Synchronous Buck Dr.MOS Power Stage


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The RT9682A/B is a high efficiency synchronous buck power stage module consisting of two asymmetrical MOSFETs and an integrated driver. The MOSFETs are individually optimized for operation in the synchronous buck configuration. The high side MOSFET has low capacitance and gate charge for fast switching with low duty cycle operation. The low side MOSFET has ultra low RDS(ON) to minimize conduction losses. A number of features are provided making the RT9682A/B a highly versatile power module. The boot strap diode is integrated in the driver. The low-side MOSFET can be driven into diode emulation mode to provide asynchronous operation to improve light load efficiency. The pin-out is optimized for low inductance routing of the RT9682A/B keeping the parasitics and their effects to the minimum.

The RT9682A/B is available in a UQFN-11HL 3x3 (FC) package.


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Key Spec.
RT9682A RT9682B
Status Active Preview
Efficiency 84 84
Fsw 1000 1000
Features Enable Input;Tri-State Input Enable Input;Tri-State Input
Package Type UQFN3x3-11H(FC) UQFN3x3-11H(FC)
  • Up to 1MHz Operating Frequency
  • For PWM 5V Logic (RT9682A)
  • For PWM 3V Logic (RT9682B)
  • Input Voltage Up to 23V
  • Over-Temperature Protection
  • Max Continue Current up to 12A
  • Low Quiescent Current
  • Tri-State PWM Input
  • Integrated Bootstrap Diode
  • High Density Package with UQFN-11HL 3x3 (FC)
TitleLast UpdateShareDownload
Synchronous Buck Dr.MOS Power Stage2018/04/16