Smart Haptic Driver Enables HD Haptics on Mobile Devices for Enhanced Gaming, Videos and Music
The CS40L26/CS40L26B is the industry’s leading self-contained haptic driver IC that integrates a DSP and Class D digital boost converter to enable advanced closed-loop control of the actuator, HD enabled haptics and audio generated haptics for use in smartphones, tablets and wearables. Advanced sensor-less velocity control (SVC) provides real-time braking and consistent acceleration of the LRA, plus wider bandwidth and broader frequency range – essential features for gaming UX.
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Technology
Features
- Sensor-less velocity control
- Widens LRA bandwidth for consistent performance
- LRA protection
- Wakeup from Always on Haptic hibernate mode in 5 ms
- 11 V amplifier supply voltage for fast startup and braking
- Short circuit protection
- Faster processing – 130 MHz
- Easily design new haptics effects for UI/alerts/button replacement with state-of-the-art tools
- On-chip ROM - 18 KB storage
- Algorithm dynamically handles changes in actuator characteristics to eliminate the need to fine tune for long periods of time
- 2 MHz switching frequency
- IC thermal self-protection against over temperature
- Battery rail reactive brownout system protection
- Audio coupled haptics with I2S support
- Open wave table and chirp with scalability supports haptics APIs, with on the fly haptic generation
Parametric Specifications
| Description | Haptic DSP + Boost Class D Amplifier |
| Digital Power Supply (V) | 1.8 |
| Boosted Amplifier Digital Power Supply (V) | 2.5-5.5 |
| Output Power (W) @1% THD+N, into 6 ohm | 5.3 |
| Operating Temperature Range (°C) | -40 - +85 |
| Max Boost Converter Voltage (V) | 11 |
| GPI Iputs | 1 (with I2S/TDM), 3 (w/o I2S/TDM) (CS40L26) 4 (CS40L26B) |
| Package | 30-ball WLCSP |
