AN8091S Datasheet PDF - Panasonic Semiconductor

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AN8091S
Panasonic Semiconductor

Part Number AN8091S
Description Overvoltage Protective Circuit Incorporated Switching Power Supply
Page 16 Pages


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AN8091, AN8091S
Overvoltage Protective Circuit Incorporated Switching Power Supply
s Overview
The AN8091 and AN8091S are equipped with various pro-
tection functions such as from overcurrent and overvoltage,
which can raise the reliability of the power supply, realizing the
high-speed control up to 500kHz.
s Features
The PWM control frequency of up to 500kHz and miniatur-
ization realized.
The power MOS FET of large capacitance directly control-
lable
Built-in overcurrent protective function for two systems of
positive side detection and negative one, and intermittent
operation function for protection when overcurrent condition
proceeds further
ON/OFF function allowing the power supply to be started or
stopped by the external signal, and current control function
required for the secondary side control incorporated
Package : 16-lead DIP for the AN8091, 20-lead SOP for the
AN8091S
Overvoltage protection circuit built-in
AN8091
Unit : mm
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
6.2±0.3
1.1±0.25
5.2±0.25 3.05±0.25
3—15˚ 7.62±0.25
0.30+–00.1.05
AN8091S
DIP016-P-0300D
Unit : mm
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
(0.4)
5.5±0.3
7.6±0.3
SOP020-P-0300C



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s Block Diagram
VIN
PC.
20 VCC
16
ON/
OFF 7
PC. PC.
5 Remote
IIN
8
10
NC
9
7
8
6
OVP
CF 12
10
TON 9 11
TOFF
11
13
5
Latch
Output Cut off
DC
Triangular
Wave OSC
CLK
Control Signal
PWM
Clock
Timer
+CLM
Latch
OSC
VF
Voltage Control
Meet to VF
Terminal Voltage
12
–CLM
Latch
4 19 18
4 15 14
6 15 16
CT 14 VF
CLM+ CLM–
17
13
GND
1
1
VC
2
2
To switching
Device
VOUT
3 VOUT–COM
3
Fin
Number in is Pin No. for AN8091S.
s Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Rating
Supply voltage
VCC 31
Collector terminal allowable applied voltage
Maximum continuous output current
VC
IOmax
31
±150
TON terminal allowable applied voltage
ITON
–1
TOFF terminal allowable applied voltage
ITOFF
–1
Power dissipation Ta <= 25˚C
AN8091
PD
AN8091S
Allowable joint temperature
Operating ambient temperature
Storage temperature
Tj
Topr
Tstg
150
–30 to +85
–55 to +150
Note) For surface mounting on the glass epoxy board (50 × 50 × 0.45mm)
1736
1500
s Recommended Operating Range (Ta=25˚C)
Parameter
Symbol
Operating supply voltage
VCC
Range
Stop voltage to 30V
Unit
V
V
mA
mA
mA
mW
˚C
˚C
˚C



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s Electrical Characteristics (Ta=25˚C)
Parameter
Symbol
Operation start voltage
Operation stop voltage
Voltage difference between operation start and stop
Pre-start circuit current (1)
Circuit current (1)
Circuit current (2)
OFF-time circuit current (1)
OFF-time circuit current (2)
Timer off operation circuit current (1)
Timer off operation circuit current (2)
OVP operation circuit current (1)
OVP operation circuit current (2)
ON/OFF terminal H threshold voltage
ON/OFF terminal L threshold voltage
ON/OFF terminal hysteresis voltage
Output 0% duty FB current
Output maximum duty FB current
FB current difference between output 0% and maximum duty
FB terminal voltage
FB terminal discharging current
OVP terminal threshold voltage
OVP terminal input current
OVP release supply voltage
Power supply stop voltage OVP release supply voltage
Timer frequency
Timer charging current (1)
Timer OFF/ON time ratio
CLMterminal threshold voltage (1)
CLMterminal out-current
CLM+ terminal threshold voltage (1)
CLM+ terminal out-current
VCC (start)
VCC (stop)
DVCC
ICCL1
ICC01
ICC02
ICC1 OFF
ICC2 OFF
ICC1 CT
ICC2 CT
ICC1 OVP
ICC2 OVP
VTHH ON/OFF
VTHL ON/OFF
DVTH ON/OFF
IFB MIND
IFB MAXD
DIFB
VFB
IFB Res
VTH OVP
IIN OVP
VCC OVP
DVCC OVP
fTIM
ICH1 TM
GTIM
VTH1 CLM–
IOUT CLM–
VTH1 CLM+
IOUT CLM+
Oscillation frequency (1)
fOSC1
Duty ratio (1)
Oscillation waveform upper limit voltage
Oscillation waveform lower limit voltage
Oscillation waveform voltage difference between upper and lower limit
CLM operation oscillation frequency (1)
GDUTY1
VOSCH
VOSCL
DVOSC
fOSC1 VF
CLM operation oscillation frequency (2)
fOSC2 VF
CLM operation oscillation frequency (3)
Timer operation start VF voltage
fOSC3 VF
VTH TIM
Condition
DVCC=VCC (start) –VCC (stop)
VCC=14.5V
VCC=11V (Start Condition)
VCC=30V
VCC=14V
VCC=25V
VCC=14V
VCC=25V
VCC=9.5V
VCC=25V
VCC=18V
VCC=18V
DIFB=IFB MIND –IFB MAXD
IFB= – 0.95mA
VOVP=5V
DVCC OVP =VCC STOP –VCC OVP
R1=17k, R2=20k,
CF=220pF
R1=17k, R2=20k,
CF=220pF
R1=17k, R2=20k,
CF=220pF, VF=5V
R1=17k, R2=20k,
CF=220pF, VF=2V
R1=17k, R2=20k,
CF=220pF, VF=0.2V
min
15.2
9
5
50
10
10
50
0.95
0.95
215
1.3
2.1
1.9
0.1
–2
– 0.9
–1.35
4.6
1
1.2
– 0.5
6
0.65
0.27
–180
7
–215
–170
185
–270
185
typ
16
10
6
100
15
15
100
1.5
190
1.55
280
2
2.6
2.4
0.2
–1.5
– 0.55
– 0.95
5.6
3
1.4
0
7
1.3
0.44
–125
8.3
–200
–125
200
–200
200
max
17.2
10.9
7
120
21
21
120
1.9
270
2
380
3
3.1
2.9
0.3
–1.1
– 0.4
– 0.7
6.8
1.6
0.5
8
0.6
–80
11
–185
–90
215
–140
215
Unit
V
V
V
µA
mA
mA
µA
mA
µA
mA
µA
mA
V
V
V
mA
mA
V
V
mA
V
µA
V
V
Hz
µA
mV
µA
mV
µA
kHz
47 49 51
%
4 4.4 4.8
1.8 2 2.2
2.2 2.4 2.6
V
V
V
185 200 215 kHz
110 124 141 kHz
20 25 32 kHz
2.7
3 3.3
V



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s Electrical Characteristics (cont.) (Ta=25˚C)
Parameter
Symbol
Condition
Pre-circuit current (2) Note 1)
Timer charging current (2) Note 1)
Timer charging current (3) Note 1)
CLMterminal threshold voltage (2) Note 1)
CLMterminal delay time Note 1)
CLM+ terminal threshold voltage (2) Note 1)
CLM+ terminal delay time Note 1)
Oscillation frequency (2) Note 1)
Oscillation frequency (3) Note 1)
Duty ratio (2) Note 1)
Duty ratio (3) Note 1)
FB terminal voltage Note 1)
TON terminal voltage Note 1)
TOFF terminal voltage Note 1)
Output voltage rise time Note 1)
Output voltage fall time Note 1)
ICCL2
ICH2 TIM
ICH3 TIM
VTH2 CLM–
TPD CLM–
VTH2 CLM+
TPD CLM+
fOSC2
fOSC3
GDUTY2
GDUTY3
RFB
VTON
VTOFF
Grise
Gfall
VCC=14.5V, –30˚C <= Ta <= 85˚C
VCT=3.3V, Ta= –5˚C
VCT=3.3V, Ta=85˚C
–30˚C <= Ta<= 85˚C
–30˚C <= Ta<= 85˚C
R1=17k, R2=20k,
CF=220pF, –30˚C<= Ta<= 85˚C
R1=17k, R2=20k,
CF=68pF, –30˚C <=Ta <=85˚C
R1=17k, R2=20k,
CF=220pF, –30˚C<= Ta<= 85˚C
R1=17k, R2=20k,
CF=68pF, –30˚C<= Ta<= 85˚C
R1=17k
R2=20k
Under no load
Under no load
Note 1) These are design reference values, not guaranteed values.
min
40
95
75
–215
185
185
462
46
44
typ
100
130
100
–200
190
200
190
200
max
160
185
145
–185
215
215
Unit
µA
µA
µA
mV
ns
mV
ns
kHz
500 538 kHz
49 52
%
49 54
500
4.4
3.6
50
40
%
V
V
ns
ns
s Precautions on Use (Ta=25˚C)
Parameter
Peak output current
VF terminal allowable applied voltage
ON/OFF terminal allowable applied voltage
CLMterminal allowable applied voltage
CLM+ terminal allowable applied voltage
OVP terminal allowable applied voltage
FB terminal allowable applied voltage
Symbol
IOpeak
VF
VON/OFF
VCLM–
VCLM+
VOVP
VFB
Rating
±2
VCC
VCC
±4
– 0.3, 4
VCC
0, 10
Unit
A
V
V
V
V
V
V



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