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Texas Instruments TPSI2140QDWQRQ1
- Part No.:
- TPSI2140QDWQRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Solid State Relays (SSR)
- Package:
- 11-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TPSI2140QDWQRQ1.pdf
- Description:
- TPSI2140QDWQRQ1
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSI2140QDWQRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive isolated solid-state relay integrating back-to-back avalanche-rated MOSFETs, 1200-V standoff voltage, 130-Ω RON at 25°C, <700-μs switching time, and capacitive isolation with 3750-VRMS withstand rating - deployed in battery management systems for high-voltage insulation resistance monitoring.
For engineers reviewing the TPSI2140QDWQRQ1 datasheet, TPSI2140QDWQRQ1 pinout, TPSI2140QDWQRQ1 application, or TPSI2140QDWQRQ1 equivalent, key selection considerations include avalanche robustness (2-mA/5-s), functional safety documentation support for ISO 26262, ±100-V/ns CMTI, SOIC-11 DWQ package with 8-mm creepage, and zero secondary-side power supply requirement.
Technical Context
The TPSI2140QDWQRQ1 implements TI's capacitive isolation barrier to transmit logic and power across domains without a secondary supply. Its primary side integrates UVLO protection, fail-safe EN input, and spread-spectrum modulation for EMI reduction; secondary side uses full-bridge rectifiers per MOSFET and slew-rate-controlled gate drivers.
It operates as a bidirectional, galvanically isolated switch with ±1200-V S1–S2 voltage range, 50-mA continuous current rating, and thermally optimized SOIC-11 DWQ package enabling HiPot testing compliance. The device supports two functional modes - powered-up (EN high + VDD > 4.2 V) and powered-down (VDD < 4.1 V) - with fail-safe behavior preventing back-powering of VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Withstand Voltage | 3750-VRMS (60 s qualification); enables compliance with reinforced insulation requirements in automotive HV systems |
| Standoff Voltage | ±1200 V between S1 and S2; supports direct connection to EV battery packs and DC fast-charger rails |
| RON (TJ = 25°C) | 130 Ω; limits conduction loss to ≤1.3 mW at 50-mA load, critical for low-power insulation monitoring circuits |
| Avalanche Rating | 2-mA for 5-s pulses; allows dielectric withstand (HiPot) testing up to 1000-VRMS without external clamping components |
| VDD Supply Current | 9 mA ON / 3.5 µA OFF; eliminates need for LDO or bias supply on primary side in always-on monitoring applications |
| CMTI | ±100 V/ns typical; ensures reliable switching during fast transients in motor drive or charger EMI environments |
| Package | SOIC-11 (DWQ), 10.3 mm × 7.5 mm, 8-mm creepage/clearance; meets IEC 60664-1 Pollution Degree 2 and Overvoltage Category II |
Pinout & Package
TPSI2140QDWQRQ1 is housed in an SOIC-11 (DWQ) package with wide pins for enhanced thermal dissipation and ≥8-mm creepage/clearance between primary and secondary sides. Pin 10 (SM) is a thermal pad tied internally to substrate; external connection improves heat transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Primary-side power input | Supplies 4.5–20 V; powers internal oscillator, driver, and isolation barrier - no secondary supply needed |
| 2 (GND) | Primary-side ground reference | Return path for VDD and EN; must be separated from secondary ground to maintain isolation integrity |
| 3 (EN) | Active-high enable control | Fail-safe input: logic HI (2.1–20 V) enables switching; floating or LOW disables MOSFETs and reduces VDD current to 3.5 µA |
| 4–7, 8 (NC/GND) | No-connect or ground tie | Internally connected to GND; recommended to externally connect to primary GND plane for noise immunity and thermal relief |
| 9 (S2), 11 (S1) | Switch terminals | Bidirectional high-voltage nodes; rated for ±1200 V and 50-mA continuous; symmetric layout supports AC or DC switching |
| 10 (SM) | Thermal pad | Internally connected to substrate; soldering to large copper pour lowers RθJA from 70°C/W to 30°C/W (5-s pulse) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated avalanche-rated MOSFETs | Qualified for 2-mA/5-s avalanche pulses at ±1200 V, enabling system-level HiPot testing without external TVS or snubbers |
| Capacitive isolation barrier | 3750-VRMS withstand, 5000-VPK surge, and >26-year lifetime at 1000-VRMS working voltage - exceeds automotive long-life reliability targets |
| Functional safety documentation | ISO 26262 ASIL-B ready support package available, covering failure modes, FIT rate, and diagnostic coverage analysis |
| Zero secondary-side power | On-chip full-bridge rectifiers harvest energy from primary-side carrier signal - eliminates isolated DC/DC or bias windings |
| Wide-input logic interface | EN accepts 2.1–20 V logic HI, allowing direct GPIO or MCU output drive without level-shifting in 5-V or 12-V automotive domains |
Applications
| Insulation Resistance Monitoring (BMS) | EV Onboard Charger Control |
|---|---|
Use Scenario: Continuously measuring leakage resistance between EV battery terminals and chassis ground to detect insulation degradation before fault conditions arise. IC Role / Device Role / Timing Role: Bidirectional isolated switch routing test voltages across battery terminals while maintaining galvanic separation from MCU domain. Use Value: Enables accurate RISO calculation using only two TPSI2140QDWQRQ1 devices and one ADC channel - reducing BOM count vs. opto-relay + isolated amplifier solutions. | Use Scenario: Controlling pre-charge and main contactor sequencing in 400-V/800-V onboard chargers during AC-to-DC conversion startup. IC Role / Device Role / Timing Role: High-voltage isolation switch isolating auxiliary control logic from 1200-V DC bus during inrush current limiting phase. Use Value: Withstands 2-mA surge pulses during DC-link capacitor charging, eliminating need for parallel MOVs or active crowbar circuits. |
| Solar Energy String Monitoring | Hybrid Powertrain Safety Interlock |
Use Scenario: Detecting ground faults in photovoltaic string inverters by injecting test signals across isolated PV arrays operating up to 1500-V DC. IC Role / Device Role / Timing Role: Isolated solid-state relay switching measurement paths between string outputs and isolation-monitoring ICs. Use Value: 1200-V standoff and 8-mm creepage meet IEC 62109 and UL 1741 SB requirements for Class II PV systems without additional spacing. | Use Scenario: Enabling/disabling high-voltage traction battery access in response to vehicle crash sensors or service disconnect requests. IC Role / Device Role / Timing Role: Fail-safe isolated switch interrupting HV power path upon receipt of safety-critical disable command from airbag controller. Use Value: Functional safety documentation and AEC-Q100 Grade 1 qualification support ASIL-C decomposition for HV interlock loop architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si827x series (e.g., Si8273BD) | Gate-driver IC requiring external MOSFETs; no integrated avalanche MOSFETs or secondary-side power harvesting | Used in motor control where discrete FET selection is needed; lacks built-in HiPot robustness for insulation monitoring | Select when discrete FET optimization or higher current (>50 mA) is required - not drop-in for TPSI2140QDWQRQ1's integrated relay function |
| ADUM4190TRIZ-RL | Isolated error amplifier (not a switch); provides feedback across isolation barrier but no power switching capability | Deployed in isolated DC/DC regulation loops, not HV switching or insulation sensing | Choose only for closed-loop voltage/current sensing - cannot replace TPSI2140QDWQRQ1's solid-state relay functionality |
Compared with Si8273BD and ADUM4190TRIZ-RL, the TPSI2140QDWQRQ1 uniquely combines integrated avalanche MOSFETs, capacitive isolation, and zero-secondary-power operation - making it the only single-package solution qualified for automotive insulation resistance monitoring per ISO 6469-3.
Availability
TPSI2140QDWQRQ1 is available at Aetrix Electronics and suitable for battery management systems, EV onboard chargers, solar energy string monitors, and hybrid powertrain safety interlocks requiring stable component supply across automotive production lifecycles.
Supply support for TPSI2140QDWQRQ1 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 designing analog, embedded processing, and connectivity technologies for automotive, industrial, and personal electronics markets.
The TPSI2140QDWQRQ1 belongs to TI's automotive-grade isolated switch product line, engineered specifically for high-voltage insulation monitoring and safety-critical switching in electric vehicles and energy storage systems.
FAQ
What is the maximum repetitive avalanche current rating for TPSI2140QDWQRQ1?
The TPSI2140QDWQRQ1 has a confirmed repetitive avalanche rating of 2 mA for 5-second pulses and 1 mA for 60-second pulses, validated under AEC-Q100 stress conditions. This rating enables the device to survive dielectric withstand (HiPot) testing at 1000-VRMS without external protection components. The TPSI2140QDWQRQ1 datasheet specifies these values in Section 6.1 Absolute Maximum Ratings and confirms qualification per system-level reliability standards.
Does TPSI2140QDWQRQ1 require an external power supply on the secondary side?
No, the TPSI2140QDWQRQ1 does not require any external power supply on the secondary side. It uses TI's capacitive isolation technology to deliver both signal and power across the barrier, with on-chip full-bridge rectifiers generating local gate drive voltage for the back-to-back MOSFETs. This eliminates isolated DC/DC converters or bias windings - a key differentiator confirmed in the device description and block diagram of the TPSI2140QDWQRQ1 datasheet.
What is the creepage and clearance distance of the TPSI2140QDWQRQ1 SOIC-11 DWQ package?
The TPSI2140QDWQRQ1 in SOIC-11 DWQ package provides ≥8 mm creepage and clearance between primary and secondary sides, and ≥6 mm across switch terminals (S1–S2). These dimensions comply with IEC 60664-1 Pollution Degree 2 and Overvoltage Category II requirements, as verified in Section 6.6 Insulation Specifications of the TPSI2140QDWQRQ1 datasheet and supported by TI's package mechanical drawings.
Can TPSI2140QDWQRQ1 be used in non-automotive industrial applications?
Yes, the TPSI2140QDWQRQ1 is qualified for industrial use despite its AEC-Q100 Grade 1 automotive rating. Its 1200-V standoff, 3750-VRMS isolation, and 2-mA avalanche rating meet IEC 61800-5-1 and UL 61800-5-1 requirements for industrial drives and energy storage. The TPSI2140QDWQRQ1 datasheet explicitly lists energy storage systems (ESS) and solar energy among its target applications - confirming suitability beyond automotive domains.
What is the common-mode transient immunity (CMTI) specification for TPSI2140QDWQRQ1?
The TPSI2140QDWQRQ1 has a typical common-mode transient immunity (CMTI) of ±100 V/ns, measured at |VCM| = 1000 V, as specified in Section 6.9 Electrical Characteristics of the official datasheet. This value ensures reliable operation during fast-switching events in EV powertrains and solar inverters, and is validated across temperature (–40°C to 125°C) and process corners per TI's characterization report SLVSFR3B.
TPSI2140QDWQRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Mounting Type:
- Surface Mount
- Circuit:
- DPST-NO (2 Form A)
- Output Type:
- DC
- Voltage - Input:
- 4.5 ~ 20VDC
- Voltage - Load:
- 0 V ~ 1200 V
- Load Current:
- 50 mA
- On-State Resistance (Max):
- 300 Ohms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 11-SOIC
- Approval Agency:
- CQC, CSA, TUV, UL, VDE
- Grade:
- Automotive
- Qualification:
- AEC-Q100
TPSI2140QDWQRQ1 FAQ
1.How can I place an order for TPSI2140QDWQRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSI2140QDWQRQ1 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 TPSI2140QDWQRQ1 reliable?
The price and inventory of TPSI2140QDWQRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSI2140QDWQRQ1 is usually 5 days.
3.What payment methods are accepted for TPSI2140QDWQRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSI2140QDWQRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSI2140QDWQRQ1?
TPSI2140QDWQRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSI2140QDWQRQ1 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 TPSI2140QDWQRQ1?
For technical support, including TPSI2140QDWQRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSI2140QDWQRQ1 requirements.
6.How does Aetrix verify that TPSI2140QDWQRQ1 is sourced from the original manufacturer or authorized distributors?
All TPSI2140QDWQRQ1 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 TPSI2140QDWQRQ1 meets industry standards.
7.What is the process for return or replacement of TPSI2140QDWQRQ1?
All TPSI2140QDWQRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPSI2140QDWQRQ1, 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 TPSI2140QDWQRQ1 part is unused and in its original packaging.
Return procedure for TPSI2140QDWQRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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