## STDRIVEG600W: High-Speed Half-Bridge Gate Driver The **STDRIVEG600W** is a high-voltage gate driver specifically designed to drive **Enhancement-mode Gallium Nitride (eGaN®) FETs** or N-channel Power MOSFETs. It is optimized for high-speed switching and high efficiency in compact power conversion applications. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Driver Configuration** | Half-Bridge (High-side and Low-side) | | **Operating Voltage (Vcc)** | 4.75 V to 6.5 V | | **High-side Floating Rail** | Up to 600 V | | **Peak Current (Source/Sink)** | 1.3 A / 2.4 A | | **Propagation Delay** | 45 ns (typical) | | **dV/dt Immunity** | $\pm$ 200 V/ns | | **Package** | SO-16 (Wide body) | --- ### 2. Major Electronic Components & Features #### A. Integrated Bootstrap Diode Unlike traditional drivers that require an external high-voltage diode to charge the high-side capacitor, the STDRIVEG600W integrates this component. This reduces the **BOM (Bill of Materials)** and PCB footprint. #### B. Logic Inputs (INL / INH) The device features two independent CMOS/TTL compatible inputs. * **Interlocking:** It includes a hardware interlocking function to prevent "shoot-through" (where both high-side and low-side FETs turn on simultaneously). * **Deadtime:** The driver ensures a minimum deadtime to protect the power stage. #### C. UVLO (Under Voltage Lockout) Both the low-side and high-side sections have UVLO protection. This ensures that the GaN FETs are not driven if the supply voltage is too low, preventing the transistors from operating in the linear region which could lead to overheating and failure. #### D. High-Speed Level Shifter The internal level shifter is designed to handle very high voltage gradients (dV/dt). Since GaN FETs switch much faster than traditional Silicon MOSFETs, this driver is built to resist noise generated by fast switching transitions. --- ### 3. Typical Application Circuit To use the STDRIVEG600W, a few external passive components are required: ```markdown 1. Vcc Capacitor: Decoupling for the logic/low-side supply. 2. C_boot (Bootstrap Capacitor): Stores charge for the high-side driver. 3. R_gate (Gate Resistors): Controls the turn-on/off speed and damps ringing. 4. GaN FETs: The power switches being driven. ``` --- ### 4. Target Applications * **Server and Telecom:** AC-DC Power Supplies (PFC, LLC). * **Industrial:** DC-DC Converters and Motor Drivers. * **Consumer:** Solar Inverters and High-density Chargers.