TLP7920(D4 - 5000 Vrms Isolation Amplifier | Toshiba
MPN: TLP7920(D4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.58 | $6.58 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TLP7920(D4 Overview
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.
Drop-in alternatives for TLP7920(D4 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLP7920(D4 (same form factor and footprint) — differing in Package, Primary Application, Product Type.
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TLP7920(D4-A,F
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TLP7920 (F
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TLP7920(D4-B,F
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TLP7920(D4
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View Datasheet →TLP7920(D4-LF1,F
✅ Drop-In📋 Reference alternative (not in catalog)
TLP7920(D4-TP1,F
✅ Drop-In📋 Reference alternative (not in catalog)
TLP7920(D4 Maximum Ratings & Electrical Characteristics
| Product Type | Optically isolated analog-output isolation amplifier |
| Isolation Voltage | 5000 Vrms |
| Bandwidth | 230 kHz |
| Package | 8-DIP through-hole |
| Isolation Technology | Optocoupler-based isolation amplifier |
| Input Conversion | Sigma-delta analog-to-digital conversion |
| Output Type | 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 |
| Operating Temperature Range | -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 Pin Configuration Guide
Pin configuration for TLP7920(D4 (8-dip through-hole package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for TLP7920(D4.
Refer to the datasheet for full pin configuration.
Typical Applications
TLP7920(D4 is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for TLP7920(D4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLP7920(D4-A,F | TLP7920 (F | TLP7920(D4-B,F | TLP7920(D4-LF1,F |
|---|---|---|---|---|---|
| Brand | Toshiba | Toshiba | Toshiba | Toshiba | Toshiba |
Key Differentiators
- The target is positioned around a 5000 Vrms isolation barrier for analog feedback (vs TLP7920(D4-LF1,F)
- The target is a through-hole DIP option rather than an SMD option (vs TLP7920(D4-TP1,F)
- The family uses sigma-delta input conversion and analog isolated output (vs TLP7920 (F)
- The D4 designation is tied to the documented qualification naming convention (vs TLP7920(D4-B,F)
Design Notes
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.
Compliance Information
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.
