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Toshiba Semiconductor and Storage TLP7820(D4-LF4,E
- Part No.:
- TLP7820(D4-LF4,E
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TLP7820(D4-LF4,E.pdf
- Description:
- IC OPAMP ISOLATION 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:135
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Product details
Overview
TLP7820(D4-LF4,E) from Toshiba Electronic Devices & Storage Corporation is a galvanically isolated analog amplifier IC designed for high-accuracy current sensing in motor drive inverters. It provides ±0.5% gain accuracy (Rank B), 230 kHz bandwidth, and 15 kV/µs common-mode transient immunity, operating across –40°C to +105°C with dual 4.5–5.5 V supply rails. It interfaces between shunt resistor voltage drops and MCU ADC inputs in industrial servo and traction inverter systems.
For engineers reviewing the TLP7820(D4-LF4,E) datasheet, TLP7820(D4-LF4,E) pinout, TLP7820(D4-LF4,E) application, or TLP7820(D4-LF4,E) equivalent, key selection criteria include gain rank tolerance, CMTI rating, isolation voltage compliance (5000 Vrms), and EN IEC 60747-5-5 certification under Option D4 for reinforced insulation in safety-critical power electronics.
Technical Context
The TLP7820(D4-LF4,E) uses an optically coupled architecture with integrated LED driver and photodiode-based transimpedance amplifier on the input side, and a precision differential output stage on the isolated output side. Its internal design enforces galvanic separation between VIN+/VIN− and VOUT+/VOUT−, with two independent ground domains (GND1/GND2) and supply rails (VDD1/VDD2).
It operates as a fixed-gain (8.2 V/V typ.), differential-input/differential-output isolation amplifier optimized for ±200 mV full-scale analog signals. The device requires external 0.1 µF bypass capacitors across VDD1–GND1 and VDD2–GND2 per datasheet layout guidance, and supports functional mode only when VIN+ and VIN− remain below VDD1 − 2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Accuracy | ±0.5 % (Rank B): Ensures consistent current measurement scaling across temperature and unit-to-unit variation in motor phase sensing. |
| Bandwidth (−3 dB) | 230 kHz (typ.): Supports accurate capture of fast-switching inverter current waveforms up to ~100 kHz fundamental frequency. |
| CMTI | 15 kV/µs (min.): Maintains signal integrity during high dv/dt transients in 650 V+ IGBT/SiC inverter bridges. |
| Input Offset Voltage | 0.9 mV (typ.): Enables sub-mA resolution in 1 mΩ shunt-based current sensing at ±200 mV input range. |
| Isolation Voltage | 5000 Vrms (60 s): Meets reinforced insulation requirements for industrial drives per UL 1577 and EN IEC 60747-5-5 (Option D4). |
| Operating Temp | −40°C to +105°C: Rated for under-hood and cabinet-mounted inverter control applications without derating. |
| Nonlinearity | 0.02 % (typ., ±200 mV): Limits harmonic distortion in closed-loop torque control feedback paths. |
Pinout & Package
Package: 8-pin DIP (11-6B1A), 2.3 mm max height, 8.0 mm min creepage/clearance, 0.4 mm minimum internal isolation thickness, 0.205 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD1) | Input-side supply | Provides 4.5–5.5 V power to LED driver and input amplifier; must be decoupled to Pin 4 with 0.1 µF capacitor. |
| 2 (VIN+) | Differential input (+) | Accepts shunt voltage signal referenced to GND1; limited to ≤ VDD1 − 2 V to avoid test mode activation. |
| 3 (VIN−) | Differential input (−) | Completes differential input pair; enables rejection of common-mode noise on shunt resistor connections. |
| 4 (GND1) | Input-side ground | Reference return for VDD1 and VIN terminals; electrically isolated from GND2 by internal barrier. |
| 5 (GND2) | Output-side ground | Reference return for VDD2 and VOUT terminals; forms isolated domain for MCU-side signal conditioning. |
| 6 (VOUT−) | Differential output (−) | Delivers inverted amplified output; used with VOUT+ for noise-immune transmission to ADC or instrumentation amplifier. |
| 7 (VOUT+) | Differential output (+) | Delivers non-inverted amplified output; differential swing = 8.2 × (VIN+ − VIN−) with ±0.5% gain tolerance. |
| 8 (VDD2) | Output-side supply | Provides 3–5.5 V power to output amplifier; must be decoupled to Pin 5 with 0.1 µF capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| VDE-certified reinforced insulation | EN IEC 60747-5-5 compliance (Option D4) enables use in safety-rated drive systems without additional barrier components. |
| High CMTI immunity | 15 kV/µs minimum ensures stable operation during rapid bus voltage transitions in SiC-based inverters. |
| Low offset drift | 0.00012 V/V/°C gain drift minimizes calibration drift over temperature in uncooled control cabinets. |
| Dual-domain supply support | Independent VDD1 (4.5–5.5 V) and VDD2 (3–5.5 V) rails allow interfacing with 5 V logic and 3.3 V MCU ADCs simultaneously. |
| Factory-trimmed gain ranks | Rank B (±0.5%) option enables single-point calibration in production, reducing factory test time vs. unranked variants. |
Applications
| Motor Phase Current Sensing | Rail Voltage Monitoring |
|---|---|
Use Scenario: Real-time measurement of individual phase currents in 3-phase PMSM or induction motor drives using low-value shunt resistors. IC Role / Device Role / Timing Role: Isolated analog amplifier converting mV-level shunt voltage into scaled differential output for MCU ADC sampling. Use Value: Enables field-oriented control (FOC) with <0.1% current loop error budget, supporting >20 kHz PWM switching without aliasing. | Use Scenario: Monitoring DC-link voltage in IGBT/SiC inverter stages where high common-mode transients occur during switching. IC Role / Device Role / Timing Role: High-CMTI isolated amplifier capturing rail voltage via resistive divider, rejecting fast dv/dt noise. Use Value: Provides accurate overvoltage protection triggering within 1 µs response window, preventing IGBT desaturation faults. |
| Power Inverter Current Sensing | Industrial Servo Drive Feedback |
Use Scenario: Bidirectional current sensing in H-bridge or 6-pack inverter modules for regenerative braking and torque control. IC Role / Device Role / Timing Role: Differential-input isolation amplifier delivering bipolar output proportional to bidirectional shunt voltage. Use Value: Supports precise zero-crossing detection and energy recovery calculation with <0.02% nonlinearity over full ±200 mV range. | Use Scenario: Closed-loop current feedback in CNC machine servo amplifiers requiring long-term stability and EMC robustness. IC Role / Device Role / Timing Role: Reinforced-insulation analog coupler linking motor current sense path to FPGA-based motion controller. Use Value: Eliminates ground loops and meets EN 61800-3 emission limits while maintaining <1 µV/°C offset stability over 10-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACPL-C79B-000E | Lower CMTI (10 kV/µs), ±1% gain accuracy (Rank 1), SO-8 package | Suitable for lower-speed AC drives but not SiC inverter designs requiring >12 kV/µs immunity | Select when cost sensitivity outweighs CMTI and gain tolerance requirements. |
| ISO124P | Capacitive isolation, 100 kHz bandwidth, ±0.05% gain error, DIP-8 package | Higher precision but lacks safety certification for reinforced insulation; requires external barrier validation | Choose only for lab-grade test equipment where certification is not mandated. |
Compared with ACPL-C79B-000E and ISO124P, the TLP7820(D4-LF4,E) uniquely combines VDE-reinforced insulation (Option D4), 15 kV/µs CMTI, and ±0.5% gain accuracy in a standard DIP-8 footprint-making it the only drop-in solution for IEC 61800-5-1 compliant industrial inverters requiring no layout redesign.
Availability
TLP7820(D4-LF4,E) is available at Aetrix Electronics and suitable for motor phase current sensing, power inverter current sensing, and industrial servo drive feedback requiring stable component supply and long-term lifecycle assurance.
Supply support for TLP7820(D4-LF4,E) includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and optoelectronics for industrial, automotive, and consumer applications.
The TLP7820 series belongs to Toshiba's optically isolated amplifier product line, engineered specifically for high-fidelity current and voltage sensing in high-noise, high-voltage motor control systems.
FAQ
What safety certifications apply to the TLP7820(D4-LF4,E)?
The TLP7820(D4-LF4,E) carries UL 1577 recognition (File E67349), cUL CSA Component Acceptance (File E67349), VDE approval to EN IEC 60747-5-5 and EN IEC 62368-1, and CQC GB4943.1 certification. The "D4" suffix explicitly denotes qualification to EN IEC 60747-5-5 Option D4 for reinforced insulation, verified per the manufacturer's test report Rev.10.0.
Does the TLP7820(D4-LF4,E) require external bypass capacitors?
Yes-the TLP7820(D4-LF4,E) requires two 0.1 µF ceramic capacitors: one between Pin 1 (VDD1) and Pin 4 (GND1), and another between Pin 5 (GND2) and Pin 8 (VDD2). These are mandatory for stable operation; omission causes improper switching behavior and violates the manufacturer's recommended operating conditions in Section 5 and Note 2 of Section 7.
What is the meaning of "(D4-LF4,E)" in the TLP7820(D4-LF4,E) part number?
The suffix "(D4-LF4,E)" specifies three attributes: D4 indicates EN IEC 60747-5-5 Option D4 qualification; LF4 denotes lead-free (Pb-free) termination per JEDEC J-STD-020; and E signifies RoHS-compliant packaging. This exact variant is documented in Toshiba's Rev.10.0 datasheet as the certified version for safety-critical industrial drives.
Can the TLP7820(D4-LF4,E) interface directly with a 3.3 V microcontroller ADC?
Yes-the TLP7820(D4-LF4,E) supports VDD2 from 3 V to 5.5 V and delivers a differential output (VOUT+/VOUT−) with typical swing of ±1.64 V around VDD2/2. When powered by 3.3 V, its output remains fully compatible with 3.3 V SAR or delta-sigma ADCs requiring differential input ranges up to ±1.65 V, provided proper level-shifting or termination is applied per the datasheet's Figure 12.8.
How does gain rank affect the TLP7820(D4-LF4,E) performance in production calibration?
The "B" in TLP7820(D4-LF4,E) denotes Gain Rank B (±0.5% accuracy), which reduces post-manufacturing calibration effort versus unranked (±3%) or Rank A (±1%) variants. At 25°C, its gain is guaranteed between 8.16 V/V and 8.24 V/V, enabling single-point system calibration instead of multi-point curve fitting-directly lowering test time and cost in high-volume motor drive assembly.
TLP7820(D4-LF4,E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Isolation
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 230 kHz
- Current - Input Bias:
- 5.5 nA
- Voltage - Input Offset:
- 900 µV
- Current - Supply:
- 12mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TLP7820(D4-LF4,E FAQ
1.How can I place an order for TLP7820(D4-LF4,E through Aetrix?
Please submit a Request for Quotation (RFQ) for TLP7820(D4-LF4,E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLP7820(D4-LF4,E reliable?
The price and inventory of TLP7820(D4-LF4,E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLP7820(D4-LF4,E is usually 5 days.
3.What payment methods are accepted for TLP7820(D4-LF4,E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP7820(D4-LF4,E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLP7820(D4-LF4,E?
TLP7820(D4-LF4,E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLP7820(D4-LF4,E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLP7820(D4-LF4,E?
For technical support, including TLP7820(D4-LF4,E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP7820(D4-LF4,E requirements.
6.How does Aetrix verify that TLP7820(D4-LF4,E is sourced from the original manufacturer or authorized distributors?
All TLP7820(D4-LF4,E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLP7820(D4-LF4,E meets industry standards.
7.What is the process for return or replacement of TLP7820(D4-LF4,E?
All TLP7820(D4-LF4,E units undergo pre-shipment inspection (PSI). If there is an issue with TLP7820(D4-LF4,E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLP7820(D4-LF4,E part is unused and in its original packaging.
Return procedure for TLP7820(D4-LF4,E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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