FAN8841: Dual Half-Bridge Piezoelectric Driver with Step-up DC-DC Converter

Description: The FAN8841 is a single-chip piezoelectric actuato...
  • The FAN8841 is a single-chip piezoelectric actuator driver consisting of a step-up DC-DC converter with integrated 36 V boost switch and the dual half-bridge output stages. The step-up DC-DC converter operates in Critical Conduction Mode (CRM) in order to reduce switching loss at the DC-DC converter for high efficiency. It is optimized to work in a coupled-inductor configuration to provide output voltages in excess of 60 V. The step-up DC-DC converter has a soft-start capability that limits the inrush current during startup. Over-voltage protection and over-current protection are included. Under-voltage protection is used to disable the dual half-bridge gate driver when the step-up DC-DC converter output voltage is lower than the specified threshold voltage. The boost voltage is set using external resistors and analog voltage at the VCON pin and step-up current limit is programmable via the external resistor at the OCP pin. The output Half-bridge is integrated with 75 V P- and N-channel for the piezoelectric actuator driving. An open drain Fault-out (FO) signal indicates if an abnormal over-voltage has occurred.
  • Features
  • Step-up DC-DC Converter
  • Integrated Step-up Power Switch up to 36 V
  • Wide Operating Voltage Range of 2.7 to 5.5 V
  • Adjustable Step-up Output Voltage by VCON
  • Adjustable Step-up Switch Current Limit
  • Zero Current Detector (ZCD)
  • Internal Soft-Start
  • Built-in Protection Circuit
  • Under-Voltage Protection (UVP)
  • Over-Voltage Protection (OVP)Piezo Actuator Driver
  • Integrated Half-Bridge Switches (VDS=75 V)
  • Dual Half-Bridge Piezoelectric Driver
  • Built-in Shutdown FunctionPackage Information
  • Small 4.0 mm × 4.0 mm MLP
  • Applications
  • Portable Devices
  • Technical Documentation & Design Resources
    Availability and Samples
    FAN8841MPX
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Dual Half-Bridge Piezoelectric Driver with Step-up DC-DC Converter
  • Package Type: WQFN-24
  • Package Case Outline: 510BE
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):Contact Factory
  • Arrow:0
  • Mouser:>1K
  • Specifications
  • Number of Drivers:
  • VCC Max (V):
  • V(BR)GSS Max (V): 5.5 
  • V(BR)DSS Max (V): 75 
  • ID Max (A):
  • rDS(on) Max (Ω):
  • Tj Max (°C): 150 
  • Package Type: WQFN-24 
  • ON Semiconductor Full Web Site