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Haptic Drivers

CS40L51/52/53

Advanced Closed-Loop Haptic Driver with Integrated Boost and Waveform Memory

CS40L51/52/53 Overview

The CS40L51/52/53 family introduces Cirrus Logic’s first haptic driver solution reliability qualified in accordance with the AEC-Q100 automotive standard. Designed with a fully integrated architecture, the CS40L51/52/53 family combines a high performance 15 V Class D amplifier, boost converter, voltage and current monitoring ADCs, waveform memory, and the powerful Halo Core™ DSP. This advanced platform simplifies design for engineers while delivering real-time closed-loop control to maximize actuator response and expand frequency bandwidth for richer haptic effects. At the core is a suite of proprietary algorithms that dynamically adjust actuator performance using real-time voltage and current data. This ensures precise, stable, and high-definition haptic feedback across varying environmental and mechanical conditions. CS40L51 – Combines advanced Sensor-less Velocity Control (SVC), real-time audio to haptics synchronization (A2H), and active vibration compensation (AVC) for immersive, high-fidelity feedback. CS40L52 – Features the advanced closed-loop control SVC that optimizes the system haptic performance in real-time by reducing response time, increasing frequency bandwidth and compensating for manufacturing tolerances and temperature variation. CS40L53 – Features the Click Compensation algorithm to enable consistent haptic feedback across systems by adjusting haptic effects based on the actuator manufacturing characteristics. These features make the CS40L51/52/53 family ideal for a wide range of automotive applications such as steering wheels, center consoles, interactive displays, seats, smart surfaces and more. Learn more about Cirrus Logic's Automotive Haptic Solutions.

Product Features

  • Closed-loop hardware and algorithms (SVC)

    • Fast startup and braking for crisp/strong haptic feedback

    • Extended actuator bandwidth supports textured effects

    • Ensures consistent performance across actuator manufacturing variations, temperature, and aging

    • Removes need for factory production-line calibration

  • Integrated 15 V Class H boost converter

    • Provides high output power for fast closed-loop response

    • Enables consistent performance across battery conditions

    • Supports multiple actuators driven in parallel (3 Ω minimum)

  • Optimized low-latency and low-power hardware architecture

    • Ultrafast wake-to-haptics enables imperceptible latency between touch/press events and haptic feedback

    • Low-power Hibernate State with memory retention

    • ROM/RAM-stored waveforms triggered by I2C/SPI/GPIO

  • Haptics waveform memory

    • Simplifies system integration and reduces latency

    • Enables software-configurable vehicles

    • Stores PWLE and PCM waveforms in RAM

  • AEC-Q100 Grade-2 qualified for automotive applications, operating temperature –40 to 105°C

Parametric Specifications

Package34 Pin QFN
Control InterfaceSPI or I²C
GPI Inputs4 (with I²S/TDM) or 8 (w/o I²S/TDM)
Digital Power Supply (V)3.3 or 1.8
Boosted Amplifier Digital Power Supply (V)3-15
Max Boost Converter Voltage (V)18.5
Output Power (W)12.9

Design Resources

Browse Resource Library

Evaluation Boards

  • Haptics Driver Evaluation Board (CDB40L5x-Q100)

    Haptics Driver Evaluation Board (CDB40L5x-Q100)

    The CDB40L5x-Q100, used with the Lochnagar 2 development platform, is a customer development board for evaluating the Cirrus Logic CS40L51, CS40L52, and CS40L53 haptic driver devices. It supports two devices, SoundClear Studio tuning, and configurable power and control interfaces.

    Order SampleUser Guide

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