IP1543

IP1543 SEME-LAB | Alldatasheet

Document overview

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Technical content

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 +V IN Input Supply Voltage Sense Inputs SCR Trigger Current Indicator Output Voltage Indicator Output Sink Current P D Power Dissipation T A = 25°C Derate @ TA > 50°C PD Power Dissipation T C = 25°C Derate @ TC > 25°C TJ Operating Junction Temperature TSTG Storage Temperature Range TL Lead Temperature (soldering, 10 seconds) 40V VIN Internally Limited +40V 50mA 10mW/°C 16mW/°C See Ordering Information –65 to +150°C +300°C ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated) TOP VIEW J Package – 16 Pin Ceramic DIP N Package – 16 Pin Plastic DIP D Package – 16 Pin Plastic (300) SOIC SCR TRIGGER REMOTE ACTIVATE RESET O.V. INDICATE O.V. DELAY O.V. INPUT U.V. INPUT U.V. DELAY U.V. INDICATE C.L. INV. INPUT C.L. NON–INV. INPUT OFFSET/COMP C.L. OUTPUT GND V V IN REF 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 Order Information Note: To order, add the package identifier to the part number. eg. IP1543J IP3543D–16

U.V. INDICATE U.V. VIN U.V. DELAY 250 µA U.V. SENSE VREF O.V. DELAY 250 µA O.V. V IN 2.5 V REF. GND O.V. SENSE SCR TRIGGER O.V. INDICATE REMOTE ACTIVATE RESET C.L. OUTPUT C.L. C.L. INV. VIN OFFSET / COMP C.L. NON–INV. +4.5 to +40V 0 to VIN – 3 0 to 10mA 0 to 10mA –55 to +125°C 0 to +70°C RECOMMENDED OPERATING CONDITIONS VIN Input Supply Voltage Input Voltage Range Reference Load Current Indicate Output Current Operating Ambient Temperature Range IP1543 IP3543

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

4.5 40 71 0 2.45 2.5 2.55 2.4 2.6 11 0 12 25 40 100 200 400 12 13 0 0.1 –0.1 –0.8 1.5 6 –0.1 –0.8 1.5 6 400 300 500 2.4 2.5 2.6 2.35 2.65 –0.3 –1 0.2 0.5 200 250 300 4.5 40 71 0 2.48 2.5 2.52 2.45 2.55 11 0 12 25 40 100 200 400 12 13 0 0.1 –0.1 –0.8 1.5 6 –0.1 –0.8 1.5 6 400 300 500 2.45 2.5 2.55 2.4 2.6 –0.3 –1 0.2 0.5 200 250 300 Input Voltage Range Supply Current Output Voltage Line Regulation Load Regulation Short Circuit Current Temperature Stability Peak Output Current Peak Output Voltage Output Off Voltage Remote Activate Current Remote Activate Voltage Reset Current Reset Voltage Output Current Rise Time Prop. Delay from Pin 2 Prop. Delay from Pin 6 Input Threshold (Input Voltage Rising on Pin 6, Falling on Pin 7) Input Hysteresis Input Bias Current Delay Saturation Delay High Level Delay Charging Current V IN = 40V TJ = 25°C VIN = 4.5 to 30V IREF = 0 to 10mA VREF = 0 VIN = 5V R G = 0 VO = 0 VIN = 15V I O = 100mA VIN = 40V Pin 2 = Gnd Pin 2 = Open Pin 3 = Gnd Pin 2 = Gnd Pin 3 = Open Pin 2 = Gnd R L = 50Ω TJ = 25°C C D = 0 VPIN2 = 0.4V T J = 25°C VPIN6 = 2.7V T J = 25°C TJ = 25°C TJ = 25°C Sense Input = 0V VD = 0 LAB SEME IP1543 SERIES IP1543 IP3543 ELECTRICAL CHARACTERISTICS (TJ = Over Operating Temperature Range unless otherwise stated) V mA V mV mA ppm/°C mA V mA V mA V mA/µs ns ns V mV µA V µA REFERENCE SECTION SCR TRIGGER SECTION COMPARATOR SECTIONS

IL = –10mA VIND = 40V VPIN6 = 2.7V V PIN7 = 2.3V C D = 0 T J = 25°C VPIN6 = 2.7V V PIN7 = 2.3V C D = 0 T J = 25°C Pin 12 = Open V CM = 0 Pin 12 = Open V CM = 0 10kΩ from Pin 12 to Gnd VCM = 0 to 12V V IN = 15V Pin 12 = Open V CM = 0 IL = –10mA VIND = 40V AV = 0dB T J = 25°C Voverdrive= 100mV T J = 25°C Indicate Saturation Indicate Leakage Propagation Display Input Voltage Range Input Bias Current Input Offset Voltage CMRR AVOL Output Saturation Output Leakage Small Signal Bandwidth Propagation Delay IP1543 IP3543 0.2 0.5 0.01 1 400 0V IN – 3 –0.3 –1 01 5 70 100 130 60 70 72 80 0.2 0.5 0.01 1 200 0.2 0.5 0.01 1 400 IN – 3 –0.3 –1 01 0 70 100 130 60 70 72 80 0.2 0.5 0.01 1 200 V µA ns ms V µA mV dB V µA MHz ns LAB SEME IP1543 SERIES NOTES 1. Test Conditions unless otherwise stated: VIN = 10V TJ = –55 to +125°C for IP1543 TJ = 0 to +70°C for IP3543 ELECTRICAL CHARACTERISTICS (TJ = Over Operating Temperature Range unless otherwise stated) COMPARATOR SECTIONS (cont.) CURRENT LIMIT SECTION

2.5V REF. MAIN POSITIVE SUPPLY 16 U.V. O.V. 94 2 3 339 QUAD COMP. ADDITIONAL POSITIVE SUPPLY NEGATIVE SUPPLY VOLTAGE TO SHUTDOWN CIRCUIT R 1 R 2 R 4 R 5 R 6 MASTER POWER SUPPLY CONDITION INDICATOR IP1543 BIAS SUPPLY TO 339 COMPARATORS R 3 R 7 APPLICATIONS INFORMATION POWER SUPPLY 2.5V REF. R SC C.L. TO VOLTAGE CONTROL LOOP 7 5 8 OUT OF TOLERANCE INDICATORS R 1 C S R 3 R 6 R 2 R 4 R 5 U.V. O.V. C D1 C D2 SCR TRIGGER LATCH RESET

1 R G

“CROWBAR” Typical Application Sensing Multiple Supply Voltages Current Limit VTH ≈ 1000 R 1 C S is determined by the current loop dynamics. Peak Current to load IP ≅ + VTH R SC 2.5 (R4 + R5 + R6) R 5 + R6 VO R SC R 2 R 2 + R3 Low Output Voltage Limit VO(low) = High Output Voltage Limit VO(high) = Voltage Sensing Delay TD = 10000 CD SCR trigger power limiting resistor RG > 2.5 (R4 + R5 + R6) R 6 VIN -5 0.2

2.5V REF. U.V. LINE INPUT Overcurrent Shutdown Input Line Monitor IP1543 D 1015 11 13 2 3 12 SC G SCR "CROWBAR" C MAIN SUPPLY BUS BIAS VOLTAGE SUPPLY BUS RETURN 2.5V REF. R R R SCR TRIGGERC.L. R

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