IR3651STRPBF Infineon

Data Sheet No. PD94720revC IR3651SPBF HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER Description Features High Voltage Operating up to 100V The IR3651 is a high voltage PWM controller Programmable Switching Frequency up to 400kHz designed for high performance synchronous Buck 1A Output Drive Capability DC/DC applications. The IR3651 drives a pair of Precision Reference Voltage (1.25V) external N-MOSFETs using a programmable Programmable Soft-Start switching frequency up to 400kHz allows flexibility Programmable Over Current Protection to tune the operation of the IC to meet system Hiccup Current Limit Using MOSFET R DS(on) sensing level requirements, and synchronization allows External Frequency Synchronization the simplification of system level filter design. The 14-pin SOIC Package output voltage can be precisely regulated using the internal 1.25V reference voltage for low Applications voltage applications. Protection such as under 48V non-isolated DC to DC Converter voltage lockout and hiccup current limit are Embedded Telecom Systems provided to give required system level security in Networking and Computing Voltage Regulator the event of fault conditions. Distributed Point of Load Power Architectures General high voltage DC/DC Converters Vaux=12V Vin: 36V-75V Vin: 12V-100V C3 C1 C4 C2 DRVcc Vb Q1 Vcc HDrv Vout L1 SYNC Vs IR3651S Rt ROCset OCset C5 C8 R3 Q2 R1 R5 SS/SD LDrv C6 PGnd C9 Gnd Fb Comp R2 C7 R4 C10 Typical application Circuit ORDERING INFORMATION PKG PACKAGE PIN PARTS PARTS T&R DESIG DESCRIPTION COUNT PER TUBE PER REEL ORIANTAION S IR3651SPBF 14 55 ------- Fig A S IR3651STRPBF 14 -------- 2500 06/08/2011IR3651SPBF ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND) Vcc, DRVcc Supply Voltage .................................. -0.3V to 20V Vs Supply Voltage .. -0.3V to 150V Vb Supply Voltage .. -0.3V to Vs+20V OCset ... 10mA Storage Temperature Range ..................................... -65C To 150C Operating Junction Temperature Range ................... -40C To 150C ESD Classification .. JEDEC, JESD22-A114 (1K) o Moisture Sensitivity Level . JEDEC Level 2 260 C CAUTION: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. Package Information 14-Pin SOIC NB (S) Fb 1 14 Rt Comp 2 13 Gnd SS/SD 3 12 OCset SYNC 4 11 Vcc Vs PGnd 5 10 Ldrv 6 9 HDrv DRVcc 7 8 Vb o = 88.2 C/W JA o = 37 C/W JC 06/08/2011 2