White Paper
- Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs
User's Guide
- Evaluation Board User's Guide
BU90004GWZ
BU90004GWZ
1.0A 輸出FET 內建型 高效率降壓開關穩壓器
BU9000xGWZ最大可以6MHz的開關頻率工作、為兼具小型、高效率的降壓開關穩壓器。可對應最大1.0A(VIN=3.0～5.5V時)的輸出電流、將電池驅動的行動裝置最佳化。可藉由MODE端子的特性強制自動切換PWM模式或PWM/PFM模式。在PFM模式下可減少本身的耗電流、改善輕負載時的效率。
Product Detail
規格:
Grade
Standard
ch
1
Integrated FET / Controller
Integrated FET
Topology
Buck
Synchronous / Nonsynchronous
Synchronous
Vin1(Min.)[V]
2.3
Vin1(Max.)[V]
5.5
Vout1(Min.)[V]
1.8
Vout1(Max.)[V]
1.8
Iout1(Max.)[A]
1.0
SW frequency(Max.)[MHz]
6.0
Light Load mode
Yes
EN
Yes
PGOOD
No
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
功能:
・Fast transient response・Automatic PFM/PWM operation
・Forced PWM operation
・Internal Soft Start
・Under voltage lockout
・Over current protection
・Thermal shutdown
Evaluation
Board
-
- Evaluation Board
- BU90004GWZ-E2EVK-101
This evaluation board has been specifically developed to evaluate the BU90004GWZ synchronous buck DC/DC converter with integrated 250mΩ high-side Pch and 220mΩ low-side Nch MOSFETs.
Design Resources
Documents
White Paper
- Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs
User's Guide
- Evaluation Board User's Guide
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
- What Is Thermal Design
- Method for Calculating Junction Temperature from Transient Thermal Resistance Data
- Notes for Temperature Measurement Using Thermocouples
- Two-Resistor Model for Thermal Simulation
- Notes for Temperature Measurement Using Forward Voltage of PN Junction
- Thermal Resistance
- Precautions When Measuring the Rear of the Package with a Thermocouple
Packaging & Quality
Package Information
- Package Information
Manufacturing Data
- Factory Information
Environmental Data
- Compliance with the ELV directive
- REACH SVHC Non-use Declaration
- RoHS Comission Delegated Directive
Export Information
- The Export Control Order
- Export Administration Regulations(EAR)