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Acrobat Distiller 19.0 (Windows)
BroadVision, Inc.
2019-10-23T09:51:47+08:00
2019-10-23T09:50:43+08:00
2019-10-23T09:51:47+08:00
application/pdf
EVBUM2568DB - Implementing High Power Adapter Evaluation Board User's Manual
ON Semiconductor
This evaluation board user’s manual provides elementary
information about a high efficiency, low light load power consumption
reference design that is targeting power adapter or similar type of
equipments that accepts 19.5 V.
The design utiltizes NCP1616 for PFC front stage to assure unity
power factor, NCP13992 for current mode LLC power stage, and
FAN6248 for secondary side synchronous rectification to maximize
efficiency.
The NCP1616 is a high voltage PFC controller with CrM operation.
Additionally, it has an innovative Current Controlled Frequency
Foldback (CCFF) method to maximizes the efficiency at both nominal
and light load condition.
The NCP13992 is a current mode controller for half bridge resonant
converter featuring 600 V gate drivers, high−frequency operation
from 20 kHz up to 750 kHz, automatic dead−time with maximum
dead−time clamp, and skip mode operation for improved light load
efficiency.
The secondary side controller FAN6248 is an advanced
synchronous rectifier controller that is optimized for LLC resonant
converter topology with minimum external components. It has two
driver stages for driving the SR MOSFETs which are rectifying the
output current of the secondary transformer. These two gate driver
stages have dedicated sense inputs and operate independently each
other.
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