BD9S400MUF-C
車電用2.7V~5.5V 輸入 4A MOSFET內建 1ch同步整流 降壓 DC/DC轉換器

BD9S400MUF-C是內建低導通電阻的功率MOSFET的同步整流降壓型DC/DC轉換器。最大可輸出4A的電流。憑藉SLLM™控制,實現輕載狀態的良好效率特性,適用於降低設備的待機功耗。具有2.2MHz高速開關頻率,適用於小型電感。具有基於電流模式控制的高速瞬態回應性能,可輕鬆設定相位補償。還可與外部脈衝同步。

8-channel power tree Reference Design
For automotive ADAS and Info-Display

Product Detail

 
料號 | BD9S400MUF-CE2
狀態 | 推薦品
封裝 | VQFN16FV3030 (Wettable Flank)
單位數量 | 3000
最小包裝數量 | 3000
包裝形式 | Taping
RoHS | Yes
Functional Safety | FS supportive

規格:

Grade

Automotive

Common Standard

AEC-Q100 (Automotive Grade)

ch

1

Integrated FET / Controller

Integrated FET

Topology

Buck

Synchronous / Nonsynchronous

Synchronous

Vin1(Min.)[V]

2.7

Vin1(Max.)[V]

5.5

Vout1(Min.)[V]

0.8

Vout1(Max.)[V]

4.4

Iout1(Max.)[A]

4.0

SW frequency(Max.)[MHz]

2.2

Light Load mode

Yes

EN

Yes

PGOOD

Yes

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

125

功能:

  • SLLM™ (Simple Light Load Mode) Control
  • AEC-Q100 Qualified(Grade 1)
  • Single Synchronous Buck DC/DC Converter
  • Adjustable Soft Start Function
  • Power Good Output
  • Input Under Voltage Lockout Protection
  • Short Circuit Protection
  • Output Over Voltage Protection
  • Over Current Protection
  • Thermal Shutdown Protection
  • Wettable Flank QFN Package

Evaluation
Board

 
    • Reference Design
    • REFRPT001-EVK-001
    • The REFRPT001-EVK-001 is a board included in power tree solution reference design named as REFRPT001 developed for infotainment devices such as vehicle clusters and center information displays, as well as for ADAS ECUs. The power system that can support functional safety is integrated on a single board, realizing an optimal configuration as a power tree.

  • User's Guide Detail

Design Resources

 

Documents

White Paper

  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs
  • For Automotive ADAS/Infotainment application, CISPR25 Class5 compliant 8 rails power tree Reference Design with power rail monitoring for supporting functional safety

User's Guide

  • User's Guide for REFRPT001-EVK-001

Reference Design

  • Application Note for REFRPT001-EVK-001
  • REFRPT001-EVK-001 EMC Test Report

Technical Articles

Schematic Design & Verification

  • Calculation of Power Dissipation in Switching Circuit
  • Considering Input Filter to Reduce Conducted Emissions by DCDC Converter
  • Considering Polarity of Power Inductor to Reduce Radiated Emission of DC-DC converter
  • Method for Monitoring Switching Waveform
  • Phase Compensation Design for Current Mode Buck Converter
  • Bootstrap Circuit in the Buck Converter
  • Method for Determining Constants of
  • Power Supply Sequence Circuit with General Purpose Power Supply IC
  • Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
  • PCB Layout Techniques of Buck Converter
  • Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
  • Usage of SPICE Macromodel for DC/DC
  • Snubber Circuit for Buck Converter IC
  • Efficiency of Buck Converter
  • Calculation of Power Loss (Synchronous)
  • Inductor Calculation for Buck converter IC
  • Considerations for Power Inductors Used for Buck Converters
  • Capacitor Calculation for Buck converter IC
  • The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit
  • Resistor Value Table to set Output Voltage of Buck Converter IC
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Thermocouples
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple

Tools

Simulations (Login Required)

  • Switching Regulators
    2.7V to 5.5V Input, 4A Integrated MOSFET, Single Synchronous Buck DC/DC Converter, For Automotive BD9S400MUF Frequency Domain
  • ADAS, Info-Display
    Load Response for 3.3V Power Tree Sub-circuit
  • Simulation Guide for REFRPT001 for 3.3V power tree sub-circuit / Load Response (ROHM Solution Simulator)
  • Method for Exporting Circuit Data (ROHM Solution Simulator)

Models

  • Unencrypted SPICE Model (Inquiry Form)
  • BD9S400MUF-C SPICE Model
  • BD9S400MUF-C SPICE Modeling Report
  • BD9S400MUF-C Two-Resistor Thermal Model Report

2D/3D/CAD

  • BD9S400MUF-C Footprint / Symbol
  • VQFN16FV3030 Footprint / Symbol
  • VQFN16FV3030 3D STEP Data

Packaging & Quality

Manufacturing Data

  • Factory Information

Environmental Data

  • REACH SVHC Non-use Declaration