參數(shù)資料
型號(hào): IRU3146CF
廠商: International Rectifier
英文描述: DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND AUTO-RESTART
中文描述: 雙同步PWM控制器,帶有均流電路和自動(dòng)重新啟動(dòng)
文件頁數(shù): 3/30頁
文件大?。?/td> 528K
代理商: IRU3146CF
IRU3146
3
Rev. 1.1
6/25/04
www.irf.com
PARAMETER
Soft-Start Section
Charge Current
Power Good Section
V
SENS1
Lower Trip Point
V
SENS2
Lower Trip Point
PGood Output Low Voltage
Error Amp Section
Fb Voltage Input Bias Current
Transconductance 1
Transconductance 2
Error Amp Source/Sink Current
Input Offset Voltage for PWM1/2
VP2 Voltage Range
SYM TEST CONDITION MIN TYP MAX UNITS
Oscillator Section
Frequency
Ramp Amplitude
Synch Frequency Range
Synch Pulse Duration
Synch High Level Threshold
Synch Low Level Threshold
V
OUT3
Internal Regulator
Output Voltage
Output Current
Protection Section
OVP Trip Threshold
OVP Fault Prop Delay
Current Limit Threshold
Current Source
Hiccup Duty Cycle
Hiccup High Level Threshold
Hiccup Low Level Threshold
Output Drivers Section
Rise Time
Fall Time
Dead Band Time
Max Duty Cycle
Min Duty Cycle
Min Pulse Width
Thermal Shutdown Trip Point
Thermal Shutdown Hysteresis
Note 1
: Guaranteed by design but not tested for production.
SS=0V
V
SENS1
Ramping Down
V
SENS2
Ramping Down
I
SINK
=2mA
SS=3V
Fb to V
REF
Note1
Rt
(SET)
to 30K
Note1
20% above free running freq
Note1
Note1
Output forced to 1.125V
REF,
Note1
Hiccup pin pulled high, Note1
Note1
C
L
=1500pF, Figure 2
C
L
=1500pF, Figure 2
Figure 2
Fb=0.6V, F
SW
=300KHz
Fb=1V
F
SW
=300KHz, Note1
Note 1
25
0.9
V
REF
0.9
V
REF
0.1
-0.1
100
0
1.25
300
6.2
1.15
V
REF
20
5
18
25
50
85
0
140
20
μ
A
V
V
V
μ
A
μ
mho
μ
mho
μ
A
mV
V
KHz
V
KHz
ns
V
V
V
mA
V
μ
s
μ
A
%
V
V
ns
ns
ns
%
%
ns
C
C
SS
IB
PG
FB1L
PG
FB2H
I
FB1
g
m1
g
m2
V
OS(ERR)2
VP2
Freq
V
RAMP
OVP
OCSet
T
r
T
f
T
DB
D
MAX
D
MIN
Puls(min)
20
0.8
V
REF
0.8
V
REF
1400
1400
60
-5
0.8
255
200
2
5.9
50
1.1
V
REF
16
2
32
0.95
V
REF
0.95
V
REF
0.5
-0.5
2300
2300
140
+5
1.5
345
800
0.8
6.7
1.2
V
REF
5
24
0.8
50
50
100
150
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