7.5V to 15V, 2A 1ch Synchronous Buck Converter - BD95821MUV
BD95821MUV is a 1ch synchronous buck converter that can generate output voltage (0.8V to 5.5V) at the input voltage range (7.5V to 15V). Space-saving and high efficient switching regulator can be achieved due to built-in N-MOSFET power transistors. The IC also incorporates H3Reg™ technology, a Rohm proprietary constant ONTIME control mode which facilitates ultra-high transient response against changes in load without external compensation components. Fixed soft start function, power good function, and short circuit / over voltage protection with timer latch functions are incorporated. The BD95821MUV is designed for power supplies for Digital AV Equipment.
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Technical Documents
Application Note
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Method for Monitoring Switching Waveform
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This application note explains how to correctly monitor the switching waveforms of the power device element such as switching power supply or a motor drive circuit.
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Reference Circuits and Bomlist
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Reference Circuits and Bomlist
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Bootstrap Circuit in the Buck Converter
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This application note explains the step-up circuit using a bootstrap capacitor. In buck converters, this circuit is used when the highside switch is the N-ch MOSFET.
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PCB Layout Techniques of Buck Converter
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Major problems that arise from in appropriate layout may cause increase in noise superposed by output and switching signal, the deterioration of regulator, and also lack of stability...
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Method for Determining Constants of
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This application note explains the procedures for determining the constants of peripheral parts of a buck DC/DC converter.
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Power Supply Sequence Circuit with General Purpose Power Supply IC
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This application note proposes a circuit that accomplishes the power supply sequence without using any dedicated power supply sequence IC, by using general purpose power supply ICs.
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Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
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This application note describes the method and result of the ripple and switching noise suppression using a linear regulator and a low pass filter.
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Phase Compensation Design for Current Mode Buck Converter
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This application note explains the method used by ROHM for designing the phase compensation for current mode buck converters.
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Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
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This application note introduces a method for easily measuring the phase margin with a Frequency Response Analyzer (FRA) made by NF Corporation.
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Usage of SPICE Macromodel for DC/DC
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This application note explains how to install SPICE macromodels and how the circuit symbols are configured.
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Snubber Circuit for Buck Converter IC
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In buck converter ICs, many high-frequency noises are generated at switch nodes. A snubber circuit provides one way of eliminating such harmonic noise. This application note explains how to set up the RC snubber circuits.
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Efficiency of Buck Converter
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This application note explains power loss factors and methods for calculating them. It also explains how the relative importance of power loss factors depends on the specifications of the switching power source.
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Calculation of Power Loss (Synchronous)
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This application note describes how to obtain the power loss required to calculate the temperature of a semiconductor device. Temperature control is important to ensuring product reliability.
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Thermal Resistance
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The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.
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Inductor Calculation for Buck converter IC
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This application note covers the steps required in choosing the inductor and to calculate the value used in buck regulator IC circuits.
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Considerations for Power Inductors Used for Buck Converters
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This application note explains the features and things to consider when shopping for power inductors.
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Capacitor Calculation for Buck converter IC
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This application note explains the calculation of external capacitor value for buck converter IC circuit.
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The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit
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Using unmatched MLCC may not obtain required target characteristics for power supply circuit and may cause abnormal operation. This application note explains the important points while using MLCC.
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Resistor Value Table to set Output Voltage of Buck Converter IC
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This Application Note offers reference table to easily set resistor values for output voltage with various internal reference voltages VREF.
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Part Explanation
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For ICs
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Additional information Batch Download
Package Information
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Package Information
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Package Structure, Packing Specification, Footprint dimensions, Marking Specification, Storage conditions, Soldering conditions
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Anti-Whisker formation
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Environmental Data
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UL94 Flame Classifications of Mold Compound
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Compliance with the ELV directive
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REACH SVHC Non-use Declaration
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RoHS Comission Delegated Directive
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Export Information
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The Export Control Order
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Export Administration Regulations(EAR)
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Other
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Factory Information
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