HIP4081AIB Full-Bridge MOSFET Driver IC SOP-20

HIP4081AIB Full-Bridge MOSFET Driver IC SOP-20 is a high-frequency, high-voltage integrated circuit engineered to efficiently drive N-Channel power MOSFETs in a full-bridge configuration. This powerful driver chip provides four independent outputs capable of swinging from 0V up to the VDD supply voltage, making it an ideal core component for designing various power conversion and motion control systems. The HIP4081AIB features crucial shoot-through protection and adjustable dead-time control, ensuring high system reliability and optimizing efficiency by preventing simultaneous conduction of the high and low-side switches. Therefore, engineers frequently select this IC for its superior switching performance and robust design capabilities in demanding industrial and automotive environments. Furthermore, its small SOP-20 package minimizes board space, which contributes significantly to compact system design.

Key Features:

• Full Bridge Control: Integrates all necessary circuitry to drive four N-Channel MOSFETs in a complete H-bridge topology, simplifying board layout.
• High Operating Voltage: The high-side drivers comfortably handle bus voltages up to 80 V_DC, supporting a wide range of DC motor and power supply applications.
• Adjustable Dead Time: An external resistor allows designers to precisely set the interlock time (dead time) between high and low-side switching, minimizing power loss and ensuring shoot-through protection.
• High-Speed Switching: Operates at frequencies up to 1 MHz, enabling the use of smaller inductors and capacitors in power conversion systems.
• UVLO Protection: Includes Undervoltage Lockout (UVLO) circuitry on both high and low-side supplies to prevent erratic switching during power-up or power-down sequences.

Technical Specifications:

• Number of Outputs: Four (Two high-side, two low-side)
• Maximum Bus Voltage (V_BUS): 80 V_DC (Absolute maximum)
• Supply Voltage (V_DD): 7 V to 15 V
• Maximum Switching Frequency (F_SW): 1 MHz
• Output Source/Sink Current: 1.5 A / 3.0 A (Typically)
• Adjustable Dead Time Range (T_D): 0 ns to ≈ 4.5 μs
• Operating Temperature Range: −40°C to +85°C (Industrial)

Mechanical Specifications:

• Package Style: SOIC-20 (Small Outline Integrated Circuit)
• Mounting: Surface Mount Device (SMD/SMT)
• Moisture Sensitivity Level (MSL): MSL3
• Lead Finish: Matte Tin (Sn)

Dimensions:

• Body Length (Nominal): ≈ 12.8 mm
• Body Width (Nominal): ≈ 7.5 mm
• Pitch (Pin Spacing): 1.27 mm (50 mil)
• Height (Max): 2.65 mm
• Weight: ≈ 0.6 g (Typical)

Pinout and Wiring:

• IN A/B/C/D (Pins 1-4): These are the logic-level inputs that control the gate drive outputs.
• GND (Pin 7): Connect this pin to the low-side power return, which serves as the IC’s signal ground reference.
• VDD (Pin 8): Apply the 10V to 15V IC bias voltage here.
• HB A/B (Pins 10, 16): These high-side V_CC supply pins require bootstrap capacitor connections for floating high-side operation.
• HS A/B (Pins 11, 15): Connect these pins to the source of the respective high-side MOSFETs (the half-bridge output nodes).
• G OUT (Pins 12, 14, 17, 19): These outputs drive the gates of the four N-Channel MOSFETs in the bridge.
• Dead Time (Pin 5): Connect a resistor from this pin to GND to set the required dead time.

Datasheet Reference:

• Download HIP4081A Datasheet

Commonly Used in:

• Motor Control Boards: Provides the critical interface between microcontrollers and power stage for BLDC and stepper motors.
• DC-DC and DC-AC Converters: Used as the primary high-speed driver for high-efficiency power inverter circuits.
• Industrial Power Supplies: Forms the core of the power stage in highly regulated industrial switching power supplies.

Applications:

• High-Frequency Inverters: Drives the power switches in full-bridge and push-pull inverter topologies for AC synthesis.
• Switched Mode Power Supplies (SMPS): Implements the active switches in high-voltage, high-power DC/DC conversion circuits.
• Uninterruptible Power Supplies (UPS): Controls the output stage where the system converts DC battery power back to AC line voltage.
• Class D Amplifiers: Consequently, its clean and fast switching characteristics make it suitable for high-fidelity audio power stages.

Equivalent Models:

• IR2110 (Half-Bridge Driver Pairs): While not a single full-bridge IC, designers frequently utilize two IR2110 chips to construct a functionally similar, high-voltage full-bridge drive circuit.
• L6388E (STMicroelectronics): A full-bridge driver offering similar high-side and low-side capabilities, though potentially with different input logic.
• FAN7388: Another competitive high-side/low-side driver IC from Fairchild (now ON Semi) used in full-bridge topologies.

Package Includes:

• 1 x HIP4081AIB Full-Bridge MOSFET Driver IC SOP-20