String inverter
Products and reference designs
String inverter
Overview
Our integrated circuits and reference designs help you accelerate development of solar string inverters, improving power density and efficiency while providing real-time communication and monitoring.
Design requirements
- Long-system lifespan.
- Low-output distortion.
- Accurate analog measurement of voltage and current.
- High efficiency and power density.
String inverter designs require innovative technology to achieve:
Extend the capabilities of this application
Block diagram
Find products and reference designs for your system.
Three Phase String Inverter
Input current & voltage sense
Isolation (8)
Isolated amplifiers
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AMC0311S—Precision 2V-input reinforced isolated amplifier with fixed gain, single-ended output
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AMC1300—±250-mV input, precision current sensing reinforced isolated amplifier
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AMC1301—±250 mV-Input Precision Reinforced Isolated Amplifier for Current Sensing
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AMC1311—2-V input, precision voltage sensing reinforced isolated amplifier
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AMC1200—±250-mV input, precision current sensing basic isolated amplifier
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AMC1411—2-V input, precision voltage sensing reinforced isolated amplifier with high CMTI
Isolated ADCs
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AMC1304M25—±250-mV input, precision current sensing reinforced isolated modulator with LDO
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AMC3306M05—±50-mV input, precision current sensing reinforced isolated modulator with integrated DC/DC
Amplifiers (18)
General-purpose op amps
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TL074H—Quad, 40-V, 5-MHz, 4-mV offset voltage, 20-V/µs, In to V+ op amp with -40°C to 125°C operation
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TLV9004—Quad, 5.5-V, 1-MHz, RRIO operational amplifier for cost-optimized applications
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TLV9061—Single, 5.5-V, 10-MHz, RRIO operational amplifier for cost-optimized applications
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OPA310—Single, 5.5-V, 3-MHz high-output-current (150 mA) fast-shutdown (1 μs) operational amplifier
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TLV9302—Dual, 40-V, 1-MHz, low-power operational amplifier
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TLV9064—Quad, 5.5-V, 10-MHz, RRIO operational amplifier for cost-optimized applications
Precision op amps (Vos<1mV)
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OPA2392—Dual, low-offset (10μV), low-noise (4.4nV/rtHz @10kHz) femtoamp-bias-current e-trim™ op amp
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OPA2189—Dual, 14-MHz, MUX-friendly, low-noise, zero-drift, RRO, CMOS precision operational amplifier
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OPA2188—0.03µV/°C, 6µV Vos, Low Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier
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OPA2180—0.1 uV/°C DRIFT, Low Noise, Rail-to-Rail Output, 36V Zero-Drift Op Amp
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OPA2320—Dual, precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier
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TLV4376—Quad 5.5-MHz, 100-µV offset, 8-nV/√Hz noise, 815-µA power, precision operational amplifiers
Comparators
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LM2901B—36-V, quad differential standard comparator
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LM393LV—'1.65-V to 5.5-V, low-voltage dual commodity comparator
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TLV7011—Low power, small size comparator with push-pull output
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LM2903B—Dual industrial grade standard comparator
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LM339B—36-V, -40°C to 85°C quad standard comparator
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TLV1851—Single nanopower high-voltage comparator with push-pull output
Sensors (4)
Hall-effect current sensors
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TMCS1126—80ARMS 500kHz Hall-effect current sensor with AFR, reference and ALERT
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TMCS1126-Q1—AEC-Q100 qualified 80ARMS 500kHz Hall-effect current sensor with AFR, reference and ALERT
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TMCS1133—80ARMS 1MHz Hall-effect current sensor with AFR and ALERT
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TMCS1123—±1300V reinforced isolation, 80ARMS 250kHz Hall-effect current sensor with AFR, reference and ALERT
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TIDA-00912—Shunt-Based High Current Measurement (200-A) Reference Design with Reinforced Isolation Amplifier
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TIDA-010938—10kW, GaN-based single-phase string inverter with battery energy storage system reference design
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TIDA-01541—High-Bandwidth Phase Current and DC-Link Voltage Sensing Reference Design for Three-Phase Inverters
Technical article
Application brief
Application note
Hardware development
Evaluation board
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AMC3302EVM — AMC3302 evaluation module for ±50-mV-input precision reinforced isolated amplifier
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AMC3306EVM — AMC3306 precision reinforced isolated modulator with integrated DC/DC converter evaluation module
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AMC1302EVM — AMC1302 evaluation module for ±50-mV-input, high-precision, reinforced isolated amplifier
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AMC1306EVM — AMC1306 small reinforced isolated modulator evaluation module
Technical documentation
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