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Single Phase Synchronous Rectified Buck MOSFET Driver

RT9614A

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The RT9614A is a dual N-Channel MOSFETs driver for synchronous-rectified buck converter. Besides, the power switch is already integrated in this driver to replace external bootstrap diode for reducing system cost and complexity, while allowing the use of higher performance MOSFETs.

The RT9614A is a high performance driver that is capable to drive high/low-side MOSFETs with high speed switching frequency and consuming few of power dissipation. Besides, the operating voltage matches the 30V breakdown voltage of the MOSFET which makes the applications of the RT9614A are more flexible and extensive.

The RT9614A features 4.5V to 13.2V gate driver voltage provided by VCC pin. Further, the RT9614A offers around 30ns propagation delay time for high/low side MOSFETs and 1.1&! sink impedance on low-side gate driver to ensure no shoot-through power loss caused by high dV/dt phase node transitions. By using RT9614A. MOSFET gates can be efficiently switched up to 1MHz and the gate drivers have the capability to drive up to 3nF load. Hence, the RT9614A suits to variety of high-input voltage, high-current and single or multi-phase DC to DC converter applications, such as CPcore voltage and VGA suppliers.

Applications

  • Desktop, Systems
  • VGA Card
Key Spec.
RT9614A
Status Active
Number of Channels
Vcc (typ) (V) 12
UGATE Rise Time (typ) (ns) 25
UGATE Fall Time (typ) (ns) 12
LGATE Rise Time (typ) (ns) 24
LGATE Fall Time (typ) (ns) 10
UGATE Source Resistance (typ) (Ohm) 1.7
UGATE Sink Resistance (typ) (Ohm) 1.4
LGATE Source Resistance (typ) (Ohm) 1.6
LGATE Sink Resistance (typ) (Ohm) 1.1
Disable Pin
Built-In Bootstrap Diode No
Iq (typ) (mA)
Features Built-in Bootstrap Switch;Enable Input
Package Type WDFN3x3-8
Features
  • Shoot Through Protection
  • Embedded Bootstrap Diode
  • Up to 500kHz Operating Frequency
  • Fast Rising and Falling Time
  • Tri-State PWM Input
  • Enable Control
  • Pre-OVP Protection
  • 8-Lead WDFN Package
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateShareDownload
Single Phase Synchronous Rectified Buck MOSFET Driver2019/04/26
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