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NCP13992AADR2G

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NCP13992
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7
ELECTRICAL CHARACTERISTICS
(For typical values Tj = 25°C, for min/max values Tj = −40°C to +125°C, Vcc = 12 V unless otherwise noted)
Symbol UnitMaxTypMinPinRating
QUIET−SKIP PARAMETERS
t
LAST_ML_PATTERN
The portion of previous MU on−time that is place for last ML
pulse in pattern
12 − 50 − %
t
LAST_ML_SKIP
The portion of previous MU on−time that is place for last ML
pulse before the LL or skip mode is activated
12 − 50 − %
t
GEAR_UP
Skip burst off−time duration that is needed to increase num-
ber of skipped valleys between following patterns
12, 14 − 5 − ms
t
GEAR_DOWN
Skip burst on−time duration that is needed to decrease
number of skipped valleys between following patterns
12, 14 − 15 − ms
t
VALLEY_WD
Time duration to force valley count logic if valley is not de-
tected
12, 14 4.5 5 5.5
ms
t
QS_timer
Quiet Timer duration 12, 14 − 5 − ms
N
QS_1/4
Number of patterns adjustment when bust period is shorter
than ¼ of QS_timer duration
12, 14 − 2 − −
N
QS_2/4
Number of patterns adjustment when bust period is longer
than ¼ and shorter than 2/4 of QS_timer duration
12, 14 − 1 − −
N
QS_3/4
Number of patterns adjustment when bust period is longer
than 2/4 and shorter than 3/4 of QS_timer duration
12, 14 − 0 − −
N
QS_4/4
Number of patterns adjustment when bust period is longer
than 3/4 and shorter than 4/4 of QS_timer duration
12, 14 − 0 − −
N
QS_INF
Number of patterns adjustment when bust period is longer
than QS_timer duration
12, 14 − −1 − −
N
PATTERN_INIT
Initial number of patterns placed when LL or skip mode is
activated
12, 14 − 1 − −
N
LL_blank
Number of MU pulses during which FB_LL_IN cmp is
blanked once VFB > VFB_LL_OUT
14 − 60 − −
FB FREEZE INPUT
I
FB_Freeze
FB Freeze pin current source 4 18 20 22
mA
C
FB_Freeze_LOAD_MAX
Maximum loading capacitance for FB Freeze pin voltage
filtering (Note 2)
4 − − 10 nF
CURRENT SENSE INPUT SECTION
t
pd_CS
On−time comparator delay to Mupper driver turn off
V
FB
= 2.5 V, V
CS
goes up from –2.5 V to 2.5 V with rising
edge of 100 ns
5, 6 − − 250 ns
I
CS_LEAKAGE
Current sense input leakage current for V
CS
= ± 3 V 6 − − ±1
mA
V
CS_OFFSET
Current sense input offset voltage 6 160 200 240 mV
t
LEB
Leading edge blanking time of the on−time comparator
output
5, 6, 14 360 440 540 ns
LFFGAIN Line Feed Forward current source transconductance
(V
VBULK/PFC_FB
> V
BO
)
3, 6 − 0 −
mA/V
FAULTS AND AUTO−RECOVERY TIMER
t
TON_MAX
Maximum on−time clamp 12, 14 7.3 7.7 8.4
ms
N
TON_MAX_COUNTER
Number of TON_MAX events to confirm fault 12,14 − 1 − −
t
FB_FAULT_TIMER
FB fault timer duration − 160 200 240 ms
V
FB_FAULT
FB voltage when FB fault is detected 5 4.5 4.7 4.9 V
N
CS_FAULT_COUNTER
Number of CS_fault cmp. pulses to confirm CS fault − − 5 − −
V
CS_FAULT
CS voltage when CS fault is detected (NCP13992xA) 6 2.5 2.7 2.9 V
NCP13992
www.onsemi.com
8
ELECTRICAL CHARACTERISTICS
(For typical values Tj = 25°C, for min/max values Tj = −40°C to +125°C, Vcc = 12 V unless otherwise noted)
Symbol UnitMaxTypMinPinRating
FAULTS AND AUTO−RECOVERY TIMER
t
A−REC_TIMER
Auto−recovery duration (common timer for all fault condition) − 0.8 1 1.2 s
BROWN−OUT PROTECTION
V
BO
Brown−out turn−off threshold 3 0.965 1.000 1.035 V
I
BO
Brown−out hysteresis current, V
VBULK/PFC_FB
< V
BO
3 4.1 5.0 5.7
mA
V
BO_HYST
Brown−Out comparator hysteresis 3 5 12 25 mV
I
BO_BIAS
Brown−Out input bias current 3 − − 0.05
mA
t
BO_FILTR
BO filter duration 3 10 20 30
ms
RAMP COMPENSATION
RC
GAIN
Ramp compensation gain − 58 82 108
mV/ms
t
RC_SHIFT
Ramp compensation time shift − − 0.4 −
ms
TEMPERATURE SHUTDOWN PROTECTION
T
TSD
Temperature shutdown T
J
going up − − 124 − °C
T
TSD_HYST
Temperature shutdown hysteresis − − 30 − °C
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
2. Guaranteed by design.
3. Minimal resistance connected in series with bootstrap diode is 3.3 W
IC OPTIONS
Option FB fault
FB fault
source
Cumulative
FB fault timer/
counter
CS_FAULT TON_MAX OVP OTP
OVP/OTP bias
during skip
NCP13992AA Auto−recovery Timer NO Auto−recovery Auto−recovery Latch Auto−recovery ON
Option
PFC_MODE
skip status
Skip mode
Dead time
control
Dead time fault BO status
Ramp comp
status
Dedicated
Soft_start_-
seq
NCP13992AA ON Quiet Skip Auto−recovery Active OFF ON Without ramp
shift
ON
ORDERING INFORMATION
Device Package Marking Package Shipping
†
NCP13992AADR2G NCP13992AA SOIC−16, Less Pin 2 and 13 (Pb−free) 2500 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
NCP13992
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9
VCC Management with High−voltage Startup Current
Source
The NCP13992 controller features a HV startup current
source that allows fast startup time and extremely low
standby power consumption. Two startup current levels
(I
start1
and I
start2
) are provided by the system for safety in
case of short circuit between VCC and GND pins. In
addition, the HV startup current source features a dedicated
over−temperature protection to prevent IC damage for any
failure mode that may occur in the application. The HV
startup current source is primarily enabled or disabled based
on V
CC
level. The startup HV current source can be also
enabled by BO_OK rising edge, auto−recovery timer end
and TSD end event. The HV startup current source charges
the VCC capacitor before IC start−up.
Figure 4. Internal Connection of the VCC Management Block
The NCP13992 controller disables the HV startup current
source once the VCC pin voltage level reaches V
CC_ON
threshold – refer to Figure 4. The application then starts
operation and the auxiliary winding maintains the voltage
bias for the controller during normal and skip−mode
operating modes. The IC operates in so called Dynamic Self
Supply (DSS) mode when the bias from auxiliary winding
is not sufficient to keep the V
CC
voltage above V
CC_OFF
threshold (i.e. V
CC
voltage is cycling between V
CC_ON
and
V
CC_OFF
thresholds with no driver pulses on the output
during positive V
CC
ramp). Please refer to Figure 23 through
Figure 25 to find an illustration of the NCP13992 VCC
management system under all operating conditions/modes.
The HV startup current source features an independent
over–temperature protection system to limit I
start2
current
when the die temperature reaches 130°C. At this
temperature, I
start2
will be progressively to prevent the die
temperature from rising above 130°C.
Brown−out Protection − VBULK/PFC FB Input
Resonant tank of an LLC converter is always designed to
operate within a specific bulk voltage range. Operation
below minimum bulk voltage level would result in current
and temperature overstress of the converter power stage.
The NCP13992 controller features a VBULK/PFC FB input
in order to precisely adjust the bulk voltage turn−ON and
turn−OFF levels. This Brown−Out protection (BO) greatly
simplifies application level design.
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NCP13992AADR2G

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Buy NCP13992AADR2G
Manufacturer:
ON Semiconductor
Description:
AC/DC Converters HIGH PERF CURRENT
Lifecycle:
New from this manufacturer.
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