NCP1396A, NCP1396B
High Performance Resonant
Mode Controller featuring
High- Voltage Drivers
-
The NCP1396 A/B offers everything needed to build a reliable and
rugged resonant mode power supply. Its unique architecture includes
a 500 kHz Voltage Controlled Oscillator whose control mode brings
flexibility when an ORing function is a necessity, e.g. in multiple
feedback paths implementations. Thanks to its proprietary
high- voltage technology, the controller welcomes a bootstrapped
-
MOSFET driver for half- bridge applications accepting bulk voltages
-
up to 600 V. Protections featuring various reaction times, e.g.
immediate shutdown or timer- based event, brown- out, broken
-
-
opto- coupler detection etc., contribute to a safer converter design,
-
without engendering additional circuitry complexity. An adjustable
deadtime also helps lowering the shoot- through current contribution
-
as the switching frequency increases.
Features
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MARKING
DIAGRAMS
16
1
SO- 16, LESS PIN 13
-
D SUFFIX
CASE 751AM
16
NCP1396xG
AWLYWW
1
High- frequency Operation from 50 kHz up to 500 kHz
-
600 V High- Voltage Floating Driver
-
Selectable Minimum Switching Frequency with
3%
Accuracy
Adjustable Deadtime from 100 ns to 2
ms.
Startup Sequence via an Adjustable Soft- start
-
Brown- out Protection for a Simpler PFC Association
-
Latched Input for Severe Fault Conditions, e.g. Over Temperature
or OVP
Timer- based Input with Auto- recovery Operation for Delayed
-
-
Event Reaction
Enable Input for Immediate Event Reaction or Simple ON/OFF
Control
V
CC
Operation up to 20 V
Low Startup Current of 300
mA
1 A / 0.5 A Peak Current Sink / Source Drive Capability
Common Collector Optocoupler Connection for Easier ORing
Internal Temperature Shutdown
B Version features 10 V V
CC
Startup Threshold
These are Pb- Free Devices
-
Flat Panel Display Power Converters
High Power AC/DC Adapters for Notebooks
Industrial and Medical Power Sources
Offline Battery Chargers
x
A
WL
Y
WW
G
= A or B
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb-
-Free Package
PIN CONNECTIONS
CSS 1
Fmax 2
Ctimer 3
Rt 4
BO 5
FB 6
DT 7
Fast Fault 8
(Top View)
12 VCC
11 Mlower
10 GND
9
Slow Fault
16 Vboot
15 Mupper
14 HB
Typical Applications
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 24 of this data sheet.
Semiconductor Components Industries, LLC, 2010
November, 2010 - Rev. 7
1
Publication Order Number:
NCP1396/D
NCP1396A, NCP1396B
HV
FB
U2A
U3A
1
2
3
4
OVP
R17
R8
R24
R20
M1
R10
C12
D8
R21
R11
Slow Input
D9
M2
L1
R23
+
C6
D4
U5
16
15
14
Vout
D1
+
C2
R4
R12
Rt
5
6
7
12
11
10
R5
FB
R1
OVP
R7
8
9
Fmax
C9
C8
Fast
Input
C10
D3
C11
+
C7
C13
T1
D2
U2B
C4
U3B
D6
D7
C14
R22
R16
C1
U1
R3
C3
R2
R19
Soft-
-
start
R9 R14
Timer
R18
R13
BO
R6
Skip
Selection
DT
Figure 1. Typical Application Example
PIN FUNCTION DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
CSS
Fmax
Ctimer
Rt
BO
FB
DT
Fast Fault
Slow Fault
GND
Mlower
V
CC
-
-
HB
Mupper
Vboot
Function
Soft-
-start
Frequency clamp
Timer duration
Timing resistor
Brown-
-Out
Feedback
Dead-
-time
Quick fault detection
Slow fault detection
Analog ground
Low side output
Supplies the controller
-
-
Half-
-bridge connection
High side output
Bootstrap pin
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
CC
supply for the upper stage
Pin Description
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2
NCP1396A, NCP1396B
Vdd
Temperature
Shutdown
S
D
Q
Clk
R
DT Adj.
50% DC
FF
VCC
Management
Mupper
Q
Vref
V
BOOT
Imin
Vfb
Vfb_off
Vref
Rt
C
I = Imax for Vfb = 5.3 V
I = 0 for Vfb < Vfb_min
Vdd
IDT
+
-
-
+
BO
Reset
Imax
Vfb = 5
Vdd
Vref
Itimer
Fmax
If FAULT Itimer else 0
Timer
PON
Reset
SS
Fault
Timeout
Fault
Fast
Fault
UVLO
HB
+
-
-
+
Vref
Level
Shifter
Timeout
Fault
NC
Vdd
PON
Reset
Fault
V
CC
Fault
ISS
SS
FB
G=1
+
-
-
Mlower
> 0 only
V = V(FB) - Vfb_min
-
Vdd
RFB
+
Vfb_fault
+
-
-
+
Vfb_min
-
-
Vref
+
Deadtime
Adjustment
+
Vref Fault
20 ns Noise
Filter
GND
Fast
Fault
DT
Vdd
IDT
IBO
20
ms
Noise
Filter
Q
S
20
ms
Noise
Filter
Q
R
PON Reset
BO
+
VBO
+
-
-
+
Vlatch
+
-
-
Slow
Fault
+
Vref Fault
+
-
Figure 2. Internal Circuit Architecture
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3
NCP1396A, NCP1396B
MAXIMUM RATINGS
Rating
High Voltage bridge pin, pin 14
Floating supply voltage
High side output voltage
Low side output voltage
Allowable output slew rate
Power Supply voltage, pin 12
Maximum voltage, all pins (except pin 11 and 10)
Thermal Resistance - Junction- -Air, SOIC version
-
-to-
Operating Junction Temperature Range
Maximum Junction Temperature
Storage Temperature Range
ESD Capability, Human Body Model (All pins except HV Pins)
ESD Capability, Machine Model
Symbol
VBRIDGE
VBOOT-
-
VBRIDGE
VDRV_HI
VDRV_LO
dVBRIDGE/dt
V
CC
-
-
R
θJA
T
J
T
JMAX
T
STG
-
-
-
-
Value
- to 600
-1
0 to 20
VBRIDGE-
-0.3 to
VBOOT+0.3
-
-0.3 to V
CC
+ 0.3
50
20
-
-0.3 to 10
130
-
-40 to +125
+150
-
-60 to +150
2
200
Unit
V
V
V
V
V/ns
V
V
C/W
C
C
C
kV
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000V per JESD22-
-A114-
-B
Machine Model Method 200V per JESD22-
-A115-
-A.
2. This device meets latch-
-up tests defined by JEDEC Standard JESD78.
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4
NCP1396A, NCP1396B
ELECTRICAL CHARACTERISTICS
(For typical values T
J
= 25C, for min/max values T
J
= -
-40C to +125C, Max T
J
= 150C, V
CC
= 12 V, unless otherwise noted.)
Characteristic
SUPPLY SECTION
Turn-
-on threshold level, V
CC
going up – A version
Turn-
-on threshold level, V
CC
going up – B version
Minimum operating voltage after turn-
-on
Startup voltage on the floating section
Cutoff voltage on the floating section
Startup current, V
CC
< VCC
ON
V
CC
level at which the internal logic gets reset
Internal IC consumption, no output load on pin 15/14 – 11/10, Fsw =
300 kHz
Internal IC consumption, 1 nF output load on pin 15/14 – 11/10, Fsw =
300 kHz
Consumption in fault mode (All drivers disabled, V
CC
> V
CC(min)
)
VOLTAGE CONTROL OSCILLATOR (VCO)
Characteristic
Minimum switching frequency, Rt = 18 kΩ on pin 4, Vpin 6 = 0.8 V, DT =
300 ns
Maximum switching frequency, Rfmax = 1.3 kΩ on pin 2, Vpin 6 > 5.3 V,
Rt = 18 kΩ, DT = 300 ns
Feedback pin swing above which
Δf
= 0
Operating duty-
-cycle symmetry
Delay before any driver re-
-start in fault mode
FEEDBACK SECTION
Characteristic
Internal pull-
-down resistor
Voltage on pin 6 below which the FB level has no VCO action
Voltage on pin 6 below which the controller considers a fault
DRIVE OUTPUT
Characteristic
Output voltage rise-
-time @ CL = 1 nF, 10-
-90% of output signal
Output voltage fall-
-time @ CL = 1 nF, 10-
-90% of output signal
Source resistance
Sink resistance
Dead time with R
DT
= 10 kΩ from pin 7 to GND
Maximum dead-
-time with R
DT
= 82 kΩ from pin 7 to GND
Minimum dead-
-time, R
DT
= 3 kΩ from pin 7 to GND
Leakage current on high voltage pins to GND
Pin
15-
-14/1
1-
-10
15-
-14/1
1-
-10
15-
-14/1
1-
-10
15-
-14/1
1-
-10
7
7
7
14,
15,16
Symbol
T
r
T
f
R
OH
R
OL
T_dead
T_dead-
-max
T_dead-
-min
IHV_LEAK
Min
-
-
-
-
-
-
-
-
250
-
-
-
-
-
-
Typ
40
20
13
5.5
300
2
100
-
-
Max
-
-
-
-
-
-
-
-
340
-
-
-
-
5
Unit
ns
ns
Ω
Ω
ns
ms
ns
mA
Pin
6
6
6
Symbol
Rfb
Vfb_min
Vfb_off
Min
-
-
-
-
-
-
Typ
20
1.2
0.6
Max
-
-
-
-
-
-
Unit
kΩ
V
V
Pin
4
2
6
11-
-15
-
-
Symbol
Fsw min
Fsw max
FBSW
DC
Tdel
Min
58.2
425
-
-
48
-
-
Typ
60
500
5.3
50
20
Max
61.8
575
-
-
52
-
-
Unit
kHz
kHz
V
%
ms
0C < T
J
< +125C
-
-40C < T
J
< +125C
12
12
12
16-
-14
16-
-14
12
12
12
12
12
VCC
ON
VCC
ON
VCC
(min)
Vboot
ON
Vboot
(min)
Istartup
VCC
reset
ICC1
ICC2
ICC3
12.3
9.5
8.5
8
7.4
-
-
-
-
-
-
-
-
-
-
-
-
13.4
10.5
9.5
9
8.4
-
-
-
-
6.5
4
11
1.2
14.3
11.5
10.5
10
9.4
300
350
-
-
-
-
-
-
-
-
V
V
V
V
V
mA
V
mA
mA
mA
Pin
Symbol
Min
Typ
Max
Unit
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