TLP7820(B-TP4 - 5kVrms Isolation Amplifier | Toshiba
MPN： TLP7820(B-TP4 ✓ 啟用中TLP7820(B-TP4 概覽
An isolation amplifier is an optically isolated signal-conditioning IC that transfers a voltage or current-related measurement across an electrical barrier while electrically separating high-power circuitry from the measurement domain. Its internal isolation barrier helps protect low-voltage control and sensing electronics from high common-mode voltages. The TLP7820 family is associated with motor phase-current, inverter-current, and voltage-sensing applications.
The verified Toshiba product listing identifies TLP7820(B-TP4 as an isolation amplifier with an analog output and 5,000 Vrms isolation capability. The family is packaged in SO8L (LF4), while distributor and comparison listings describe an 8-pin SO/SOIC-style package. The device is therefore positioned for isolated current-measurement circuits rather than ordinary non-isolated operational-amplifier applications.
Because the supplied sources do not provide the complete electrical characteristic table, input common-mode range, gain error, bandwidth, propagation delay, supply-current limits, or exact pin names, those values must be confirmed in the manufacturer datasheet before layout or qualification. This page does not infer unverified numerical specifications. The available evidence supports the device category, isolation rating, analog-output architecture, package family, and target sensing applications.
Typical implementation places the TLP7820 across a current-sense shunt or inverter phase-current sensing path. Its isolation barrier allows measurement information to cross from the power stage toward a controller while maintaining galvanic separation. Designers should verify the complete recommended shunt, input filter, supply, output, and grounding configuration in the Toshiba datasheet and evaluate the external resistor network for the intended current range.
Design emphasis belongs on barrier isolation, common-mode voltage limits, input-referenced filtering, output scaling, and PCB creepage. The SO8L package should be placed with adequate isolation clearance and a defined high-voltage barrier; copper, slots, and grounded structures must not unintentionally reduce the rated isolation distance. The manufacturer datasheet is the controlling source for layout dimensions and safety requirements.
This page consolidates verified manufacturer and distributor information, distinguishes documented facts from missing parameters, and provides application and sourcing guidance. It is intended to help engineers identify the correct isolation-amplifier family and obtain the authoritative Toshiba datasheet before committing to a PCB design.
直接替換替代品，適用於 TLP7820(B-TP4 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品TLP7820(B-TP4 最大額定值與電氣特性
| Product Type | Photocoupler-type isolation amplifier |
| Isolation Amplifier Circuit Count | 1 circuit |
| 輸出類型 | Analog |
| Isolation Voltage | 5000 Vrms |
| Nominal Supply Voltage | 5 V |
| 封裝 | SO8L (LF4), 8-pin SO/SOIC-style package |
| 安裝類型 | Surface Mount |
| Primary Application | Motor phase-current sensing |
| Additional Applications | Inverter current and voltage sensing |
| Signal Transfer Method | Photocoupler isolation |
TLP7820(B-TP4 so8l (lf4), 8-pin so/soic-style package 腳位配置指南
TLP7820(B-TP4（so8l (lf4), 8-pin so/soic-style package 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TLP7820(B-TP4.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLP7820(B-TP4 適用於 6 應用s: Motor Phase-Current Sensing, Inverter Current Monitoring, Industrial Motor Control, Power-Supply Current Feedback, High-Side Shunt Measurement, Industrial Automation Signal Isolation.
Motor Phase-Current Sensing
TLP7820(B-TP4 fits motor-drive current measurement because Toshiba identifies the TLP7820 family for motor phase-current sensing and provides a 5,000 Vrms isolation amplifier with analog output. Place the isolation amplifier in the phase-current signal path so the measurement can cross from the power domain toward the controller domain. The verified data does not specify the full input common-mode range, gain error, or bandwidth, so shunt sizing and filtering must be completed from the manufacturer datasheet. Confirm the SO8L/LF4 footprint and preserve the isolation barrier during PCB layout.
推薦
Inverter Current Monitoring
The TLP7820(B-TP4 is suitable for inverter current monitoring when the design requires analog isolated signal transfer and a verified 5,000 Vrms isolation capability. The device can bridge a current-sense measurement in the switching stage to a controller or monitoring circuit while maintaining electrical separation. Its one-channel photocoupler-type architecture makes it relevant to phase or leg current feedback. Because the supplied data omits input range, propagation delay, and bandwidth, the inverter switching frequency must be checked against the full Toshiba datasheet before committing to the design.
推薦
Industrial Motor Control
Use TLP7820(B-TP4 as an isolated measurement interface in an industrial motor-control system where the sensed current originates in a high-voltage or high-switching-noise environment. The documented analog output and isolation amplifier category support conditioning a shunt-derived voltage for a controller input. The designer should select input filtering appropriate to the motor-control bandwidth, maintain the manufacturer-recommended supply arrangement, and route the isolation barrier according to the SO8L/LF4 land pattern. Verify EMC, thermal, and safety requirements in the complete system design.
推薦
Power-Supply Current Feedback
TLP7820(B-TP4 can support isolated current feedback when a power-conversion stage uses a shunt or other current-derived voltage and the system requires a protected measurement interface. Its verified analog-output isolation-amplifier function and 5,000 Vrms isolation rating make it relevant to power-monitor designs, although the supplied sources do not establish every input and timing limit. Check the exact sense-node voltage range, output scaling, and isolation requirements against the Toshiba datasheet. Keep the high-current loop and the low-level measurement return path separated on the PCB.
推薦
High-Side Shunt Measurement
The TLP7820(B-TP4 is a candidate for isolated high-side shunt measurement in inverter and motor-drive circuits where the shunt voltage must be transferred across a safety or ground barrier. The device’s verified isolation rating and analog output support this use case, but suitability depends on the actual shunt common-mode voltage, input impedance, gain, offset, and timing. Use the manufacturer’s recommended input network and pin definitions to avoid saturating the measurement channel. Confirm that the package creepage and clearance meet the system’s isolation category before release to production.
推薦
Industrial Automation Signal Isolation
TLP7820(B-TP4 can serve as an isolated analog measurement front end in industrial automation equipment where a process or drive current must be monitored by a lower-voltage controller. The one-channel analog-output architecture allows the measured quantity to be transferred across a photocoupler barrier, helping isolate the controller from the sensed power circuit. The verified sources do not specify offset, noise, bandwidth, or operating-temperature values, so the design team should review the complete Toshiba datasheet. Validate calibration, fault detection, and grounding in the final control system.
推薦
推薦產品摘要
工程參考資料，適用於 TLP7820(B-TP4 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Product Type | Photocoupler-type isolation amplifier |
| Isolation Voltage | 5000 Vrms |
| Output Type | Analog |
| Circuit Count | 1 circuit |
| Package | SO8L (LF4), 8-pin SO/SOIC-style package |
| Nominal Supply Voltage | 5 V |
| Primary Application | Motor phase-current sensing |
| Additional Applications | Inverter current and voltage sensing |
| Signal Isolation Method | Photocoupler isolation |
| Manufacturer | Toshiba |
主要差異化特點
- Purpose-built isolation-amplifier positioning (對比TLP7820(TP4,E)
- Motor-drive current-sense use case (對比TLP7820(B,E)
- Verified isolation rating (對比Generic non-isolated signal-conditioning devices)
設計說明
Treat the TLP7820 isolation amplifier barrier as a layout boundary. Keep the high-side sensing conductors and low-side output/control circuitry separated according to the Toshiba package drawing and the applicable creepage and clearance requirements. Do not route unrelated signals, ground copper, or test pads across the barrier unless the manufacturer explicitly permits them. Before release, inspect the assembled PCB for copper bridges and confirm the final isolation geometry under the system operating conditions.
Place input-filter components and the current-sense return connection close to the relevant TLP7820 pins, and keep the analog output routing away from motor-switching nodes and high-current loops. The supplied sources do not provide bandwidth, propagation delay, input impedance, or noise specifications, so the filter and settling requirements must be derived from the complete Toshiba datasheet and the motor-drive switching conditions. Validate the sensing channel with the final shunt, layout, and control algorithm.
Do not assume that every TLP7820 ordering code is an exact drop-in substitute. The verified search data mentions TLP7820(TP4,E and TLP7820(B,E alongside TLP7820(B-TP4, but the snippets do not establish identical pinout, qualification, package marking, or lifecycle terms. Compare the official ordering table and datasheet before substitution. Also do not infer RoHS, REACH, AEC-Q100, or lead-free status from distributor category labels alone.
Verify the TLP7820 supply arrangement, component tolerances, external shunt value, and input filtering against the manufacturer’s recommended current-sense circuit. The verified data supplies a nominal 5 V description and a 5,000 Vrms isolation rating, but it does not provide supply-current limits, input common-mode range, gain error, or output-drive limits. Use those parameters to set the analog headroom and ensure the controller input remains within its valid range across temperature and fault conditions.
合規資訊
The supplied search snippets mention RoHS-related product details but do not explicitly provide verified exact-MPN RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. EN IEC 60747-5-5 Option (D4) appears in a Toshiba document-search result, but the exact qualification applicability to TLP7820(B-TP4 requires review of the manufacturer document.
