CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs GENERAL DESCRIPTION FEATURES CM6901 is a SLS, SRC/LLC + SR resonant controller 90+ Controller and it can operate at both SRC and LLC region with Smaller and Thinner Transformer synchronous rectification to achieve high efficiency. Its 20ms with reasonable Bulk Cap(hold up time) unique features: FM + 2 PWMING modes. It is used for SLS, SRC/LLC + SR resonant controller DC-DC conversion in offline application. Supply Voltage Range : 10V to 20V. Light load regulation is accomplished by transitioning 2 Gate Drivers: Typical Peak Drive from 12V the controller from frequency modulation mode into supply : (PMOS~200 ohm and NMOS~100 ohm). PWM mode. To have the optimal balance performance UVLO =11V with 1V Hystetesis. between hold-up time and efficiency, its frequency range Reference OK Comparator. crosses fr1(resonant frequency). FM + 2 PWMING Mode Operation Light Load PWMING (light load regulation) CM6901 system has a constant voltage feedback loop SR Ideal Diode PWMING(cross resonant frequency with precision 2.5V VFB reference. The 1V ILIMIT can application ) be latched when a standby converter is applied; GM FEAO, FM modulation Error Amplifier otherwise, it is an auto-restart I limit. GM DEAO, PWM Error Amplifier Close Loop Soft start Capability with Shutdown Function. Auto-Restart during Current Limit . Precision 2.5V VFB threshold for constant voltage feedback loop. APPLICATIONS Precision 1V I limit threshold. Patented CM6901 Pin Configuration DC-DC power supply. 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 1 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs ORDERING INFORMATION Part Number Temperature Range Package CM6901XIS* -40℃ to 125℃ 16-Pin SOP (S16) CM6901XISTR* -40℃ to 125℃ 16-Pin SOP (S16) CM6901XIP* -40℃ to 125℃ 16-Pin PDIP (P16) *Note : X : Suffix for Halogen Free and PB Free Product TR : Package is Typing Reel BLOCK DIAGRAM 3 2 FEAO VCC UVLO/REF + - 2.5V VREF 16 V Tol . 1 15 VFB - RSET GND 10 + 1.5V . - 4 5 6 D IN. D IN+ 1.25V + PRIDRV 14 DEAO - VCC 7.5uA 7 PRIDRVB 13 . + SRDRV 12 Logic CSS SRDRVB 11 + SHDN 1V . ILIM + 9 RTCT 2012/05/09 Rev2.0 CLK OSC Champion Microelectronic Corporation . 8 ILim - 1V Page 2 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs PIN DESCRIPTION Pin No. Symbol Operating Voltage Description Min. External resistor which convert FEAO voltage signal into current 1 RSET Typ. 0 Max. Unit 5.5 V 3 V signal for frequency modulation. SR is PWMing Control , when RSET lower than 1.5V. 2 VFB 3 FEAO Non-inverting input into resonant error amplifier . 0 2.5 Resonant error amplifier output and compensation node for 0 5.5 V frequency modulation control. 4 D_IN- Inverting input into PWM error amplifier. 0 6 V 5 D_IN+ Non-inverting input into PWM error amplifier. 0 6 V 6 DEAO PWM error amplifier output and compensation node for PWM 0 4.5 V 0 5.5 V 1.25 V 1.2 3 V control. Soft start for FM/PWM operation with 1V enable threshold. Also, 7 CSS 8 ILIM 9 RTCT Oscillator timing components which set the minimum frequency. 10 GND Ground 11 SDRVB Synchronous MOSFET driver output. -0.3 VCC V 12 SDRV Synchronous MOSFET driver output. -0.3 VCC V 13 PRIDRVB Primary side MOSFET driver output. -0.3 VCC V 14 PRIDRV Primary side MOSFET driver output. -0.3 VCC V 15 VCC Positive supply for the IC 10 20 V 16 VREF 2012/05/09 Rev2.0 use for auto-restart operation during current limit. Input to current comparator with 1V threshold. Buffered output for the 7.5V voltage reference Champion Microelectronic Corporation 0 1 15 7.5 V Page 3 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs ABSOULTE MAXIMUM RATINGS (TA=25℃, unless otherwise specified.) The following ratings designate persistent limits beyond which damage to the device may occur. Symbol Parameter Value Unit -0.3 to 20 V VCC DC Supply Voltage SRDRV SRDRV Voltage -0.3 to VCC+0.3 V SRDRVB SRDRVB Voltage -0.3 to VCC+0.3 V PRIDRV PRIDRV Voltage -0.3 to VCC+0.3 V PRIDRVB PRIDRVB Voltage -0.3 to VCC+0.3 V VREF VREF Voltage 7.8 V RTCT RTCT Voltage -0.3 to VREF+0.3 V VILIM VILIM Voltage -0.3 to VREF+0.3 V CSS CSS Voltage -0.3 to VREF+0.3 V DEAO PWM Error Amplifier Output Voltage -0.3 to VREF+0.3 V D_IN+ Non-Inverting Input Into PWM Error Amplifier Voltage -0.3 to VREF+0.3 V FEAO Resonant Error Amplifier Output Voltage -0.3 to VREF+0.3 V VFB Non-Inverting Input Into Resonant Error Amplifier Voltage -0.3 to VREF+0.3 V RSET V to I Voltage -0.3 to VREF+0.3 V 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 4 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs ELECTRICAL CHARACTERISTICS (VCC=12V, RT=40.2K±1%, CT=1470PF±1%, Freq. = 50 KHz, Duty Cycle=48% , Temp= -40 ~ 125 ℃, unless otherwise specified.) Parameter Symbol Conditions Min. Typ. Max. Unit VREF TA=25℃; Iref=1mA 7.41 7.5 7.59 V VREF TA=-40℃; Iref=0mA 7.44 7.53 7.62 V VREF TA=125℃; Iref=0mA 7.53 7.67 7.7 V 10 25 mV 0 10 25 mV 10.5 10.8 11.1 V 9.5 10 10.5 V 63.5 78.25 93 uA 0.95 1 1.05 V VREF (pin 16) Reference Voltage Line Regulation 11.5V < Vcc < 16.5V Load Regulation 0mA < Iref < 5mA, TA=25℃ VCC (pin 15) VCC Start up voltage Vstart VCC Turn off voltage TA=25℃ VCC Start up current UVLO Hysteresics Hys Operating Current ICC TA=25℃ 1 mA SRDRVB , SRDRV , PRIDRVB , PRIDRV (pin 11,12,13,14) Output Low Voltage Vol Isrdrv=-6mA Output High Voltage Voh Isrdrv=+6mA Iout peak source current 0.6 9.6 1.2 V 10.8 V Iout 0.12 A Iout peak sink current Iout 0.12 A PMOS Rdson Rout TA=25℃ 200 250 Ohm NMOS Rdson Rout TA=25℃ 100 150 Ohm Dead Time between PRIDRV and PRIDRVB TDead TA=25℃ 1 Rising Edge Delay Between PRIDRV and SRDRV TDelay TA=25℃ 164 205 246 ns Falling Edge Delay Between SRDRV and PRIDRV TDelay TA=25℃ 168 210 252 ns us Rise Time on all channels CL=100pF 65 ns Fall Time on all channels CL=100pF 30 ns Duty Cycle Range 0 50 % ILIM (pin 8) Threshold Voltage TA=25℃ 1.45 1.65 1.75 V SS Voltage Hi TA=25℃ 0.95 1 1.05 V SS Voltage Low TA=25℃ 1.31 1.64 1.97 V 2012/05/09 Rev2.0 Vth Champion Microelectronic Corporation Page 5 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs ELECTRICAL CHARACTERISTICS (VCC=12V, RT=40.2K±1%, CT=1470PF±1%, Freq. = 50 KHz, Duty Cycle=48% , Temp=-40 ~ 125℃, unless otherwise specified.) Parameter Symbol Conditions Min. Typ. Max. Unit CSS (pin 7) Soft Start Current Iss TA=25℃ 6.3 7.5 8.8 uA Enable Voltage Ven TA=25℃ 0.9 1.0 1.1 V Enable Hysteresis Vhys TA=25℃ Auto-restart Upper Threshold Vup Auto-restart Lower Threshold Vlw 100 4.85 5.0 mV 5.15 1-Vhyst V V FEAO Resonant Error Amplifier (pin 3) Input Voltage Range Transconductance Gm VFB±50mV, TA=25℃ 6 V 37 49.5 62 umho TA=25℃ 2.48 2.5 2.52 V TA=125℃ 2.49 2.51 2.53 V TA=-40℃ 2.47 2.49 2.51 V -1 -0.5 uA Output High Voltage 5.5+VBE V Output Low Voltage 0.1 0.4 V VFB (Pin2) Feedback Reference Voltage (note 2) Input Bias Current Sink Current VFB =250mV , TA=25℃ -21.5 -17.55 -13.6 uA Source Current VFB = -250mV , TA=25℃ 12.4 16.7 21 uA Open Loop Gain 60 dB DEAO PWM Error Amplifier (pin 6) Input Voltage Range Reference Voltage 6 V 0.96 1.01 1.06 V 95 125 155 umho -1.0 -0.5 uA Output Voltage High 3+VBE V Output Voltage Low 0.1 Sink Current -5 uA Source Current 7 uA Open Loop Gain 60 dB Transconductance Input Bias Current 2012/05/09 Rev2.0 Gm TA=25℃ Champion Microelectronic Corporation 0.4 Page 6 V CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs ELECTRICAL CHARACTERISTICS (VCC=12V, RT=40.2K±1%, CT=1470PF±1%, Freq. = 50 KHz, Duty Cycle=48% , Temp=-40 ~ 125 ℃, unless otherwise specified.) Parameter Symbol Conditions Min. Typ. Max. Unit 45 50 55 Khz RTCT Oscillator ; RT=40.2K±1%;CT=1470pF±1%, (pin 9) Initial Accuracy TA=25℃ Voltage Stability 11.5V < Vcc < 16.5V 1 % Temperature Stability 2 % Ramp Valley to Peak Voltage 2 V 350 nS CT Discharge Time Maximum Duty cycle DEAO > 3.0V 48 % Minimum Duty Cycle DEAO < 1.2V 0 % SR Ideal Diode ; Rset1=30.1K±1% ; Rset2=215K±1% (pin12) Maximum Duty cycle TA=25℃ , FEAO=2.2V 37.4 44 50.6 % Middle Duty cycle TA=25℃ , FEAO=1.57V 28.4 30.2 32 % Minimum Duty cycle TA=25℃ , FEAO=0V 26.37 29.3 32.23 % TA=25℃ 22.14 24.6 27.06 KHz Frequency at Minimum Duty cycle 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 7 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs Timing Diagram Dead Time PRIDRVB PRIDRV Rising Edge Delay Time Falling Edge Delay Time Oscillator The oscillator frequency is determined by the values of RT and CT. fosc = 1 / (tRAMP + t DEADTIME) tRAMP = RT * CT * ln((VREF + ICHG*RT -1.25)/(VREF + ICHG*RT -3)) where ICHG = 4*(FEAO-VBE)/RSET Resonant Section FM Modulator Frequency modulation of the resonant controller section is accomplished by controlling the charging current of the oscillator through resonant error amplifier. The frequency of the resonant section is ½ of the oscillator frequency. Compensation is accomplished by connecting R and C in series to the FEAO pin. ICHG = 4*(FEAO-VBE)/RSET ICHG(max) = 20V/RSET 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 8 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs Vref RT VFB + . 2.5V FEAO V Tol OSC - RSET Vref Rest2 CT Rset1 2 PWMings: SR Ideal Diode PWMing (Synchronous Outputs) SR Ideal Diode PWMing for synchronous drivers is accomplished by comparing the voltage signal at the RSET pin to RTCT ramp. The pulse-width reduction happens when the voltage at the RSET is lower than 1.5V. This allows safe operation of the power converter with synchronous rectification when the switching frequency is below the highest resonant point frequency fr1. Vout Vref Rf1 3V RT VFB + . Rf3 2.5V FEAO 1.25V V Tol OSC . - TO Logic + 1.5V RSET Rest2 Vref CT Rset1 Decreasing Pulsewidth with V(RSET)<1.5V SRDRV PRIDRV 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 9 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs Light Load PWMING In a typical Application, low gain configuration accomplished by connecting Rdeao1 and Rdeao2 in the closed loop configuration . The gain for the PWM is determined by Rdeao1 and Rdeao2 where the gain is equal to - Rdeao2/ Rdeao1. The voltage of VRset at which the controller goes into FM and PWM simultaneously is equal to : VRset = D_IN+ × (1+ Rdeao1/ Rdeao2) - (Rdeao1/ Rdeao2) × 3 where 3 is the peak voltage of RTCT Vary in Rset from VRset to VRset + 1.75 × Rdeao1/ Rdeao2 will cause the duty cycle to vary from 50% to 0% while the frequency will vary propotionally according to 1.75* Rdeao1/ Rdeao2 where 1.75 is the peak-to-peak voltage of the RTCT ramp. For proper operation, select Rdeao2 value so that the current through Rdeao2 {((D_IN+) 1.2)/ Rdeao2} should be less than 5uA. Vout Vref Rf1 RT VFB + . Rf3 2.5V FEAO V Tol OSC Rest2 - Rdeao1 Rset1 Rdeao2 Vref D_IN- . D_IN+ CT Vref RSET DEAO - + . PW M + RTCT 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 10 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs Soft Start and Enable Soft start of the FM and PWM is controlled by the selection of the external capacitor at CSS pin. A current source of 7.5uA supplies the charging current for the capacitor. Soft start of the FM and PWM begins at 1.25V. The soft start pin CSS also serves as an enable function. The output drivers are enabled when CSS pin reached 1V. Auto-retry Mode During normal operation, CSS pin will be charged to 5.5V + VBE. When VFB exceeds 2.93V due to ILIM exceeds 1V due to over current condition, output drivers are immediate set to low , and CSS begins to discharge with 0.75uA current source. When CSS pin is below 0.9V, 7.5uA current source start charging the CSS pin. When CSS pin reaches 1V, the output drivers are re-enable and the controller goes into soft start mode. If over current condition still exists then, the outputs are immediately disabled, but CSS continues to charge toward 5V. When CSS reaches 5V, 7.5uA charging current is disabled and 0.75uA current source begins to discharge the CSS, and the cycle repeat until over current condition is removed. OCP Setting 5.5 V+VBE 5V Css 0.9V 1V ILimit 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 11 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs TYPICAL APPLCATION CIRCUIT PFC L T2 F1 250V 6.3A HSB TR18*10*10 T1 BD1 D10XB60 (10A/600V) TR18*10*10 1 3 H15 4 1 1 BC1 R2 1uF/450V 2 220pF/2KV 1 H14 D28 0.1 t 1N5406 (3A/600V) D29 RT1 2.5Ω/5A RL1 835NL-1A-B-C 9V 2 1 4 3 C69 NC 1N5406 (3A/600V) VCCP Q26 NC 2 3 D23 NC 1 N 4 2 3 4 2 3 C3 0.22uF 275V C2 0.22uF 275V C6 + 220pF/2KV - 1 C5 FR1 910K 1/2W R92 NC ZD6 NC 380VDC 7 5 9 380VDC 1 C20 1000pF 1M IEAO C19 100pF R23 14 VEAO R100 10K 0.47uF 2 IAC VFB 243K ISENSE C22 0.047UF 5 SS C21 1000pF 11 + 0.1uF C25 0.1uF R13 69.8K 1% PFC OUT PGTHL PGB 7 RAMP1 GND + C9 220uF/450V 1 D4 SCS140P R20 22K 10 R11 10 R33 0 9 R38 27K Q1 20N60C3 (20A/600V) R39 10 Q2 2N2907 C70 22uF/25V PGB 6 R12 13K VCC Vrms R34 13K 1% C10 102pF Vref/1 C17 0.47uF 36.5K Vref/1 VCCP 12 C71 4 R23-2 VREF 1 1 3 3 C16 0.47uF Q3 2N2222 13 1M R23-1 VCCP R3 1M 1% 2 C11 C12 33n CM6502T/THH 3 R24 R17 150K U1 R25 10K 3 2M Vref/1 2 47 D7 HFA08TB60 (8A/600V) R1 1M 1% R15 2 R26 D6 1N5406 (3A/600V) L4 CS-270026 R6 2.2M R9 NC 8 PGIB/1 C77 4700P C18 470pF Standby 3 Q8 2N2222 1 R95 4.7KΩ C29 47uF/25V 2 R44 4.7KΩ R43 1 1W(S) R45 3M ZD1 P6KE150A + C30 NC 5% 11.5TS 6 L1 DR6*8.3 1 8 85TS 8TS 4 5 D13 SF14 C34 100uF/35V C33 1000pF/50V 11TS D14 SB10100 3 GND BP GND EN C31 + 12VSB 2A ZD3 NC C35 10uF/25V + 2 C32 1200UF/16V 3 R49 D15 1N4007 100 (1A/1000V) 3 VDD 1 4 U2 TNY277P R54 30 C37 0.1UF/50V C38 10uF/50V ZD5 HZ15-2 C36 NC PC3A 817C 14.50~15.10V R52 1K + R55 10K 1% R56 150 222M/250V Y1 D10 NC ON/OFF 3 VCC R50 7.5K R93 22 VCCP 3 PC2B LTV817 1 Q9 2N2222 1 2 12VSB R58 C40 0.1UF/25V 10K C41 NC 2 +12V CN2 CON2 1 C68 2012/05/09 Rev2.0 + 2 . R48 15K 1 8 GND 4 +12VSB1 H26 2 7 D 3 6 GND R47 20 1 2 5 ON/OFF PC2A LTV817 7 2 + C75 0.47uF 8TS D12 BYV-26E + +12V R96 47KΩ T3 EE-19 1.4mH R46 1M VCC ZD2 ZMM(15V) 1 C76 100uF/400V ZD9 ZMM(11V) Q27 2N7002 + C28 100uF/25V 470UF/25V 380VDC 12VS D11 EFM103 (1A/150V) IC1 KA431AZ1 R94 5.6K Champion Microelectronic Corporation ZD4 1N4745A R59 2.54K 1% 15.2~16.8V Page 12 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs DC-DC 380VDC D16 1N4148 C42 NC 12VSYNDRVL R62 47KΩ T4 2 Q13 IR F2804PBF L3 130nH/20A 82nF/800V 2TS 27TS C45 12VSYNDRVH 9 1 R63 10Ω 2TS Q15 IR F2804PBF C52 NC R65 47KΩ C49 0.1uF R64 47KΩ 11 7 2TS C54 R98 + C53 0.1uF 10KΩ 680uF/25V D18 EFM204 12 (2A/200V) + C47 C46 + 2200uF/25V C48 + C50 0.1uF C51 0.1uF OUT JP11 NC R91 0 IPLIMIT -12V IPLIMIT R66 5.6 D19 BAV99 + -12V H40 1 DRVL 10 Q14 FCP11N60 2 10 +12V 1 5 D17 1N4148 HS6 HS +12VIS 8 2200uF/16V 9 DRVHGND PQ3230 L2 C43 160uh/PQ512 6 2 Lp(1.7mH) 1 R61 47KΩ 3300uF/16V Q12 FCP11N60 R60 10Ω 470uF/16V DRVH C55 105pF C56 1uF/50V R67 470 D20 BAV99 12VS SLS Controller SD +12V 12VS R40 5.1K 4 12VS 1 Vref/1 Q18 D22 SCS140P 2N7002 Q16 2N2222 C58 1uF/50V 3 2 PC1A 817B PGB REMOTEOFF/FPOB R41 20K C57 47uF/25V ZD5 1N4148 + 5 R102 100K PGB From CM6502T & CM6502THH PGI +12V Q17 2N2907 6 R101 8.2K 3 C79 1nF C59 333 C27 334 2 8 R73 316K 1% R74 750 2 3 VREF R84 220K 4 R75 36.5KΩ 5 6 R77 220KΩ C63 1uF/16V R85 6KΩ R80 R deao1 33KΩ 1M R deao2 3M 7 SD 8 R88 1KΩ C64 47pF IPLIMIT R87 27KΩ Rset VREF VFB VCC FEAO PRIDRV D_IN- PRIDRVB D_IN+ SRDRV DEAO SRDRVB CSS GND Ilim RT/CT C65 1uF/25V 16 15 Q21 2N2907 12VS U3 CM6901 Family 1 C62 NC VREF 12VS Q22 2N2222 14 R76 22Ω 13 12 12VSYNDRVH 11 10 9 R79 56KΩ 12VS Q23 2N2907 VREF C66 1000pF C67 0.1uF/25V D26 SCS140P 12VS Q24 2N2222 R89 22Ω 12VSYNDRVL Q25 2N2907 2012/05/09 Rev2.0 7 Q20 2N2222 R72 12K C60 102pF DRVH DRVHGND 12VS R42 1.8K R78 3.3K T5 EE-19 Champion Microelectronic Corporation D27 SCS140P Page 13 DRVL CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs PACKAGE DIMENSION 16-PIN PDIP (P16) PIN 1 ID θ θ 16-PIN SOP (S16) θ θ 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 14 CM6901 SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs IMPORTANT NOTICE Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the customer should provide adequate design and operating safeguards. CMC assumes to no liability to customer product design or application support. CMC warrants the performance of its products to the specifications applicable at the time of sale. HsinChu Headquarter Sales & Marketing 5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan 21F., No. 96, Sec. 1, Sintai 5th Rd., Sijhih City, Taipei County 22102, Taiwan, R.O.C. T E L : +886-2-2696 3558 F A X : +886-2-2696 3559 T E L : +886-3-5679979 F A X : +886-3-5679909 2012/05/09 Rev2.0 Champion Microelectronic Corporation Page 15