TLP7820(D4BTP4 - 5000 Vrms Isolation Amplifier | Toshiba
부품 번호: TLP7820(D4BTP4 ✓ 활성TLP7820(D4BTP4 개요
An isolation amplifier is a type of analog signal-conditioning IC used to transfer a measurement across a high-voltage barrier while maintaining galvanic isolation between the sensed circuit and the host electronics. The broader hierarchy is isolation amplifier to signal-conditioning IC to interface IC to semiconductor. Unlike an ordinary shunt amplifier, an optically isolated current-sense amplifier combines measurement and isolation in one package. This allows a controller, inverter, or monitoring system to process a high-current power rail without sharing its ground or exposing its low-voltage electronics to the hazardous domain.
The TLP7820 family is specifically associated with accurate DC current measurement and motor phase-current sensing. Its differential input accepts current information from an external shunt, while the internal amplifier provides a scaled analog output suitable for an analog-to-digital converter. The analog output architecture gives designers a continuous voltage representation of measured current and permits system-specific scaling through external components. The product page identifies current sensing, power management, motor phase current sensing, and inverter current and voltage sensing as principal uses.
From a practical perspective, the 5000 Vrms isolation rating is the device’s most prominent headline specification. Reinforced isolation separates the measured high-side or low-side power domain from the control side and is useful in industrial drives, traction equipment, renewable-energy inverters, and other systems where a shunt may be positioned at a substantial potential above system ground. Optical isolation also prevents ground currents from contaminating the measurement path, provided the complete channel satisfies applicable creepage, clearance, and installation requirements.
The B suffix denotes gain rank B, as confirmed by the Mouser product listing. This rank supports accurate DC current measurement with a built-in precision amplifier, making the part appropriate for motor control feedback where offset, scaling, and channel behavior must remain predictable. Exact input range, gain tolerance, bandwidth, supply requirements, output swing, and temperature limits must be confirmed in the manufacturer datasheet before final design release.
A key implementation consideration is that isolation performance depends on the entire board, not only the IC. The input-side and output-side ground domains must remain separated, the device must be placed to satisfy required creepage and clearance distances, and the analog output must be routed away from high-dv/dt switching nodes. The analog trace should be short, referenced to the output-side ground, and protected from capacitive coupling through careful placement of shunt, amplifier, and protection components.
This page combines verified manufacturer and distributor information, explicit qualification details, source-backed product options, and application-focused engineering guidance. It distinguishes verified facts from specifications that still require confirmation from the current Toshiba datasheet, helping engineers evaluate the TLP7820(D4BTP4 without relying on incomplete distributor summaries.
드롭인 대체품: TLP7820(D4BTP4 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
TLP7820(D4BTP4,E
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLP7820(D4B,TL,E
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLP7820(D4,E
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLP7820(D4ATP4,E
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLP7820(TP4,E
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLP7820(D4BTP4 최대 정격 & 전기적 특성
| Product Type | Optically isolated isolation amplifier |
| Isolation Rating | 5000 Vrms |
| 출력 유형 | Analog output |
| Input Arrangement | Differential input |
| Circuit Count | 1 circuit |
| 패키지 | 8-pin SO8L (LF4) |
| Package Width | 7.50 mm |
| 실장 유형 | Surface mount |
| Gain Rank | Rank B |
| Primary Measurement | DC current |
| Primary Application | Motor phase current sensing |
| Power Management Application | Current sensing |
| Additional Application | Inverter current and voltage sensing |
| Qualification Option | Option D4 of EN IEC 60747-5-5 |
| Tape-and-Reel Packaging | TP4 |
| Lead Finish | E |
TLP7820(D4BTP4 7.50 mm 핀 구성 가이드
TLP7820(D4BTP4(7.50 mm 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: TLP7820(D4BTP4.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
TLP7820(D4BTP4 적합 용도: 6 애플리케이션s: Motor Phase-Current Sensing, Industrial Inverter Feedback, Renewable-Energy Power Conversion, High-Voltage DC Current Monitoring, Servo and Precision Motor Control, Battery and Power-System Diagnostics.
Motor Phase-Current Sensing
The TLP7820(D4BTP4 fits motor-drive phase-current feedback because Toshiba identifies the device for accurate DC current measurement with a built-in precision amplifier and analog output. It can receive a differential signal derived from a shunt and transfer the scaled measurement across the 5000 Vrms isolation barrier. The isolation amplifier therefore separates the inverter power domain from the controller while retaining an analog voltage that can feed an ADC. Designers must select the gain rank and external shunt to place the required current span within the verified input range, while observing the package’s isolation-layout requirements.
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Industrial Inverter Feedback
The TLP7820(D4BTP4 is appropriate for isolated feedback in industrial inverter and power-conversion systems where phase current is referenced to a switching power node. Its 5000 Vrms isolation rating supports a strong separation between the measured current path and control circuitry, while the differential input suits shunt-based sensing. The analog output gives a continuously scaled representation that can be sampled by a control MCU. Key design checks are the exact gain-rank B range, shunt dissipation, amplifier offset and linearity, and separation of input-side and output-side ground planes across the isolation boundary.
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Renewable-Energy Power Conversion
The TLP7820(D4BTP4 can serve as an isolated shunt amplifier in inverter and power-conversion equipment used for solar, energy-storage, and grid-interface systems. Its isolated analog output permits a controller to monitor DC current without electrically linking the high-current domain to its low-voltage logic. This is valuable when the shunt or current-sense element is placed near a switching bridge. The implementation must preserve the device’s isolation geometry, use low-loop-layout analog routing, and confirm that the measured current, gain rank, and operating temperature remain within the manufacturer’s limits rather than relying only on the 5000 Vrms headline rating.
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High-Voltage DC Current Monitoring
The TLP7820(D4BTP4 is suited to isolated DC current monitoring where the sensed rail is electrically separated from the measurement electronics. Its differential analog front end can operate with a shunt-derived signal, and the optically isolated channel limits conductive coupling between the two sides. The 5000 Vrms isolation rating provides a central selection criterion, but engineers must also evaluate insulation type, working voltage, creepage, clearance, pollution degree, and the completed PCB’s isolation construction. This makes the device useful in laboratory power supplies, industrial power modules, and equipment requiring diagnostic current reporting.
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Servo and Precision Motor Control
The TLP7820(D4BTP4 can provide isolated torque or phase-current feedback in servo drives and precision motor controllers. The built-in precision-amplifier function and analog output are useful where the controller requires a scaled measurement of current, while galvanic isolation protects the logic side from motor-side potentials. The analog signal can be compared, filtered, or digitized for current-loop control. To use it reliably, verify the gain rank against the motor’s peak current, account for shunt bandwidth and Kelvin routing, and observe the isolation clearance along the package and board perimeter.
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Battery and Power-System Diagnostics
The TLP7820(D4BTP4 can isolate a DC shunt measurement in battery-management and power-system diagnostic circuits. The scaled analog output allows a controller to monitor current for state-of-charge estimation, load reporting, or fault detection while maintaining separation between the battery domain and logic circuitry. The suitability depends on the available isolation-voltage rating, input-current range, gain rank B, and thermal operating environment. Designers should also verify whether the system requires bidirectional sensing, because the verified distributor description identifies a differential input but does not provide the complete input-transfer function needed to confirm operating mode.
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추천 제품 요약
엔지니어링 참조 데이터: TLP7820(D4BTP4 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TLP7820(D4BTP4,E | TLP7820(D4B,TL,E | TLP7820(D4,E | TLP7820(D4ATP4,E | TLP7820(TP4,E |
|---|---|---|---|---|---|---|
| Package | SO8L (LF4), 8-pin | SO8L (LF4), 8-pin | SOIC-8 / SO8L family, 8-pin | SOIC-8, 8-pin | SOIC-8 family, 8-pin | SOIC-8, 8-pin |
| Brand | Toshiba Semiconductor and Storage | Toshiba Semiconductor and Storage | Toshiba Semiconductor and Storage | Toshiba Semiconductor and Storage | Toshiba Semiconductor and Storage | Toshiba Semiconductor and Storage |
| Qualification Option | Option D4 of EN IEC 60747-5-5 | Option D4 of EN IEC 60747-5-5 | Option D4 of EN IEC 60747-5-5 | Option D4 of EN IEC 60747-5-5 | Option D4 of EN IEC 60747-5-5 | Not indicated in the verified ordering code |
| Output Type | Analog output | Analog output | Analog output | Analog output | Analog output | Analog output |
| Primary Application | DC current and motor phase-current sensing | Current sensing and power management | Current sensing and power management | Optocoupler isolation amplifier | Current sensing and power management | Current sensing and power management |
주요 차별점
- Verified D4 reinforced-insulation qualification option (vs TLP7820(TP4,E)
- Gain rank B matches the target current-feedback configuration (vs TLP7820(D4ATP4,E)
- Maintains the same verified isolation-amplifier family and footprint (vs TLP7820(D4,E)
설계 노트
Preserve the isolation boundary across the entire PCB, not only beneath the TLP7820(D4BTP4. Keep the input-side shunt return, output-side ground, analog output, and any compensation or filtering components on their respective sides of the isolation gap. Route the analog output as a short trace referenced to the output-side ground and avoid copper, test points, connectors, and fastener hardware that bridge the barrier.
Use a Kelvin-style connection to the shunt whenever practical. The TLP7820(D4BTP4 has a differential input, so minimizing the difference between the two input conductors reduces pickup from motor-switching edges and common-mode current. Place input filtering and protection close to the device, keep shunt-loop area small, and verify that the resulting input network does not alter the intended gain, bandwidth, or accuracy for the selected gain rank.
Do not treat the 5000 Vrms isolation rating as the only system isolation criterion. Confirm the manufacturer’s permitted working voltage, package creepage and clearance, external resistor and capacitor ratings, pollution degree, and applicable certification requirements. Also avoid assuming that every TLP7820 suffix is electrically identical: D4 identifies the verified EN IEC 60747-5-5 qualification option, while B denotes gain rank B.
규정 준수 정보
The verified manufacturer document states that the D4 variant is qualified according to option D4 of EN IEC 60747-5-5. Other environmental and material-compliance claims are not stated in the supplied excerpts.
