MP3910 Peak Current Mode Boost PWM Controller with Programmable Frequency, External Soft Start, and Light Load Operation The Future of Analog IC Technology DESCRIPTION FEATURES (1) The MP3910 is a Peak Current Mode PWM 5V to 35V Supply Voltage Range controller that can drive an external MOSFET 1A 12V MOSFET Gate Driver capable of handling more than 10A current. It External Soft-Start has a typical operational current of 288A and Pulse Skipping Operation with Light Load can accommodate flyback, boost for non- Programmable Switching Frequency isolated and isolated applications. (30kHz-to-400kHz) Current mode control provides inherently simple Frequency Synchronizable from 80kHz-to- loop compensation and cycle-by-cycle current 400kHz limit. Under-voltage lockout, soft-start, internal Cycle-by-Cycle Current Limit regulated supply and slope compensation are Over Voltage Protection all provided to minimize the external component Short Circuit Protection count. Over Temperature Protection Available in an MSOP10 Package While designed for Flyback applications, the MP3910 can also be used for other topologies APPLICATIONS including Boost, Forward and Sepic. The 1A gate driver minimizes the power loss of the Telecom Isolated Power Supplies external MOSFET while allowing the use of a Brick Modules wide variety of standard threshold devices. Off-line Controller Additionally, MP3910 has pulse skipping mode General Step Up Applications function that improves the efficiency with light All MPS parts are lead-free and adhere to the RoHS directive. For MPS green load or no load. It also provides hiccup status, please visit MPS website under Products, Quality Assurance page. protection for OLP, OVP and SCP condition. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc.. The MP3910 is available in MSOP10 package. Notes: 1) Refer to Operation/Internal VCC Regulation section for <7V input voltage application. TYPICAL APPLICATION D OUT VIN VOUT C IN C OUT 8 RFB Q1 VIN 9 VCC 10 GATE C VCC 7 ISENSE R MODE MP3910 5 R 1 SENSE EN/SYNC EN GND R OVH 4 2 FB RT DFB SS COMP 6 3 RT ROVL C SS MP3910 Rev. 1.11 www.MonolithicPower.com 1 11/6/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. MP3910 PEAK CURRENT MODE BOOST CONTROLLER ORDERING INFORMATION Part Number* Package Top Marking MP3910GK MSOP10 M3910 * For Tape & Reel, add suffix Z (e.g. MP3910GKZ) PACKAGE REFERENCE TOP VIEW GND 1 GATE 10 RT 2 9 VCC COMP 3 8 VIN FB 4 7 ISENSE EN/SYNC 5 6 SS (2) (5) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC VIN to GND.....................................-0.3V to 40V MSOP10 ................................ 150..... 65... C/W VCC, GATE to GND.......................0.3V to 15V Notes: All Other Pins...................................0.3V to 6V 2) Exceeding these ratings may damage the device. (6) EN Pin Sink Current.............................. 0.5mA 3) The maximum allowable power dissipation is a function of the (3) maximum junction temperature T (MAX), the junction-to- J Continuous Power Dissipation (T = +25C) A ambient thermal resistance , and the ambient temperature JA ...........................................................0.83W T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX) = (T D J Maximum Operating Frequency............. 500kHz (MAX)-T )/ . Exceeding the maximum allowable power A JA Storage Temperature............... -55C to +150C dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal Junction Temperature...............................150C shutdown circuitry protects the device from permanent Lead Temperature ....................................260C damage. 4) The device is not guaranteed to function outside of its (4) Recommended Operating Conditions operating conditions. 5) Measured on JESD51-7, 4-layer PCB. Supply Voltage V ..............................7V to 35V IN 6) Refer to Enable/SYNC Control section. Supply Voltage with V and V connected IN CC ......................................................5V to 13V (5) EN Pin Sink Current.................. 0mA to 0.4mA Operating Junction Temp. (T ). -40C to +125C J MP3910 Rev. 1.11 www.MonolithicPower.com 2 11/6/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved.