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Электронный компонент: NE5562N

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Philips Semiconductors
Product specification
NE/SE5562
Switched-mode power supply control circuit
1
1994 Aug 31
853-0811 13721
DESCRIPTION
The NE/SE5562 is a single-output control circuit for switched-mode
power supplies. This single monolithic IC contains all control and
protection features needed for full-featured switched-mode power
supplies.
The 100mA source/sink output is designed to drive power FETs
directly. The associated output logic is designed to prevent double
pulsing or cross-conduction current spiking on the output.
All of the control and protect features work cycle-by-cycle up to the
maximum operating frequency of 600kHz.
For ease of interface, all digital inputs are TTL or CMOS compatible.
The NE5562 is supplied in 20-pin glass/ceramic (Cerdip), plastic
DIP, and plastic SO packages. The NE grade part is characterized
and guaranteed over the commercial ambient temperature range of
0
C to +70
C and junction temperature range of 0
C to +85
C. The
SE5562 is supplied in the glass/ceramic (Cerdip) package. The SE
grade part is characterized and guaranteed over the ambient
temperature range of -55 to +125
C and junction temperature range
of -55 to +135
C.
FEATURES
Stabilized power supply
Temperature-compensated reference source
Sawtooth generator
Pulse width modulator
Remote on/off switching
Current limiting (2 levels)
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
D, F, N Packages
TOP VIEW
FEED FORWARD
EXTERNAL MOD IN
DUTY CYCLE CONTROL
REMOTE ON/OFF
FEEDBACK VOLTAGE
ERROR AMP OUT
CT
RT
VI
VZ
GROUND
OUTPUT
DEMAG OVERVOLT IN
C DELAY
AUX COMP INPUT
CURRENT SENSE
OUT INVERT CONTROL
AUX COMP HYSTERESIS
VS
EXTERNAL SYNC IN
SL00388
Figure 1. Pin Configuration
Auxiliary comparator, with adjustable hysteresis
Loop fault protection
Demagnetization/overvoltage protection
Duty cycle adjust and clamp
Feed-forward control
External synchronization
Total shutdown after adjustable number of overcurrent faults
Soft-start
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
20-Pin Plastic Small Outline (SO) Package
0 to +70
C
NE5562D
1021B
20-Pin Plastic Dual In-Line Package (DIP)
0 to +70
C
NE5562N
SOT146-1
20-Pin Ceramic Dual In-Line Package (CERDIP)
-55
C to +125
C
SE5562F
SOT146-1
Philips Semiconductors
Product specification
NE/SE5562
Switched-mode power supply control circuit
1994 Aug 31
2
BLOCK DIAGRAM
FEEDFORWARD
1
11
EXTERNAL
SYNC IN
+
+

+
S
R
Q
OSC
LATCH
OSCILLATOR
3
2
OFF
ON
CLOCK
TIME
DELAY
OFF
ON
1.5V
REMOTE
ON/OFF
6
ERROR
AMP
OUT 10
FEEDBACK
VOLTAGE
8
EXTERNAL
MOD
IN
4
DUTY CYCLE
CONTROL 5
CLOCK
LOOP FAULT
COMP
0.955V
3.80V
PWM
COMP
ON/OFF
COMP
2k
OC1
0C2
0.955V
SLOW
START
COMP
OC2
NORM
+
0.528V
OVERCURRENT 1
COMP
OVERCURRENT 2
COMP
OC CHARGE PUMPS
NORM
LV STOP
START/
STOP
LATCH
R
S
Q
0.645V
OUTPUT
LATCH
OC1
NORM
LOW BULK
BULK
SENSE
COMP
1:1
1:1
16
POWER
SUPPLY
CKTS
3.80V
SHUT
DOWN
LATCH
3.80V
OC ACCUM
COMP
TRIP
NORM
S
R
Q

+
+V
+V
OC1
OC2
AUXILIARY
COMP
HYSTERESIS
AUXILIARY
COMP
INPUT
12
ERROR
AMP
DEMAG/OV
IN
18
3.80V
DEMAG/OV
COMP
0V
NORM
OUTPUT
19
OUTPUT
INVERT
CONTROL
15
POWR
OUTPUT
NOR
CURRENT
SENSE
GND
14
20
9
0.955V
0.528V
0.645V
DELAYED
CLOCK
S
R

+

+
+
+
+
+
+
13
3.80V
3.80V
+
+
CDELAY
1
A
11
A
80
A
VI
VZ
VS
17
Q
OC1-2
LATCHES
7
SL00389
Figure 2. Block Diagram
Philips Semiconductors
Product specification
NE/SE5562
Switched-mode power supply control circuit
1994 Aug 31
3
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
Supply
V
S
voltage-fed mode (Pin 17)
16
V
I
CC
current-fed mode (Pin 7)
30
mA
Output transistor
100
mA
output current
Sync (Pin 11)
V
S
V
Duty cycle control (Pin 5)
V
Z
V
Remote on/off (Pin 6)
V
S
V
Output invert control (Pin 15)
V
S
V
Feedback pin (Pin 8)
V
Z
V
C
DELAY
(Pin 16)
V
Z
V
External mod in (Pin 4)
V
S
V
FF
Feed-forward (Pin 1)
V
S
V
Demag/overvoltage in (Pin 18)
V
Z
V
Current sense (Pin 14)
V
S
V
80Low supply sense and hysteresis
(Pins 12, 13)
V
S
V
T
J
Operating junction temperature
135
C
T
STG
Storage temperature range
-65 to +150
C
T
SOLD
Lead soldering temperature (10sec)
300
C
NOTES:
1. Ground Pin 20 must always be the most negative pin.
2. For power dissipation, see the application section which follows.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
RATING
UNIT
Supply
voltage-fed
10 to 16
V
current-fed
15
mA
T
A
Ambient temperature range
NE grade
0 to +70
C
SE grade
-55 to +125
C
T
J
Junction temperature range
NE grade
0 to +85
C
SE grade
-55 to +135
C
DC AND AC ELECTRICAL CHARACTERISTICS
V
CC
= 12V, specifications apply over temperature, unless otherwise specified.
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
SE5562
NE5562
UNIT
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
Min
Typ
Max
Min
Typ
Max
UNIT
Internal reference
V
REF
Reference voltage
Internal
T
A
=25
C
3.76
3.80
3.84
3.76
3.80
3.84
V
V
REF
Reference voltage
Internal
Over temp.
3.72
3.8
3.90
3.725
3.8
3.870
V
Temperature stability
Internal
30
30
ppm/
C
Long-term stability
Internal
0.5
0.5
V/1000
hrs
Philips Semiconductors
Product specification
NE/SE5562
Switched-mode power supply control circuit
1994 Aug 31
4
DC AND AC ELECTRICAL CHARACTERISTICS
(Continued)
V
CC
= 12V, specifications apply over temperature, unless otherwise specified.
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
SE5562
NE5562
UNIT
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
Min
Typ
Max
Min
Typ
Max
UNIT
Reference
V
Z
Zener voltage
9
I
L
=7mA,
T
A
=25
C
7.35
7.60
7.75
7.35
7.6
7.75
V
V
Z
Zener voltage
9
I
L
=7mA,
Over temp.
7.25
7.80
7.20
7.78
V
V
Z
/
T
Temperature stability
9
I
L
<1mA
50
50
ppm/
C
Low supply shutdown
Comparator threshold
voltage
Internal
T
A
=25
C
8.30
8.45
8.75
8.30
8.45
8.75
V
Comparator threshold
voltage
Internal
Over temp.
8.00
8.45
8.90
8.00
8.45
8.90
V
Hysteresis
Internal
25
50
8.00
25
50
800
mV
Oscillator
f
MIN
Frequency range,
minimum
1, 2,
3, 11
R
T
=42.7k
,
C
T
=0.47
F
60
80
60
80
Hz
f
MAX
Frequency range,
maximum
1, 2,
3, 11
R
T
=2.87k
,
C
T
=380pF
600
600
kHz
Initial accuracy
1, 2,
3, 11
f
O
=52kHz,
R
T
=16k
and C
T
=0.0015
F,
T
A
=25
C
48.6
54
59.4
48.6
54
59.4
kHz
Voltage stability
1, 2, 3,
11, 17
10V<V
S
<18V
-215
-215
ppm/V
Temperature stability
1, 2,
3, 11
300
500
300
500
ppm/
C
Sawtooth peak voltage
2, 3
T
A
=25
C
1
5.00
5.25
5.40
5.00
5.25
5.40
V
2, 3
Over temp.
4.80
5.25
5.60
4.80
5.25
5.60
V
Sawtooth valley voltage
2, 3
T
A
=25
C
1.25
1.70
2.00
1.25
1.70
2.00
V
2, 3
Over temp.
1.0
1.7
2.1
1.25
1.7
2.0
V
Sync. in high level
11
2.0
V
Z
2.0
V
Z
V
Sync. in low level
11
0.0
0.8
0.0
0.8
V
Sync. in bias current
11
(Sourced),
V
11
<0.8V
0.50
10.0
0.50
10.0
A
Feed-forward ratio,
maximum
1
2
2
Feed-forward duty cycle
reduction
1
V
FF
=2V
Z
,
T
A
=25
C
11
13.5
19
11
13.5
19
%
1
Over temp.
6
13.5
22
8
22
%
Feed-forward reference
voltage
9
V
Z
V
S
V
Z
V
S
V
Feed-forward bias current
1
2.5
50.0
2.5
50.0
A
Philips Semiconductors
Product specification
NE/SE5562
Switched-mode power supply control circuit
1994 Aug 31
5
DC AND AC ELECTRICAL CHARACTERISTICS
(Continued)
V
CC
= 12V, specifications apply over temperature, unless otherwise specified.
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
SE5562
NE5562
UNIT
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
Min
Typ
Max
Min
Typ
Max
UNIT
Error amp
I
BIAS
Input bias current
8
1.0
5.0
1.0
5.0
A
A
VOL
DC open-loop gain
8, 10
R
L
>100k
60
86
60
86
dB
V
OH
High output voltage
10
I
SOURCE
=1mA
5
5
V
V
OL
Low output voltage
10
I
SINK
=1mA
2.0
2.0
V
PSRR from V
Z
and V
S
Internal
f
O
<300kHz
-40
-40
dB
BW
Small-signal gain bandwidth
product
8
8
MHz
Feedback resistor range
1
240
1
240
k
I
SINK
Output sink current
V8=V10=5V
10
10
mA
I
SOURCE
Output source current
V8=3V,
V10=1V
5
5
mA
Sawtooth feedthrough
A
V
=100,
0% duty cycle
200
200
mV
PWM comparator and modulator
Minimum duty cycle
19
@V
COMP
<,
f=300kHz
0
0
%
Maximum duty cycle
19
@V
COMP
>,
f=300kHz,
V15=0V
95
98
95
98
%
A
CC
Duty cycle
10, 19
f=15kHz to
200kHz,
V
IN
=0.472 V
Z
41
49
55
41
49
55
%
t
PD
Propagation delay to
output
2, 19
V
15
=0
400
400
ns
I
BIAS
Bias current, external
modulator input
4
(Sourced)
0.20
20
0.20
20
A
I
BIAS
Bias current, duty cycle
control
5
(Sourced)
0.20
20
0.20
20
A
Soft-start trip voltage
5
.910
0.955
0.990
0.922
0.955
0.988
V
Remote on/off (shutdown)
Output enabled
6
0
0.80
0
0.80
V
Output disabled
6
2
V
Z
2
V
Z
V
I
BIAS
Bias current
6
1
10
1
10
A
V
IN
Maximum input voltage
6
V
Z
V
Z
V
Delay to output(s)
6, 19
400
400
ns
Current limit comparator(s)
Shutdown, OC2
14
.593
0.645
.697
0.593
0.645
0.697
V
Minimum duty cycle, OC1
14
.486
0.528
.570
0.486
0.528
0.570
V
I
BIAS
Bias current
14
(Sourced)
0.5
50
0.5
50
A
OC
1
C
DELAY
charge current
16
-18.2
-13
-6.5
-18.2
-13
-7.8
A
OC2
C
DELAY
charge current
16
-770
-550
-250
-770
-550
-330
A
C
DELAY
Discharge current
16
V12=V
Z
0.4
1.4
4.0
0.8
1.4
2.0
A
C
DELAY
Shut off trip level
16
T
A
=25
C
3.75
3.86
3.97
3.75
3.86
3.97
V