Philips Semiconductors
Product specification
Switched-mode power supply control circuit
NE/SE5562
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.
PIN CONFIGURATION
D, F, N Packages
FEED FORWARD 1
C
T
2
R
T
3
EXTERNAL MOD IN 4
DUTY CYCLE CONTROL 5
REMOTE ON/OFF 6
V
I
7
FEEDBACK VOLTAGE 8
V
Z
9
ERROR AMP OUT 10
TOP VIEW
20 GROUND
19 OUTPUT
18 DEMAG OVERVOLT IN
17 V
S
16 C DELAY
15 OUT INVERT CONTROL
14 CURRENT SENSE
13 AUX COMP HYSTERESIS
12 AUX COMP INPUT
11 EXTERNAL SYNC IN
SL00388
Figure 1. Pin Configuration
FEATURES
•
Stabilized power supply
•
Temperature-compensated reference source
•
Sawtooth generator
•
Pulse width modulator
•
Remote on/off switching
•
Current limiting (2 levels)
ORDERING INFORMATION
DESCRIPTION
20-Pin Plastic Small Outline (SO) Package
20-Pin Plastic Dual In-Line Package (DIP)
20-Pin Ceramic Dual In-Line Package (CERDIP)
•
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
TEMPERATURE RANGE
0 to +70°C
0 to +70°C
-55°C to +125°C
ORDER CODE
NE5562D
NE5562N
SE5562F
DWG #
1021B
SOT146-1
SOT146-1
1994 Aug 31
1
853-0811 13721
Philips Semiconductors
Product specification
Switched-mode power supply control circuit
NE/SE5562
ABSOLUTE MAXIMUM RATINGS
SYMBOL
Supply
V
S
I
CC
voltage-fed mode (Pin 17)
current-fed mode (Pin 7)
Output transistor
output current
Sync (Pin 11)
Duty cycle control (Pin 5)
Remote on/off (Pin 6)
Output invert control (Pin 15)
Feedback pin (Pin 8)
C
DELAY
(Pin 16)
External mod in (Pin 4)
FF
Feed-forward (Pin 1)
Demag/overvoltage in (Pin 18)
Current sense (Pin 14)
80Low supply sense and hysteresis
(Pins 12, 13)
T
J
T
STG
T
SOLD
Operating junction temperature
Storage temperature range
Lead soldering temperature (10sec)
V
S
V
Z
V
S
V
S
V
Z
V
Z
V
S
V
S
V
Z
V
S
V
S
135
-65 to +150
300
V
V
V
V
V
V
V
V
V
V
V
°C
°C
°C
16
30
100
V
mA
mA
PARAMETER
RATING
UNIT
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
Supply
voltage-fed
current-fed
T
A
Ambient temperature range
NE grade
SE grade
T
J
Junction temperature range
NE grade
SE grade
0 to +85
-55 to +135
°C
°C
0 to +70
-55 to +125
°C
°C
10 to 16
15
V
mA
PARAMETER
RATING
UNIT
DC AND AC ELECTRICAL CHARACTERISTICS
V
CC
= 12V, specifications apply over temperature, unless otherwise specified.
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
SE5562
Min
3.76
3.72
Typ
3.80
3.8
30
0.5
Max
3.84
3.90
Min
3.76
3.725
NE5562
Typ
3.80
3.8
30
0.5
Max
3.84
3.870
UNIT
Internal reference
V
REF
V
REF
Reference voltage
Reference voltage
Temperature stability
Long-term stability
Internal
Internal
Internal
Internal
T
A
=25°C
Over temp.
V
V
ppm/°C
µV/1000
hrs
1994 Aug 31
3
Philips Semiconductors
Product specification
Switched-mode power supply control circuit
NE/SE5562
DC AND AC ELECTRICAL CHARACTERISTICS
(Continued)
V
CC
= 12V, specifications apply over temperature, unless otherwise specified.
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
SE5562
Min
Typ
Max
Min
NE5562
Typ
Max
UNIT
Reference
V
Z
V
Z
∆V
Z
/
∆T
Zener voltage
Zener voltage
Temperature stability
Comparator threshold
voltage
Comparator threshold
voltage
Hysteresis
9
9
9
I
L
=7mA,
T
A
=25°C
I
L
=7mA,
Over temp.
I
L
<1mA
7.35
7.25
50
7.60
7.75
7.80
7.35
7.20
50
7.6
7.75
7.78
V
V
ppm/°C
Low supply shutdown
Internal
Internal
Internal
1, 2,
3, 11
1, 2,
3, 11
1, 2,
3, 11
1, 2, 3,
11, 17
1, 2,
3, 11
2, 3
2, 3
Sawtooth valley voltage
Sync. in high level
Sync. in low level
Sync. in bias current
Feed-forward ratio,
maximum
Feed-forward duty cycle
reduction
Feed-forward reference
voltage
Feed-forward bias current
2, 3
2, 3
11
11
11
1
1
1
9
1
V
FF
=2V
Z
,
T
A
=25°C
Over temp.
11
6
(Sourced),
V
11
<0.8V
T
A
=25°C
1
Over temp.
T
A
=25°C
Over temp.
5.00
4.80
1.25
1.0
2.0
0.0
0.50
2
13.5
13.5
V
Z
2.5
19
22
V
S
50.0
11
8
V
Z
2.5
R
T
=42.7kΩ,
C
T
=0.47µF
R
T
=2.87kΩ,
C
T
=380pF
f
O
=52kHz,
R
T
=16kΩ
and C
T
=0.0015µF,
T
A
=25°C
10V<V
S
<18V
600
T
A
=25°C
Over temp.
8.30
8.00
25
8.45
8.45
50
8.75
8.90
8.00
8.30
8.00
25
8.45
8.45
50
8.75
8.90
800
V
V
mV
Oscillator
f
MIN
f
MAX
Frequency range,
minimum
Frequency range,
maximum
60
80
600
60
80
Hz
kHz
Initial accuracy
48.6
54
59.4
48.6
54
59.4
kHz
Voltage stability
Temperature stability
Sawtooth peak voltage
-215
300
5.25
5.25
1.70
1.7
500
5.40
5.60
2.00
2.1
V
Z
0.8
10.0
5.00
4.80
1.25
1.25
2.0
0.0
-215
300
5.25
5.25
1.70
1.7
500
5.40
5.60
2.00
2.0
V
Z
0.8
0.50
2
13.5
19
22
V
S
50.0
10.0
ppm/V
ppm/°C
V
V
V
V
V
V
µA
%
%
V
µA
1994 Aug 31
4
Philips Semiconductors
Product specification
Switched-mode power supply control circuit
NE/SE5562
DC AND AC ELECTRICAL CHARACTERISTICS
(Continued)
V
CC
= 12V, specifications apply over temperature, unless otherwise specified.
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
SE5562
Min
Typ
1.0
R
L
>100kΩ
I
SOURCE
=1mA
I
SINK
=1mA
f
O
<300kHz
-40
8
1
V8=V10=5V
V8=3V,
V10=1V
A
V
=100,
0% duty cycle
@V
COMP
<,
f=300kHz
@V
COMP
>,
f=300kHz,
V15=0V
f=15kHz to
200kHz,
V
IN
=0.472 V
Z
V
15
=0
(Sourced)
(Sourced)
.910
0
2
1
V
Z
400
.593
.486
(Sourced)
-18.2
-770
V12=V
Z
T
A
=25°C
0.4
3.75
0.645
0.528
0.5
-13
-550
1.4
3.86
.697
.570
50
-6.5
-250
4.0
3.97
-18.2
-770
0.8
3.75
0.593
0.486
200
240
10
5
200
1
60
5
2.0
-40
8
240
10
5
86
Max
5.0
60
5
2.0
Min
NE5562
Typ
1.0
86
Max
5.0
UNIT
Error amp
I
BIAS
A
VOL
V
OH
V
OL
Input bias current
DC open-loop gain
High output voltage
Low output voltage
PSRR from V
Z
and V
S
BW
Small-signal gain bandwidth
product
Feedback resistor range
I
SINK
I
SOURCE
Output sink current
Output source current
Sawtooth feedthrough
8
8, 10
10
10
Internal
µA
dB
V
V
dB
MHz
kΩ
mA
mA
mV
PWM comparator and modulator
Minimum duty cycle
19
0
0
%
Maximum duty cycle
19
95
98
95
98
%
A
CC
t
PD
I
BIAS
I
BIAS
Duty cycle
Propagation delay to
output
Bias current, external
modulator input
Bias current, duty cycle
control
Soft-start trip voltage
10, 19
41
49
55
41
49
55
%
2, 19
4
5
5
6
6
6
6
6, 19
14
14
14
16
16
16
16
400
0.20
0.20
0.955
20
20
0.990
0.80
V
Z
10
V
Z
0.922
0
2
400
0.20
0.20
0.955
20
20
0.988
0.80
V
Z
1
400
0.645
0.528
0.5
-13
-550
1.4
3.86
0.697
0.570
50
-7.8
-330
2.0
3.97
10
ns
µA
µA
V
V
V
µA
V
ns
V
V
µA
µA
µA
µA
V
Remote on/off
(shutdown)
Output enabled
Output disabled
I
BIAS
V
IN
Bias current
Maximum input voltage
Delay to output(s)
Current limit comparator(s)
Shutdown, OC2
Minimum duty cycle, OC1
I
BIAS
OC
1
OC2
C
DELAY
C
DELAY
Bias current
C
DELAY
charge current
C
DELAY
charge current
Discharge current
Shut off trip level
1994 Aug 31
5
51单片机
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