IP5560C SEME-LAB | Alldatasheet

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Technical content

Prelim. 4/95Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. SWITCHED–MODE POWER SUPPLY CONTROL CIRCUIT

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 SUPPLY Voltage Sourced Current Sourced OUTPUT TRANSISTOR Output Current Collector Voltage (Pin 15) Maximum Emitter Voltage (Pin 14) T J Operating Junction Temperature TSTG Storage Temperature Range 18V 30mA 40mA 18V See Ordering Information –65 to +150°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 (150) SOIC GND CCV ZV FEEDBACK GAIN MODULATOR DUTY CYCLE CONTROL C T R T CURRENT LIMITING REMOTE ON/OFF EXTERNAL SYNC OUTPUT (EMITTER) DEMAGNETISATION / OVERVOLTAGE FEED FORWARD OUTPUT (COLLECTOR) Part J–Pack N–Pack D–16 Temp. Number 16 Pin 16 Pin 16 Pin Range IP5560 4 -55 to +125°C IP5560C 444 0 to +70°C Order Information Note: To order, add the package identifier to the part number. eg. IP5560J IP5560CD–16

Prelim. 4/95Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. REFERENCE VOLTAGE STABILISED SUPPLY 100W 0.48V SAWTOOTH GENERATOR 0.6V 0.6V 1kW 0.6V R S START STOP 0.48V 0.6V LATCH 0.6V S R FEEDBACK VOLTAGE GAIN ADJUST MODULATOR INPUT DUTY CYCLE CONTROL CURRENT LIMITING REMOTE ON/OFF 11 6 GNDCCV zV Emitter Collector OUTPUTS FEED FORWARD TR TC EXTERNAL SYNC INPUT DEMAGNETISATION OVER-VOLTAGE PROTECTION 1398716 CCV BLOCK DIAGRAM

DESCRIPTION

The IP5560 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, internal reference, sawtooth generator, pulse width modulator, output stage and various protection circuits.

Prelim. 4/95Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. Internal Reference Voltage (VREF ) Temperature Coefficient of VREF Internal Reference (VZ) Temperature Coefficient of VZ Frequency Range Initial Accuracy Oscillator Duty Cycle Range Modulator Input Current Pin 6 Input Current Pin 6 Duty Cycle Limit Control (for 50% Max. Duty Cycle) Pin 1 Low Supply Voltage Protection Thresholds Pin 3 Feedback Loop Protection Trip Thresholds Pin 3 Pull Up Current Pin 13 Demagnetisation / Over- Voltage Protection Threshold Pin 13 Input Current Pin 16 Feed Forward Duty Cycle Control Pin 16 Feed Forward Input Current T J = Over Temp. Range IL = –7mA TJ = Over Temp. Range R = 5kW fO = 20kHz Voltage at Pin 5 = 2V TJ = Over Temp. Range At 2V T J = Over Temp. Range f = 15kHz to 50kHz V pin6= 0.4VZ At 2V At 0.25V TJ = Over Temp. Range Voltage at Pin 16 = 2VZ At 16V V CC = 18V 3.69 3.72 3.81 3.65 3.85 ±100 7.8 8.4 8.8 ±200 50 100k 0–90 0–98 –0.2 –20 –0.2 –20 40 50 60 8 9 10.5 400 600 720 –7 –15 –35 470 600 720 –0.6 –10 –20 30 40 50 0.2 5 V ppm/°C V ppm/°C Hz mA mA % Duty Cycle V mV mA mV mA % Orig. Duty Cycle mA 3.57 3.72 3.95 3.53 4.00 ±100 7.8 8.4 8.8 ±200 50 100k 0–90 0–98 –0.2 –20 –0.2 –20 40 50 60 8 9 10.5 400 600 720 –7 –15 –35 470 600 720 –0.6 –10 –20 30 40 50 0.2 5 IP5560 IP5560C ELECTRICAL CHARACTERISTICS (TJ = 25°C unless otherwise stated) MODULATOR SUPERVISORY FUNCTIONS REFERENCE SECTIONS OSCILLATOR SECTION NOTES 1) Test Conditions: VCC = 12V , TJ = 25°C unless otherwise stated 2) Tests marked TJ = Over Temp. Range apply over the full temperature range ie. T J = -55 to +125°C for IP5560 TJ = 0 to +70°C for IP5560C

Prelim. 4/95Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. IP5560 IP5560C 0 0.8 2V Z -85 -125 0 0.8 2V Z -85 -125 -2 -10 0.7 0.8 560 600 700 400 480 500 6.2 9.5 0.7 54 60 0.5 20 24 20 30 0 0.8 Z -85 -125 0 0.8 2V Z -85 -125 -2 -10 0.7 0.8 560 600 700 400 480 500 6.2 9.5 0.7 54 60 0.5 19 24 20 30 V mA V mA mA ms mV V dB kW MHz V mA V mA V Pin 9 Off Pin 9 On Pin 9 Sink Current Pin 10 Off Pin 10 On Pin 10 Sink Current Pin 11 I IN Single Pulse Inhibit Delay Trip Levels: Shut Down, Slow Start Trip Levels: Current Limit Output Voltage Swing (VOH ) Output Voltage Swing (VOL ) Open Loop Gain Feedback Resistor Small Signal Bandwidth V CE(sat) Output Current Max. Emitter Voltage Supply Current (ICC ) Supply Voltage (VCC ) Voltage at Pin 9 = 0V TJ = Over Temp. Range Voltage at Pin 9 = 0V TJ = Over Temp. Range Voltage at Pin 11 = 250mV Inhibit Delay Time for 20% Overdrive at 30mA I OUT IC = 40mA (Pin 15) (Pin 14) I Z = 0 , Voltage Fed , VPIN6 = 0.5V R PIN7 = 25kW TJ = Over Temp. Range ICC = 10mA , Current Feed ICC = 30mA , Current Feed ELECTRICAL CHARACTERISTICS (TJ = 25°C unless otherwise stated) CURRENT LIMITING ERROR AMPLIFIER OUTPUT STAGE SUPPLY VOLTAGE/CURRENT EXTERNAL SYNCHRONISATION REMOTE ON/OFF NOTES 1) Test Conditions: VCC = 12V , TJ = 25°C unless otherwise stated 2) Tests marked TJ = Over Temp. Range apply over the full temperature range ie. T J = -55 to +125°C for IP5560 TJ = 0 to +70°C for IP5560C

Prelim. 4/95Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. FREQUENCY (Hz) -180 -150 -120 -90 -60 -30 1k 10k 100k 1M 10M PHASE ANGLE (˚) FREQUENCY (Hz) 1k 10k 100k 1M 10M GAIN (dB) TYPICAL PERFORMANCE CHARACTERISTICS — ERROR AMPLIFIER Open Loop Phase Open Loop Gain d – DUTY CYCLE (%) INPUT VOLTAGE (V) 100 0123456 VPins 4,5 or 6 d – ERROR AMP CLOSED LOOP GAIN 0 1 02 03 04 05 06 07 08 09 0 0.1 R 1 R S = 20 R S = 100 R 1 R S = 500 R 1 – REGULATION (%)V REF V O (3.72V) VREF RS VO Transfer Curve of Pulse Width Modulator Duty Cycle vs Input Voltage Regulation vs Error Amp Closed Loop Gain

Prelim. 4/95Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. TYPICAL PERFORMANCE CHARACTERISTICS — ERROR AMPLIFIER Power Derating Curve Voltage / Current Fed Supply Characteristics Duty Cycle Sensitivity To Feed Forward Voltage (Pin 16) Typical Frequency Plot vs R T and CT T AMBIENT TEMPERATURE (˚C)A P MAX (W)D 0.00 0.25 0.50 0.75 1.00 1.25 -50 -25 0 25 50 75 100 125 150 V SUPPLY VOLTAGE (V)CC 0 1 02 03 0 I SUPPLY CURRENT (mA)CC PD =V CC ICC + ( VCC – VZ ) IZ + [ ( Vpin15– Vpin14) Ipin15x d ] d – DUTY CYCLE (%) 100 1.00 1.50 2.00 2.50 VPIN16 / VZ OSCILLATOR FREQUENCY (kHz) 100 200 TIMING CAPACITANCE (nF) R = 5kW R = 10kW R = 20kW R = 40kW

Prelim. 4/95Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. 11 0 3 0 d max = 90% d max = 70% d max = 50% d max = 30% d SOFT START DUTY CYCLE (%)0 (kW)+1R 2R TYPICAL PERFORMANCE CHARACTERISTICS — ERROR AMPLIFIER Soft Start Min. Duty Cycle vs R 1 + R2 Current Fed Dropping Resistor Graph for Determining dd max GND VCCR SV CCV 100 d – MAXIMUM DUTY CYCLE (%)max 1R 2R+ ZV DUTY CYCLE CONTROL VS – VCC R VCC = (10 to 20 mA) See DC Electrical Characteristics For Current Feed VCC Range