參數(shù)資料
型號: NCP1562B
廠商: ON SEMICONDUCTOR
英文描述: High Performance Active Active Clamp/Reset PWM Controller Controller(高性能有效Active Clamp/Reset PWM控制器)
中文描述: 高性能主動有源鉗位/復(fù)位PWM控制器控制器(高性能有效有源鉗位/復(fù)位的PWM控制器)
文件頁數(shù): 7/26頁
文件大小: 277K
代理商: NCP1562B
NCP1562A, NCP1562B
http://onsemi.com
7
ELECTRICAL CHARACTERISTICS
(continued)
(V
in
= 48 V, V
AUX
= 12 V, V
UVOV
= 2.3 V, V
EA
= open, V
CSKIP
= 0 V,
V
CS
= 0 V, V
SS
= open, R
T
= 13.3 k , C
AUX
= 10 F, C
T
= 470 pF, C
out1
= C
out2
= 100 pF, C
UVOV
= 0.01 F, C
CSKIP
= 6800 pF,
R
D
= 25 k , R
SYNC
= 5.0 k , C
REF
= 0.1 F, R
FF
= 29.4 k , C
FF
= 470 pF. For typical values T
J
= 25
°
C, for min/max values, T
J
is – 40
°
C to
125
°
C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
CURRENT LIMIT AND THERMAL SHUTDOWN
Cycle–by–Cycle Threshold Voltage (V
out
= 10 V)
NCP1562A
NCP1562B
V
ILIM
191
472
203
495
217
512
mV
Propagation Delay to Output
(V
CS
= V
ILIM
to 1.0 V, LEB Disabled, V
out
= 10 V)
T
J
= 25 C
T
J
= –40 C to 125 C
t
ILIM
78
90
110
ns
Thermal Shutdown Threshold (Junction Temperature Increasing, Note 4)
T
SHDN
160
C
Thermal Shutdown Hysteresis (Temperature Decreasing, Note 4)
T
H
25
C
LEADING EDGE BLANKING
Offset Voltage
V
LEB(offset)
10
mV
Blanking Time
t
LEB
50
80
110
ns
V
EA
Threshold the Disables LEB (Measured together with t
LEB
)
V
LEB(dis)
4.1
V
CYCLE SKIP CURRENT LIMIT MODE
Charge Current (V
CSKIP
= 1.25 V)
I
CSKIP(C)
70
90
111
A
Discharge Current (V
CSKIP
= 1.25 V)
I
CSKIP(D)
6.5
8.6
11
A
Number of Pulses to Exit Cycle Skip Mode
Pulse
CSKIP
3
-
Upper Threshold Voltage (Ramp up V
CSKIP
, V
CS
= 1.0 V)
V
CSKIP(peak)
2.83
3.03
3.24
V
Lower Threshold Voltage (Ramp down V
CSKIP
)
V
CSKIP(valley)
0.39
0.465
0.52
V
Threshold Voltage Hysteresis
V
CSKIP(H)
2.5
V
5.0 V REFERENCE
Output Voltage (I
REF
= 0 mA)
V
REF
4.9
5.0
5.1
V
Load Regulation (I
REF
= 0 to 5.0 mA)
V
REF(Load)
16
50
mV
Line Regulation (V
AUX
= 7.5 to 20 V, I
REF
= 0 mA)
V
REF(line)
10
50
mV
Discharge Current (V
UVOV
= 0 V, V
REF
= 2.5 V)
I
REF(D)
3.8
mA
OSCILLATOR
Frequency
T
J
= 25 C
T
J
= -40 C to 125 C
f
OSC
222
211.2
246
272.2
277.2
kHz
Peak Voltage
V
RTCT(peak)
-
2.95
-
V
Valley Voltage
V
RTCT(valley)
-
2.1
-
V
Discharge Current (V
RTCT
= 2.3 V)
I
RTCT
-
490
-
A
Maximum Operating Frequency (Note 4)
f
MAX
1.0
MHz
Duty Cycle (R
D
= 25 k )
D
58.5
62.0
64.7
%
Adjustable Maximum Duty Cycle (Note 4)
D
MAX
85
-
-
%
4. Guaranteed by design only.
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