MP9989GV-Z

MP9989 CCM/DCM Flyback Ideal Diode with Integrated 100V/10mΩ MOSFET and No Need for Auxiliary Winding DESCRIPTION FEATURES The MP9989 is a fast turn-off, intelligent rectifier for flyback converters that integrates a 100V MOSFET. It can replace a diode rectifier for higher efficiency and power density. The chip regulates the forward voltage drop of the internal power switch to 40mV(1) and turns off before the drain-source voltage reverses.        The MP9989 can generate its own supply voltage without the need for auxiliary winding, which makes it suitable for charger applications with a low output voltage requirement or any other adaptor applications with high-side set-up. The internal ringing detection circuitry prevents the MP9989 from falsely turning on during discontinuous conduction mode (DCM) or quasiresonant operations.  Integrated 100V/10mΩ MOSFET Wide Output Range down to 0V No Need for Auxiliary Winding for High-Side or Low-Side Rectification Ringing Detection Prevents False Turn-On during DCM Operations Compatible with Energy Star 110µA Quiescent Current Supports DCM, CCM, and Quasi-Resonant Operations Available in SOIC-8 and QFN4x5-8 Packages APPLICATIONS    The MP9989 is available in SOIC-8 and QFN4x5-8 packages. Laptop Adapters QC and USB PD Charger High-Efficiency Flyback Converters 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”, the MPS logo, and “Simple, Easy Solutions” are registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries. Note: 1) Related issued patent: US Patent US8, 067,973; US8,400,790. CN Patent ZL201010504140.4. Other patents pending. TYPICAL APPLICATION VDD SENSE VS VD MP9989 MP9989 Rev. 1.1 8/27/2020 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 1 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER ORDERING INFORMATION Part Number MP9989GS* MP9989GV** Package SOIC-8 QFN4x5-8 Top Marking See Below See Below MSL Rating 2 2 * For Tape & Reel, add suffix –Z (e.g. MP9989GS–Z). ** For Tape & Reel, add suffix –Z (e.g. MP9989GV–Z). TOP MARKING (MP9989GS) MP9989: Part number LLLLLLLL: Lot number MPS: MPS prefix Y: Year code WW: Week code TOP MARKING (MP9989GV) MPS: MPS prefix Y: Year code WW: Week code MP9989: Part number LLLLLL: Lot number MP9989 Rev. 1.1 8/27/2020 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 2 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER PACKAGE REFERENCE MP9989 Rev. 1.1 8/27/2020 TOP VIEW TOP VIEW SOIC-8 QFN4x5-8 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 3 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER PIN FUNCTIONS Pin # SOIC-8 Pin # QFN4x5-8 Name 1 1 VDD 2 2 SENSE 3, 4 5, 6, 7, 8 3, 4 5, 6, 7, 8 VS VD Description Linear regulator output. VDD is the supply of the MP9989. MOSFET drain voltage sensing. SENSE is also used as the linear regulator input. MOSFET source. VS is also used as a reference for VDD. MOSFET drain. θJA θJC ABSOLUTE MAXIMUM RATINGS (2) Thermal Resistance (6) VDD to VS ................................... -0.3V to +14V VD to VS .................................... -1.5V to +100V SENSE to VS ................................ -1V to +180V Continuous drain current (TC = 25°C) SOIC-8 .....................................................14.9A QFN4x5-8 .................................................28.1A Continuous drain current (TC = 100°C) SOIC-8 .....................................................9.42A QFN4x5-8 .................................................17.8A Pulsed drain current (3) SOIC-8 ........................................................50A QFN4x5-8 ....................................................94A Maximum power dissipation (4) SOIC-8 ......................................................1.7W QFN4x5-8 ................................................ 3.1W Junction temperature ............................... 150°C Lead temperature (solder) ....................... 260°C Storage temperature ............... -55°C to +150°C SOIC-8 ................................... 70 ...... 32 ... C/W QFN4x5-8 .............................. 40 ....... 9 .... C/W Notes: 2) 3) 4) 5) 6) Exceeding these ratings may damage the device. Repetitive rating: Pulse width = 100µs, duty cycle limited by maximum junction temperature. TA = +25°C. The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-to-ambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by P D (MAX) = (TJ (MAX) - TA) / θJA. Exceeding the maximum allowable power dissipation produces an excessive die temperature, causing the regulator to go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. The device is not guaranteed to function outside of its operating conditions. Measured on JESD51-7, 4-layer PCB. ESD Rating Human-body model (HBM) .................... ±1200V Charged device model (CDM) ................ ±2000V Recommended Operation Conditions (5) VDD to VS ...................................... 4.5V to 13V Operating junction temp (TJ) .... -40°C to +125°C MP9989 Rev. 1.1 8/27/2020 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 4 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER ELECTRICAL CHARACTERISTICS VDD = 6.7V, TJ = -40 to about +125°C, unless otherwise noted. Parameter Drain-source breakdown voltage VDD UVLO rising VDD UVLO hysteresis VDD maximum charging current Operating current Quiescent current Control Circuitry Section Forward regulation voltage (VS-VD) (7) Symbol Conditions Min V(BR)DSS TJ = 25°C 100 4.0 0.1 Max Units V 4.2 0.24 4.4 0.38 V V IVDD VDD = 5.5V, SENSE = 30V 63 ICC fSW = 100kHz VDD = 7V 4 110 6 135 mA µA 25 40 55 mV -115 -80 -57 mV -6 3 12 mV 0.8 20 25 1.2 1.55 ns ns µs 3 V IQ(VDD) VFWD Turn-on threshold (VDS) Turn-off threshold (VS-VD) (7) Turn-on delay (8) tD-ON (7) Turn-off delay tD-OFF Turn-on blanking time tB-ON Turn-off blanking threshold VB-OFF (VDS) Turn-off threshold during minimum on time (VDS) Turn-on slew rate detection time (8) Power Switch Section Single pulse avalanche EAS energy (9) Drain-source on state RDS(ON) resistance Input capacitance CISS Output capacitance COSS Reverse transfer capacitance CRSS Source-Drain Diode Characteristics Source-drain diode forward voltage Reverse recovery time Diode reverse change Typ CLOAD = 2.2nF 2 mA 1.8 V 30 ns VDD = 50V, VGS = 10V, L = 1.0mH, TJ = 25°C 20 mJ ID = 2A,TJ = 25°C 10 VDS = 40V, VGS = 0V, f = 1MHz VSD IS = 8A, VGS = 0V tRR QRR IF = 10A, dl/dt = 100A/μs 12.5 3850 614 40 0.8 78.8 105.6 mΩ pF pF pF 1.2 V ns nC Notes: 7) Guaranteed by characterization. 8) Guaranteed by design. 9) EAS is tested at starting TJ = 25°C, L = 1mH, IAS = 6.4A, VDD = 50V, VGS = 10V MP9989 Rev. 1.1 8/27/2020 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 5 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER TYPICAL CHARACTERISTICS VDD = 6.7V, unless otherwise noted. VD-VS Breakdown Voltage vs. Temperature VDD Rising vs. Temperature 4.4 4.35 120 VDD_RISING (V) BREAKDOWN VOLTAGE (V) 125 115 110 105 4.3 4.25 4.2 4.15 4.1 4.05 100 4 -50 0 50 100 TEMPERATURE (℃) 150 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (℃) VDD Maximum Charging Current vs. Temperature Operation Current vs. Temperature 4.2 100 4.15 90 4.1 80 4.05 IVDD (mA) OPERATION CURRENT (mA) VDD = 5.5V, SENSE = 30V 4 3.95 70 60 3.9 50 3.85 40 3.8 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (℃) 30 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (℃) RDS(ON) vs. Temperature 1.8 RDS(ON) , (NORMALIZED) DRAIN-SOURCE ON RESISTANCE 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 -70 MP9989 Rev. 1.1 8/27/2020 -20 30 80 130 TJ, JUNCTION TEMPERATURE (℃) www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 6 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER TYPICAL PERFORMANCE CHARACTERISTICS Operation in 48W Flyback Application Operation in 48W Flyback Application VIN = 90VAC, IOUT = 4.0A VIN = 265VAC, IOUT = 4.0A CH1: VDS 20V/div. CH1: VDS 20V/div. CH4: IDS 5A/div. CH4: IDS 5A/div. 10μs/div. MP9989 Rev. 1.1 8/27/2020 10μs/div. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 7 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER FUNCTIONAL BLOCK DIAGRAM Figure 1: Functional Block Diagram MP9989 Rev. 1.1 8/27/2020 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 8 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER OPERATION The MP9989 supports operation in discontinuous conduction mode (DCM), continuous conduction mode (CCM), and quasiresonant flyback converters. The control circuitry controls the gate in forward mode and turns the gate off when the synchronous rectification (SR) MOSFET current drops to zero. VDD Generation SENSE is the input for the linear regulator, the output of which is VDD. VDD supplies the MP9989, and is regulated at 6.7V. When SENSE is under 4.7V, a 40mA current source from SENSE charges up VDD. When SENSE is above 4.7V, the linear regulator’s maximum charging current is limited at IVDD to charge the external capacitor at VDD. Start-Up and Under-Voltage Lockout (UVLO) When VDD rises above 4.2V, the MP9989 exits under-voltage lockout (UVLO) and is enabled. Once VDD drops below 4.0V, the MP9989 enters sleep mode and VGS is kept low. Turn-On Phase When VDS drops to ~2V, a turn-on timer begins. If VDS reaches the -80mV turn-on threshold from 2V within the slew rate detection time (~30ns), the MOSFET is turned on after a turn-on delay tD-ON (~20ns) (see Figure 2). If VDS crosses 80mV after the timer ends, the gate voltage remains off. This turn-on timer prevents the MP9989 from falsely turning on due to ringing from DCM and quasi-resonant operations. Turn-On Blanking The control circuitry contains a blanking function. When the MOSFET turns on, the control circuit ensures that the on state lasts for a specific period of time. The turn-on blanking time is tB-ON (~1.2µs) to prevent an accidental turn off due to ringing. However, if VDS reaches 1.8V within the turn-on blanking time, VGS is pulled low immediately. voltage level to enlarge the on resistance of the synchronous MOSFET. VDS 2V -3mV -40mV -80mV Driver Begins to be Pulled Down VGS Driver Turn Off 2V Turn-On Delay Turn-On Blanking Turn-Off Turn-Off Delay Blanking Figure 2: Turn-On/Turn-Off Timing Diagram With this control scheme, VDS is adjusted to be around VFWD even when the current through the MOSFET is fairly low. This function keeps the driver voltage at a very low level when the synchronous MOSFET is turned off, which boosts the turn-off speed and is especially important to CCM operation. Turn-Off Phase When VDS rises to trigger the turn-off threshold (3mV), the gate voltage is pulled to zero after a short turn-off delay of tD-OFF (about 25ns) (see Figure 2). Turn-Off Blanking After the gate driver (VGS) is pulled to zero by VDS reaching the turn-off threshold (-3mV), a turn-off blanking time is applied, during which the gate driver signal is latched off. The turn-off blanking is removed when VDS rises above VB-OFF (2V) (see Figure 2). Conduction Phase When VDS rises above the forward voltage drop, VFWD (-40mV), according to the decrease of the switching current, the MP9989 lowers the gate MP9989 Rev. 1.1 8/27/2020 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 9 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER APPLICATION INFORMATION Slew Rate Detection Function In DCM operations, the demagnetizing ringing may bring VDS below 0V. If VDS reaches the turnon threshold during the ringing, SR controllers without the slew rate detection function may turn on the MOSFET by mistake. This not only increases power loss, but may also lead to shoot-through if the primary side MOSFET is turned on within the minimum on time. Considering the slew rate of the ringing is always much less than when the primary MOSFET is completely turned off, this false turn-on situation can be prevented by the slew rate detection function. When the slew rate is less than the threshold, the IC does not turn on the gate even when VDS reaches the turn-on threshold. For more details, see the Turn-On Phase section on page 8. SENSE VDD VS VD MP9989 Figure 3: Low-Side Rectification VDD SENSE VS VD MP9989 Figure 4: High-Side Rectification External Resistor on SENSE Over-voltage conditions may lead to damage to the device, so there must be appropriate application design to guarantee safe operation, especially on the high voltage pin. Maximum Output Current The allowed temperature rise of the MP9989 limits the maximum output current the device can handle. The temperature rise is determined by its own power loss. Generally, for a universal input adapter the recommended rated output current for MP9989 is 4A. For certain designs, the power loss of the MP9989 can be calculated, so the maximum output current can be deduced. One common over-voltage condition is when the body diode of the SR MOSFET is turned on, as the forward voltage drop may exceed the negative rating on the SENSE pin. In this case, it is recommended to place an external resistor between SENSE and the MOSFET drain. In general, the resistance is recommended to be about 100Ω to 300Ω. The power loss of the MP9989 can be separated into several parts: controller consumption, integrated MOSFET conduction loss, and so on. If the MP9989 works in continuous conduction mode (CCM), reverse-recovery loss of the integrated MOSFET must also be considered. Each part of the loss can be calculated based on Equation (1), Equation (2), and Equation (3): On the other hand, this resistor also cannot be too large, because it may compromise the VDD supply and slow down the slew rate on the VDS detection. In general, it is not recommended to use a resistor greater than 300Ω, but for each use case, it should be checked based on the condition of VDD supply and the slew rate. PLOSS _ CONTROLLER  VSENSE _ P  IDD Typical System Implementations Figure 3 and Figure 4 show the typical system IC implementation in low-side rectification and highside rectification, respectively. MP9989 Rev. 1.1 8/27/2020 tS _ ON PLOSS _ SR _ CONDUCTION  fSW   (1) VSR _ SD (t)  ISR _ SD (t)dt (2) 0 PLOSS _ SR _ RR  1  VDS  IRR  tF  fSW 2 (3) Where IDD is the current of the MP9989, and VSENSE_P is the corresponding plateau voltage in the SENSE pin when SR turns off. fSW is the SR switching frequency, and tS_ON is the SR on period, VSR_SD is the voltage drop from the SR, and ISR_SD is the current flowing from the SR. IRR www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 10 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER is the peak reverse current and tF is the reverse current fall time. The total loss of the MP9989 (PLOSS) is the sum of the above losses. If a RC snubber is used, the power loss caused by this snubber must also be taken into consideration. The junction and case temperature rises can be calculated with the thermal resistance of the junction-to-ambient (θJA) and junction-to-case (θJC). The junction temperature must be within ABS (typically 150°C). Calculate ∆TJA and ∆TJC with Equation (4) and Equation (5): TJA  PLOSS  JA (4) TJC  PLOSS  JC (5) Layout Example Figure 6 and Figure 7 show the layout example for QFN4x5-8 package and SOIC-8 package in high-side application of flyback power supply, respectively. It is a single layer with a throughhole transformer. R2 and C2 are the RC snubber network for the internal MOSFET. The sensing loop (SENSE to the MOSFET drain) is optimized and kept separate from the power loop. The VDD decoupling capacitor (C1) is placed beside VDD. The thermal resistance can be reduced in one of several ways to lower the temperature: a thicker copper layer attached to VD and VS, additional vias for thermal dissipation, or heatsinks. The real maximum output current can be set combining the real tested data. PCB Layout Guidelines Efficient PCB layout is critical for stable operation. For best results, refer to Figure 5, Figure 6, Figure 7, and follow the guidelines below. 1. Connect SENSE pin to different position for an adjustable turn-off point of time during the fast transients in CCM. In general, the farther the junction point is from the VD, the earlier the SR turns off. (See Figure 5). Figure 6: Layout Example for QFN4x5-8 package in Flyback High-Side Application 2. Keep the IC out of the power loop to prevent the sensing loop and power loop from interrupting each other. Decoupling Capacitor VS VDD Sense Position VD SENSE Figure 5: Voltage Sensing for VD/SENSE 3. Place a decoupling ceramic capacitor from VDD to VS close to the IC for adequate filtering. MP9989 Rev. 1.1 8/27/2020 Figure 7: Layout Example for SOIC-8 package in Flyback High-Side Application www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 11 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER 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) 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 DETAIL "A" MP9989 Rev. 1.1 8/27/2020 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. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 12 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER PACKAGE INFORMATION QFN4X5-8 PIN 1 ID MARKING PIN 1 ID INDEX AREA BOTTOM VIEW TOP VIEW SIDE VIEW NOTE: 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH. 3) LEAD COPLANARITY SHALL BE 0.08 MILLIMETERS MAX. 4) DRAWING REFERENCE TO JEDEC MO-220 5) DRAWING IS NOT TO SCALE. RECOMMENDED LAND PATTERN MP9989 Rev. 1.1 8/27/2020 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 13 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER CARRIER INFORMATION SOIC-8 Pin1 1 1 1 1 ABCD ABCD ABCD ABCD Feed Direction Part Number Package Description Quantity/Reel Quantity/ Tube Quantity/ Tray Reel Diameter MP9989GS-Z SOIC-8 2500 100 N/A 13in Carrier Tape Width 12mm Carrier Tape Pitch 8mm QFN4X5-8 Pin1 1 1 ABCD 1 1 ABCD ABCD ABCD Feed Direction Part Number Package Description Quantity/Reel Quantity/ Tube Quantity/ Tray Reel Diameter MP9989GV-Z QFN4x5-8 5000 N/A N/A 13in MP9989 Rev. 1.1 8/27/2020 Carrier Tape Width 12mm www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. Carrier Tape Pitch 8mm 14 MP9989 – FAST TURN-OFF INTELLIGENT RECTIFIER Revision History Revision # 1.1 1.1 MP9989 Rev. 1.1 8/27/2020 Revision Date 8/272020 8/272020 Description Update ABS. Add sections for PCB layout. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. Pages Updated 3 11 15