Datasheet Texas Instruments LM5023MM-2/NOPB — 数据表

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Design LM5023
SNVS961E – APRIL 2013 – REVISED JANUARY 2016 LM5023 AC-DC Quasi-Resonant Current Mode PWM Controller
1 Features 3 Description The LM5023 is a quasi-resonant pulse width
modulated (PWM) controller which contains all of the
features needed to implement a highly efficient offline power supply. The LM5023 uses the transformer
auxiliary winding for demagnetization detection to
ensure critical conduction mode (CrCM) operation.
The LM5023 features a hiccup mode for overcurrent
protection with an auto restart to reduce the stress on
the power components during an overload. A skipcycle mode reduces power consumption at light loads
for energy conservation applications (ENERGY
STARВ®, CEPCP, and so forth). The LM5023 also
uses the transformer auxiliary winding for output
overvoltage protection (OVP); if an OVP fault is
detected the LM5023 latches off the controller. 1 Critical Conduction Mode
Peak-Current Mode Control
Skip-Cycle Mode for Low-Standby Power …