Seme LAB IP1543 Power supply supervisory circuit Datasheet

IP1543 SERIES
SEME
LAB
TOP VIEW
SCR TRIGGER
1
16
V IN
REMOTE
ACTIVATE
2
15
VR E F
RESET
3
14
GND
O.V. INDICATE
4
13
C.L. OUTPUT
O.V. DELAY
5
12
OFFSET/COMP
O.V. INPUT
6
11
C.L. NON–INV. INPUT
U.V. INPUT
7
10
C.L. INV. INPUT
U.V. DELAY
8
9
U.V. INDICATE
POWER SUPPLY
SUPERVISORY CIRCUIT
J Package – 16 Pin Ceramic DIP
N Package – 16 Pin Plastic DIP
D Package – 16 Pin Plastic (300) SOIC
FEATURES
• 4.5 to 40V operation over full temperature
range
• Reference voltage trimmed to 1% accuracy
• Includes over–voltage, under–voltage and
current sensing
• Programmable time delays
• SCR “Crowbar” drive of 300mA
• Remote activation capability
• Optional over–voltage latch capability
Order Information
Part
J–Pack
N–Pack
D–16
Temp.
Number
16 Pin
16 Pin
16 Pin
Range
IP1543
✔
-55 to +125°C
IP3543
✔
✔
✔
0 to +70°C
Note:
To order, add the package identifier to the part number.
eg.
IP1543J
IP3543D–16
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
+VIN
Input Supply Voltage
40V
Sense Inputs
VIN
SCR Trigger Current
Internally Limited
Indicator Output Voltage
+40V
Indicator Output Sink Current
50mA
PD
Power Dissipation
TA = 25°C
Derate @ TA > 50°C
1W
10mW/°C
PD
Power Dissipation
TC = 25°C
Derate @ TC > 25°C
2W
16mW/°C
TJ
Operating Junction Temperature
TSTG
Storage Temperature Range
TL
Lead Temperature
Semelab plc.
See Ordering Information
–65 to +150°C
(soldering, 10 seconds)
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
+300°C
Prelim. 1/96
IP1543 SERIES
SEME
LAB
DESCRIPTION
The IP1543 and IP3543 power supply supervisory circuits contain all the functions necessary to monitor and control the
output of a sophisticated power supply system. Included on the chip are over-voltage (O.V.) sensing with externally
programmable delay used to trigger an external SCR “Crowbar”, under-voltage (U.V.) sensing with externally
programmable delay used to sense either the power supply output or the line input voltage, a third op-amp/comparator
with provision for external compensation and/or offset programming used for either current limiting or as an additional
voltage monitor, and a voltage reference trimmed to ±1%.
BLOCK DIAGRAM
VIN
250 µA
9
U.V. SENSE
7
U.V. INDICATE
U.V.
8
U.V. DELAY
VREF
V IN
15
16
2.5 V REF.
GND
O.V. SENSE
250 µA
14
O.V.
6
1
5
VIN
SCR TRIGGER
O.V. DELAY
C.L. INV.
C.L. NON–INV.
13
10
4
C.L. OUTPUT
O.V. INDICATE
C.L.
11
12
OFFSET / COMP
2
REMOTE
ACTIVATE
3
RESET
RECOMMENDED OPERATING CONDITIONS
VIN
Input Supply Voltage
+4.5 to +40V
Input Voltage Range
0 to VIN – 3
Reference Load Current
0 to 10mA
Indicate Output Current
0 to 10mA
Operating Ambient Temperature Range
Semelab plc.
IP1543
IP3543
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
–55 to +125°C
0 to +70°C
Prelim. 1/96
IP1543 SERIES
SEME
LAB
ELECTRICAL CHARACTERISTICS (TJ = Over Operating Temperature Range unless otherwise stated)
Parameter
Input Voltage Range
Test Conditions
Supply Current
VIN = 40V
Min.
4.5
IP1543
Typ. Max.
40
Min.
4.5
7
10
2.5
2.52
2.45
2.55
2.4
IP3543
Typ. Max.
40
7
10
2.5
2.55
Units
V
mA
REFERENCE SECTION
TJ = 25°C
Output Voltage
2.48
2.45
2.6
Line Regulation
VIN = 4.5 to 30V
1
5
1
5
Load Regulation
IREF = 0 to 10mA
1
10
1
10
Short Circuit Current
VREF = 0
25
40
25
40
12
12
mV
mA
ppm/°C
50
50
Temperature Stability
V
SCR TRIGGER SECTION
Peak Output Current
VIN = 5V
RG = 0
VO = 0
Peak Output Voltage
VIN = 15V
Output Off Voltage
VIN = 40V
Remote Activate Current
IO = 100mA
100
200
12
13
400
100
200
12
13
400
mA
V
0
0.1
0
0.1
Pin 2 = Gnd
–0.1
–0.8
–0.1
–0.8
mA
Remote Activate Voltage
Pin 2 = Open
1.5
6
1.5
6
V
Reset Current
Pin 3 = Gnd
Pin 2 = Gnd
–0.1
–0.8
–0.1
–0.8
mA
Reset Voltage
Pin 3 = Open
Pin 2 = Gnd
1.5
6
1.5
6
V
Output Current Rise Time
RL = 50Ω
TJ = 25°C
400
400
mA/µs
300
300
ns
500
500
ns
Prop. Delay from Pin 2
Prop. Delay from Pin 6
CD = 0
VPIN2 = 0.4V
TJ = 25°C
VPIN6 = 2.7V
TJ = 25°C
COMPARATOR SECTIONS
Input Threshold (Input Voltage TJ = 25°C
2.45
2.5
2.4
Rising on Pin 6, Falling on Pin 7)
Input Hysteresis
TJ = 25°C
Input Bias Current
Sense Input = 0V
2.55
2.4
2.6
2.35
2.5
2.6
2.65
mV
25
25
µA
–0.3
–1
–0.3
–1
Delay Saturation
0.2
0.5
0.2
0.5
Delay High Level
6
8
6
8
250
300
250
300
Delay Charging Current
Semelab plc.
VD = 0
200
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
200
V
V
µA
Prelim. 1/96
IP1543 SERIES
SEME
LAB
ELECTRICAL CHARACTERISTICS (TJ = Over Operating Temperature Range unless otherwise stated)
Parameter
Test Conditions
Min.
IP1543
Typ. Max.
Min.
IP3543
Typ. Max.
Units
COMPARATOR SECTIONS (cont.)
Indicate Saturation
IL = –10mA
0.2
0.5
0.2
0.5
V
Indicate Leakage
VIND = 40V
0.01
1
0.01
1
µA
Propagation Display
VPIN6 = 2.7V
VPIN7 = 2.3V
CD = 0
TJ = 25°C
VPIN6 = 2.7V
VPIN7 = 2.3V
CD = 0
TJ = 25°C
400
400
ns
10
10
ms
CURRENT LIMIT SECTION
Input Voltage Range
Input Bias Current
Input Offset Voltage
VIN – 3
0
0
VIN – 3
V
µA
Pin 12 = Open
VCM = 0
–0.3
–1
–0.3
–1
Pin 12 = Open
VCM = 0
0
10
0
15
130
70
100
130
mV
10kΩ from Pin 12 to Gnd
70
100
CMRR
VCM = 0 to 12V
VIN = 15V
60
70
60
70
AVOL
Pin 12 = Open
VCM = 0
72
80
72
80
Output Saturation
IL = –10mA
0.2
0.5
0.2
0.5
V
Output Leakage
VIND = 40V
0.01
1
0.01
1
µA
Small Signal Bandwidth
AV = 0dB
TJ = 25°C
5
5
MHz
Propagation Delay
Voverdrive = 100mV
TJ = 25°C
200
200
ns
dB
NOTES
1. Test Conditions unless otherwise stated:
VIN = 10V
for IP1543
TJ = –55 to +125°C
for IP3543
TJ = 0 to +70°C
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 1/96
IP1543 SERIES
SEME
LAB
APPLICATIONS INFORMATION
Typical Application
OUT OF TOLERANCE
INDICATORS
R SC
POWER SUPPLY
Current Limit VTH ≈ 1000
16
TO VOLTAGE
CONTROL LOOP
2.5V
REF.
R4
15
R1
9
TO SYSTEM
CONTROL
4
U.V.
7
14
13
C.L.
R5
11
6
SCR
TRIGGER
2
5
CS
R2
R2 + R3
R5 + R6
High Output Voltage Limit VO(high) = 2.5 (R4 + R5 + R6)
R6
3
Voltage Sensing Delay TD = 10000 CD
RESET
C D1
RSC
Low Output Voltage Limit VO(low) = 2.5 (R4 + R5 + R6)
LATCH
8
R6
R3
RSC
O.V.
12
R1
Peak Current to load IP ≅ VTH + VO
SCR
“CROWBAR”
RG
1
R2
10
CS is determined by the current loop dynamics.
SCR trigger power limiting resistor RG > VIN -5
C D2
0.2
Sensing Multiple Supply Voltages
BIAS SUPPLY
TO 339 COMPARATORS
MAIN POSITIVE
SUPPLY
16
IP1543
R1
7
U.V.
2.5V
REF.
R2
6
SCR
TRIGGER
1
TO SHUTDOWN
CIRCUIT
O.V.
R3
GROUND
14
15
4
9
339 QUAD COMP.
ADDITIONAL
POSITIVE
SUPPLY
R4
2
3
MASTER POWER SUPPLY
CONDITION INDICATOR
R5
NEGATIVE
SUPPLY
VOLTAGE
Semelab plc.
R6
R7
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 1/96
IP1543 SERIES
SEME
LAB
Input Line Monitor
IP1543
15
7
2.5V REF.
9
U.V.
R2
LINE
INPUT
8
14
Overcurrent Shutdown
MAIN
SUPPLY BUS
BIAS
VOLTAGE
16
IP1543
SCR
"CROWBAR"
2.5V
REF.
SCR
TRIGGER
C.L.
1
RG
14
15
11
10
12
13
2
3
CD
R1
R2
SUPPLY
BUS RETURN
Semelab plc.
R SC
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 1/96
IP1543 SERIES
SEME
LAB
TYPICAL PERFORMANCE CHARACTERISTICS
Comparator Input Hysteresis
Comparator Input Hysteresis
SCR Trigger Power Limiting
Current Limit Amplifier Gain
Current Limit Amplifier Frequency
Response
Activation Delay vs
Capacitor Value
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 1/96
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