NCP4303AMNTWG ON Semiconductor, NCP4303AMNTWG Datasheet - Page 22

• Manufacturer Part Number: NCP4303AMNTWG
• Description: Power Switch ICs - Power Distribution SEC SIDE SYNC RECT DRV
• Manufacturer: ON Semiconductor

Specifications of NCP4303AMNTWG

• Product Category: Power Switch ICs - Power Distribution

to 300 ns and minimum T
prevent any potential issues with the minimum T
T
off time blanking periods. With NCP4303 it is possible to
range it is necessary to have very short minimum on time and
off time periods in order to reach the required maximum
operating frequency. However, when a LLC converter
operates under low frequency, the minimum off time period
off
The absolute minimum T
Some applications may require adaptive minimum on and
In LLC applications with a very wide operating frequency
Figure 52. Possible Connection for Min Toff Prolongation in LLC Applications with Wide Operating Frequency
input being shorted to GND.
off
on
Figure 51. Possible Connection for Min T
duration to 600 ns in order to
duration is internally clamped
on
http://onsemi.com
and/or
Range
22
modulate blanking periods by using an external NPN
transistor – refer to Figure 51. The modulation signal can be
derived based on the load current or feedback regulator
voltage.
may then be too short. To overcome possible issues with the
LLC operating under low line and light load conditions, one
can prolong the minimum off time blanking period by using
resistors R
MOSFET drain – refer to Figure 52.
on
and T
drain1
off
and R
Modulation
drain2
connected from the opposite SR