Advanced Closed-Loop Haptic Driver with Integrated Boost and Waveform Memory
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 15V 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.
INNOVATION THAT ROCKS® ENGINEERED TO ROCK® CIRRUS® CIRRUS ROCKS®
Technologies
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
| Description |
Closed-loop haptic solution with Sensor-less Velocity Control, Audio to Haptics, and Active Vibration Compensation
(CS40L51)
Closed-loop haptic solution with Sensor-less Velocity Control (CS40L52) Closed-loop haptic solution with Click Compensation (CS40L53) |
| Digital Power Supply (V) | 3.3 or 1.8 |
| Boosted Amplifier Digital Power Supply (V) | 3-15 |
| Output Power (W) @1% THD+N, into 6 ohm | 12.9 |
| Operating Temperature Range (°C) | -40 to +105 |
| Max Boost Converter Voltage (V) | 18.5 |
| GPI Iputs | 4 (with I2S/TDM) or 8 (w/o I2S/TDM) |
| Package | 34 Pin Wettable Flank QFN |
Development Hardware and Software Available
To evaluate these products, order the base platform CDB6271-2 along with the appropriate daughter cards: CDB40L51-Q100, CDB40L52-Q100, CDB40L53-Q100
