RT9612B Datasheet | Richtek

® RT9612A/B Synchronous-Rectified Buck MOSFET Driver General Description The RT9612A/B is a high frequency, synchronous rectified, single phase dual MOSFET driver designed to adapt from normal MOSFET driving applications to high performance CPU VR driving capabilities. The RT9612A/B can be utilized under both VCC = 5V or VCC = 12V applications. The RT9612A/B also builds in an internal power switch to replace external boot strap diode. The RT9612A/B can support switching frequency efficiently up to 500k Hz. The RT9612A/B has the UGATE driving circuit and the LGATE driving circuit for synchronous rectified DC/DC converter applications. The driving rise/ fall time capability is designed within 30ns and the shoot through protection mechanism is designed to prevent shoot through of high side and low side power MOSFETs. The RT9612A/B has PWM tri-state shut down function which can force driver output into high impedance. The difference of the RT9612A and the RT9612B is the propagation delay, t UGATEpdh. The RT9612B has paratively large t UGATEpdh than RT9612B. Hence, the RT9612A is usually remended to be utilized in performance oriented applications, such as high power density CPU VR or GPU VR. The RT9612A/B es in a small footprint with SOP-8, SOP-8 (Exposed Pad) and WDFN-8EL 3x3. Features Drive Two N-MOSFETs Adaptive Shoot Through Protection Embedded Bootstrap Diode Support High Switching Frequency Fast Output Rise Time Tri-State Input for Bridge Shutdown Small SOP-8, SOP-8 (Exposed Pad) and 8-Lead WDFN Packages Ro HS pliant and Halogen Free Applications Core Voltage Supplies for Desktop, Motherboard CPU High Frequency Low Profile DC/DC Converters High Current Low Voltage DC/DC Converters Ordering Information RT9612A/B Package Type S : SOP-8 SP : SOP-8 (Exposed Pad-Option1) QW : WDFN-8EL 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) Z : ECO (Ecological Element with Halogen Free and Pb free) Note : Long Dead Time Short Dead...