LT3782 Datasheet | Linear Technology

LT3782 2-Phase Step-Up DC/DC Controller Features - - - - - - - - DESCRIPTIO - - - 2-Phase Operation Reduces Required Input and Output Capacitance Programmable Switching Frequency: 150k Hz to 500k Hz 6V to 40V Input Range 10V Gate Drive with VCC ≥13V High Current Gate Drive (4A) Programmable Soft-Start and Current Limit Programmable Slope pensation for High Noise Immunity MOSFET Gate Signals with Programmable Falling Edge Delay for External Synchronous Drivers Programmable Undervoltage Lockout Programmable Duty Cycle Clamp (50% or Higher) Thermally Enhanced 28-Lead SSOP Package The LT®3782 is a current mode two phase step-up DC/DC converter controller. Its high switching frequency (up to 500k Hz) and 2-phase operation reduce system filtering capacitance and inductance requirements. With 10V gate drive (VCC ≥13V) and 4A peak drive current, the LT3782 can drive most industrial grade high power MOSFETs with high efficiency. For synchronous applications, the LT3782 provides synchronous gate signals with programmable falling edge delay to avoid cross conduction when using external MOSFET drivers. Other Features include programmable undervoltage lockout, soft-start, current limit, duty cycle clamp (50% or higher) and slope pensation. The LT3782 is available in a thermally enhanced 28-lead SSOP package. , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6144194. U APPLICATIO S - - - Industrial Equipment Tele Infrastructure Interleaved Isolated Power Supply TYPICAL APPLICATIO VIN 10V TO 36V VCC R6 825k CIN 10µF 50V 2x R8 274k 1µF RUN 50V 4A Boost Converter L1 GBIAS1 GBIAS2 GBIAS BGATE1 RS1 0.004Ω VEE1 SLOPE DELAY RFREQ 80k DCL RSET SS 0.1µF VC 13k 100p F 6.8n F VEE2 10Ω SENSE1+ SENSE1- SENSE2+ SENSE2- FB GND 10n F 10n F RF1 475k 10Ω BGATE2 M2 Si7852dp 2x RS2 0.004Ω D1 30BQ060 D2 30BQ060 COUT1 10µF 50V 2x VOUT 50V, 4A + C3 L2 2µF M1...