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DRV2700: 200Vpp, 1000Vp Piezoelectric Actuator Driver Created 3/04/2015 Updated 3/04/2015 1 DRV2700 200Vpp, 1000Vp Piezoelectric Actuator Driver Features Benefits • 40 VPP to 200 VPP Output (Boost+amp mode) • Drives bi-directional piezo actuators • Up to 1000Vp Output (Flyback mode) • Drives high voltage into uni-directional piezos • Boost Converter with Integrated FET & Diode • 90% Smaller footprint vs. discrete circuit • Adjustable Boost Voltage (15-105V) • Optimized voltage for application • Adjustable Boost Current Limit (<2.25A) • Inductor & current drive sized to application • Small-signal bandwidth to 20kHz • Excellent audio voice quality for piezo sounders • Fast Start Up Time of 1.5ms • Fast startup from shutdown • Thermal Protection • Reliable device operation • 4 mm x 4 mm x 0.9 mm QFN package • Easy-to-use device footprint Applications VBAT L1 • Piezoelectric Positioning Actuators • Piezo stacks • Piezo Benders • Piezo Discs • Piezoelectric Micropumps • Piezoelectric Sounders, Speakers • Electroactive Polymer Actuators • High Voltage bias circuits • Building Automation: Security CPUMP CBOOST Boost Converter R1 REXT DRV2700 IN+ Gain INEN GAIN0 GAIN1 R2 + – Piezo Actuator Piezo Driver Portfolio Boost Voltage New Roadmap Future High Voltage 200 DRV2701 Actuator Driver 100 DRV2700 200VP Piezo Driver Charge Amplifier SPI Interface 4x4mm QFN 200VPP , 1000VP Piezo Driver Linear Amplifier 4x4mm QFN Integration Multi-Channel Competitive Landscape Part Number Strength Concern Weakness Linear Tech LT3469 MPS MP3801 Microchip HV513 TI DRV2700 2.5-16V 2.5-5.5V 50-250V 3.0 – 5.5V N/A 200Vpp N/A 200Vpp 35Vp 100Vp 250Vp 1000Vp Y Y N Y Y N N Y Differential Oscillator Digital Differential Small-signal bandwidth 600kHz 1kHz 300Hz 20kHz Switch FET current 220mA 100mA 9.5mA 2.25A Maximum capacitive load 200nF ?? 50nF >10mF 3.9mA 10nA 2.0mA 13mA 2.9 x 2.8 x 1.0 mm 8.1mm2 4.8 x 3.0 x 0.9 14.4mm2 6.0 x 6.0 x 0.8 36mm2 4.0 x 4.0 x 1.0 mm 16mm2 Input Supply Voltage (V) Output Voltage (Differential) Output Voltage (Single-ended) Integrated Boost? Linear Amplifier? Input type Shutdown current Package size Success Stories: DRV2700 Piezo Alarm Sounder Where We Won Why We Won Who: EMEA Fire Detection Provider • Customer’s existing resonant piezo driver provided loud alarms but poor voice quality. • DRV2700 was able to replace the high output voltage (>80Vpp), maintain the required loudness and flat frequency response provided good voice quality. What: DRV2700, MSP430FR2033, TPS62080 Where: Alarm Sounder Volume: 80ku/yr; $150k / year Customer Need: Voice alerts and alarm sirens at high SPL using piezo sounder Battery TPS62080 3.0V Piezo Sounder MSP430FR2033 Voice + Tone Generation PWM DRV2700 80Vpp Success Stories: DRV2700 Industrial Inkjet Printhead Where We Won Why We Won Who: Japanese Industrial Printhead Provider • DRV2700 provided significantly smaller solution than the customer’s prior piezo driver solution (discrete). • DRV2700 was able to replace the high output voltage in a smaller form factor while maintaining the required ink flow rate. Customer’s design based on DRV2700EVM-HV500. What: DRV2700 (4pcs per system) Where: Industrial Inkjet Printhead Volume: 40ku/yr; $100k / year Customer Need: 280Vpp at 100Hz into piezoelectric micropump (~40nF load) Power PWM 5.0V DRV2700 Printhead Controller Frequency / amplitude control Pump A 140Vp 280Vpp DRV2700 DRV2700 140Vp 140Vp Pump B 280Vpp DRV2700 Ink 140Vp Ink TI Designs or Application: TIDA-00376 Getting Your Customer Started Piezo Audio Annunciator & LED Drive Solution Features Solution Benefits Drives a Piezo Speaker >90 dBA for single-tone (520Hz and 3.1kHz, per output design goal) Plays back audio files through piezo speaker Drives LEDs for visual indication 1-2 Hz flashing frequency Complies with NFPA candela requirement Annunciator audio output (single frequency tone or audio) High-intensity LED strobe light visual indicator Compliant to National Fire Protection Association (NFPA) Code standards Coming Summer 2015 System Level View Piezo Transducer Haptics Piezo Driver DRV2700 200Vpp, 1000Vp Piezoelectric Actuator Driver Features Discovery Questions Pricing & Availability • • • • • • • • • • • Boost + amplifier mode provides 40-200 VPP Output Flyback mode provides up to 1000Vp Output Boost Converter with Integrated FET & Diode Boost Voltage: 15-105V Adjustable Boost Switch Current Limit (<2.25A) Small-signal bandwidth: 20kHz Stable into capacitive loads (piezo actuators) Fast Start Up Time: 1.5ms Shutdown current: 13mA Thermal Protection 4 mm x 4 mm x 0.9 mm QFN package DRV2700 200Vpp, 1000Vp Piezoelectric Actuator Driver Features Discovery Questions Pricing & Availability • Do you use piezoelectric actuators or transducers? • DRV2700 is the smallest solution for driving piezoelectric actuators up to 200Vpp or 1000Vp • What type of drive (single-ended/unidirectional or differential/bidirectional) and voltage are required? • DRV2700 can provide up to 200Vpp differential (boost+amp mode) or 1000Vp single-ended (flyback mode) • What frequency and load capacitance are required? • DRV2700 supports up to 20kHz output frequency and capacitive loads as high as 4.7mF • Do you have other (non-piezo) needs for high voltage drive or supply in your system? DRV2700 200Vpp, 1000Vp Piezoelectric Actuator Driver Features Discovery Questions Pricing Availability Resources Product Info: DRV2700 Pricing 1Ku: $4.95 (See TI.com for current pricing) Availability: – Silicon: – Samples Now – Full production March 2015 – Evaluation Boards: DRV2700EVM March 2015 – DRV2700EVM-HV500 April 2015 – Software: for EVM, March 2015 – Datasheet: March 2015 – Models: DRV2700 Additional resources: Support: (E2E) Haptics Forum TI Designs: Piezo Sounder Reference Design coming Summer 2015 DRV2700 200Vpp, 1000Vp Piezoelectric Actuator Driver • Why were these parts developed? – To provide a compact solution for driving piezoelectric actuators – To enable customers to use piezoelectric actuators in a wide range of applications where space for electronics is limited and prior solutions were too large – To simplify customers’ development of drive circuitry for piezo actuators • What differentiates this part? – With solution size under 100mm2, it’s < 1/15th the size of comparable discrete solutions. – It’s amplifier is specifically designed for driving capacitive loads – The integrated boost converter can provide up to 105V in boost mode or 1000Vp in flyback mode. – TI’s only single-chip 100V boost converter and 200Vpp amplifier. Who to Sell To… Application Area #1 (Building Automation) Application Area #2 (Positioning/Optics) Application Area #3 (Microfluidics) Example End Equipments • Fire Alarm Sounders • Security Alarm Sounders • User Input Panels • • • • Telescopes Microscopes Stages Semiconductor Equipment • • • • Key Market Differentiators • High Voltage = Loudness • Flat frequency response • Small solution Size • • • • High Voltage Small solution Good linearity Single-ended drive (for some applications) • High Voltage • AC bidirectional drive • Small solution Industrial Inkjet Printing Chemical printer/analyzer Drug delivery Medical Analysis Equipment Call to Action – ePitchPak Quick Exposure for TI’s Products Personalized from You Log in to myti.com or ESP Click on the ePP icon Note: ESP version Online only Select Standard or Your Saved Template Populate and send to your customers for quick exposure to TI’s latest products.