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參數(shù)資料
| 型號(hào)： | NCP1337 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | PWM Current−Mode Controller for Free Running Quasi−Resonant Operation |
| 文件頁數(shù)： | 6/14頁 |
| 文件大小： | 148K |
| 代理商： | NCP1337 |
NCP1337
http://onsemi.com
6
ELECTRICAL CHARACTERISTICS
(continued)
(For typical values T
J
= 25
°
C, for min/max values T
J
= 0
°
C to +125
°
C,
Max T
J
= 150
°
C, V
CC
= 11 V, unless otherwise noted.)
Characteristic
Pin
Symbol
Min
Typ
Max
Unit
FEEDBACK SECTION
FB Current under which FAULT is Detected
2
I
FBopen
40
A
FB Current for which Internal Setpoint is 100%
2
I
FB100%
50
A
FB Current above which DRV Pulses are Stopped
2
I
FBrippleIN
220
A
FB Current under which DRV Pulses are Reauthorized after having
reached I
FBrippleIN
FB Current above which FB Pin Voltage is not Regulated anymore
2
I
FBrippleOUT
205
A
2
I
FBregMax
500
A
FB Pin Voltage when I
FBopen
< I
FB
< I
FBregMax
2
V
FB
2.8
3.0
3.2
V
Duration before Entering Protection Mode after FAULT Detection
T
FAULT
80
ms
Internal SoftStart Duration (Up to V
CSLimit
)
T
SS
4.0
ms
Internal SoftSkip Duration (Up to V
CSLimit
)
T
SSkip
300
s
BROWNOUT AND LATCH SECTION
BrownOut Detection Level
1
V
BO
460
500
540
mV
Current Flowing out of Pin 1 when BrownOut Comparator has Toggled
1
I
BO
10
A
Vpin1 Threshold that Disables the Output
1
V
DISABLE
2.8
3.0
3.3
V
Vpin1 Threshold that Activates the Permanent Latch
1
V
LATCH
4.75
5.0
5.25
V
DEMAGNETIZATION DETECTION BLOCK
Current Threshold for Demagnetization Detection
5
I
SOXYth
210
A
Max Voltage on DRV Pin During OFF Time after T
BLANK
(when Sinking 15 mA)
Min Voltage on DRV Pin During OFF Time after T
BLANK
(when Sourcing 15 mA)
Propagation Delay from Demag Detection to Gate ON State
(I
GATE
Slope of 500 A/s)
Blanking Window after Gate OFF State before Detecting
Demagnetization
Timeout on Demag Signal
5
V
DRVlowMAX
1.5
V
5
V
DRVlowMIN
0.6
V
5
T
DMG
180
220
ns
5
T
BLANK
5.5
s
5
T
OUT
8.0
s
Maximum OFF Time
5
MaxT
OFF
35
42
s
Minimum Switching Period
5
MinPeriod
6.8
7.7
8.5
s
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