TLP7920(D4-TP1 - 5kVrms Isolation Amplifier | Toshiba
MPN： TLP7920(D4-TP1 ✓ 啟用中TLP7920(D4-TP1 概覽
An isolation amplifier is a signal-conditioning semiconductor that transfers a low-voltage analog measurement across a galvanically isolated barrier while electrically separating the input side from the output side. Within the product hierarchy, the TLP7920 is an optically isolated isolation amplifier, a specialized interface IC used for motor phase current sensing, inverter voltage sensing, and other systems requiring reinforced signal isolation.
The verified product information identifies one isolation-amplifier circuit, an analog output, 5000 Vrms isolation, and an 8-SMD gull-wing package. The D4 ordering option is associated with qualification to option D4 of EN IEC 60747-5-5, as stated in the Toshiba TLP7920 and TLP7920F datasheet. This qualification information makes the part relevant to industrial power-conversion equipment where isolation requirements and component pedigree are important.
The TLP7920 family is intended for electronic motor drives. In a typical implementation, motor current passes through an external resistor, and the resulting analog voltage drop is presented to the isolated input side. The device reconstructs a corresponding signal on the output side, allowing a controller to monitor phase current without creating a conductive connection between the high-side power stage and the control electronics.
Typical uses include three-phase motor inverters, industrial motor-control systems, power-factor-correction converters, and inverter current monitoring. Its principal benefit is the combination of analog signal transfer and 5000 Vrms galvanic isolation. Compared with an ordinary differential amplifier, it can place the sensing front end directly across a shunt in a high-side or floating power stage while protecting the controller from that high-side voltage.
Designers should verify the complete ordering code, package drawing, isolation rating, input range, output range, accuracy, bandwidth, and recommended shunt-resistor network against the current Toshiba datasheet before release. The verified search excerpts confirm the electrical role and isolation class but do not provide all numerical performance limits, so unsupported values should not be inferred.
This page consolidates manufacturer qualification information, distributor availability, package details, application context, and honest cross-reference findings. Unlike a generic distributor listing, it also distinguishes verified drop-in replacements from mechanically similar but non-pin-compatible TLP7920 ordering variants.
直接替換替代品，適用於 TLP7920(D4-TP1 — 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。
TLP7920(D4-TP1,F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920(D4-TP1 最大額定值與電氣特性
| Product Type | Optically isolated isolation amplifier |
| Isolation Amplifier Circuits | 1 circuit |
| 輸出類型 | Analog output |
| Isolation Voltage | 5000 Vrms |
| 封裝 | 8-SMD gull-wing package |
| Terminal Count | 8 terminals |
| Package Family | SOP surface-mount family |
| 安裝類型 | Surface mount |
| Primary Function | Electronic motor-drive current sensing |
| Input Sensing Method | Voltage drop across an external shunt resistor |
| Qualification Option | Option D4 of EN IEC 60747-5-5 |
| Isolation Technology | Optocoupler-based |
TLP7920(D4-TP1 sop surface-mount family 腳位配置指南
TLP7920(D4-TP1（sop surface-mount family 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： TLP7920(D4-TP1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLP7920(D4-TP1 適用於 6 應用s: Three-Phase Motor Inverter Current Sensing, Power-Inverter Phase Monitoring, Industrial Servo-Drive Feedback, Power-Factor-Correction Converter, Inverter Voltage Sensing, High-Voltage Industrial Control Interface.
Three-Phase Motor Inverter Current Sensing
The TLP7920 (D4-TP1 fits motor-inverter phase-current monitoring because Toshiba identifies the device as an isolation amplifier for current sensing in electronic motor drives. A shunt resistor converts phase current into an analog voltage, and the isolation amplifier transfers that measurement across the 5000 Vrms barrier while keeping the high-side power node electrically separate from the controller. The 8-SMD gull-wing package also supports compact power-conversion layouts, provided the footprint matches the selected PCB. Designers should verify the manufacturer’s input range, gain, accuracy, bandwidth, and timing limits for the required PWM current-feedback bandwidth.
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Power-Inverter Phase Monitoring
The TLP7920 (D4-TP1 is applicable when a power inverter needs isolated feedback from a shunt located in a switching or floating power stage. Its optically isolated analog architecture prevents a direct conductive path between the sensed voltage and the low-voltage control domain, while the verified 5000 Vrms isolation supports high-voltage barrier design. The external shunt and device input network remain central to measurement accuracy, so the shunt value, Kelvin routing, common-mode behavior, and filtering should be calculated against the current Toshiba datasheet before layout release.
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Industrial Servo-Drive Feedback
The TLP7920 (D4-TP1 is suitable for isolated current feedback in industrial servo and motor-control equipment when the controller must remain separated from a high-side phase node. Toshiba specifically describes sensing the analog voltage generated by current flowing through an external motor-phase shunt. With one analog-output isolation channel and a verified 5000 Vrms barrier, the part supports systems where accurate current feedback, reinforced isolation, and compact SMD construction are required. Timing and bandwidth must specifically cover the control loop without requiring board changes.
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Power-Factor-Correction Converter
The TLP7920 (D4-TP1 can be evaluated for isolated current sensing in power-factor-correction converters that monitor inductor or switch current through an external shunt. The analog output provides a conditioned measurement to the controller, while optical isolation helps establish a safe separation between the power stage and control circuitry. The verified 5000 Vrms isolation and 8-SMD package are useful for compact designs, but designers must confirm the permitted common-mode input range, propagation delay, gain tolerance, and bandwidth against the converter’s switching frequency.
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Inverter Voltage Sensing
The TLP7920 (D4-TP1 can participate in isolated voltage-sensing subsystems within inverters when the sensing element produces a voltage proportional to the quantity being measured. Toshiba’s product family is explicitly associated with motor phase current and voltage sensing, and the D4 option provides a documented EN IEC 60747-5-5 qualification path. The application must still observe the manufacturer’s input limits, isolation working voltage, creepage, clearance, and common-mode restrictions. Any external divider or shunt network should be positioned to preserve signal quality and satisfy the board’s isolation geometry.
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High-Voltage Industrial Control Interface
The TLP7920 (D4-TP1 can be used as the isolation element between a high-voltage sensing network and a low-voltage industrial controller. Its optically isolated, analog-output structure avoids a galvanic connection between the two domains, while the verified 5000 Vrms rating provides the basis for barrier design. The eight-terminal SMD package simplifies assembly, but the complete safety solution also depends on PCB creepage and clearance, insulation coordination, working voltage, component placement, and applicable system standards. These values must come from the current Toshiba documentation.
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推薦產品摘要
工程參考資料，適用於 TLP7920(D4-TP1 — 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 |
|---|---|
| Brand | Toshiba Semiconductor and Storage |
| Package | 8-SMD gull-wing package |
| Isolation Amplifier Circuits | 1 circuit |
| Output Type | Analog output |
| Isolation Voltage | 5000 Vrms |
| Primary Application | Motor-drive current sensing |
| Qualification Option | Option D4 of EN IEC 60747-5-5 |
| Verified Reference Price | $1.8297 as of 2026-10-28 |
主要差異化特點
- Verified 5000 Vrms isolation rating (對比TLP7920 (D4-LF1,F)
- SMD gull-wing package matches compact SMD layouts (對比TLP7920 (D4-A,F)
- Purpose-built electronic motor-drive sensing (對比TLP7920 (D4-LF1,F)
- Documented D4 qualification option (對比TLP7920 (F)
設計說明
Treat the isolation barrier as a layout constraint, not only a component choice. The input-side shunt or divider network must terminate at the TLP7920 sensing pins without copper paths that bridge the isolation boundary. Maintain the package-specific creepage, clearance, pad spacing, and copper keepout dimensions specified in the current Toshiba datasheet and applicable insulation-coordination rules. Do not route high-voltage switching-node copper beneath the isolation gap, and verify that test points and tooling do not unintentionally reduce the barrier.
Do not infer the pinout or electrical limits from the generic eight-terminal SMD package. The verified sources establish the package and isolation function but do not expose the complete manufacturer pin table. Download the current TLP7920 datasheet and confirm input polarity, supply pins, output definition, output common-mode voltage, recommended input network, allowable input range, and bypass requirements before schematic capture. Incorrectly assigning an output or supply pin can prevent operation or damage the isolation amplifier.
Keep the shunt or divider connection to the isolated input side short and route it as a differential or tightly referenced analog signal where the device supports that arrangement. Place any recommended input filtering and bypass components at the pins specified by Toshiba rather than far from the package. Account for propagation delay, bandwidth, gain error, and common-mode transient energy when setting control-loop timing. These operating limits are not present in the supplied excerpts and must be taken from the manufacturer datasheet.
The isolated amplifier requires correctly identified supply connections and suitable bypassing, but the supplied search data does not state its supply voltage or quiescent current. Use the current manufacturer document to determine supply sequencing, output load capability, decoupling capacitance, and startup behavior. Do not assume that the isolated output can directly drive an ADC input; verify output range and drive strength, and add an appropriate interface buffer or amplifier when the system requirements exceed the available output capability.
合規資訊
The manufacturer datasheet result states that option D4 is qualified according to option D4 of EN IEC 60747-5-5. No verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration was supplied.
