MP44014GS-Z

MP44014 Boundary Mode PFC Controller The Future of Analog IC Technology FEATURES DESCRIPTION  The MP44014 is a boundary conduction mode PFC controller that provides simple, highperformance, active power factor correction using minimal external components.   The output voltage is regulated accurately by a high-performance voltage mode amplifier with an accurate internal voltage reference.   The precise, adjustable output over-voltage protection greatly enhances system reliability.     The on-chip R/C filter on the current sense pin can potentially eliminate the external R/C filter. The extremely low start-up current, quiescent current, and disable function reduces power consumption, resulting in excellent efficiency performance. Boundary Conduction Mode PFC Controller for Pre-Regulator Zero-Crossing Compensation to Minimum THD of the AC Input Current Precise Adjustable Output Over-Voltage Protection Ultra-Low (15μA) Start-U p Current Low Quiescent Current (0.46uA) at OVP Condition On-Chip Filter on Current Sense Pin Disable Function on ZCS Pin -750mA/+800mA Peak Gate Drive Current Available in SOIC-8 Packages APPLICATIONS     The MP44014 is available in a SOIC-8 package. Offline Adaptors Electronic Ballast LLC Front End Other PFC Pre-Regulators All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. Other patents pending. TYPICAL APPLICATION L1 R3 D2 R10 C2 R4 D1 D3 R1 C4 R6 R5 C6 U1 ZCS VCC C1 MULT COMP C5 Q1 FB M44014 GATE GND CS R7 C8 R11 R8 R2 C3 C7 R9 MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 1 MP44014 – BOUNDARY MODE PFC CONTROLLER ORDERING INFORMATION Part Number Package SOIC-8 MP44014GS* Top Marking See Below * For Tape & Reel, add suffix –Z (e.g. MP44014GS–Z) TOP MARKING MP44014: Part number LLLLLLLL: Lot number MPS: MPS prefix Y: Year code WW: Week code PACKAGE REFERENCE 1 FB VCC 8 2 COMP GATE 7 3 MULT GND 6 4 CS ZCS 5 ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance Supply voltage (VCC) .............. -0.5V to self limit Analog inputs and outputs (2)..........-0.3V to 6.5V ZCS max. current......................-2.5mA to 10mA Continuous power dissipation (TA = +25°C) (3) SOIC-8 ....................................................... 1.4W Junction temperature………………… …..150C Lead temperature (solder) ........................260C Storage temperature ................ -55C to +150C SOIC-8 ....................................90 ...... 45 ... C/W Recommended Operating Conditions (4) Supply voltage (VCC) ....................13.4V to 22V Analog inputs and outputs .............-0.3V to 6.5V Operating junction temp. (TJ). .. -40°C to +125°C (5) θJA θJC NOTES: 1) Exceeding these ratings may damage the device. 2) Except ZCS pin, which is self limited. 3) The maximum allowable power dissipation is a function of the maximum junction temperature TJ(MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by Exceeding the maximum D(MAX)=(TJ(MAX)-TA)/θJA. allowable power dissipation will produce an excessive die temperature, causing the regulator to go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 4) The device is not guaranteed to function outside of its operating conditions. 5) Measured on JESD51-7, 4-layer PCB. MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 2 MP44014 – BOUNDARY MODE PFC CONTROLLER ELECTRICAL CHARACTERISTICS VCC = 15V, CGATE = 1nF, TJ = -40C~+125C, unless otherwise noted. Parameter Supply Voltage Operating range Turn-on threshold Turn-off threshold Hysteresis Zener voltage Supply Current Start-up current Quiescent current Symbol Operating current Icc Quiescent current Iq Multiplier Input bias current Linear operation range Output max. slope Gain(6) VCC VCC_on VCC_off VCC_hys Vz Istartup Iq Condition Min After turn on 10.7 11 8.7 2.1 22 IIN = 20mA VCC = 11V No switch Fs = 70kHz, CLOAD = 1nF During OVP (either static or dynamic) or VFB ≤ 150mV IMULT VMULT ΔVCS/ΔVMULT K Typ Max Units 25 21 13.8 10.8 3 29 V V V V V 15 2.5 30 3.2 µA mA 3.5 4.5 mA 0.46 0.7 mA -1 3 µA V 12.3 9.8 0 VMULT = 0~0.6V VCOMP = upper clamp VMULT = 1V, VCOMP = 4V, TJ = 25oC 1.60 1.90 V/V 0.5 0.6 0.7 1/V 2.465 2.5 2.535 V 2 5 mV 1 µA -6.9 mA Error Amplifier Feedback voltage Feedback voltage line regulation Feedback bias current Source current VFB VFB_LR IFB ICOMP_source TJ = 25 oC VCC = 10.7V to 22V VFB = 2.6V VCOMP = 4V, VFB = 2.4V, TJ = 25oC VCOMP = 4V, VFB = 2.6V, TJ = 25oC -2.7 -4.7 3 5 Sink current ICOMP_sink Upper clamp voltage VCOMP_H VFB = 2V, Icomp = -0.5mA 5.5 6.1 6.5 V Lower clamp voltage VCOMP_L VFB = 2V, Icomp = -0.5mA 2.0 2.15 2.3 V -1 95 1.83 µA ns ns V mV mV 8.6 V Current Sense Comparator Input bias current Turn-off delay LEB time Current sense clamp voltage VCS_Clamp Current sense offset VCS_Offset VMULT = 0V VMULT = 2.5V VZCSclamp_H IZCS = 2.5mA Zero Current Sensor Upper clamp voltage ICS TDT TLEB CS = 0 MULT = 0.2V MULT = 0.2V 45 1.6 7.1 190 70 1.72 26 8 7.8 mA MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 3 MP44014 – BOUNDARY MODE PFC CONTROLLER ELECTRICAL CHARACTERISTICS (continued) VCC = 15V, CGATE = 1nF, TJ = -40C~+125C, unless otherwise noted. Parameter Lower clamp voltage Zero current sensing threshold ZCS_DISABLE threshold ZCS_EN threshold Source current capability Restart current after disable Re-Starter Re-start time Over Voltage Dynamic OVP current Hysteresis Static OVP threshold Gate Driver Dropout voltage Symbol Condition VZCSclamp_L IZCS = -2.5mA VZCS_H VZCS rising VZCS_L VZCS falling VZCS_DISABLE_ VZCS_EN IZCS_source IZCS_res Min Typ Max Units 0.2 0.5 2.1 1.56 185 320 0.7 2.21 1.66 230 380 V V V mV mV mA µA 1.45 140 260 -1.8 55 85 Tstart 80 175 280 µs IOVP 35 45 IOVP_Hys VOVP 2.15 40 30 2.25 µA µA V VOH VOL Tf Tr VD_max Voltage fall time Voltage rise time Max. output drive voltage Source current capability Sink current capability IGate_source IGate_sink UVLO saturation voltage VSaturation IGDsource = 20mA IGDsource = 200mA IGDsink = 200mA 12 2.4 3.9 0.9 30 40 13.5 -750 800 VCC = 0 to VCC_ON, IGate_sink = 10mA 2.35 3.1 5.0 1.9 70 80 15.5 V V V ns ns V mA mA 0.3 V NOTES: 6) The multiplier output is given by: Vcs = K·VMUTL·(VCOMP-2.5). 7) Guaranteed by design. MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 4 MP44014 – BOUNDARY MODE PFC CONTROLLER TYPICAL PERFORMANCE CHARACTERISTICS 10 100 14 OPERATING 13 10 NON OVP 1 1 12 11 OVP 0.1 0.01 9 START-UP 0 5 10 15 20 25 30 28 FALLING 10 0.1 0.001 RISING 0.01 -50 0 50 100 150 8 -50 2.6 250 2.55 200 2.5 150 2.45 100 0 50 100 150 0 50 100 150 0 50 100 150 26 24 22 20 -50 0 50 100 150 2.4 -50 1.8 45 1.6 0 50 100 150 UPPER CLAMP 50 -50 0.8 1.4 40 1.2 0.6 1 35 0.8 0.6 30 0.4 0.4 0.2 25 -50 0 50 100 150 0 0 0.5 1 1.5 2 2.5 3 3.5 4 0.2 -50 MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 5 MP44014 – BOUNDARY MODE PFC CONTROLLER TYPICAL PERFORMANCE CHARACTERISTICS (continued) 3.5 8 10 3 8 2.5 6 6 2 1.5 4 4 1 2 0 -50 0.5 0 50 100 150 2 0 100 200 300 400 500 0 0 100 200 MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 300 400 500 6 MP44014 – BOUNDARY MODE PFC CONTROLLER TYPICAL PERFORMANCE CHARACTERISTICS (continued) VOUT AC Coupled 5V/div. VOUT AC Coupled 5V/div. VREC 100V/div. VREC 100V/div. VREC 100V/div. IL 1A/div. IL 1A/div. IL 1A/div. VOUT AC Coupled 5V/div. IL 1A/div. VOUT 100V/div. VOUT 100V/div. VREC 100V/div. VREC 100V/div. IL 2A/div. IL 2A/div. VZCS 5V/div. VGATE 20V/div. 35 30 VREC 20V/div. 25 20 VGATE 20V/div. 15 10 IL 500mA/div. 5 0 3 7 11 15 19 23 27 31 35 39 MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 7 MP44014 – BOUNDARY MODE PFC CONTROLLER PIN FUNCTIONS Pin # 1 Name FB 2 COMP 3 MULT 4 CS 5 ZCS 6 GND 7 GATE 8 VCC Description Feedback. The output voltage is fed into FB through a resistor divider. Output of the error amplifier. A compensation network is connected between COMP and FB. Input of the multiplier. Connect MULT to the rectified main voltage via a resistor divider to provide the sinusoidal reference for the current control loop. Current sense. The current through the MOSFET is fed into CS via a resistor. The resulting voltage on CS is compared with the output of the internal multiplier to get an internal sinusoidal-shaped reference to determine the MOSFET’s turn-off. The on-chip R/C filter can reduce high frequency noise on CS. Also, suggest to add a RC filter on the CS pin in case of switching noise is too large. Inductor’s zero-crossing current sensing input. A negative transition edge triggers the MOSFET’s turn-on. Suggest to connect a 22pF cap from this ZCS to GND to tune ZVS point. Ground. Gate driver output. The high output current of the gate driver is able to drive a low-cost power MOSFET. The high-level voltage of GATE is clamped to 12V in case GATE is supplied with a high VCC. Supply voltage for both the signal path of the IC and the gate driver. A bypass capacitor from VCC to ground is needed to reduce noise. MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 8 MP44014 – BOUNDARY MODE PFC CONTROLLER FUNCTIONAL BLOCK DIAGRAM Figure 1: Functional Block Diagram MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 9 MP44014 – BOUNDARY MODE PFC CONTROLLER OPERATION The MP44014 is a boundary conduction mode PFC controller optimized for the PFC preregulator up to 300W and fully complies with IEC1000-3-2 specification. Output Voltage Regulation The output voltage is sensed at FB through a resistor divider from the output voltage to ground. The accurate on-chip reference voltage and the high performance error amplifier regulate the output voltage accurately. When the load is very light, the output voltage tends to stay steadily above the nominal value. In this condition, the error amplifier output will saturate low. When the error amplifier output is lower than 2.25V, static OVP will be triggered. Consequently, the gate driver will be blocked to turn off the external power MOSFET, and the device will enter an idle state. Normal operation resumes once the error amplifier output returns to the regulated region (see Figure 2). Over-Voltage Protection (OVP) The MP44014 offers two stages of over-voltage protection: dynamic over-voltage protection and static over-voltage protection. With two-stage protection, the circuit operates reliably. The MP44014 achieves OVP by monitoring the current flow through COMP. During steady-state operation, the current flow through the high-side feedback resistor (R9) and the low-side feedback resistor (R10) is calculated with Equation (1): IR9 V  VFB V  O  IR10  FB R9 R10 (1) If there is an abrupt rise on the output (ΔVO) and the compensation network connected between FB and COMP takes time to achieve high power factor (PF) due to the long RC time constant, the voltage on FB will still be kept at the reference value. The current through R10 remains equal to VFB/R10. However, the current through R9 is calculated with Equation (2): ' IR9  VO  VO  VFB R9 Figure 2: OVP Detector Block Disable Function The MP44014 can be disabled by pulling the zero-current sensing (ZCS) pin lower than 190mV. This helps to further reduce quiescent current when the PFC pre-regulator needs to be shut down. After releasing ZCS, it will stay at a lower clamp voltage when there is no external voltage from the auxiliary winding (see Figure 3). (2) This current has to flow into COMP. Simultaneously, this current is monitored inside the chip. If the current rises to 35µA, the output voltage of the multiplier will be forced to decrease, and the energy delivered to the output will be reduced. If this current continues to rise to about 40µA, the dynamic OVP can be triggered. Consequently, the gate driver is blocked to turn off the external power MOSFET, and the device enters an idle state. This state is maintained until the current falls below 10µA, the point at which the internal starter will be re-enabled and allow the switching to restart. Figure 3: ZCS Triggering and Disable Block MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 10 MP44014 – BOUNDARY MODE PFC CONTROLLER Boundary Conduction Mode When the current of the boost inductor reaches zero, the voltage on the inductor is reversed. ZCS then generates the turn-on signal of the MOSFET by sensing the falling edge of the voltage on the auxiliary winding coupled with the inductor. If the ZCS voltage rises above 2.1V, the comparator waits until the voltage falls below 1.6V. Once the voltage falls below 1.6V, the MP44014 turns on the MOSFET. The 7.8V high clamp and 0.55V low clamp protect ZCS. The internal 175µs timer generates a signal to turn on the MOSFET if the driver signal has been low for more than 175µs. This also allows the MOSFET to turn on during the start-up period since no signal is generated from ZCD during start-up. Zero-Crossing Compensation The MP44014 offers 30mV voltage offset for the multiplier output near the zero crossing of the line voltage (which can force the circuit to process more energy at the bottom of the line voltage). With this function, the THD of the current is reduced. To prevent redundant energy, this offset is reduced as the instantaneous line voltage increases. Therefore the offset will be negligible near the top of the line voltage. Power Factor Correction The MP44014 senses the inductor current through the current sense pin and compares it to the sinusoidal-shaped signal, which is generated from the output of the multiplier. When the external power MOSFET turns on, the inductor current rises linearly. When the peak current hits the sinusoidal-shaped signal, the external power MOSFET begins to turn off, and the diode turns on. Also, the inductor current begins to fall. When the inductor current reaches zero, the power MOSFET begins to turn on again, which causes the inductor current to start rising again. The power circuit works in boundary conduction mode, and the envelope of the inductor current is sinusoidal shaped. The average input current is half of the peak current, so the average input current is also sinusoidal shaped. A high power factor can be achieved through this control method (see Figure 4). Multiplier output Inductor current Input average current Figure 4: Inductor Current Waveform The control flow chart of the MP44014 is shown in Figure 5. Figure 5: Control Flow Chart MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 11 MP44014 – BOUNDARY MODE PFC CONTROLLER PACKAGE INFORMATION SOIC-8 0.189(4.80) 0.197(5.00) 8 0.050(1.27) 0.024(0.61) 5 0.063(1.60) 0.150(3.80) 0.157(4.00) PIN 1 ID 1 0.228(5.80) 0.244(6.20) 0.213(5.40) 4 TOP VIEW RECOMMENDED LAND PATTERN 0.053(1.35) 0.069(1.75) SEATING PLANE 0.004(0.10) 0.010(0.25) 0.013(0.33) 0.020(0.51) 0.0075(0.19) 0.0098(0.25) SEE DETAIL "A" 0.050(1.27) BSC SIDE VIEW FRONT VIEW 0.010(0.25) x 45o 0.020(0.50) GAUGE PLANE 0.010(0.25) BSC 0o-8o 0.016(0.41) 0.050(1.27) DETAIL "A" NOTE: 1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS IN MILLIMETERS. 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.004" INCHES MAX. 5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AA. 6) DRAWING IS NOT TO SCALE. NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP44014 Rev. 1.01 www.MonolithicPower.com 11/10/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 12