Datasheet Texas Instruments LM25119QPSQ/NOPB — 数据表

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Design LM25119, LM25119-Q1
SNVS680H – AUGUST 2010 – REVISED MAY 2016 LM25119, LM25119-Q1 Wide Input Range, Dual Synchronous Buck Controller
1 Features 3 Description The LM25119 device is a dual synchronous buck
controller
intended
for
step-down
regulator
applications from a high voltage or widely varying
input supply. The control method is based upon
current mode control using an emulated current ramp.
Current mode control provides inherent line
feedforward, cycle-by-cycle current limiting and easeof-loop compensation. The use of an emulated
control ramp reduces noise sensitivity of the pulsewidth modulation circuit, allowing reliable control of
very small duty cycles necessary in high input voltage
applications.
The …