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Texas Instruments UCC21520QDWQ1
- Part No.:
- UCC21520QDWQ1
- Manufacturer:
- Texas Instruments
- Category:
- Isolators - Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
UCC21520QDWQ1.pdf
- Description:
- DGTL ISO 5.7KV 2CH GT DVR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,383
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Product details
Overview
UCC21520QDWQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified, reinforced-isolated dual-channel gate driver delivering 4A source / 6A sink peak output current, 33ns typical propagation delay, and >125V/ns common-mode transient immunity (CMTI) for driving SiC MOSFETs, IGBTs, and power MOSFETs in automotive high-voltage traction inverters and on-board chargers.
For engineers reviewing the UCC21520QDWQ1 datasheet, UCC21520QDWQ1 pinout, UCC21520QDWQ1 application, or UCC21520QDWQ1 equivalent, key selection criteria include its 5.7kVRMS isolation rating per UL 1577, programmable dead time via external resistor, dual independent secondary-side supplies (up to 25V), and functional safety documentation support for ISO 26262 ASIL-B system integration.
Technical Context
The UCC21520QDWQ1 implements galvanic isolation using capacitive coupling across a reinforced barrier rated for 8000VPK per VDE 0884-17, enabling safe operation with up to 1500VDC working voltage between isolated domains. Its dual-output architecture supports configurable half-bridge, dual low-side, or dual high-side topologies with independent VDDA/VDDB supplies and shared VCCI logic input supply.
Internal functional isolation separates the two secondary-side drivers, allowing independent biasing and ground referencing (VSSA/VSSB). The device integrates fast disable logic with <10μs response, programmable dead time (80–600ns via RDT), and UVLO protection on all supply rails - VCCI (2.7V rising), VDDA/VDDB (8V rising for this variant), ensuring robust power sequencing in automotive 12V/48V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5.7kVRMS for 1 minute (UL 1577); 8000VPK reinforced (VDE 0884-17) |
| Peak Output Current | 4A source / 6A sink - drives high-gate-charge SiC MOSFETs at >5MHz switching |
| Propagation Delay | 33ns typical - enables precise timing control in high-frequency motor control loops |
| CMTI | >125V/ns - maintains signal integrity in noisy high-dv/dt automotive power stages |
| Input Voltage Range | VCCI = 3V to 18V - interfaces directly with 3.3V/5V microcontrollers and analog PWM controllers |
| VDD UVLO Threshold | 8.5V rising (8-V version) - prevents erratic switching during brown-out conditions in 12V automotive systems |
| Operating Junction Temp | –40°C to +150°C - supports under-hood placement in HEV/EV power modules |
Pinout & Package
DW package: 16-pin SOIC with wide-body creepage/clearance (>8mm), reinforced isolation barrier, and internal functional separation between secondary-side drivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA, INB | Logic input (TTL/CMOS) | Accepts 3.3V/5V control signals; internally pulled low when open - requires grounding if unused |
| DISABLE | Global shutdown control | Active-high; forces both outputs low within <10μs - critical for fault-safe power stage shutdown |
| DT | Dead time programming | Resistor-to-GND sets 80–600ns dead time; floating or tied to VCCI enables overlap mode |
| VCCI | Primary-side logic supply | 3–18V input rail; powers input comparators and isolation transmitter - decoupled locally |
| VDDA, VDDB | Secondary-side driver supplies | Independent 6.5–25V rails per channel; enable asymmetric gate drive voltages for SiC/IGBT optimization |
| OUTA, OUTB | High-current gate outputs | 4A/6A peak drive capability; low 0.55Ω pull-down resistance ensures fast turn-off of high-Ciss devices |
| VSSA, VSSB | Secondary-side grounds | Separate return paths per channel - essential for minimizing ground bounce in half-bridge configurations |
| GND | Primary-side reference | Logic-side ground; must be isolated from VSSA/VSSB by PCB layout and transformer/capacitor barrier |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Certification | UL 1577 (5.7kVRMS), VDE 0884-17 (8000VPK), CSA/IEC 62368-1 - meets automotive end-equipment safety standards |
| Programmable Dead Time | Adjustable 80–600ns via single external resistor - eliminates shoot-through risk without MCU firmware overhead |
| Functional Safety Support | Documentation package available for ISO 26262 ASIL-B system-level FMEDA and safety analysis |
| Surge Immunity | 10kV surge withstand (IEC 62368-1) - protects against load dump and inductive switching transients |
| Isolation Barrier Life | >40 years at rated working voltage - validated by TDDB testing per VDE 0884-17 |
Applications
| Automotive Traction Inverter | On-Board Charger (OBC) |
|---|---|
Use Scenario: Driving parallel SiC MOSFET half-bridges in 800V battery EV inverters with >20kHz PWM and 1500V bus transients. IC Role / Device Role / Timing Role: Dual-channel isolated gate driver providing independent, CMTI-hardened control of high-side and low-side switches with programmable dead time. Use Value: Enables reliable 1500VDC working voltage operation and 5MHz switching capability required for high-power-density SiC inverters. | Use Scenario: Controlling dual active bridge (DAB) topology in 11kW+ bidirectional OBCs interfacing 400V/800V batteries with AC grid. IC Role / Device Role / Timing Role: Isolated dual driver managing synchronous rectification and primary-side switching with matched propagation delay <6ns. Use Value: Delivers tight timing matching and 125V/ns CMTI to maintain ZVS/ZCS across wide input voltage ranges and temperature extremes. |
| DC-DC Converter for 48V Mild Hybrid | Industrial UPS Inverter Stage |
Use Scenario: Gate-driving GaN HEMTs in high-frequency (500kHz–1MHz) isolated DC-DC converters powering ADAS ECUs in 48V architectures. IC Role / Device Role / Timing Role: Configurable dual low-side driver with 33ns propagation delay and 20ns minimum pulse width for precise high-frequency control. Use Value: Supports ultra-fast switching with minimal timing uncertainty, reducing conduction losses and enabling smaller magnetics. | Use Scenario: Driving IGBT modules in three-phase UPS inverters requiring fail-safe shutdown during grid faults or overloads. IC Role / Device Role / Timing Role: Automotive-grade isolated driver with fast disable (<10μs) and reinforced 5.7kVRMS isolation for safety-critical backup power systems. Use Value: Meets UL 1741 SA and IEC 62040-1 requirements for reinforced insulation and functional safety in medical/industrial UPS applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC21520ADWQ1 | 5V VDD UVLO threshold vs. 8V in UCC21520QDWQ1; identical pinout, timing, and isolation specs | Better suited for 5V-biased gate drive rails; requires tighter VDD regulation to avoid nuisance UVLO trips | Select UCC21520ADWQ1 when using 5V secondary supplies; otherwise UCC21520QDWQ1 provides higher noise margin in 12V systems |
| Si827x series (e.g., Si8273BD-IS) | Higher CMTI (150V/ns), lower peak current (4A/4A), different pinout, no programmable dead time | Lacks integrated DT function; requires external circuitry for dead time control; optimized for cost-sensitive industrial rather than automotive ASIL-B | Choose Si8273BD-IS only if CMTI >150V/ns is mandatory and dead time can be managed externally; not AEC-Q100 certified |
Compared with UCC21520ADWQ1 and Si8273BD-IS, the UCC21520QDWQ1 uniquely combines AEC-Q100 Grade 1 qualification, 8V VDD UVLO for automotive robustness, and resistor-programmable dead time - eliminating design compromises between safety certification, noise immunity, and layout simplicity.
Availability
UCC21520QDWQ1 is available at Aetrix Electronics and suitable for automotive traction inverters, on-board chargers, and industrial UPS systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for ASIL-B safety-critical designs.
Supply support for UCC21520QDWQ1 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 leader specializing in analog, embedded processing, and power management technologies with deep expertise in automotive-grade reliability and functional safety.
The UCC21520QDWQ1 belongs to TI's automotive-qualified isolated gate driver product line, designed specifically for high-reliability, high-efficiency power conversion in electric vehicle powertrains and charging infrastructure.
FAQ
What is the isolation voltage rating of the UCC21520QDWQ1?
The UCC21520QDWQ1 has a reinforced isolation rating of 5.7kVRMS per UL 1577 (1-minute test) and 8000VPK per DIN EN IEC 60747-17 (VDE 0884-17). This enables safe operation at up to 1500VDC working voltage between input and output sides, meeting stringent automotive and industrial safety standards.
Does the UCC21520QDWQ1 support half-bridge configuration?
Yes, the UCC21520QDWQ1 supports half-bridge configuration via its dual independent outputs (OUTA/OUTB), programmable dead time (DT pin), and separate secondary-side supplies (VDDA/VDDB) and grounds (VSSA/VSSB). It allows precise control of high-side and low-side switches while preventing shoot-through through hardware-configurable dead time.
What is the purpose of the DT pin on the UCC21520QDWQ1?
The DT pin on the UCC21520QDWQ1 configures dead time between the two output channels. Connecting it to GND via a resistor (2–500 kΩ) sets dead time from 80ns to 600ns; tying it to VCCI enables overlap mode. This hardware-based control eliminates software dependency and ensures deterministic timing in safety-critical automotive power stages.
How does the UCC21520QDWQ1 handle fault conditions?
The UCC21520QDWQ1 incorporates multiple fault protections: fast disable (<10μs response), primary-side logic failure detection (forces both outputs low), and independent UVLO on VCCI, VDDA, and VDDB. These features ensure fail-safe shutdown during overvoltage, undervoltage, or control signal loss - critical for ISO 26262-compliant automotive systems.
Is the UCC21520QDWQ1 pin-compatible with other devices in the UCC21520 family?
Yes, the UCC21520QDWQ1 is pin-compatible with UCC21520ADWQ1 and UCC21520DWQ1 in the DW (SOIC-16) package. All share identical pinout, timing, isolation, and functional specifications - differing only in VDD UVLO threshold (5V, 8V, or dual-option), enabling drop-in replacement where voltage margin requirements align.
UCC21520QDWQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Technology:
- Capacitive Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 5700Vrms
- Common Mode Transient Immunity (Min):
- 100V/ns
- Propagation Delay tpLH / tpHL (Max):
- 30ns, 30ns
- Pulse Width Distortion (Max):
- 5ns
- Rise / Fall Time (Typ):
- 6ns, 7ns
- Current - Output High, Low:
- 4A, 6A
- Current - Peak Output:
- -
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 6.5V ~ 25V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
- Approval Agency:
- -
UCC21520QDWQ1 FAQ
1.How can I place an order for UCC21520QDWQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC21520QDWQ1 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 UCC21520QDWQ1 reliable?
The price and inventory of UCC21520QDWQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC21520QDWQ1 is usually 5 days.
3.What payment methods are accepted for UCC21520QDWQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC21520QDWQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC21520QDWQ1?
UCC21520QDWQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC21520QDWQ1 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 UCC21520QDWQ1?
For technical support, including UCC21520QDWQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC21520QDWQ1 requirements.
6.How does Aetrix verify that UCC21520QDWQ1 is sourced from the original manufacturer or authorized distributors?
All UCC21520QDWQ1 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 UCC21520QDWQ1 meets industry standards.
7.What is the process for return or replacement of UCC21520QDWQ1?
All UCC21520QDWQ1 units undergo pre-shipment inspection (PSI). If there is an issue with UCC21520QDWQ1, 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 UCC21520QDWQ1 part is unused and in its original packaging.
Return procedure for UCC21520QDWQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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