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Número de pieza | NCP1612A3 | |
Descripción | High-Efficiency Power Factor Controller | |
Fabricantes | ON Semiconductor | |
Logotipo | ||
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No Preview Available ! NCP1612A, NCP1612B,
NCP1612A1, NCP1612A2,
NCP1612A3, NCP1612B2
Enhanced, High‐Efficiency
Power Factor Controller
The NCP1612 is designed to drive PFC boost stages based on an
innovative Current Controlled Frequency Fold−back (CCFF)
method. In this mode, the circuit classically operates in Critical
conduction Mode (CrM) when the inductor current exceeds a
programmable value. When the current is below this preset level, the
NCP1612 linearly decays the frequency down to about 20 kHz when
the current is null. CCFF maximizes the efficiency at both nominal
and light load. In particular, the stand-by losses are reduced to a
minimum.
Like in FCCrM controllers, an internal circuitry allows near-unity
power factor even when the switching frequency is reduced. Housed in
a SO−10 package, the circuit also incorporates the features necessary
for robust and compact PFC stages, with few external components.
General Features
• Near-unity Power Factor
• Critical Conduction Mode (CrM)
• Current Controlled Frequency Fold-back (CCFF): Low Frequency
Operation is Forced at Low Current Levels
• On-time Modulation to Maintain a Proper Current Shaping in CCFF
Mode
• Skip Mode Near the Line Zero Crossing
• Fast Line/Load Transient Compensation
(Dynamic Response Enhancer)
• Valley Turn On
• High Drive Capability: −500 mA/+800 mA
• VCC Range: from 9.5 V to 35 V
• Low Start-up Consumption
• Six Versions: NCP1612A, B, A1, A2, A3 and B2 (see Table 1)
• Line Range Detection
• pfcOK Signal
• This is a Pb-Free Device
www.onsemi.com
SOIC−10
CASE 751BQ
MARKING DIAGRAM
10
1612x
ALYW
G
1
1612x
A
L
Y
W
G
= Specific Device Code
x = A, A1, A2, A3, B or B2
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb-Free Package
PIN CONNECTIONS
FOVP
Feedback
Vcontrol
Vsense
FFcontrol
1
(Top View)
pfcOK
VCC
DRV
GND
CS/ZCD
ORDERING INFORMATION
See detailed ordering and shipping information on page 32 of
this data sheet.
Safety Features
• Separate Pin for Fast Over-voltage Protection (FOVP)
for Redundancy
• Soft Over-voltage Protection
• Brown-out Detection
• Soft-start for Smooth Start-up Operation
(A, A1, A2 and A3 Versions)
• Over Current Limitation
• Disable Protection if the Feedback is Not Connected
• Thermal Shutdown
• Latched Off Capability
• Low Duty-cycle Operation if the Bypass Diode is
shorted
• Open Ground Pin Fault Monitoring
• Saturated Inductor Protection
• Detailed Safety Testing Analysis
(Refer to Application Note AND9079/D)
© Semiconductor Components Industries, LLC, 2016
May, 2016 − Rev. 9
1
Publication Order Number:
NCP1612/D
1 page NCP1612A, NCP1612B, NCP1612A1, NCP1612A2, NCP1612A3, NCP1612B2
VCC
R1 Ipin6
CS/ZCD
Maintain Ipin6
below 5 mA
GND
NCP1612
ESD Diode
2 kW
ESD Diode
CS/ZCD
Circuitry
7.4 V
Figure 2.
Table 3. TYPICAL ELECTRICAL CHARACTERISTICS
(Conditions: VCC = 15 V, TJ from −40°C to +125°C, unless otherwise specified)
Symbol
Rating
START-UP AND SUPPLY CIRCUIT
VCC(on)
Start-up Threshold, VCC increasing:
A, A1, A2 and A3 versions
B and B2 versions
VCC(off)
VCC(HYST)
Minimum Operating Voltage, VCC falling
Hysteresis (VCC(on) − VCC(off))
A, A1, A2 and A3 versions
B and B2 versions
VCC(reset)
VCC level below which the circuit resets
ICC(start)
Start-up Current, VCC = 9.4 V
ICC(op)1
Operating Consumption, no switching (VSENSE pin being grounded)
ICC(op)2
Operating Consumption, 50 kHz switching, no load on DRV pin
CURRENT CONTROLLED FREQUENCY FOLD-BACK
TDT1
TDT2
TDT3
TDT4
Dead-time, VFFcontrol = 2.60 V (Note 6)
Dead-time, VFFcontrol = 1.75 V
Dead-time, VFFcontrol = 1.00 V
Dead-time, VFFcontrol = VSKIP_L + 30 mV (NCP1612A3 Only)
@ 25°C
Over the Temperature Range
IDT1
IDT2
VSKIP−H
FFcontrol Pin current, Vsense = 1.4 V and Vcontrol maximum
FFcontrol Pin current, Vsense = 2.8 V and Vcontrol maximum
FFcontrol pin Skip Level, VFFcontrol rising
All Versions Except NCP1612A3
NCP1612A3
VSKIP−L
FFcontrol pin Skip Level, VFFcontrol falling All Versions Except NCP1612A3
NCP1612A3
HSKIP−L
GATE DRIVE
FFcontrol pin Skip Hysteresis
TR
TF
ROH
ROL
ISOURCE
ISINK
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
Peak source current, VDRV = 0 V (guaranteed by design)
Peak sink current, VDRV = 12 V (guaranteed by design)
Min
9.75
15.80
8.5
0.75
6.00
2.5
−
−
−
−
14
32
34.0
32.0
180
110
−
−
0.55
0.85
50
−
−
−
−
−
−
Typ
10.50
17.00
9.0
1.50
8.00
4.0
20
0.5
2.0
−
18
38
41.5
41.5
200
135
0.75
1.00
0.65
0.90
−
30
20
10
7.0
500
800
Max
11.25
18.20
9.5
−
−
6.0
50
1.0
3.0
0
22
44
45.0
47.0
220
160
0.85
1.05
−
−
−
−
−
−
−
−
−
Unit
V
V
V
V
mA
mA
mA
ms
ms
ms
ms
mA
mA
V
V
mV
ns
ns
W
W
mA
mA
www.onsemi.com
5
5 Page NCP1612A, NCP1612B, NCP1612A1, NCP1612A2, NCP1612A3, NCP1612B2
TYPICAL CHARACTERISTICS
12.0
11.5
11.0
10.5
10.0
9.5
9.0
−50 −30 −10 10 30 50 70 90 110 130
10.00
TJ, JUNCTION TEMPERATURE (°C)
Figure 4. Start-up Threshold, VCC Increasing
(VCC(on)) vs. Temperature (A, A1, A2 and A3
Versions)
9.75
9.50
9.25
9.00
8.75
8.50
8.25
8.00
−50 −30 −10 10 30 50 70 90 110 130
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. VCC Minimum Operating Voltage, VCC
Falling (VCC(off)) vs. Temperature
70
60
50
40
30
20
10
0
−50 −30 −10 10 30 50 70 90 110 130
TJ, JUNCTION TEMPERATURE (°C)
Figure 8. Start-up Current @ VCC = 9.4 V vs.
Temperature
17.6
17.4
17.2
17.0
16.8
16.6
16.4
16.2
16.0
−50 −30 −10 10 30 50 70 90 110 130
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. Start-up Threshold, VCC Increasing
(VCC(on)) vs. Temperature (B and B2 Versions)
2.00
1.75
1.50
1.25
1.00
0.75
0.50
−50 −30 −10 10 30 50 70 90 110 130
TJ, JUNCTION TEMPERATURE (°C)
Figure 7. Hysteresis (VCC(on) − VCC(off)) vs.
Temperature (A, A1, A2 and A3 Versions)
1.50
1.25
1.00
0.75
0.50
0.25
0
−50 −30 −10 10 30 50 70 90 110 130
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. Operating Current, No Switching
(VSENSE Grounded) vs. Temperature
www.onsemi.com
11
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet NCP1612A3.PDF ] |
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