60V Synchronous Step-down Switching Regulator (Controller Type) - BD9611MUV

The BD9611MUV is a high-resistance, wide voltage input (10V to 56V), synchronous step-down switching regulator. BD9611MUV offers design flexibility through user-programmable functions such as soft-start, operating frequency, high-side current limit, and loop compensation. BD9611MUV uses voltage pulse width modulation, and drives 2 external N-channel FETs. The Under-Voltage Locked Output (EXUVLO) protection connected to its CTL terminal has high accuracy reference voltage. Its threshold voltage can be adjusted by the resistance ratio between VCC and GND as seen by pin CTL. BD9611MUV is safe for pre-biased outputs. It does not turn on the synchronous rectifier until the internal high-side FET has already started switching.
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* This product is a STANDARD grade product and not recommend for on-vehicle devices.
número de peça
Estado de Condição
Quantidade Unidade
Quantidade mínima Package
tipo de embalagem
BD9611MUV-E2 Active VQFN020V4040 2500 2500 Taping sim
Grade Standard
ch 1
Integrated FET / Controller Controller
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 10.0
Vin1(Max.)[V] 56.0
Vout1(Min.)[V] 1.0
Vout1(Max.)[V] 44.8
SW frequency(Max.)[MHz] 0.5
Light Load mode No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
  • ・ High Resistance and Wide Range Voltage Input :
     VCC=10V to 56V
    ・ Regulated Voltage Output to Drive External FET
     gate: REG10=10V
    ・ Internal Reference Voltage Accuracy: 0.8V±1.0%
    ・ Safe for Pre-biased Outputs
    ・ Adjustable Operating Frequency and Soft-start
    ・ Master/Slave Synchronization
    ・ Over Current Protection (OCP)
    ・ Under Voltage Locked Output (UVLO, EXUVLO)
    ・ Thermal Shut-down (TSD)
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Dados técnicos
Reference Circuits and Bomlist

Reference Circuits and Bomlist

Evaluation Board User's Guide

Evaluation Board BD9611MUV-EVK-001 User's Guide

Thermal Resistance

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.

Buck DCDC application circuit example using BD9611MUV

This application note describes using BD9611MUV external FET controller synchronous rectified buck DCDC application circuit example.

Calculation of Power Loss (Synchronous)

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.

Thermal Resistance

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.

Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)

This application note introduces a method for easily measuring the phase margin with a Frequency Response Analyzer (FRA) made by NF Corporation.

Resistor Value Table to set Output Voltage of Buck Converter IC

This Application Note offers reference table to easily set resistor values for output voltage with various internal reference voltages VREF.

PCB Layout Techniques of Buck Converter

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...

Snubber Circuit for Buck Converter IC

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Capacitor Calculation for Buck converter IC

This application note explains the calculation of external capacitor value for buck converter IC circuit.

Inductor Calculation for Buck converter IC

This application note covers the steps required in choosing the inductor and to calculate the value used in buck regulator IC circuits.

Efficiency of Buck Converter

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.

The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit

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Considerations for Power Inductors Used for Buck Converters

This application note explains the features and things to consider when shopping for power inductors.