## HIP2104F Electronic Overview The **HIP2104F** is a specialized high-frequency half-bridge MOSFET driver integrated circuit (IC) developed by Renesas (formerly Intersil). It is specifically designed to work in tandem with a microcontroller (MCU) to drive N-Channel MOSFETs in synchronous buck converter applications. --- ### Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage (VCC)** | 4.5V to 5.5V | | **Boot Voltage (PVCC)** | Up to 13.2V | | **Output Drive Current** | 2A (Source) / 2A (Sink) | | **Switching Frequency** | Up to 1MHz | | **Package Type** | 8 Ld SOIC or 8 Ld DFN | | **Dead Time Control** | Adaptive | --- ### Core Electronic Components & Functions The IC integrates several critical stages to ensure efficient power management: #### 1. Integrated Bootstrap Diode Unlike older drivers that require an external Schottky diode, the HIP2104F features an internal bootstrap diode. This reduces the component count and PCB space. It charges the bootstrap capacitor used to drive the high-side MOSFET. #### 2. Adaptive Dead-Time Control To prevent "shoot-through" (where both high-side and low-side MOSFETs are on at the same time, causing a short circuit), the HIP2104F monitors the gate voltages. It ensures one FET is completely off before the other is turned on. #### 3. PWM Input Logic The device accepts a single PWM input signal. Based on the logic level: * **PWM High:** High-side MOSFET turns ON. * **PWM Low:** Low-side MOSFET turns ON. * **PWM Tri-state:** Both MOSFETs turn OFF (useful for power-saving or fault modes). #### 4. Gate Drive Circuitry The IC contains robust pull-up and pull-down transistors capable of delivering high peak currents. This is necessary to quickly charge and discharge the gate capacitance of power MOSFETs, minimizing switching losses. --- ### Typical Pinout Configuration | Pin | Name | Description | | :--- | :--- | :--- | | 1 | **PWM** | Pulse Width Modulation input signal. | | 2 | **VCC** | Logic supply voltage. | | 3 | **BOOT** | Floating bootstrap supply for high-side drive. | | 4 | **UGATE** | Upper (High-side) gate drive output. | | 5 | **PHASE** | Return path for high-side drive (connected to inductor). | | 6 | **LGATE** | Lower (Low-side) gate drive output. | | 7 | **GND** | Signal and power ground. | | 8 | **PVCC** | Supply voltage for the gate drivers. | --- ### Applications * High-frequency DC/DC converters. * Core voltage regulators for Microprocessors. * Battery-powered portable equipment. * High-current POL (Point of Load) modules.