller is designed for high-speed capability
including an oscillator frequency range up to 2.2 MHz
and total propagation delays less than 100 ns.
Additional features include an error amplifier,
precision reference, line undervoltage lockout, cycleby-cycle current limit, slope compensation, soft-start,
external synchronization capability, and thermal …
