LTC3730 - LTC3730是3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller

LTC3730是LINEAR凌力尔特公司的一款数字可编程的降压型稳压器产品，LTC3730是LTC3730是3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller，本站介绍了LTC3730的封装应用图解、特点和优点、功能等，并给出了与LTC3730相关的LINEAR元器件型号供参考。

LTC3730 - LTC3730是3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller - 数字可编程的降压型稳压器 - 电源管理 - 凌力尔特

LTC3730 - 3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller

LTC3730 - 3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller - Linear Technology（凌力尔特）

功能描述

The LTC3730 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.

特点

3-Phase Current Mode Controller with Onboard MOSFET Drivers

±5% Output Current Match Optimizes Thermal Performance and Size of Inductors and MOSFETs

Operational Amplifier Accomodates Mode Switching

±1% VREF Accuracy Over Temperature

Reduced Input and Output Capacitance

Reduced Power Supply Induced Noise

VOUT Programmable from 0.6V to 1.75V (IMVP III)

±10% Power Good Output Indicator

250kHz to 600kHz Per Phase, PLL, Fixed Frequency

PWM, Stage Shedding™ or Burst Mode Operation

OPTI-LOOP Compensation Minimizes COUT