ZCC1923替代BOS1921Piezo Haptic Driver with Digital Front End

FEATURES

• High-Voltage Low Power Piezo Driver o Drive 100nF at 190VPP and 250Hz with 490mW o Drives Capacitive Loads up to 1000nF o Energy Recovery o Differential Output o Small Solution Footprint, QFN & WLCSP  

• Low Quiescent Current: SHUTDOWN; SLEEP; IDLE; IDLE mode Current only 90uA

 • Multiple operating modes: AUTOPLAY; SENSEPLAY; DIRECTPLAY; FIFOPLAY; SRAMPLAY

 • Wide Supply Voltage Range of 2.3V to 5.5V

 • Advanced Piezo Sensing Capabilities o 8.8 mV Sensing Resolution o Interrupt Generation o Automatic Triggering of Haptic Feedback

• Integrated Digital Front End with I2C o 1024 sample Internal FIFO Interface o 1.8 V Digital I/O Supply o Supports Continuous Waveforms Playback o State Retention in SLEEP Mode

 • Fast Start Up Time less than 200 µs • Multi-Actuator Synchronization; address selection; Power-on-Reset • ESD verification pass, latch up verification pass

DESCRIPTION

The ZCC1923 is a single-chip piezo actuator driver with energy recovery, based on Analogwin’s patented technology. It can drive actuators with waveforms up to 190 Vpk-pk while operating from a 2.3 to 5.5 V supply voltage. Its low power and small size make it ideal for a variety of applications requiring minimal power consumption. The ZCC1923 features high-resolution piezo sensing capabilities allowing haptic feedback to be automatically played when detection conditions are met. The ZCC1923 differential driver achieves low distortion waveforms and quiet actuator operation. All settings are adjustable through the digital front end to reduce the BOM. Data and configuration parameters are easily communicated to the ZCC1923 through its two wire I2C interface. A flexible deep FIFO enables the streaming of digital waveform data for playback or the transmission of burst data for more bandwidth efficiency. The ZCC1923 also integrates 1.5 kB of RAM waveform memory to generate HD haptic waveforms with minimal communication bandwidth. A dedicated SYNC pin can synchronize multiple ZCC1923 controllers to simultaneously drive multiple actuators within 2µs. In addition to SYNC synchronization, ZCC1923 can also support CLK_SYNC synchronization. This function synchronizes the clock CLK, and multiple chips share the same CLK. With a typical start-up time of less than 200µs, the ZCC1923 latency is negligible in most systems. Various safety systems protect the ZCC1923 from damage in case of a fault.

APPLICATIONS

• Mobile Phones and Tablets

• Portable Computers, Keyboards and Mice

• Gaming Controllers, Wearables

• Electronic Cooling