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