ncp1396 ON Semiconductor, ncp1396 Datasheet - Page 2

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

PIN FUNCTION DESCRIPTION
Soft-
start
R19
Pin No.
C9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
HV
U2A
fmax
R9
Timer
C8
R14
FB
Selection
Slow Fault
Pin Name
Fast Fault
Mupper
Mlower
Skip
Ctimer
Vboot
Fmax
Css
Gnd
U3A
Vcc
BO
DT
HB
FB
Rt
-
R18
C10
OVP
R7
Input
Fast
BO
R13
R17
Half-bridge connection
Supplies the controller
Rt
Quick fault detection
Slow fault detection
DT
Frequency clamp
High side output
Low side output
Timing resistor
Analog ground
Timer duration
Bootstrap pin
R6
Brown-Out
Dead-time
Soft-start
Feedback
Function
1
2
3
4
5
6
7
8
-
Figure 1. Typical Application Example
D3
U5
NCP1396A, NCP1396B
C11
9
R8
16
15
14
12
11
10
http://onsemi.com
Select the soft-start duration
A resistor sets the maximum frequency excursion
Sets the timer duration in presence of a fault
Connecting a resistor to this pin, sets the minimum oscillator frequency
reached for VFB = 1 V
Detects low input voltage conditions. When brought above Vlatch, it fully
latches off the controller.
Injecting current in this pin increases the oscillation frequency up to Fmax.
A simple resistor adjusts the dead-time width
Fast shut-down pin. Upon release, a clean startup sequence occurs. Can be
used for skip cycle purposes.
When asserted, the timer starts to countdown and shuts down the controller
at the end of its time duration.
-
Drives the lower side MOSFET
The controller accepts up to 20 V
-
Connects to the half-bridge output
Drives the higher side MOSFET
The floating V
+
C7
D8
Slow Input
R24
2
R21
R20
R22
C12
CC
C14
supply for the upper stage
R10
R11
D9
M1
M2
Pin Description
D7
L1
+
C6
R16
C13
R23
T1
C1
D4
D1
D2
U1
U2B
C2
+
R3
R4
FB
R5
C4
C3
R1
OVP
U3B
R12
R2
Vout
D6