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Texas Instruments ISO7720QDRQ1
- Part No.:
- ISO7720QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISO7720QDRQ1.pdf
- Description:
- DGTL ISO 3000VRMS 2CH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,588
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Product details
Overview
ISO7720QDRQ1 from Texas Instruments is a reinforced dual-channel digital isolator for automotive systems, delivering 100 Mbps data rate, ±100 kV/μs CMTI, and 5000 VRMS isolation rating in DW-16 package. It features dual unidirectional channels (A→A, B→B), 2.25–5.5 V dual-supply operation, and AEC-Q100 Grade 1 qualification (–40°C to +125°C).
For engineers reviewing the ISO7720QDRQ1 datasheet, ISO7720QDRQ1 pinout, ISO7720QDRQ1 application, or ISO7720QDRQ1 equivalent, this page provides verified functional safety documentation support, UL/VDE/IEC safety certifications, robust EMC performance metrics, and precise channel directionality for traction inverter and BMS signal isolation.
Technical Context
The ISO7720QDRQ1 implements dual capacitive SiO₂ isolation barriers with reinforced insulation per DIN EN IEC 60747-17 (VDE 0884-17), supporting independent 2.25–5.5 V input/output supplies and level translation. Its unidirectional channel architecture (INA→OUTA, INB→OUTB) enables synchronous signal forwarding without inversion.
It achieves system-level immunity via ±8 kV IEC 61000-4-2 contact ESD across the barrier, 12.8 kV surge capability (oil test), and low emissions compliant with CISPR 32 Class B - all while maintaining <11 ns typical propagation delay and 1.7 mA/channel @ 1 Mbps quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 100 Mbps maximum - supports high-speed CAN FD, SPI, and PWM feedback loops in EV powertrain control. |
| Isolation Rating | 5000 VRMS (UL 1577) - enables safe interface between high-voltage battery domains and 12 V MCU subsystems. |
| CMTI | ±100 kV/μs typical - prevents false triggering during fast-switching events in traction inverters (e.g., SiC gate driver noise). |
| Propagation Delay | 11 ns typical - ensures timing-critical feedback paths (e.g., overcurrent protection) meet sub-50 ns latency budgets. |
| Supply Range | 2.25 V to 5.5 V per side - allows direct interfacing with 3.3 V MCUs and 5 V analog front-ends without level shifters. |
| Ambient Temp | –40°C to +125°C - qualified for under-hood and battery-pack mounting per AEC-Q100 Grade 1. |
| Default Output | High - failsafe state maintains active-high enable signals during power loss in motor control gate drivers. |
Pinout & Package
ISO7720QDRQ1 is packaged in 16-pin Wide-SOIC (DW-16) with 10.30 mm × 7.50 mm body size and reinforced creepage/clearance (8 mm). Pin 1 is top-left corner, pin 16 bottom-right; NC pins are unused and must be left floating or grounded per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA, INB | Input logic signals (side 1) | Accept CMOS/LVCMOS inputs referenced to GND1; support 0.3×VCCI to 0.7×VCCI thresholds for noise margin. |
| OUTA, OUTB | Output logic signals (side 2) | Drive CMOS/LVCMOS loads up to ±4 mA at 5 V; default-high state ensures fail-safe behavior on input loss. |
| VCC1, VCC2 | Independent power supplies | VCC1 powers input side (GND1), VCC2 powers output side (GND2); enables galvanic separation of supply domains. |
| GND1, GND2 | Isolated ground references | Physically separate ground planes required; no direct connection permitted to maintain isolation integrity. |
| NC (pins 2,6,8,10,11,15) | No-connect terminals | Internally unconnected; PCB pads may be omitted or tied to GND1/GND2 only if confirmed non-critical per TI layout guide. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | 5000 VRMS UL rating + VDE 0884-17 certification - meets 2 MOPP requirements for EV battery management and motor drive safety. |
| Automotive Qualification | AEC-Q100 Grade 1 with HBM ±6 kV / CDM ±1.5 kV - validated for 15-year vehicle lifetime in harsh under-hood environments. |
| EMC Robustness | ±8 kV IEC 61000-4-2 contact ESD across barrier + 12.8 kV surge (oil) - eliminates external TVS diodes in BMS cell monitoring interfaces. |
| Low-Power Operation | 1.7 mA/channel @ 1 Mbps - reduces thermal load in densely packed inverter control units with multiple isolation channels. |
| Functional Safety Support | ISO7720-Q1-specific FIT data, FMEA reports, and safety manual available - accelerates ASIL-B system certification for traction inverters. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage measurement ADC outputs and pack contactor control signals in 800 V EV battery packs. IC Role / Device Role / Timing Role: Dual-channel isolator forwarding analog front-end data and high-side gate driver enable commands across 5000 VRMS barrier. Use Value: Enables accurate SOC estimation while preventing fault currents from propagating into MCU domain during cell short-circuit events. | Use Scenario: Transmitting PWM gate drive signals and desaturation feedback from SiC half-bridge modules to isolated MCU in electric axle drives. IC Role / Device Role / Timing Role: Unidirectional isolator preserving edge timing integrity for 100 kHz switching with <11 ns propagation skew between channels. Use Value: Maintains precise dead-time control and fast overcurrent shutdown (<200 ns loop time) without added gate driver delay compensation. |
| On-Board Charger (OBC) | DC/DC Converter Monitoring |
Use Scenario: Isolating communication lines (UART/SPI) between primary-side controller and secondary-side 12 V output regulation circuitry. IC Role / Device Role / Timing Role: Dual-channel isolator enabling bidirectional command/response exchange with 100 Mbps throughput and level translation. Use Value: Supports real-time adaptive charging profiles while meeting CISPR 32 conducted emission limits via low-noise capacitive coupling. | Use Scenario: Isolating voltage/current sense signals from high-side buck converter stage to low-voltage telemetry microcontroller. IC Role / Device Role / Timing Role: Reinforced isolator providing 450 VRMS working voltage margin for continuous 400 V bus monitoring in 48 V mild-hybrid systems. Use Value: Eliminates optocoupler aging drift and enables 0.1% full-scale accuracy over 15-year vehicle life without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8620ED-B-IS | 3.75 kVRMS isolation rating (UL), 100 Mbps, AEC-Q100 Grade 1, but uses capacitive coupling with lower CMTI (75 kV/μs typical) | Limited to 400 V working voltage systems; insufficient for 800 V BMS main pack isolation | Select when cost sensitivity outweighs 800 V system requirements and layout space is constrained (SOIC-8 option available) |
| ADUM1200ARZ-RL7 | 2500 VRMS isolation (UL), 1 Mbps max data rate, industrial temp range only (–40°C to +105°C), no AEC-Q100 qualification | Not suitable for automotive powertrain; lacks functional safety documentation and surge immunity for EV environments | Consider only for non-automotive industrial DC/DC monitoring where 100 Mbps and 125°C operation are unnecessary |
Compared with SI8620ED-B-IS and ADUM1200ARZ-RL7, ISO7720QDRQ1 uniquely delivers 5000 VRMS reinforced isolation, AEC-Q100 Grade 1 operation to +125°C, and functional safety documentation - making it the only qualified solution for ISO 26262 ASIL-B traction inverter signal chains.
Availability
ISO7720QDRQ1 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, on-board chargers, and DC/DC converters requiring stable component supply across automotive production lifecycles.
Supply support for ISO7720QDRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in automotive-grade isolation, power management, and real-time control ICs.
The ISO772x-Q1 product line was designed specifically for high-reliability automotive powertrain and energy storage systems, emphasizing reinforced isolation, long-term lifetime projection (>30 years at 1.5 kVRMS), and system-level EMC resilience.
FAQ
What is the isolation architecture used in ISO7720QDRQ1?
The ISO7720QDRQ1 employs dual capacitive silicon dioxide (SiO₂) insulation barriers - one per channel - fabricated using TI's proprietary process. Each barrier consists of two series-connected capacitors for enhanced reliability and redundancy. This architecture achieves reinforced insulation per VDE 0884-17 and supports 5000 VRMS UL rating in the DW-16 package, with no magnetic or optical coupling elements.
Does ISO7720QDRQ1 support bidirectional data transmission?
No, ISO7720QDRQ1 has two unidirectional channels (INA→OUTA and INB→OUTB), meaning signals flow only from input to output side. For bidirectional isolation, TI recommends ISO7721QDRQ1 (dual opposite-direction channels) or ISO7740QDRQ1 (quad-channel with configurable direction). The ISO7720QDRQ1's fixed unidirectional topology ensures minimal propagation skew and deterministic timing in synchronous control loops.
What safety certifications does ISO7720QDRQ1 hold for automotive use?
ISO7720QDRQ1 holds VDE reinforced insulation certification per DIN EN IEC 60747-17 (VDE 0884-17), UL 1577 component recognition (5000 VRMS), IEC 62368-1, IEC 61010-1, IEC 60601-1, and GB 4943.1. It is AEC-Q100 qualified for Grade 1 (–40°C to +125°C ambient), with documented FIT rate, failure mode analysis, and functional safety manual - enabling ASIL-B compliance in ISO 26262 automotive systems.
Can ISO7720QDRQ1 operate with different supply voltages on input and output sides?
Yes, ISO7720QDRQ1 supports independent 2.25 V to 5.5 V supplies on VCC1 (input side) and VCC2 (output side), enabling seamless level translation between 3.3 V microcontrollers and 5 V analog circuits. This dual-supply flexibility eliminates external level shifters in mixed-voltage automotive ECUs and maintains full 100 Mbps data rate across all valid supply combinations per TI's recommended operating conditions.
What is the default output state of ISO7720QDRQ1 during power loss?
ISO7720QDRQ1 defaults to high output state on both channels (OUTA and OUTB) when input power (VCC1) or input signal is lost - a critical fail-safe feature for automotive applications. This behavior ensures gate drivers remain disabled or safety interlocks stay asserted during brownout conditions. Devices with "F" suffix (e.g., ISO7720FQDRQ1) default low; ISO7720QDRQ1 has no F suffix and thus defaults high as specified in the Device Functional Modes section of its datasheet.
ISO7720QDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3000Vrms
- Common Mode Transient Immunity (Min):
- 85kV/µs
- Data Rate:
- 100Mbps
- Propagation Delay tpLH / tpHL (Max):
- 16ns, 16ns
- Pulse Width Distortion (Max):
- 4.9ns
- Rise / Fall Time (Typ):
- 1.8ns, 1.9ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISO7720QDRQ1 FAQ
1.How can I place an order for ISO7720QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISO7720QDRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISO7720QDRQ1 reliable?
The price and inventory of ISO7720QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISO7720QDRQ1 is usually 5 days.
3.What payment methods are accepted for ISO7720QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISO7720QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISO7720QDRQ1?
ISO7720QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISO7720QDRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISO7720QDRQ1?
For technical support, including ISO7720QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISO7720QDRQ1 requirements.
6.How does Aetrix verify that ISO7720QDRQ1 is sourced from the original manufacturer or authorized distributors?
All ISO7720QDRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISO7720QDRQ1 meets industry standards.
7.What is the process for return or replacement of ISO7720QDRQ1?
All ISO7720QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ISO7720QDRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISO7720QDRQ1 part is unused and in its original packaging.
Return procedure for ISO7720QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISO7720QDRQ1 Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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