ncp1396 ON Semiconductor, ncp1396 Datasheet - Page 24

• Manufacturer Part Number: ncp1396
• Description: High Performance Resonant Mode Controller With High And Low Sides Drivers
• Manufacturer: ON Semiconductor

V
NCP1396 features sufficient hysteresis (3 V typically) to
allow a classical startup method with a resistor connected
to the bulk capacitor. Then, at the end of the startup
sequence, an auxiliary winding is supposed to take over the
controller supply voltage. To the opposite, for applications
where the resonant controller is powered from a standby
power supply, the startup level is 10 V typically and allows
makes sure enough Vgs is available for the upper side
MOSFET. The B and A outputs are delivered by the
internal logic, as Figure 47 testifies. A delay is inserted in
the lower rail to ensure good matching between these
propagating signals.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification
ORDERING INFORMATION
Brochure, BRD8011/D.
NCP1396ADR2G
NCP1396BDR2G
Fault
CC(on)
As described in the data-sheet, two startup levels
The device incorporates an upper UVLO circuitry that
B
A
are available, via two circuit versions. The
Device
Figure 52. The Internal High-voltage Section of the NCP1396
Trigger
Pulse
Delay
NCP1396A, NCP1396B
Shifter
Level
http://onsemi.com
SOIC-16, Less Pin 13
SOIC-16, Less Pin 13
(Pb-Free)
(Pb-Free)
24
Package
for the direct a connection from a 12 V source. Thanks to
this NCP1396B, simple ON/OFF operation is therefore
feasible.
The High-voltage Driver
requiring an external high-voltage diode for the capacitor
refueling path. Figure 52 shows the internal architecture of
the high-voltage section.
portion can go up to 600 VDC and makes the IC perfectly
suitable for offline applications featuring a 400 V PFC
front-end stage.
S
R
The driver features a traditional bootstrap circuitry,
As stated in the maximum rating section, the floating
Q
Q
UVLO
Vboot
Mupper
HB
Vcc
Mlower
GND
2500 Tape & Reel
2500 Tape & Reel
cboot
Shipping†
dboot
+
aux
Vcc
HV