NCP1392BDR2G ON Semiconductor, NCP1392BDR2G Datasheet - Page 10

• Manufacturer Part Number: NCP1392BDR2G
• Description: HV HALF-BRIDGE DRIVER
• Manufacturer: ON Semiconductor
• Type: High Side/Low Sider
• Series: -r

Specifications of NCP1392BDR2G

• Rise Time: 40 ns
• Fall Time: 20 ns
• Supply Voltage (min): 8 V
• Mounting Style: SMD/SMT
• Bridge Type: Half Bridge
• Number Of Drivers: 2
• Number Of Outputs: 2
• Input Type: Non-Inverting
• On-state Resistance: -
• Current - Output / Channel: -
• Current - Peak Output: 1A
• Voltage - Supply: 16V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

which is proportional to the current flowing out from the
Rt pin. The discharging current I
on this capacitor reaches 2.5 V. The output drivers are
disabled during discharge period so the dead time length is
given by the discharge current sink capability. Discharge
sink is disabled when voltage on the timing capacitor
reaches zero and charging cycle starts again. The charging
current and thus also whole oscillator is disabled during the
PFC delay period to keep the IC consumption below 400 mA.
resistor value. This frequency is reached if there is no
optocoupler or current feedback action and soft start period
The internal timing capacitor Ct is charged by current
The minimum switching frequency is given by the Rt
C
R
soft−start
soft−start
R
t
R
t
Figure 22. The Internal Current Controlled Oscillator Architecture
Delay
R
C
+
−
DT
fstart
SS
is applied when voltage
NCP1392
+
−
R
t
Figure 23. Typical Rt Pin Connection
V
R
ref
t
From PFC Delay
Rt
V
DD
http://onsemi.com
R
C
fmax
t
Voltage Feedback
10
(to secondary
voltage regulator)
This is valuable for applications that are supplied from
auxiliary winding and V
energy during PFC delay period.
it is necessary to adjust minimum operating frequency with
high accuracy. The designer also needs to limit maximum
operating and startup frequency. All these parameters can be
adjusted using few external components connected to the Rt
pin as depicted in Figure 23.
has been already finished. The maximum switching
frequency excursion is limited by the Rf
that the F
I
For the resonant applications and light ballast applications
DT
max
+
−
R
TLV431
D1
value is influenced by the optocoupler
V
fmax
ref
Current Feedback
R
−OCP
+
−
comp
Reset
PON
CC
(to primary
current sensor)
capacitor is supposed to provide
V
C
CC
comp
R
From EN
Cmp.
S
D
R
bias
CLK
Q
Q
max
selection. Note
A
B
Dead
Time