FAN8831 Series

Sinusoidal Piezoelectric Actuator Driver with Step-Up DC-DC Converter

Catalog

Sinusoidal Piezoelectric Actuator Driver with Step-Up DC-DC Converter

Part	Applications	Voltage - Load [Min]	Voltage - Load [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Output Configuration	Function	Interface	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Technology	Motor Type - AC, DC	Supplier Device Package
ON Semiconductor FAN8831MPX	Haptic Feedback	30 V	60 V	-55 °C	150 °C	24-WFQFN Exposed Pad	Half Bridge (2)	Driver - Fully Integrated Control and Power Stage	Parallel	2.7 V	5.5 V	Surface Mount	Power MOSFET	Piezo	24-MLP (4x4)
ON Semiconductor FAN8831MPX	Haptic Feedback	30 V	60 V	-55 °C	150 °C	24-WFQFN Exposed Pad	Half Bridge (2)	Driver - Fully Integrated Control and Power Stage	Parallel	2.7 V	5.5 V	Surface Mount	Power MOSFET	Piezo	24-MLP (4x4)

Catalog

Sinusoidal Piezoelectric Actuator Driver with Step-Up DC-DC Converter

Key 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

• Adjustable Step-up Current Limit

• Zero Current Detector (ZCD)

• Internal Soft-Start

• Built-in Protection Circuit

• Over Voltage Protection (OVP)

• Thermal Shutdown (TSD)

• Piezo Actuator Driver

• Integrated Full-Bridge Switches (VDS=75 V)

• Digitally implemented Sine Modulator

• Package Information

• Small 4.0 mm × 4.0 mm MLP

Description

The FAN8831 is a single-chip piezoelectric actuator driver consisting of step-up DC-DC converter with integrated 36 V boost switch and a full-bridge output stage. The device is capable of driving a Piezo bi-directionally at 120 V peak to peak from a single 3 V lithium cell. The step-up DC-DC converter operates in critical conduction mode (CRM) and is optimized to work in a coupled inductor configuration to provide output voltages in excess of 60 V. Over-voltage protection, over -current protection, and thermal shutdown are all provided. An internal ready is used to enable the full-bridge gate driver when step-up DC-DC converter output voltage reaches the proper level with hysteresis. The boost voltage is set using external resistors, and step-up current limit is programmable via the external resistor at OCP pin. The output H-bridge features four integrated 75 V P and N-channel for sine wave drive of the Piezo actuator.