TLP7920(D4 - 5000 Vrms Isolation Amplifier | Toshiba
MPN： TLP7920(D4 ✓ 啟用中TLP7920(D4 概覽
An isolation amplifier is a signal-conditioning semiconductor that combines an analog input, digital isolation path, and isolated analog output. Unlike a conventional optocoupler intended primarily for switching or logic signals, the TLP7920 family preserves analog amplitude information while maintaining electrical separation between high-voltage and low-voltage domains. This makes it suitable for current and voltage feedback in systems where ground potentials and switching transients can corrupt measurements.
The verified distributor and manufacturer sources identify the TLP7920 family for motor phase-current sensing and inverter current/voltage sensing. The listed part is available in an 8-DIP through-hole configuration, while related Toshiba ordering codes include surface-mount and lead-free variants. The TLP7920(D4 designation is associated with the EN IEC 60747-5-5 Option D4 qualification naming convention, as stated in the Toshiba document search result.
The isolation amplifier is intended for current sensing through an external shunt resistor. In a motor-drive circuit, the shunt produces a small differential voltage proportional to phase current, and the TLP7920 transmits that measurement across the isolation barrier. The 230 kHz bandwidth figure supports signal bandwidth requirements in power-conversion systems, while the 5000 Vrms specification identifies the isolation rating used when selecting the component for a high-side or barrier-separated measurement channel.
Designers should verify the exact Toshiba ordering code, package variant, input range, output range, supply requirements, and timing characteristics against the relevant datasheet before production release. The supplied search data does not provide a complete authoritative parameter table, so values not explicitly present in the provided material are marked as needed rather than inferred. For PCB design, place the isolation device so the high-voltage and low-voltage copper areas maintain their required creepage and clearance, and route input and output return paths separately.
直接替換替代品，適用於 TLP7920(D4 — 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 （相同外形與佔位） — 差異在於 Package, Primary Application, Product Type.
TLP7920(D4-A,F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920 (F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920(D4-B,F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920(D4
✅ 直接替換聯絡詢價
查看資料表 →TLP7920(D4-LF1,F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920(D4-TP1,F
✅ 直接替換📋 參考替代品（不在目錄中）
TLP7920(D4 最大額定值與電氣特性
| Product Type | Optically isolated analog-output isolation amplifier |
| Isolation Voltage | 5000 Vrms |
| Bandwidth | 230 kHz |
| 封裝 | 8-DIP through-hole |
| Isolation Technology | Optocoupler-based isolation amplifier |
| Input Conversion | Sigma-delta analog-to-digital conversion |
| 輸出類型 | Analog output |
| Differential Input | Differential isolation-amplifier input |
| Primary Application | Motor phase-current and voltage sensing |
| Inverter Application | Inverter current and voltage sensing |
| External Current-Sense Element | External shunt resistor |
| 工作溫度範圍 | -40C to +105C |
| Common-Mode Transient Immunity | 15 kV/us minimum |
| EN IEC 60747-5-5 Option | Option D4 |
| Lead-Free Ordering Variant | TLP7920(D4,F |
| Surface-Mount Variant | TLP7920(D4-TP1,F |
TLP7920(D4 8-dip through-hole 腳位配置指南
TLP7920(D4（8-dip through-hole 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.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLP7920(D4 適用於 6 應用s: Motor Phase-Current Sensing, Inverter Current Feedback, Motor Drive Voltage Sensing, Power-Converter Feedback Isolation, Industrial Current Measurement, High-Side Feedback Channel.
Motor Phase-Current Sensing
The Toshiba TLP7920(D4 is intended for motor phase-current measurement in electronic motor drives. A shunt resistor converts phase current into a differential voltage, and the isolation amplifier transfers that analog measurement across a 5000 Vrms isolation barrier. The listed 230 kHz bandwidth is relevant for choosing the signal bandwidth of the feedback path, while the analog output supports downstream current control or monitoring. The design must verify the exact input range and conversion timing because those values are not included in the supplied search data.
推薦
Inverter Current Feedback
TLP7920(D4 can be used to monitor inverter current by sensing the voltage produced across an external shunt resistor and transporting the analog result through an isolated channel. Its 5000 Vrms isolation specification helps separate the power-conversion domain from the controller domain. The 230 kHz bandwidth provides a useful initial selection point for inverter feedback bandwidth, but exact compensation, delay, accuracy, and output scaling must be obtained from the exact Toshiba datasheet before closing the control loop.
推薦
Motor Drive Voltage Sensing
The TLP7920(D4 family is identified by Toshiba for voltage sensing as well as current sensing in electronic motor drives and inverters. In a voltage-measurement channel, the isolated amplifier can communicate a conditioned analog voltage between a high-potential power stage and a low-voltage controller. The 5000 Vrms barrier rating and -40C to +105C family operating range help define the environmental and isolation envelope. Input and output voltage limits are data-needed and must be checked before selecting divider and scaling networks.
推薦
Power-Converter Feedback Isolation
TLP7920(D4 is suitable as an analog feedback isolator in power-converter systems where a control circuit must remain electrically separated from a switching power stage. Toshiba describes the device as a photocoupler-based isolation amplifier with analog output and sigma-delta input conversion. The isolation barrier helps prevent switching-node transients from corrupting the controller reference, while the 230 kHz bandwidth can be matched to the converter loop requirements. Exact supply rails, transfer characteristics, and timing require the manufacturer datasheet.
推薦
Industrial Current Measurement
The TLP7920(D4 can provide an isolated analog measurement path for industrial equipment that senses current through a shunt and processes the result on a separate controller board. Its stated 5000 Vrms isolation is useful where the sensing point is electrically separated from the measurement electronics, and the analog output avoids requiring a digital isolation link for every sampled value. The minimum common-mode transient immunity reported for the family is 15 kV/us. The external shunt, input filtering, grounding, and safety layout remain application-specific.
推薦
High-Side Feedback Channel
TLP7920(D4 is applicable to a high-side feedback channel when the sensed voltage must cross from a high-voltage power node to a low-voltage control domain. The isolation amplifier accepts an analog measurement, converts it through an isolated sigma-delta path, and presents an analog output on the isolated side. This structure can simplify feedback routing compared with a bare optocoupler when analog amplitude information must be retained. Designers should verify input common-mode range, output reference, isolation capacitance, creepage, and clearance using the exact package datasheet.
推薦
推薦產品摘要
工程參考資料，適用於 TLP7920(D4 — 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-A,F | TLP7920 (F | TLP7920(D4-B,F | TLP7920(D4-LF1,F |
|---|---|---|---|---|---|
| Brand | Toshiba | Toshiba | Toshiba | Toshiba | Toshiba |
主要差異化特點
- The target is positioned around a 5000 Vrms isolation barrier for analog feedback (對比TLP7920(D4-LF1,F)
- The target is a through-hole DIP option rather than an SMD option (對比TLP7920(D4-TP1,F)
- The family uses sigma-delta input conversion and analog isolated output (對比TLP7920 (F)
- The D4 designation is tied to the documented qualification naming convention (對比TLP7920(D4-B,F)
設計說明
Keep the high-voltage and low-voltage copper regions physically separated according to the exact Toshiba isolation requirements. Preserve the specified creepage and clearance around the 8-DIP isolation-amplifier package, and avoid routing switching-node copper beneath or immediately adjacent to the barrier. Verify the package land pattern and pin numbering against the exact TLP7920 ordering suffix before release because TLP7920 through-hole and SMD variants are listed.
Route the external shunt-sensor connection as a short differential pair and return the isolated output according to the datasheet grounding scheme. Keep the sensing loop away from power-switching nodes and high dv/dt copper, because parasitic coupling can distort the measured current waveform even when the isolation amplifier itself is operating correctly. Add filtering only after checking its effect on bandwidth, phase delay, and control-loop stability.
The TLP7920 is an isolation amplifier, not a power converter, so its primary and secondary supply rails must be designed independently. The supplied data confirms 5000 Vrms isolation and 230 kHz bandwidth but does not provide the primary-side or secondary-side supply-voltage limits. Confirm those limits, output loading, and bypass requirements from the exact Toshiba datasheet before selecting decoupling capacitors or planning a power budget.
Do not treat TLP7920(D4-LF1,F or TLP7920(D4-TP1,F as mechanical drop-in replacements for the through-hole 8-DIP target. The verified comparison data identifies the LF1 variant as SMD/SMT, and DigiKey lists the TP1 variant as an 8-SMD part. Also do not assume that every TLP7920 family option has identical qualification or electrical limits; verify input range, output range, timing, and package marking from the selected datasheet.
合規資訊
The verified data explicitly identifies a lead-free ordering variant, TLP7920(D4,F, and references EN IEC 60747-5-5 Option D4 in the Toshiba document result. Exact RoHS, REACH, halogen-free, and conflict-minerals declarations were not provided and are therefore recorded as unknown.
