MP3361 300V, 1A Peak, Integrated Photo Flash Charger and IGBT Driver The Future of Analog IC Technology DESCRIPTION FEATURES The MP3361 is a fast, highly efficient and precision high voltage Xenon photo-flash charger for Digital Still Cameras (DSC). • • • • • The MP3361 features a 1A peak current and charges to 300V in 4 seconds from 4.2V battery voltage. A 60V, 0.5Ω internal power switch lowers transformer turns ratio and switching losses associated with the primary leakage inductance and winding capacitance. Integrated secondary feedback resistors provide +/-3% output voltage charge accuracy. Integrated 60V, 0.5Ω Power Switch 1A Peak Charge Current 3.5% Charge Accuracy <1uA Shutdown Current Integrated IGBT Driver APPLICATIONS • • • Digital Still Cameras Optical Film Cameras PDAs with Xenon Flash “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 1 VIN 6 R1 10 U1 6 VIN 9 N/C CHG RDYB 8 IGBTIN 4 1 SW 2 FB 10 T1 4 D1 BAV23S 3 + MP3361 CHG RDYB T2 1 IGBTOUT 3 N/C 5 IGBTIN GND R2 499K 1206 Xenon Flash 2 7 Q1 FGR15N40A 4 Q2 MP3361 Rev. 0.9 4/13/2010 3 600V/1A 5, 6, 7, 8 1, 2, 3 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. R3 1M 1206 1 MP3361 – 300V, 1A PEAK INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER ORDERING INFORMATION Part Number* MP3361 Package 3x3mm MSOP10 Top Marking Free Air Temperature (TA) 3361D –40°C to +85°C *For Tape & Reel, add suffix –Z, (e.g. MP3361DK–Z); For RoHS Compliant Packaging, add suffix –LF, (e.g. MP3361DK–LF–Z) PACKAGE REFERENCE TOP VIEW RDYB 1 10 FB SW 2 9 N/C IGBTOUT 3 8 CHG IGBTIN 4 7 GND N/C 5 6 VIN ABSOLUTE MAXIMUM RATINGS (1) VIN to GND .........................................-0.3Vto 6V CHG, IGBTIN, IGBTOUT, RDYB to GND ...................................-0.3Vto 6V FB to GND .....................................-60V to 350V SW to GND .....................................-0.3V to 60V Storage Temperature…………..-55°C to +150°C (2) Continuous Power Dissipation (TA = +25°C) ............................................................ 2.5W Junction Temperature ............................ +150°C Lead Temperature (Solder)………………+260°C Recommended Operating Conditions (3) Thermal Resistance (4) θJA θJC 3x3mm MSOP10....................150 ..... 65 ... °C/W Notes: 1) Exceeding these ratings may damage the device. 2) 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 PD (MAX) = (TJ (MAX)-TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7 4-layer board. Supply Voltage VIN .............................2.5V to 6V Operating Junt. Temp. (TJ) ..... –40°C to +125°C MP3361 Rev. 0.9 4/13/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 2 MP3361 – 300V, 1A PEAK INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER ELECTRICAL CHARACTERISTICS VIN = V (Charge) = 3.6V, TA = +25°C, unless otherwise noted. Parameter Photoflash Capacitor Charger VIN Voltage Range VIN UVLO VIN Quiescent Current (active) VIN Quiescent Current (standby) Shutdown Current from VIN VSW Leakage Current SW ON Resistance between SW and GND Pull-down Resistance of CHARGE pin IPEAK Charge completion detect voltage at FB FB Resistance DCM Comparator threshold RDYB Leakage Current RDYB Output Low Voltage MAX TON Thermal Shutdown Charge Input High Voltage Charge Input Low Voltage IGBTOUT pull-up ON resistance IGBTOUT pull-down ON resistance IGBTIN Input High Voltage IGBTIN Input Low Voltage Propagation delay IGBT Pulse Width IGBTOUT rise time IGBTOUT fall time Pull down resistance of IGBTIN MP3361 Rev. 0.9 4/13/2010 Conditions Min Typ 2.5 Rising edge, hysteresis = 200mV typical V(CHARGE)=High, V(FB) = 0 V(CHARGE)=High, V(FB) = 336V V(CHARGE)=Low, VIN =3.6V VIN=3.6V, VSW=60V, in Shutdown 1 Switch turn-on V(CHARGE)=3.6V 285 V(FB)=30V Max Unit 6 V 2.5 V 2 100 1 1 mA µA µA µA 0.5 Ω 100k Ω 1.0 1.2 A 295 305 V 285 5 V(RDYB)=3.6V ISINK= 2mA Maximum TON time Rising edge, hysteresis = 15°C 1 0.2 70 150 1.4 0.5 5 6 1.4 0.5 Cgate=6800pF 50 1 Cgate=6800pF Cgate=6800pF 130 180 100k www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. kΩ V µA V µs °C V V Ω Ω V V ns µs ns ns Ω 3 MP3361 – 300V, 1A PEAK INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER PIN FUNCTIONS Pin 1 2 3 4 5,9 Name RDYB SW IGBTOUT IGBTIN N/C 6 VIN 7 8 10 GND CHG FB MP3361 Rev. 0.9 4/13/2010 Function Open-Drain Power-Ready Output. RDYB becomes low when the output voltage is reached. Switch Pin. This is the drain of the internal power switch. Output Drive for IGBT Gate. Connect this pin to the gate of the IGBT. Logic Input for IGBT Drive. Input Supply Pin. Connect it to system supply voltage. Bypass VIN to GND with a 0.1uF or greater ceramic capacitor. Ground A Logic LOW disables the part. Logic Hi Enables the part Freeback Pin. Its trip voltage is 295V typical. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 4 MP3361 – 300V, 1A PEAK INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER BLOCK DIAGRAM SW RDYB Delay 300ns CHG S Q R Q + - ILIM Interface IDAC + - One Shot Q S Q R + - 27mV FB 1.2V IGBT_EN IGBTIN IGBTOUT MP3361 Block Diagram Figure 1—Function Block Diagram MP3361 Rev. 0.9 4/13/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 5 MP3361 – 300V, 1A PEAK INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER OPERATION The MP3361 controlled flyback charger operates in critical conduction mode. The Output voltage is divided down through an internal 300: 1 resistive divider from the positive terminal of the transformer secondary, (FB pin) and compares it with an internal 1.2V reference. The low to high transition of the CHG pin will enable the flyback converter to switch. A constant TOFF of 20μs is used when the output voltage is below 20V to avoid inrush current. The boundary mode operation will follow to minimize charge time when the output voltage is above 20V. A minimum TOFF of 200ns serves as MP3361 Rev. 0.9 4/13/2010 blanking for turn off transition. The circuit will stop switching and RDYB will be pulled low once the flash capacitor is charged to 300V, a value set by the internal 300:1 R divider and 1.2V reference. When the charge is full, the part will shut down its internal circuitry with less than 1uA drawn from VIN. Toggling the CHG pin will start the charge cycle again. Bringing CHG pin low terminates the power delivery and puts the part in shutdown. A maximum TON timer prevents pulling current from a depleted battery. If the ON time exceeds maximum TON, the switch is forced OFF regardless of IPEAK detection. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 6 MP3361 – 300V, 1A PEAK INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER PACKAGE INFORMATION MSOP10 0.114(2.90) 0.122(3.10) 6 10 0.114(2.90) 0.122(3.10) PIN 1 ID (NOTE 5) 0.007(0.18) 0.011(0.28) 0.187(4.75) 0.199(5.05) 5 1 0.0197(0.50)BSC BOTTOM VIEW TOP VIEW GAUGE PLANE 0.010(0.25) 0.030(0.75) 0.037(0.95) 0.043(1.10)MAX SEATING PLANE 0.002(0.05) 0.006(0.15) FRONT VIEW 0o-6o 0.016(0.40) 0.026(0.65) 0.004(0.10) 0.008(0.20) SIDE VIEW NOTE: 0.181(4.60) 0.040(1.00) 0.012(0.30) 1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS IN MILLIMETERS. 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSION OR GATE BURR. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.004" INCHES MAX. 5) PIN 1 IDENTIFICATION HAS THE HALF OR FULL CIRCLE OPTION. 6) DRAWING MEETS JEDEC MO-817, VARIATION BA. 7) DRAWING IS NOT TO SCALE. 0.0197(0.50)BSC RECOMMENDED LAND PATTERN 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. MP3361 Rev. 0.9 4/13/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 7