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PDF SE5562 Data sheet ( Hoja de datos )

Número de pieza SE5562
Descripción Switched-mode power supply control circuit
Fabricantes Philips 
Logotipo Philips Logotipo



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Philips Semiconductors
Switched-mode power supply control circuit
Product specification
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.
FEATURES
Stabilized power supply
Temperature-compensated reference source
Sawtooth generator
Pulse width modulator
Remote on/off switching
Current limiting (2 levels)
PIN CONFIGURATION
D, F, N Packages
FEED FORWARD 1
CT 2
RT 3
EXTERNAL MOD IN 4
DUTY CYCLE CONTROL 5
REMOTE ON/OFF 6
VI 7
FEEDBACK VOLTAGE 8
VZ 9
ERROR AMP OUT 10
20 GROUND
19 OUTPUT
18 DEMAG OVERVOLT IN
17 VS
16 C DELAY
15 OUT INVERT CONTROL
14 CURRENT SENSE
13 AUX COMP HYSTERESIS
12 AUX COMP INPUT
11 EXTERNAL SYNC IN
TOP VIEW
Figure 1. Pin Configuration
SL00388
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
20-Pin Plastic Small Outline (SO) Package
20-Pin Plastic Dual In-Line Package (DIP)
20-Pin Ceramic Dual In-Line Package (CERDIP)
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

1 page




SE5562 pdf
Philips Semiconductors
Switched-mode power supply control circuit
Product specification
NE/SE5562
DC AND AC ELECTRICAL CHARACTERISTICS (Continued)
VCC = 12V, specifications apply over temperature, unless otherwise specified.
SYMBOL
PARAMETER
TEST
PINS
TEST CONDITIONS
Error amp
IBIAS
AVOL
VOH
VOL
BW
Input bias current
DC open-loop gain
High output voltage
Low output voltage
PSRR from VZ and VS
Small-signal gain bandwidth
product
8
8, 10
10
10
Internal
RL>100k
ISOURCE=1mA
ISINK=1mA
fO<300kHz
ISINK
ISOURCE
Feedback resistor range
Output sink current
Output source current
V8=V10=5V
V8=3V,
V10=1V
Sawtooth feedthrough
AV=100,
0% duty cycle
PWM comparator and modulator
Minimum duty cycle
19
@VCOMP<,
f=300kHz
Maximum duty cycle
ACC Duty cycle
tPD
Propagation delay to
output
19
10, 19
2, 19
@VCOMP>,
f=300kHz,
V15=0V
f=15kHz to
200kHz,
VIN=0.472 VZ
V15=0
IBIAS
Bias current, external
modulator input
4 (Sourced)
IBIAS
Bias current, duty cycle
control
5 (Sourced)
Soft-start trip voltage
Remote on/off (shutdown)
5
Output enabled
6
IBIAS
VIN
Output disabled
Bias current
Maximum input voltage
Delay to output(s)
6
6
6
6, 19
Current limit comparator(s)
Shutdown, OC2
Minimum duty cycle, OC1
14
14
IBIAS
OC1
OC2
CDELAY
CDELAY
Bias current
CDELAY charge current
CDELAY charge current
Discharge current
Shut off trip level
14 (Sourced)
16
16
16 V12=VZ
16 TA=25°C
SE5562
Min Typ Max
1.0 5.0
60 86
5
2.0
-40
8
1 240
10
5
200
0
95 98
41 49 55
400
0.20 20
0.20 20
.910 0.955 0.990
0 0.80
2 VZ
1 10
VZ
400
.593
.486
-18.2
-770
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
NE5562
Min Typ Max
1.0 5.0
60 86
5
2.0
-40
8
1 240
10
5
200
0
95 98
41 49 55
400
0.20 20
0.20 20
0.922 0.955 0.988
0 0.80
2 VZ
1 10
VZ
400
0.593
0.486
-18.2
-770
0.8
3.75
0.645
0.528
0.5
-13
-550
1.4
3.86
0.697
0.570
50
-7.8
-330
2.0
3.97
UNIT
µA
dB
V
V
dB
MHz
k
mA
mA
mV
%
%
%
ns
µA
µA
V
V
V
µA
V
ns
V
V
µA
µA
µA
µA
V
1994 Aug 31
5

5 Page





SE5562 arduino
Philips Semiconductors
Switched-mode power supply control circuit
Product specification
NE/SE5562
SAWTOOTH
+
35µA
35µA
+VZ
35µA
VH
(–)
SAWTOOTH
UPPER
THRESHOLD
10
(–)
ERROR
AMP
OUT
4
(–)
MODULATOR
IN
DELTA
5 MAX
(–) CONTROL
9k 2.5k
PWM SIGNAL
TO OUTPUT
NOR GATE
VREF
+3.80V
+
8–
100µA
Figure 15. PWM Comparator
DELAYED CLOCK
+
– PWM
S
NOR
R OUTPUT
LATCH
δ
TO OUTPUT
STAGE
SL00402
10 5
DUTY
CYCLE
CONTROL
SL00403
Figure 16. The Duty Cycle Control Circuit, Pulse Width Modulator, and Error Amplifier, Reference, and Output Latch
1994 Aug 31
11

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