厂商：Freescale
类别：16位单片机
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Murata
类别：EMI滤波器
我要询价我要收藏
特点3-Phase Current Mode Controller with Onboard MOSFET Drivers±5% Output Current Match Optimizes Thermal Performance and Size of Inductors and MOSFETsOperational Amplifier Accomodates Mode Switching ±1% V REF Accuracy Over Temperature Reduced Input and Output CapacitanceReduced Power Supply Induced Noise V OUT Programmable from 0.6V to 1.75V (IMVP III) ±10% Power Good Output Indicator250kHz to 600kHz Per Phase, PLL, Fixed FrequencyPWM, Stage Shedding? or Burst Mode? Operation OPTI-LOOP? Compensation Minimizes C OUT Adjustable Soft-Start Current Ramping 4V, V IN ,Undervoltage RUN/SS Reset/Reattempt Circuit Short-Circuit Shutdown Timer with Defeat OptionOvervoltage Soft LatchSmall 36-Lead Narrow (0.209”) SSOP Package典型应用描述The LTC?3730 is a PolyPhase? synchronous step-down switching regulator controller that drives all N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The 3-phase controller drives its output stages with 120° phase separation at frequencies of up to 600kHz per phase to minimize the RMS losses in both the input and output filter capacitors. The 3-phase technique effectively triples the fundamental frequency, improving transient response while operating each controller at an optimal frequency for efficiency and ease of thermal design. Light load efficiency is optimized by using a choice of output Stage Shedding or Burst Mode technology.An internal operational amplifier provides mode selectable output voltage programming in conjunction with the internal VID voltage control DAC.Soft-start and a defeatable, timed short-circuit shutdown protect the MOSFETs and the load. Current foldback provides protection for the external MOSFETs under short-circuit or overload conditions.