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Toshiba Semiconductor and Storage TLP7920(D4-B,F
- Part No.:
- TLP7920(D4-B,F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLP7920(D4-B,F.pdf
- Description:
- IC OPAMP ISOLATION 1 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:111
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Product details
Overview
TLP7920(D4-B,F) from Toshiba Electronic Devices & Storage Corporation is a galvanically isolated analog amplifier optimized for high-accuracy current sensing in motor drive inverters. It features ±0.5 % gain accuracy (Rank B), 140–230 kHz bandwidth, 15 kV/µs common-mode transient immunity, and operates across –40 to +105 °C - enabling precise rail and phase current monitoring in industrial servo drives.
For engineers reviewing the TLP7920(D4-B,F) datasheet, TLP7920(D4-B,F) pinout, TLP7920(D4-B,F) application, or TLP7920(D4-B,F) equivalent, key selection criteria include isolation voltage rating (5000 VRMS), differential input range (±200 mV), output-side supply compatibility (3.0–5.5 V), and VDE EN IEC 60747-5-5 certification with Option D4.
Technical Context
The TLP7920(D4-B,F) implements optically coupled isolation between input and output stages using an integrated LED-photodiode pair driving a precision amplifier on the output side. Its differential input architecture rejects common-mode noise while maintaining linearity over temperature.
It requires external 0.1 µF bypass capacitors between pins 1–4 (input side) and 5–8 (output side), and supports ±300 mV full-scale input range with selectable gain ranks. The device is rated for 5000 VRMS isolation at 60 s and meets UL, cUL, VDE, and CQC safety standards when configured with Option D4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 5000 VRMS, 60 s - enables safe operation in 690 VAC industrial motor drives with reinforced insulation |
| Gain Accuracy (Rank B) | ±0.5 % - ensures <±1 mV error in ±200 mV input sensing for high-fidelity current feedback |
| Bandwidth (–3 dB) | 140–230 kHz - supports accurate sampling of fast-switching SiC/GaN inverter currents up to 20 kHz PWM |
| CMTI | ≥15 kV/µs - maintains signal integrity during high dv/dt transients in high-power IGBT/SiC modules |
| Operating Temperature | –40 to +105 °C - suitable for under-hood or enclosed industrial drive environments without derating |
| Output Supply Range | 3.0–5.5 V - interoperable with 3.3 V and 5 V microcontroller ADC reference rails |
| Input Offset Drift | 3 µV/°C - limits thermal drift to <0.3 mV over full temperature range, critical for closed-loop stability |
Pinout & Package
Package: Through-hole DIP-8 (TOSHIBA 11-10C4S), 7.62 mm pitch, creepage/clearance ≥7.0 mm, isolation thickness ≥0.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD1) | Input-side supply | Provides power to internal LED and input circuitry; must be decoupled to pin 4 with 0.1 µF capacitor |
| 2 (VIN+) | Differential input positive | Accepts analog voltage from shunt resistor; limited to VDD1 – 2 V to avoid test mode activation |
| 3 (VIN–) | Differential input negative | Reference node for differential sensing; tied to shunt resistor low-side in typical current-sense configuration |
| 4 (GND1) | Input-side ground | Return path for input supply and signal; electrically isolated from output ground (pin 5) |
| 5 (GND2) | Output-side ground | Reference for output amplifier and MCU interface; must be decoupled to pin 8 with 0.1 µF capacitor |
| 6 (VOUT–) | Differential output negative | Complementary output leg; used with VOUT+ for noise-rejecting differential ADC input |
| 7 (VOUT+) | Differential output positive | Main amplified output; provides inverted or non-inverted signal depending on internal configuration |
| 8 (VDD2) | Output-side supply | Powers output amplifier stage; compatible with 3.3 V or 5 V logic domains |
Key Features
| Feature | Design Value |
|---|---|
| VDE EN IEC 60747-5-5 certified | Option D4 ensures compliance with reinforced insulation requirements for industrial safety-critical systems |
| Differential output architecture | Rejects common-mode noise on PCB traces and improves SNR when interfaced with differential-input ADCs |
| ±0.5 % gain tolerance (Rank B) | Eliminates need for per-unit calibration in production, reducing test time and cost in motor control BOMs |
| 15 kV/µs CMTI | Prevents output corruption during fast IGBT switching events in 100 kW+ inverters |
| –40 to +105 °C operation | Enables direct placement near power modules without heatsink or airflow dependency |
Applications
| Industrial Servo Drives | EV Traction Inverters |
|---|---|
Use Scenario: Real-time phase current measurement in 3-phase PMSM servo amplifiers with >20 kHz PWM switching. IC Role / Device Role / Timing Role: Isolated analog front-end amplifier converting shunt voltage to differential output for MCU ADC sampling. Use Value: Enables field-oriented control (FOC) with <1 % current loop error, improving torque ripple and dynamic response. |
Use Scenario: High-side and low-side current sensing in 400 V/800 V battery-powered traction inverters. IC Role / Device Role / Timing Role: Reinforced-isolation amplifier providing fault-tolerant current feedback under high dv/dt conditions. Use Value: Supports ASIL-B functional safety requirements via certified insulation and guaranteed CMTI performance. |
| Solar PV String Inverters | UPS Power Stages |
Use Scenario: DC-link current monitoring in transformerless grid-tied inverters with bipolar voltage stress. IC Role / Device Role / Timing Role: Isolated current sensor interfacing with DSP-based current controllers operating at 16–32 kHz. Use Value: Maintains accuracy despite 1–2 kV/µs transients induced by rapid MOSFET commutation and EMI filters. |
Use Scenario: Bidirectional current sensing in double-conversion online UPS systems with IGBT-based rectifier/inverter stages. IC Role / Device Role / Timing Role: Dual-role isolated amplifier supporting both charging and discharging current measurement paths. Use Value: Reduces component count by eliminating separate isolated sensors for AC and DC sides, lowering BOM cost by ~12 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8920BD-IS | Capacitive isolation; 100 kHz bandwidth; ±0.25 % gain accuracy; no optical aging | Higher reliability in long-life telecom/industrial systems; lower CMTI (10 kV/µs) | Preferred where lifetime stability >50 years is required and bandwidth ≤100 kHz suffices |
| AMC1301DWVR | Capacitive isolation; 200 kHz bandwidth; ±0.2 % gain accuracy; integrated LDO | Single-supply 5 V operation only; no VDE Option D4 certification | Best for new designs targeting TI ecosystem and requiring highest DC accuracy without VDE enforcement |
Compared with Si8920BD-IS and AMC1301DWVR, the TLP7920(D4-B,F) offers VDE-certified reinforced insulation out-of-box, higher CMTI for harsher EMI environments, and through-hole mounting for high-vibration applications - but requires external bypass capacitors and lacks integrated regulation.
Availability
TLP7920(D4-B,F) is available at Aetrix Electronics and suitable for industrial servo drives, EV traction inverters, solar string inverters, and UPS power stages requiring stable component supply with full safety certification traceability.
Supply support for TLP7920(D4-B,F) 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 high-reliability semiconductor components for industrial, automotive, and consumer applications, with core expertise in optoelectronics and power management ICs.
The TLP7920 series belongs to Toshiba's optically isolated amplifier product line, engineered specifically for high-precision current sensing in high-noise, high-voltage motor control and power conversion systems.
FAQ
What safety certifications apply to the TLP7920(D4-B,F)?
The TLP7920(D4-B,F) carries UL 1577 (File E67349), cUL CSA Component Acceptance (File E67349), VDE EN IEC 60747-5-5 and EN IEC 62368-1 certifications - all validated under Option D4. This makes the TLP7920(D4-B,F) suitable for reinforced insulation in industrial equipment requiring compliance with IEC 61800-5-1 and UL 61800-5-1. Certification documentation is available upon request from Aetrix Electronics.
How does the Rank B marking affect TLP7920(D4-B,F) performance?
The "B" in TLP7920(D4-B,F) denotes Gain Rank B, specifying ±0.5 % gain tolerance over temperature and supply voltage variations. This tight tolerance eliminates per-unit gain calibration in production motor drives, directly improving current-loop accuracy and reducing firmware complexity. The TLP7920(D4-B,F) achieves this via factory-trimmed internal resistors and laser trimming during final test.
Can TLP7920(D4-B,F) operate with a 3.3 V output supply?
Yes - the TLP7920(D4-B,F) supports VDD2 from 3.0 V to 5.5 V, making it fully compatible with 3.3 V microcontrollers and ADCs. At 3.3 V, the TLP7920(D4-B,F) delivers full differential output swing (±1.65 V) with 6.2 mA typical supply current, and maintains specified linearity and offset performance across its entire operating temperature range.
Why is a 0.1 µF capacitor required on both input and output sides of TLP7920(D4-B,F)?
The TLP7920(D4-B,F) requires 0.1 µF ceramic bypass capacitors between pins 1–4 (VDD1–GND1) and pins 5–8 (GND2–VDD2) to suppress high-frequency noise coupling into the LED driver and output amplifier. Without them, the TLP7920(D4-B,F) may exhibit output instability, increased offset drift, or failure to meet CMTI specifications - especially in noisy inverter environments with fast switching edges.
What is the difference between TLP7920 and TLP7920F package variants?
The TLP7920 uses a 7.62 mm lead pitch DIP-8 package (11-10C4S), while the TLP7920F uses an 10.16 mm pitch variant (11-10C402S) with larger creepage and clearance (8.0 mm vs. 7.0 mm). The TLP7920(D4-B,F) designation confirms it is the 10.16 mm pitch version with VDE Option D4 certification - essential for higher working voltages and stricter pollution degree requirements in industrial mains-connected equipment.
TLP7920(D4-B,F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 730 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:
- Through Hole
- Supplier Device Package:
- 8-DIP
TLP7920(D4-B,F FAQ
1.How can I place an order for TLP7920(D4-B,F through Aetrix?
Please submit a Request for Quotation (RFQ) for TLP7920(D4-B,F 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 TLP7920(D4-B,F reliable?
The price and inventory of TLP7920(D4-B,F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLP7920(D4-B,F is usually 5 days.
3.What payment methods are accepted for TLP7920(D4-B,F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP7920(D4-B,F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLP7920(D4-B,F?
TLP7920(D4-B,F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLP7920(D4-B,F 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 TLP7920(D4-B,F?
For technical support, including TLP7920(D4-B,F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP7920(D4-B,F requirements.
6.How does Aetrix verify that TLP7920(D4-B,F is sourced from the original manufacturer or authorized distributors?
All TLP7920(D4-B,F 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 TLP7920(D4-B,F meets industry standards.
7.What is the process for return or replacement of TLP7920(D4-B,F?
All TLP7920(D4-B,F units undergo pre-shipment inspection (PSI). If there is an issue with TLP7920(D4-B,F, 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 TLP7920(D4-B,F part is unused and in its original packaging.
Return procedure for TLP7920(D4-B,F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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