IP1060A IP1060A IP1060B SWITCHED MODE POWER SUPPLY CONTROL CIRCUIT V 1 1 6 F E E D F O R W A R D 2 1 5 O U T P U T (C O L L ) 3 1 4 O U T P U T (E M IT ) G A IN 4 D E M A G N E T IZ A T IO N / 1 3 O V E R V O L T A G E M O D U L A T O R 5 1 2 G N D D U T Y C Y L E C O N T R O L 6 1 1 C U R R E N T 7 1 0 R E M O T E 8 9 E X T E R N A L C C V Z F E E D B A C K R C T T L IM IT IN G O N /O F F S Y N C FEATURES • • • • • • • • • • • • Stabilised Power Supply Temperature Compensated Reference Source Sawtooth Generator Pulse Width Modulator Remote on/off Switching Current Limiting Low Supply Voltage Protection Loop fault Protection Demagnetisation/Overvoltage Protection Maximum Duty Cycle Clamp Feed Forward Control External Synchronisation Order Information Part Number Temperature Range Package IP1060BJ -55°C to + 125°C 16 Pin Ceramic DIP IP1060D -25°C to + 85°C 16 Pin Plastic (150)SOIC IP1060J -25°C to + 85°C 16 Pin Ceramic DIP IP1060N -25°C to + 85°C 16 Pin Plastic DIP IP1060AD 0°C to + 70°C 16 Pin Plastic (150)SOIC IP1060AJ 0°C to + 70°C 16 Pin Ceramic DIP IP1060AN 0°C to + 70°C 16 Pin Plastic DIP DESCRIPTION The IP1060 is a control circuit for use in switched mode power supplies. This single monolithic chip incorporates all the control and supervisory (protection) functions required in switched mode power supplies, including an internal temperature compensated reference source, sawtooth generator, pulse width modulator, output stage and various protection circuits. ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated) Supply Voltage Sourced Current Sourced Output Transistor Output current Collector Voltage (Pin 15) Max. Emitter Voltage (Pin 14) Operating Temperature (Ambient) IP1060B IP1060 IP1060A Storage Temperature Rage Operating Junction Temperature Range Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: [email protected] Website: http://www.semelab.co.uk 18V 30mA 40mA 18V 5V –55°C to +125°C –25°C to + 85°C 0°C to 70°C –65°C to +150°C 150°C Prelim. 7/99 IP1060A IP1060A IP1060B ELECTRICAL CHARACTERISTICS (TJ = 25°C unless otherwise stated) Parameter Test Conditions 1 IP1060 IP1060B Min. Typ. Max. Min. 3.69 3.81 3.57 4.03 3.42 IP1060A Typ. Max. Units REFERENCE SECTION Internal Reference Voltage TJ = Over Temp. Range (VREF) ±100 Temperature Coefficient of VREF Internal Reference 3.72 3.42 2 7.9 (VZ) IL = 0.7mA 8.4 3.95 4.03 ±100 9.0 7.8 ±200 Temperature Coefficient of VZ 3.72 8.4 V ppm/°C 9.0 ±200 V ppm/°C OSCILLATOR SECTION TJ = Over Temp. Range Frequency Range Initial Accuracy Oscillator R = 5kW Duty Cycle Range fO = 20kHz 50 2 100k 50 5 0–90 0–98 0–90 100k Hz 5 % 0–98 % MODULATOR VPin5 = 2V Modulator Input Current TJ = Over Temp. Range -0.2 -5.0 -0.2 -5.0 mA -0.2 -6.0 -0.2 -6.0 mA 40 50 60 40 50 60 8.85 9.0 10.8 8.85 9.0 10.8 V 460 600 720 460 600 720 mV -7 -15 -35 -7 -15 -35 mA 470 600 720 470 600 720 mV -0.6 -7.0 -0.6 -7.0 mA 2 SUPERVISORY FUNCTIONS Pin 6, Input Current At 2V O TJ = Over Temp. Range Pin 6, Duty Cycle Limit Control 2 For 50% Max. Duty Cycle 15kHz to 50kHz VPin6 = 0.4VZ Pin 1, Low Supply Voltage Protection Thresholds Pin 3, Feedback Loop Protection Trip Thresholds Pin 3, Pull Up Current At 2V TJ = Over Temp. Range 2 Pin 13, Demag. / O.V. Protection Threshold Pin 13 Input Current Pin 16, Feed Forward Duty Cycle Control TJ = Over Temp. Range -20 2 -20 Cycle % Orig. 30 VPin16 = 2VZ 40 50 30 40 50 Duty Cycle Pin 16, Feed Forward Input Current At 0.25V % Duty 0.2 At 16V, VCC = 18V 50 0.2 50 mA NOTES 1. Test Conditions unless otherwise stated: VCC = 12V, TJ = 25°C. 2. Applies Over Full Temperature Range: IP1060B TA = –55 to +125°C IP1060 TA = –25 to +85°C IP1060A TA = 0 to +70°C Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: [email protected] Website: http://www.semelab.co.uk Prelim. 7/99 IP1060A IP1060A IP1060B ELECTRICAL CHARACTERISTICS (TJ = 25°C unless otherwise stated) Parameter Test Conditions IP1060 IP1060B Min. Typ. Max. 1 Min. IP1060A Typ. Max. Units EXTERNAL SYNCHRONISATION Pin 9 Off 0 0.8 0 0.8 Pin 9 On 2 VZ 2 VZ Pin 9, Sink Current VPin9 = 0V -85 -120 -85 -120 V mA REMOTE ON/OFF Pin 10 Off 0 0.8 0 0.8 Pin 10 On 2 VZ 2 VZ Pin 10 Sink Current Pin 9 =0V VPin9 = 0V V -85 -120 -85 -120 mA -2 -10 -2 -10 mA 0.7 0.8 0.7 0.8 Ds 560 600 700 560 600 700 mV 400 480 560 400 480 560 mV 9.5 6.2 to Pin 10 = 0V CURRENT LIMITING Pin 11 IIN VPin11 = 250mV Inhibit Delay Time for 20% Single Pulse Inhibit Delay Overdrive at IOUT = 30mA Trip Levels: Shut Down, Slow Start Trip Levels: Current Limit ERROR AMPLIFIER Output Voltage Swing (VOH) Output Voltage Swing (VOL) 6.2 9.5 0.7 Open Loop Gain 54 Feedback Resistor 10k 60 0.7 54 60 dB 3 MHz W 10k 3 Small Signal Bandwidth V OUTPUT STAGE VCE(sat) IC = 40mA Output Current (Pin 15) Max. Emitter Voltage (Pin 14) 0.4 40 5 0.4 V 40 mA 5 V SUPPLY VOLTAGE / CURRENT Voltage Feed V6 = 5V ICC R7 = 25kW IZ = 0 TJ = Over Temp. Range 2 10 10 mA 15 15 mA VCC ICC = 10mA, Current Feed 20 24 19 24 VCC ICC = 30mA, Current Feed 20 30 20 30 V NOTES 1. Test Conditions unless otherwise stated: VCC = 12V, TJ = 25°C. 2. Applies Over Full Operating Temperature Range: IP1060B TA = –55 to +125°C IP1060 TA = –25 to +85°C IP1060A TA = 0 to +70°C Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: [email protected] Website: http://www.semelab.co.uk Prelim. 7/99