LTC3738 - LTC3738是3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning

LTC3738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，LTC3738是LTC3738是3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning，本站介绍了LTC3738的封装应用图解、特点和优点、功能等，并给出了与LTC3738相关的LINEAR元器件型号供参考。

LTC3738 - LTC3738是3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning - 数字可编程的降压型稳压器 - 电源管理 - 凌力尔特

LTC3738 - 3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning

LTC3738 - 3-Phase Buck Controller for Intel VRM9/VRM10 with Active Voltage Positioning - Linear Technology（凌力尔特）

功能描述

The LTC3738 is a 3-phase 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 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 Pulse Skip mode technology.

The LTC3738 also allows users to program load slope via a resistor for AVP control. Both external and internal thermal sensing are available from the on-chip thermal detector and comparator.

A differential amplifier provides sensing of both the high and low sides of the output voltage.

Soft-start and a defeatable, timed short-circuit shutdown protect the MOSFETs and the load. A foldback current circuit also provides protection for the external MOSFETs under short-circuit or overload conditions. An all- “1” VID detector turns off the regulator after a 1µs timeout.

U.S. Patent Numbers: 5481178, 5994885, 5929620, 6177787, 6144194, 6580258, 6462525, 6593724, 6674274, 6100678 pending on AVP technique.

特点

3-Phase Controller with Onboard MOSFET Drivers

Programmable Active Voltage Positioning (AVP) with True Current Sensing

Programmable External Thermal Detection or Internal Thermal Sensing

Precise Output Current Matching Optimizes Thermal Performance and Solution Size

Supports Starting into Precharged VOUTS

Differential Amplifier Accurately Senses VOUT

PWM, Pulse Skip and Stage SheddingTM Operation

Synchronizable

210kHz to 530kHz Per Phase, Fixed Frequency

Output Power Good Indicator with Adaptive Blanking