MC44603ADWR2G

MC44603A_05 ONSEMI | Alldatasheet

Document overview

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Technical content

Features

• Pb−Free Packages are Available* Current or Voltage Mode Controller
• Operation up to 250 kHz Output Switching Frequency
• Inherent Feed Forward Compensation
• Latching PWM for Cycle−by−Cycle Current Limiting
• Oscillator with Precise Frequency Control High Flexibility
• Externally Programmable Reference Current
• Secondary or Primary Sensing7
• Synchronization Facility
• High Current Totem Pole Output
• Undervoltage Lockout with Hysteresis Safety/Protection Features
• Overvoltage Protection Against Open Current and Open V oltage Loop
• Protection Against Short Circuit on Oscillator Pin
• Fully Programmable Foldback
• Soft−Start Feature
• Accurate Maximum Duty Cycle Setting
• Demagnetization (Zero Current Detection) Protection
• Internally Trimmed Reference
• Enhanced Output Drive GreenLine Controller: Low Power Consumption in Standby Mode
• Low Startup and Operating Current
• Fully Programmable Standby Mode
• Controlled Frequency Reduction in Standby Mode
• Low dV/dT for Low EMI Radiations *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. 1 16 (Top View) VCC VC Output Rref Sync Input PIN CONNECTIONS GND Foldback Input Overvoltage Protection (OVP) Current Sense Input Demag Detection RFrequency Standby Voltage Feedback Input Error Amp Output RPower Standby Soft−Start/Dmax/ Voltage Mode CT PDIP−16 P SUFFIX CASE 648 SOIC−16 DW SUFFIX CASE 751G http://onsemi.com MARKING DIAGRAMS A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb−Free Package See detailed ordering and shipping information in the package dimensions section on page 21 of this data sheet.

ORDERING INFORMATION

http://onsemi.com MAXIMUM RATINGS Rating Symbol Value Unit Total Power Supply and Zener Current (ICC + IZ) 30 mA Supply Voltage with Respect to Ground (Pin 4) VC VCC 18 V Output Current (Note 1) mA Source IO(Source) −750 Sink IO(Sink) 750 Output Energy (Capacitive Load per Cycle) W 5.0 /C0109J RF Stby, CT, Soft−Start, Rref, RP Stby Inputs Vin −0.3 to 5.5 V Foldback Input, Current Sense Input, E/A Output, Voltage Feedback Input, Overvoltage Protection, Synchronization Input Vin −0.3 to VCC + 0.3 V Synchronization Input High State Voltage VIH VCC + 0.3 V Low State Reverse Current VIL −20 mA Demagnetization Detection Input Current mA Source Idemag−ib (Source) −4.0 Sink Idemag−ib (Sink) 10 Error Amplifier Output Sink Current IE/A (Sink) 20 mA Power Dissipation and Thermal Characteristics P Suffix, Dual−In−Line, Case 648 Maximum Power Dissipation at TA = 85°C PD 0.6 W Thermal Resistance, Junction−to−Air R/C0113JA 100 °C/W DW Suffix, Surface Mount, Case 751G Maximum Power Dissipation at TA = 85°C PD 0.45 W Thermal Resistance, Junction−to−Air R/C0113JA 145 °C/W Operating Junction Temperature TJ 150 °C Operating Ambient Temperature TA −25 to +85 °C Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. ESD data available upon request.

http://onsemi.com ELECTRICAL CHARACTERISTICS (VCC and VC = 12 V, (Note 2), Rref = 10 k/C0087, CT = 820 pF, for typical values TA = 25°C, for min/max values TA = −25° to +85°C (Note 3), unless otherwise noted.) Characteristic Symbol Min Typ Max Unit OUTPUT SECTION Output Voltage (Note 4) V Low State (ISink = 100 mA) Low State (ISink = 500 mA) VOL − 1.0 1.4 1.2 2.0 High State (ISource = 200 mA) High State (ISource = 500 mA) VOH − 1.5 2.0 2.0 2.7 Output Voltage During Initialization Phase VCC = 0 to 1.0 V, ISink = 10 /C0109A VCC = 1.0 to 5.0 V, ISink = 100 /C0109A VCC = 5.0 to 13 V, ISink = 1.0 mA VOL 0.1 0.1 1.0 1.0 1.0 V Output Voltage Rising Edge Slew−Rate (CL = 1.0 nF, TJ = 25°C) dVo/dT − 300 − V//C0109s Output Voltage Falling Edge Slew−Rate (CL = 1.0 nF, TJ = 25°C) dVo/dT − −300 − V//C0109s ERROR AMPLIFIER SECTION Voltage Feedback Input (VE/A out = 2.5 V) VFB 2.42 2.5 2.58 V Input Bias Current (VFB = 2.5 V) IFB−ib −2.0 −0.6 − /C0109A Open Loop Voltage Gain (VE/A out = 2.0 to 4.0 V) AVOL 65 70 − dB Unity Gain Bandwidth BW MHz TJ = 25°C − 4.0 − Voltage Feedback Input Line Regulation (VCC = 10 to 15 V) VFBline−reg −10 − 10 mV Output Current mA Sink (VE/A out = 1.5 V, VFB = 2.7 V) TA = −25° to +85°C ISink 2.0 12 − Source (VE/A out = 5.0 V, VFB = 2.3 V) TA = −25° to +85°C ISource −2.0 − −0.2 Output Voltage Swing V Low State (IE/A out (sink) = 0.33 mA, VFB = 2.7 V) VOL − 1.0 1.1 REFERENCE SECTION Reference Output Voltage (VCC = 10 to 15 V) Vref 2.4 2.5 2.6 V Reference Current Range (Iref = Vref/Rref, R = 5.0 k to 25 k/C0087) Iref −500 − −100 /C0109A Reference Voltage Over Iref Range /C0068Vref −40 − 40 mV OSCILLATOR AND SYNCHRONIZATION SECTION Frequency fOSC kHz TA = 0° to +70°C 44.5 48 51.5 TA = −25° to +85°C 44 − 52 Frequency Change with Voltage (VCC = 10 to 15 V) /C0068fOSC//C0068V − 0.05 − %/V Frequency Change with Temperature (TA = −25° to +85°C) /C0068fOSC//C0068T − 0.05 − %/°C 2. Adjust V CC above the startup threshold before setting to 12 V. 3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 4. V C must be greater than 5.0 V. 5. Standby is disabled for V R P Stby < 25 mV typical. 6. If not used, Synchronization input must be connected to Ground. 7. Synchronization Pulse Width must be shorter than t OSC = 1/fOSC. 8. This function can be inhibited by connecting Pin 8 to GND. This allows a continuous current mode operation. 9. This function can be inhibited by connecting Pin 5 to V CC. 10.The MC44603A can be shut down by connecting the Soft−Start pin (Pin 11) to Ground.

http://onsemi.com ELECTRICAL CHARACTERISTICS (continued) (VCC and VC = 12 V, (Note 2), Rref = 10 k/C0087, CT = 820 pF, for typical values TA = 25°C, for min/max values TA = −25° to +85°C (Note 3), unless otherwise noted.) Characteristic UnitMaxTypMinSymbol OSCILLATOR AND SYNCHRONIZATION SECTION Oscillator Voltage Swing (Peak−to−Peak) VOSC(pp) 1.65 1.8 1.95 V Ratio Charge Current/Reference Current Icharge/Iref − TA = 0° to +70°C (VCT = 2.0 V) 0.375 0.4 0.425 Fixed Maximum Duty Cycle = Idischarge/(Idischarge + Icharge) D 78 80 82 % Ratio Standby Discharge Current versus IR F Stby (Note 5) Idisch−Stby/ − TA = 0° to +70°C IR F Stby 0.46 0.53 0.6 VR F Stby (IR F Stby = 100 /C0109A) VR F Stby 2.4 2.5 2.6 V Frequency in Standby Mode (RF Stby (Pin 15) = 25 k/C0087) FStby 18 21 24 kHz Current Range IR F Stby −200 − −50 /C0109A Synchronization Input Threshold Voltage (Note 6) VinthH VinthL 3.2 0.45 3.7 0.7 4.3 0.9 V Synchronization Input Current ISync−in −5.0 − 0 /C0109A Minimum Synchronization Pulse Width (Note 7) tSync − − 0.5 /C0109s UNDERVOLTAGE LOCKOUT SECTION Startup Threshold Vstup−th 13.6 14.5 15.4 V Output Disable Voltage After Threshold Turn−On (UVLO 1) Vdisable1 V TA = 0° to +70°C 8.6 9.0 9.4 Reference Disable Voltage After Threshold Turn−On (UVLO 2) Vdisable2 7.0 7.5 8.0 V DEMAGNETIZATION DETECTION SECTION (Note 8) Demagnetization Detect Input Demagnetization Comparator Threshold (VPin 9 Decreasing) Vdemag−th 50 65 80 mV Propagation Delay (Input to Output, Low to High) − − 0.25 − /C0109s Input Bias Current (Vdemag = 65 mV) Idemag−lb −0.5 − − /C0109A Negative Clamp Level (Idemag = −2.0 mA) CL(neg) − −0.38 − V Positive Clamp Level (Idemag = 2.0 mA) CL(pos) − 0.72 − V SOFT−START SECTION (Note 10) Ratio Charge Current/Iref Iss(ch)/Iref − TA = 0° to +70°C 0.37 0.4 0.43 Discharge Current (Vsoft−start = 1.0 V) Idischarge 1.5 5.0 − mA Clamp Level Vss(CL) 2.2 2.4 2.6 V 2. Adjust V CC above the startup threshold before setting to 12 V. 3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 4. V C must be greater than 5.0 V. 5. Standby is disabled for V R P Stby < 25 mV typical. 6. If not used, Synchronization input must be connected to Ground. 7. Synchronization Pulse Width must be shorter than t OSC = 1/fOSC. 8. This function can be inhibited by connecting Pin 8 to GND. This allows a continuous current mode operation. 9. This function can be inhibited by connecting Pin 5 to V CC. 10.The MC44603A can be shut down by connecting the Soft−Start pin (Pin 11) to Ground.

http://onsemi.com ELECTRICAL CHARACTERISTICS (continued) (VCC and VC = 12 V, (Note 2), Rref = 10 k/C0087, CT = 820 pF, for typical values TA = 25°C, for min/max values TA = −25° to +85°C (Note 3), unless otherwise noted.) Characteristic UnitMaxTypMinSymbol SOFT−START SECTION (Note 10) Duty Cycle (Rsoft−start = 12 k/C0087) Duty Cycle (Vsoft−start (Pin 11) = 0.1 V) Dsoft−start 12k Dsoft−start OVERVOLTAGE SECTION Protection Threshold Level on VOVP VOVP−th 2.42 2.5 2.58 V Propagation Delay (VOVP > 2.58 V to Vout Low) 1.0 − 3.0 /C0109s Protection Level on VCC VCC prot V TA = 0° to +70°C 16.1 17 17.9 Input Resistance − k/C0087 TA = 0° to +70°C 1.5 2.0 3.0 FOLDBACK SECTION (Note 9) Current Sense Voltage Threshold (Vfoldback (Pin 5) = 0.9 V) VCS−th 0.86 0.89 0.9 V Foldback Input Bias Current (Vfoldback (Pin 5) = 0 V) Ifoldback−lb −6.0 −2.0 − /C0109A STANDBY SECTION Ratio IR P Stby/Iref IR P Stby/Iref − TA = 0° to +70°C 0.37 0.4 0.43 Ratio Hysteresis (Vh Required to Return to Normal Operation from Standby Operation) Vh/VR P Stby − TA = 0° to +70°C 1.42 1.5 1.58 Current Sense Voltage Threshold (VR P Stby (Pin 12) = 1.0 V) VCS−Stby 0.28 0.31 0.34 V CURRENT SENSE SECTION Maximum Current Sense Input Threshold (Vfeedback (Pin 14) = 2.3 V and Vfoldback (Pin 6) = 1.2 V) VCS−th 0.96 1.0 1.04 V Input Bias Current ICS−ib −10 −2.0 − /C0109A Propagation Delay (Current Sense Input to Output at VTH of MOS transistor = 3.0 V) − − 120 200 ns TOTAL DEVICE Power Supply Current ICC mA Startup (VCC = 13 V with VCC Increasing) − 0.3 0.45 Operating TA = −25° to +85°C (Note 2) 13 17 20 Power Supply Zener Voltage (ICC = 25 mA) VZ 18.5 − − V Thermal Shutdown − − 155 − °C 2. Adjust V CC above the startup threshold before setting to 12 V. 3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 4. V C must be greater than 5.0 V. 5. Standby is disabled for V R P Stby < 25 mV typical. 6. If not used, Synchronization input must be connected to Ground. 7. Synchronization Pulse Width must be shorter than t OSC = 1/fOSC. 8. This function can be inhibited by connecting Pin 8 to GND. This allows a continuous current mode operation. 9. This function can be inhibited by connecting Pin 5 to V CC. 10.The MC44603A can be shut down by connecting the Soft−Start pin (Pin 11) to Ground.

Figure 1. Representative Block Diagram This device contains 243 active transistors.

9 Vref

0.4 Iref

Figure 8. Oscillator Discharge Current Figure 9. Source Output Saturation Voltage Figure 10. Sink Output Saturation Voltage Figure 11. Error Amplifier Gain and Phase

120 Hz Rate

Figure 12. Voltage Feedback Input Figure 13. Demag Comparator Threshold

Figure 26. Standby Reference Current Figure 27. Current Sense Voltage Threshold 1 VCC This pin is the positive supply of the IC. The operating voltage range after startup is 9.0 to 14.5 V. source, it can reduce the effects of switching noise on the control circuitry. transistors. This output pin must be shunted by a Schottky diode, 1N5819 or equivalent. startup and sharper overload protection. Above 1.0 V the foldback input is inactive.

6 Overvoltage

requires a complete restart sequence. The overvoltage level is programmable.

7 Current Sense

operation. A maximum level of 1.0 V allows either current or voltage mode operation.

8 Demagnetization

inhibited by connecting Pin 8 to GND.

9 Synchronization

3.7 V. The oscillator runs free when Pin 9 is connected to GND. resistance value. CT, connected between Pin 10 and GND, generates the oscillator sawtooth.

11 Soft−Start/Dmax/

be used as a voltage mode control input. By connecting Pin 11 to Ground, the MC44603A can be shutdown. allows to return in the normal mode at a higher output power level. 13 E/A Out The error amplifier output is made available for loop compensation.

14 Voltage

through an optical (or other) feedback loop. 15 RF Standby The reduced frequency or standby frequency programming is made by the R F Standby resistance choice.

Figure 34. Output Totem Pole

7 C RS

any series wiring inductance in the gate−source circuit.

• The Sawtooth Generation: In the steady state, the oscillator voltage varies between about 1.6 V and 3.6 V . The sawtooth is obtained by charging and discharging an external capacitor C T (Pin 10), using two distinct current sources = Icharge and Idischarge . In fact, CT is permanently connected to the charging current source (0.4 I ref) and so, the discharge current source has to be higher than the charge current to be able to decrease the C T voltage (refer to Figure 36). This condition is performed, its value being (2.0 I ref) in normal working and (0.4 Iref + 0.5 IF Stby in standby mode).

Figure 35. Oscillator Figure 36. Simplified Block Oscillator synchronization or demagnetization pulse before restarting. source that permanently supplies CT. allowed only during the oscillator capacitor charge.

Figure 40. Power Losses in a Classical PICL only depends on the current drawn from the mains. decreases when the standby losses are reduced. decreasing the switching frequency as much as possible. frequency lower than the normal working one.

• Standby Power Calculations with MC44603A During a switching period, the energy drawn by the transformer during the on−time to be transferred to the output during the off−time, is equal to: E /C00431 2 xLxI pk2 where: − L is the transformer primary inductor, − lpk is the inductor peak current. Input power is labelled Pin: Pin /C00430 . 5xLxI pk2 xf S where fS is the normal working switching frequency. Also, Ipk /C0043VCS RS where RS is the resistor used to measure the power switch current. Thus, the input power is proportional to VCS2 (VCS being the internal current sense comparator input). That is why the standby detection is performed by creating a VCS threshold. An internal current source (0.4 x Iref) sets the threshold level by connecting a resistor to Pin 12. As depicted in Figure 41, the standby comparator noninverting input voltage is typically equal to (3.0 x VCS + VF) while the inverter input value is (VR P Stby + VF).

Figure 41. Standby

0.2 Iref

VCS threshold level that is equal to [2.5 x (V R P Stby)/3]. current source (0.6 x Iref) is connected to Pin 12. Figure 42. Dynamic Mode Change Figure 43. Dmax and Soft−Start

2.4 VDZ

Figure 44. Maximum Duty Cycle Control voltage can easily be set by connecting a resistor to this pin. (Pin 1) voltage drops below 9.0 V . Figure 45. Different Possible Uses of Pin 11 soft−start and maximum duty cycle limitation. a programmable peak current limitation. maximum value (normally, VCS max = 1.0 V). can be obtained (refer to Figure 46).

Figure 49. 250 W Input Power Off−Line Flyback Converter with MOSFET Switch

185 VAC

270 VAC

• Diode D15 is required if the negative current into the output pin exceeds 15 mA.

http://onsemi.com

250 W Input Power Fly−Back Converter

185 V − 270 V Mains Range

MC44603AP & MTP6N60E Tests Conditions Results Line Regulation 150 V 130 V 114 V 7.0 V Vin = 185 VAC to 270 VAC Fmains = 50 Hz Iout = 0.6 A Iout = 2.0 A Iout = 2.0 A Iout = 2.0 A 10 mV 10 mV 10 mV 20 mV Load Regulation 150 V Vin = 220 VAC Iout = 0.3 A to 0.6 A 50 mV Cross Regulation 150 V Vin = 220 VAC Iout (150 V) = 0.6 A Iout (30 V) = 0 A to 2.0 A Iout (14 V) = 2.0 A Iout (7.0 V) = 2.0 A < 1.0 mV Efficiency Vin = 220 VAC, Pin = 250 W 81% Standby Mode P input Switching Frequency Vin = 220 VAC, Pout = 0 W 3.3 W 20 kHz fully stable Output Short Circuit Pout (max) = 270 W Safe on all outputs Startup Pin = 250 W VAC = 160 V DEVICE ORDERING INFORMATION Device Operating Temperature Range Package Shipping† MC44603AP TA = −25°C to +85°C PDIP−16 25 Units / Rail MC44603APG PDIP−16 (Pb−Free)

25 Units / Rail

MC44603ADW SOIC−16 47 Units / Rail MC44603ADWG SOIC−16 (Pb−Free)

47 Units / Rail

MC44603ADWR2 SOIC−16 1000 / Tape & Reel MC44603ADWR2G SOIC−16 (Pb−Free) 1000 / Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.

http://onsemi.com PACKAGE DIMENSIONS PDIP−16 CASE 648−08 ISSUE T NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. −A− B F C S H G D J L M 16 PL SEATING 916 K PLANE−T− MAM0.25 (0.010) T DIM MIN MAX MIN MAX MILLIMETERSINCHES A 0.740 0.770 18.80 19.55 B 0.250 0.270 6.35 6.85 C 0.145 0.175 3.69 4.44 D 0.015 0.021 0.39 0.53 F 0.040 0.70 1.02 1.77 G 0.100 BSC 2.54 BSC H 0.050 BSC 1.27 BSC J 0.008 0.015 0.21 0.38 K 0.110 0.130 2.80 3.30 L 0.295 0.305 7.50 7.74 M 0 10 0 10 S 0.020 0.040 0.51 1.01 /C0095/C0095/C0095/C0095 SOIC−16WB CASE 751G−03 ISSUE C D 14X B16X SEATING PLANE SAM0.25 B ST 16 9 h X 45/C0095 MBM0.25 H8X E B A e T A L C /C0113 NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSIONS D AND E DO NOT INLCUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 TOTAL IN EXCESS OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM MIN MAX MILLIMETERS A 2.35 2.65 A1 0.10 0.25 B 0.35 0.49 C 0.23 0.32 D 10.15 10.45 E 7.40 7.60 e 1.27 BSC H 10.05 10.55 h 0.25 0.75 L 0.50 0.90 q 0 7 /C0095/C0095 ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 MC44603A/D GreenLine is a trademark of Motorola, Inc. LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 61312, Phoenix, Arizona 85082−1312 USA Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative.