CM6565

CM6565 Noise Free 16 pin Self-Start Interleaved PFC with 180 Degree Phase Shift CRM PFC Controller for 90+/85+ GENERAL DESCRIPTION The CM6565 is the industry first 16 pin self-start interleaved PFC with 180 degree phase shift CRM PFC controller for total power supply system efficiency greater 90% or 85%. The CM6565 is like a combination of two 180 degree phase shift CM6561s plus a lot of light load efficiency boost functions. CM6565 gives the best noise free performance of the offline power supply. The desired frequency range for each PFC controller should be above 35KHz. Mismatches between two boost converters for the FEATURES Patent Filed #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635, #6,091,233 Industry first interleaved PFC with 180 phase shift CCM for EMI filter but CRM for PFC boost diodes Due to ZCS and about ZVS, it is about noise free Design for LCD TV or 90+ power supply Critical Conduction Mode (CRM) = ZCS with about ZVS Current input multiplier, IAC (Patented) For 90+ system, an LLC or SRC should be the PWM For 85+ system, an Dual Forward or a half bridge should be the PWM At light load, PFC bulk will drop ~ 40V at low line and Slave PFC will be disabled (Patented) PGB pin also can be used to turn on the CM6900/CM6901 which is LLC/SRC controller for 90+ applications VRMS does not need high voltage resistor; IAC determines VRMS1 and VRMS2 AC Brown out by comparing VRMS2 with 1.25V on and 1.0V off No bleed resistor during the start up (Patented) Can ON-OFF high voltage bipolar during the system start up (Patented) 500mV Current Limit and about 130uS Current Loop Open time out protection Precision output over voltage protection comparator with 2.75V threshold which is 10% increased from 2.5V. GM for Fast line and load transient response (Patented) Soft Start pin at pin 6 Open control loop protection/Tri-Fault Detect Comparator for UL1950 (Patented) 16.5V 50mA Shunt Regulator at VCC Micro power start-up current (60uA Typ.) Very low operating supply current (1.5mA Typ.) Internal start up timer 1% precision 3mA Buffered 7.5V reference Totem pole driver output current: 30ohm (VCC=15V) sourcing current and 15 ohm (VCC=15V) sink current 16-Pin DIP/SOIC packages interleaved PFC can be less than +/-5%. Basically, it is like two 6561s work together with 180 degree phase shift plus light load improvements. 1. IAC (pin 1), Multiplier input pin: Current input instead of Voltage input; it will enhance input current THD and the system will be less sensitive to the noise. The system can reduce one resistor between ground and IAC, multiplier input pin. 2. IAC (pin 1), Multiplier input pin: During the start up condition (the VCC is less than UVLO, 13V), IAC is connected to VCC, and the RAC resistor (between VIN pin and IAC pin) serves as a bleed resistor. Once the VCC is greater than UVLO, then, RAC resistor provides the sine wave current from VIN pin to IAC pin. After VCC is greater than UVLO, the voltage of the IAC pin is around 1.4V. Therefore, the RAC resistor can be served as a bleed resistor. Usually, the value of the RAC is from 4Mega to 10Meg ohm. 3. IAC (pin 1), Multiplier input pin: During the start up, if the system turn-on time needs to be fast, an external high voltage bipolar and a diode can be added for VCC during the start-up, once VCC is greater than UVLO, 15V, IAC pin will go low and turn off the high voltage bipolar. 4. For the fast load transient and line transient, a transconductance error amplifier has been implemented between the output pin VEAO and the input pin VFB to replace the conventional OP. Since transconductance amplifier does not need the local feed back (OP needs the local feedback); therefore, its VFB can fast and accurately sense OVP condition not like traditional OP, operational amplifier can not sense VFB for OVP. 2008/10/09 Rev1.0 Champion Microelectronic Corporation Page 1 CM6565 Noise Free 16 pin Self-Start Interleaved PFC with 180 Degree Phase Shift CRM PFC Controller for 90+/85+ 5. Open Control Loop protection/Tri-Fault Detect Comparator on VFB pin for easy passing the single fault protection test of the UL1950 regulation. The CM6565’s interleaved PFC has two PFC controllers, Master PFC and Slave PFC. The Slave PFC is lagged ~ 180 degree phase shift from the Master PFC. Both PFC controllers consisted of ZCS plus about ZVS functions. It provides the high efficient of power supply at both full load and at light load. To input EMI filter, the currents are overlapping and it looks like a CCM boost system with double frequency. The ZCS plus about ZVS on feature reduce the EMI noise further. It has a superior performance multiplier making the device capable of working in universal input voltage range applications with an excellent THD. The totem pole output stage is capable of driving a power MOS or IGBT with +500mA source and -1A sink currents. The device is operating in transition mode and it is optimized for Electronic Lamp Ballast application, AC-DC adaptors and SMPS. APPLICATIONS LCD TV Desktop PC Power Supply AC Adaptor Internet Server Power Supply IPC Power Supply UPS Battery Charger DC Motor Power Supply Monitor Power Supply Telecom System Power Supply Distributed Power PIN CONFIGURATION DIP-016 (P016)/SOP-016 (S08) Top View 1 2 3 4 5 6 7 8 IAC ZCDmaster P G THL Vrms1 Vrms2 SS PGB Isense Master VEAO VFB Vref VCC PFCOUT(Mas) PFCOUT(Sla) GND Isense Slave 16 15 14 13 12 11 10 9 2008/10/09 Rev1.0 Champion Microelectronic Corporation Page 2 CM6565 Noise Free 16 pin Self-Start Interleaved PFC with 180 Degree Phase Shift CRM PFC Controller for 90+/85+ PIN DESCRIPTION Pin No. 1 Symbol IAC Description During Normal Operation: Multiplier input, it provides the information of line input voltage. It only needs one resistor (RAC) connected between line input and IAC pin. The value of RAC typically is between 4 Mega ohm to 10 Mega ohm 1 IAC During the System Start up: RAC serves as a bleed resistor for VCC pin 2 ZCDmaster Master PFC Zero current detection input. The threshold of the pin is 80mV. When ZCDmaster is greater than ~ 80mV, PFCOUT (master) may go high. When ZCDmaster is less than ~ 80mV, PFCOUT (master) is low. 3 PG THL PG THL is an input I/O. The user can program the Low Threshold of the Power Good which can determine the comparator output of PGB (open drain) to be pulled high. 4 Vrms1 AC Brown out input. It mirrors the IAC (pin1) current to Vrm1 and Vrms1 uses it with Rrms1 and Crms1 to generate the first pole; then it uses the second RC pole to interface with Vrms2 (pin5). AC brown out uses the Vrms1 to determine brown out point. Its threshold is 3V with 1V hysteresis. 5 Vrms2 Gain Modulator/Multiplier Vrms input. The value of Vrms2 should be 50% of Vrms1 average value. 6 SS PFC Soft Start pin: It supplies ~ 8uA to SS pin. It provides a close-loop soft start function during power supply start up. PFC Soft Start function can just need a simple capacitor to ground and it can be around 1uF. 7 PGB PGB is the PG comparator output. The input of PGB comparator is using Vfb (pin 15) to compare with the high threshold, 2.365V (preset internally) and the low threshold, PGTHL (pin 3, Set by user). When 380V is ready, pin 7 is open-drain and it will be pulled low. 0 VCC V 0 VCC V 0 5 V 0 5 V 0.75 2.3 V -0.3 0.7 V 0 VCC+1V V Min. Operating Voltage Typ. Max. 1.4 Unit V 2008/10/09 Rev1.0 Champion Microelectronic Corporation Page 3 CM6565 Noise Free 16 pin Self-Start Interleaved PFC with 180 Degree Phase Shift CRM PFC Controller for 90+/85+ Pin No. 8 Symbol Description Min. 0 Operating Voltage Typ. Max. 2 Unit V Isense Master The Input pin of the Master PFCCMP which is current sense comparator of the Master PFC control loop. The Power MOSFET current is sensed by a resistor and the resulting voltage needs to be filtered and it can be applied to this pin. Its maximum threshold is about 500mV. Its threshold is determined by the PFC multiplier output current and it is a sine wave current. Isense Master designed for cycle by cycle current shaping and cycle by cycle current limit. It also determines when the Isense Slave to turn off. 9 Isense Slave The Input pin of the Slave PFCCMP which is current sense comparator of the Slave PFC control loop. The Power MOSFET current is sensed by a resistor and the resulting voltage needs to be filtered and it can be applied to this pin. Its maximum threshold is about 500mV. Its threshold is determined by the PFC multiplier output current and it is a sine wave current. 0 2 V 10 11 GND PFCOUT (Slave) Ground Slave PFC driver output; It can drive Power MOSFET and IGBT with 30 ohm pulled up and 15 ohm pulled down. Master PFC driver output; It can drive Power MOSFET and IGBT with 30 ohm pulled up and 15 ohm pulled down. Supply voltage: It has a 50mA 16.5V shunt regulator. 10 15 18 V 0 VCC V 0 VCC V 12 PFCOUT (Master) 13 VCC 14 Vref 1% Precision 7.5V Reference Pin and it sources maximum 3 mA 7.5 V 15 VFB PFC transconductance voltage error amplifier input; it also senses PFCOVP when VFB is greater than 2.75V and it also turns off PFC when VFB is less than 0.5V. It is also the Tri-Fault Protection input. 0 2.5 3 V 16 VEAO PFC transconductance voltage error amplifier output; Low Power Detect Comparator input 0 6 V 2008/10/09 Rev1.0 Champion Microelectronic Corporation Page 4 CM6565 Noise Free 16 pin Self-Start Interleaved PFC with 180 Degree Phase Shift CRM PFC Controller for 90+/85+ BLOCK DIAGRAM VFB 15 VEAO 16 VRMS1 4 VRMS2 5 IAC 1 ZCDMASTER 2 ISENSE MASTER 8 ISENSE SLAVE 9 U8_SW VCC IAC U16_VEAO VFB VREFOK UVLOB VEAO U5_ZCDCMP MULO + SS 6 ISOFT 2.5V 2.25V 2V + + + + + VEAO . VRMS1 VRMS2 MULOUT PFCMASTEROFFB PFCSLAVEOFFB MASTERCLUB LITCHB ISENSESLAVE ISENSEMASTER ZCDMASTER GND + + U3_SRLATCH2 SB1 Q SB2 U1_DRIVER 12 PFC MASTER OUT 1V ISENS MASTER ISENSE SLAVE + + RB1 QB RB2 U12_SOFTPFC VEAO VDCOKB SOFTPFC VEAO VFB - U9_BLOCKWIRE BLOCKWIRE . . + 0.5V BLOCKWIREB U14_DCOKCMP VFB + . . U4_SRLATCH2 DCOK DCOKB U2_DRIVER 11 PFC SLAVE OUT U10_VINOKCMP VRMS2 + SB1 Q PG THL 3 2.5V VINOK . . U6_AND4 SB2 RB1 QB RB2 3V 2V PGB 7 MN1 - VINOKB U7_SYNC U11_PFCOVPCMP VFB + SYNCONB MASTERON SYNCOFFB TOOLONGB UVLOB VREFOK PFCOVPCMP . . SLAVEON GND VCC 13 2.75V 2.5V D1_ZENER GND - PFCOVPCMPB VREF 10 GND 14 VREF ORDERING INFORMATION Part Number CM6565GIP CM6565GIS Temperature Range -40℃ to 125℃ -40℃ to 125℃ Package 16-Pin PDIP (P016) 16-Pin SOP (S016) Note: 1.G : Suffix for Pb Free Product 2.Initial Accuracy : TA=25℃ 2008/10/09 Rev1.0 Champion Microelectronic Corporation Page 5 CM6565 Noise Free 16 pin Self-Start Interleaved PFC with 180 Degree Phase Shift CRM PFC Controller for 90+/85+ ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are those values beyond which the device could be permanently damaged. Parameter VCC MAX IAC (after start up) PFC OUT(Master) and PFC OUT (Slave) VEAO Voltage on Any Other Pin ICC Current (Average) Iac Input Current Iref Current Sense Input (ISENSEmaster and ISENSEslave) Zero Current Detector (ZCDmaster and PGTHL) (Source) Zero Current Detector (ZCDmaster and PGTHL) (Sink) Junction Temperature Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10 sec) Thermal Resistance (θJA) PDIP-016 SOP-016 Min. Max. 20 Units V V V V V mA uA mA V mA mA ℃ ℃ ℃ ℃ GND-0.3 GND – 0.3 GND-0.3 GND – 0.3 VCC VCC + 0.3 6.3 8 100 200 5 -0.3 6 0.1 -0.1 -40 -65 -40 150 150 125 260 80 150 ℃/W 2008/10/09 Rev1.0 Champion Microelectronic Corporation Page 6 CM6565 Noise Free 16 pin Self-Start Interleaved PFC with 180 Degree Phase Shift CRM PFC Controller for 90+/85+ ELECTRICAL CHARACTERISTICS TA=Operating Temperature Range (Note 1) unless otherwise stated, these specifications apply Vcc=+14V, CM6565 Symbol Parameter Test Conditions Min. Supply Voltage Section (VCC) Operating Range Turn-on Threshold Hysteresis Supply Current Section (VCC) Start-up Current Operating Supply Current Before turn-on (VCC=12V) CL=1nF @ 70KHz Shunt Regulator (VCC) Zener Threshold Voltage Apply VCC with Iop=20mA Voltage Error Amplifier (gmv) Input Voltage Range Transconductance Voltage Feedback Input Threshold 11V