TLP7920(D4-B - 5 kVrms Isolation Amplifier | Toshiba
MPN： TLP7920(D4-B ✓ 啟用中TLP7920(D4-B 概覽
An isolation amplifier is a signal-conditioning IC that combines an input-side sensor interface, optical or other barrier-isolated signal path, and an isolated analog output. Within the broader hierarchy, the TLP7920 belongs to the isolation-amplifier and optocoupler families of analog and interface semiconductors. Its primary role is to preserve signal integrity while providing current sensing for motor phase conductors, inverter systems, and other power-conversion equipment.
The verified manufacturer listing specifies analog output, 5000 Vrms isolation, and D4 qualification wording associated with EN IEC 60747-5-5. The Mouser result also identifies gain rank B, VDE approval, and an 8-DIP package. These attributes make the part suitable where a protected measurement path is required between a high-current power circuit and a controller or monitoring system. The exact input range, gain error, bandwidth, supply requirements, output levels, and temperature limits are not included in the supplied verified data and must be confirmed in the manufacturer datasheet before design release.
Typical applications include motor phase-current sensing, inverter current sensing, voltage sensing through an external resistor, power-supply feedback, and isolated analog monitoring. In a motor-drive implementation, a shunt resistor produces a voltage proportional to current, and the TLP7920 transfers that measurement through the isolation barrier to a control system. The analog output allows the receiving controller to process the current information without a direct high-voltage connection.
PCB design should preserve the isolation barrier and provide adequate copper clearance and creepage around the package. The through-hole 8-DIP format supports conventional through-hole assembly, while the input and output return paths must remain separated according to the datasheet layout guidance. Do not assume that identical pin numbering or package geometry alone guarantees regulatory compliance; the final system must be checked against its applicable safety standard.
This page consolidates manufacturer identification, distributor availability, qualification references, application context, and verified cross-reference information. Numerical parameters absent from the supplied sources are intentionally marked for datasheet confirmation rather than inferred.
直接替換替代品，適用於 TLP7920(D4-B — 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。
此系列的變體
與下列產品可直接替換的同系列型號： TLP7920(D4-B （相同外形與佔位） — 差異在於 Package, Primary Application, Product Type.
TLP7920(D4
✅ 直接替換聯絡詢價
查看資料表 →TLP7920(D4-B,F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920(D4-A,F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920(D4-B 最大額定值與電氣特性
| Product Type | Optically isolated isolation amplifier |
| Isolation Voltage | 5000 Vrms |
| 輸出類型 | Analog output |
| Circuit Count | 1 circuit |
| 輸出配置 | Differential output |
| Gain Rank | B |
| 封裝 | 8-DIP |
| Package Body Width | 0.300 in (7.62 mm) |
| 安裝類型 | Through hole |
| Qualification | D4 option; EN IEC 60747-5-5 wording |
| Primary Application | Motor phase current and voltage sensing |
| Signal Transfer | Optical isolation |
TLP7920(D4-B 0.300 in (7.62 mm) 腳位配置指南
TLP7920(D4-B（0.300 in (7.62 mm) 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-B.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLP7920(D4-B 適用於 6 應用s: Motor Phase-Current Sensing, Inverter Current Monitoring, Isolated Voltage Sensing, Power-Supply Feedback, Industrial Sensor Interface, Bidirectional DC-Link Protection.
Motor Phase-Current Sensing
The TLP7920(D4-B fits motor phase-current sensing because Toshiba identifies the device for electronic motor drives and current sensing through an external resistor. A shunt resistor converts phase current into a differential voltage, while the isolation amplifier transfers that measurement across a 5000 Vrms-rated barrier. The receiving controller can process the analog signal without a direct connection to the high-current conductor. The verified data does not specify input range, gain, bandwidth, or propagation delay, so the shunt value and control-loop requirements must be checked against the Toshiba datasheet before release.
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Inverter Current Monitoring
The TLP7920(D4-B is appropriate for inverter current monitoring where the controller must observe a power-conversion node across an isolation boundary. Toshiba specifically lists inverter current and voltage sensing as application areas. Place the sensing element in the appropriate power path, route the isolated measurement through the TLP7920(D4-B, and keep the output-side circuitry referenced to the controller ground. The 5000 Vrms isolation rating provides the device-family protection basis, while the final creepage, clearance, working voltage, and safety qualification remain system-level requirements.
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Isolated Voltage Sensing
The analog differential output and optically isolated signal path make the TLP7920(D4-B suitable for isolated voltage sensing when a resistive divider or shunt creates a suitably scaled input voltage. This arrangement supports feedback and protection monitoring in power systems while separating the sensed domain from the control domain. The exact input voltage range and gain error are not present in the supplied verified data, so resistor ratios, surge margin, and calibration must be based on the manufacturer datasheet rather than estimated from the 5000 Vrms isolation value.
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Power-Supply Feedback
The TLP7920(D4-B can be used when a power converter requires an analog measurement transferred across an isolation barrier. A scaled voltage from the output or power stage can be sent to the TLP7920(D4-B, allowing the secondary-side or controller-side electronics to monitor the operating condition without a galvanic connection to the power conductor. The through-hole 8-DIP package supports conventional PCB assembly, but the analog input and output networks must be selected from the datasheet’s electrical limits. The verified data does not state bandwidth or supply current.
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Industrial Sensor Interface
The TLP7920(D4-B is useful as an isolated front end for industrial sensors that produce small differential analog signals in a high-voltage or electrically noisy environment. Optical isolation reduces the need for a direct ground connection between the sensor domain and downstream instrumentation, while the analog output preserves a conventional signal-processing interface. The 5000 Vrms isolation rating is the principal verified protection-related parameter. Engineer must still verify input common-mode limits, gain rank, temperature performance, and safety requirements in the Toshiba documentation.
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Bidirectional DC-Link Protection
The TLP7920(D4-B can support protection feedback in systems where a bidirectional current or voltage condition must be observed across an isolated boundary. Its analog differential output is compatible with downstream comparator, amplifier, or controller circuitry when the input signal is properly scaled. Because the supplied data does not identify the exact input range, output swing, propagation delay, or common-mode performance, protection thresholds must not be assumed. Validate the complete sensing chain against the Toshiba datasheet and the system’s switching conditions.
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推薦產品摘要
工程參考資料，適用於 TLP7920(D4-B — 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 | TLP7920(D4 | TLP7920(D4-B,F | TLP7920(D4-A,F | TLP7920 | TLP7920F |
|---|---|---|---|---|---|---|
| Package | 8-DIP (0.300 in, 7.62 mm) | 8-DIP (0.300 in, 7.62 mm) | 8-DIP (0.300 in, 7.62 mm) | 8-DIP (0.300 in, 7.62 mm) | 8-DIP | 8-DIP |
| Brand | Toshiba | Toshiba | Toshiba | Toshiba | Toshiba | Toshiba |
| Output Type | Analog differential output | Analog output | Analog output | Analog output | Analog output | Analog output |
| Circuit Count | 1 circuit | 1 circuit | 1 circuit | 1 circuit | 1 circuit | 1 circuit |
| Primary Application | Motor phase current and voltage sensing | Motor current and voltage sensing | Motor current and voltage sensing | Motor current and voltage sensing | Motor current and voltage sensing | Motor current and voltage sensing |
主要差異化特點
- Verified isolation rating (對比TLP7920(D4-B,F)
- Motor-drive positioning (對比TLP7920(D4-A,F)
- Verified gain rank (對比TLP7920(D4-B,F)
設計說明
Treat the isolation barrier as a layout constraint, not only an electrical rating. Keep input-side and output-side copper separated, use the Toshiba datasheet’s recommended package spacing, and avoid routing high-current switching nodes around the isolated signal path. The 5000 Vrms family rating does not by itself establish final creepage, clearance, or reinforced-insulation compliance; those depend on working voltage, pollution degree, insulation material, and the applicable system standard.
Place the shunt or sensing network and the TLP7920(D4-B input connection so that the measured differential signal has a small, controlled loop area. Keep the output-side analog traces short and terminate them according to the receiving amplifier or ADC input. Because the supplied data does not specify bandwidth, input range, or propagation delay, verify settling time and signal-integrity requirements with the manufacturer’s test conditions before choosing trace lengths and filtering.
Do not use the 5000 Vrms isolation number as a substitute for a complete safety review. Confirm the exact TLP7920 ordering suffix, pinout, gain rank, absolute maximum ratings, supply voltage, operating temperature, and certification markings in the Toshiba datasheet. The target string TLP7920(D4-B and the distributor form TLP7920 (D4-B,F may differ in ordering convention, so purchasing or substituting without confirming the manufacturer part-number definition can create qualification or traceability errors.
合規資訊
The manufacturer search result includes EN IEC 60747-5-5 D4 qualification wording and the Mouser result identifies VDE approval, but the supplied data does not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status.