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Texas Instruments UCC57108BQDRQ1
- Part No.:
- UCC57108BQDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC57108BQDRQ1.pdf
- Description:
- Automotive low-side 3A/3A driver
- Quantity:
- Payment:
- Shipping:
Inventory:2,625
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Product details
Overview
UCC57108BQDRQ1 from Texas Instruments is a single-channel, AEC-Q100 Grade 1 qualified low-side gate driver for automotive IGBT and SiC MOSFETs, delivering ±3 A peak source/sink current, 26 ns typical propagation delay, DESAT protection with 150 ns leading-edge blanking, and operation from –40°C to 150°C junction temperature - deployed in HEV/EV PTC heaters and traction inverter active discharge circuits.
For engineers reviewing the UCC57108BQDRQ1 datasheet, UCC57108BQDRQ1 pinout, UCC57108BQDRQ1 application, or UCC57108BQDRQ1 equivalent, key selection criteria include its 6.5 V DESAT threshold, soft turn-off pulldown resistance of 35 Ω, UVLO options (8 V or 12.5 V), 5 V reference output capability, and SOIC-8 package compatibility with high-noise automotive power stages.
Technical Context
The UCC57108BQDRQ1 implements a rail-to-rail NMOS/PMOS output stage with intrinsic bootstrap-assisted pull-up, enabling fast switching into high-capacitance IGBT/SiC gates while maintaining robustness against ground bounce via –5 V tolerant inputs. Its DESAT circuit activates only during ON-state, using a 250 µA internal charge current and deglitch filter to reject false triggers.
Functional safety features include independent UVLO monitoring per bias rail (VDD and VEE), thermal shutdown at 180°C with 30°C hysteresis, and active-low FLT reporting synchronized to fault detection - all implemented without external components beyond the DESAT blanking capacitor and FLT pull-up resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | ±3 A - drives high-Qg SiC MOSFETs and IGBTs with minimal Miller plateau time |
| Propagation Delay | 26 ns typical - enables >2 MHz switching in high-frequency traction inverters |
| DESAT Threshold | 6.5 V (typ) - detects overcurrent in 650 V–1200 V SiC/IGBT systems with emitter sensing |
| VDD UVLO Options | 8 V or 12.5 V rising threshold - supports flexible bias supply design across 12 V and 24 V automotive rails |
| VREF Output | 5 V ±0.03 V at 20 mA - powers isolated gate driver bias supplies or level-shifting circuits |
| Input Voltage Range | –5 V to 26 V - withstands ground bounce transients in high-dI/dt motor drive PCB layouts |
| Junction Temp Range | –40°C to +150°C - meets AEC-Q100 Grade 1 requirements for under-hood automotive placement |
Pinout & Package
UCC57108BQDRQ1 is housed in a standard 5 mm × 4 mm SOIC-8 (D package) with Gull-wing leads, optimized for thermal dissipation in high-power automotive modules. Pin 1 is IN; Pin 2 is VREF; Pin 3 is FLT; Pin 4 is DESAT; Pin 5 is VDD; Pin 6 is OUT; Pin 7 is GND; Pin 8 is VEE.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | PWM input | TTL-compatible non-inverting logic input, independent of VDD, with 1 V hysteresis for noise immunity |
| VREF (Pin 2) | Reference output | Stable 5 V output sourcing up to 20 mA - used for auxiliary bias or sensing circuitry |
| FLT (Pin 3) | Fault report | Active-low open-drain output signaling DESAT, UVLO, or thermal faults to MCU/DSP |
| DESAT (Pin 4) | Desaturation sense | High-impedance input for external DESAT network; enabled only during driver ON-state |
| VDD (Pin 5) | Positive supply | Bias rail (8–26 V); includes UVLO monitoring with selectable 8 V or 12.5 V thresholds |
| OUT (Pin 6) | Driver output | Low-side gate drive output with ±3 A peak capability and rail-to-rail swing (GND to VDD) |
| GND (Pin 7) | Signal ground | Common reference for logic, fault reporting, and DESAT sensing - shared with power ground |
| VEE (Pin 8) | Negative bias supply | Supports negative gate drive (–15 V max) for enhanced IGBT/SiC turn-off robustness |
Key Features
| Feature | Design Value |
|---|---|
| Soft Turn-Off | 35 Ω internal pulldown resistance limits di/dt during DESAT fault, reducing switch overshoot and short-circuit energy |
| DESAT Protection | Programmable blanking (150 ns) + deglitch filter (100–150 ns) prevents false triggering from switching transients |
| Input Robustness | –5 V tolerance on IN and EN pins accommodates >2 V/ns ground bounce without latch-up or damage |
| Thermal Shutdown | 180°C trip point with 30°C hysteresis ensures reliable protection during sustained overload or cooling failure |
| UVLO Flexibility | Dual-threshold option (8 V or 12.5 V) allows use with buck-derived or direct-battery bias supplies |
Applications
| HEV/EV PTC Heater Control | Traction Inverter Active Discharge |
|---|---|
Use Scenario: High-power resistive heating in battery thermal management systems, requiring rapid gate control and fault containment during short-circuit events. IC Role / Device Role / Timing Role: Low-side gate driver for IGBTs switching 400–800 V DC bus, providing DESAT monitoring and soft turn-off to limit fault energy. Use Value: Enables safe, certified operation under AEC-Q100 Grade 1 conditions with <250 ns fault-to-FLT response and integrated 5 V reference for auxiliary sensing. |
Use Scenario: Controlled discharge of high-voltage DC-link capacitors after vehicle shutdown to meet ISO 6469 safety requirements. IC Role / Device Role / Timing Role: Gate driver for discharge FETs, activated only when main inverter is off - leveraging DESAT pin as enable signal via external voltage divider. Use Value: Eliminates need for separate controller logic by using built-in DESAT activation window and FLT feedback for system-level discharge confirmation. |
| Residential EV Charger Power Stage | HVAC Compressor Inverter |
Use Scenario: Bidirectional AC/DC and DC/DC conversion in Level 2 chargers, where reliability and EMI control are critical in consumer environments. IC Role / Device Role / Timing Role: Low-side driver for SiC MOSFETs in totem-pole PFC and isolated DC/DC stages, using tight 26 ns propagation delay for precise timing alignment. Use Value: Reduces gate drive losses and improves efficiency via ±3 A symmetrical drive strength and low 1 Ω pulldown resistance. |
Use Scenario: Variable-speed compressor control in electric vehicle HVAC systems, operating continuously under high ambient temperatures. IC Role / Device Role / Timing Role: Gate driver for 650 V IGBTs in 3-phase inverter bridge, relying on 150°C junction rating and thermal shutdown for long-term reliability. Use Value: Ensures uninterrupted operation in under-dash locations by sustaining full output drive at 150°C TJ with no derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-side gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC57102BQDRQ1 | Same SOIC-8 package and pinout; identical electrical specs except UVLO set to 12.5 V (non-configurable) | Optimized for 24 V bias systems where 8 V UVLO is unnecessary; no impact on DESAT or thermal behavior | Select UCC57102BQDRQ1 when fixed 12.5 V UVLO simplifies BOM and eliminates configuration risk. |
| UCC5870QDWQ1 | Higher 6 A peak drive, integrated isolated DC/DC, but larger SOIC-16 package and no VREF output | Targets higher-power traction inverters needing isolation; lacks 5 V reference for auxiliary circuitry | Choose UCC5870QDWQ1 only when isolation and >4 A drive are mandatory - not a drop-in replacement. |
Compared with UCC57108BQDRQ1, UCC57102BQDRQ1 offers identical performance with fixed 12.5 V UVLO, while UCC5870QDWQ1 trades VREF and compact SOIC-8 for isolation and higher drive - making UCC57108BQDRQ1 optimal for cost-sensitive, space-constrained PTC and auxiliary inverter designs.
Availability
UCC57108BQDRQ1 is available at Aetrix Electronics and suitable for HEV/EV PTC heaters, traction inverter active discharge circuits, and residential EV charger power stages requiring stable component supply, automotive-grade traceability, and long-lifecycle support.
Supply support for UCC57108BQDRQ1 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 focused on analog, embedded processing, and automotive ICs, with decades of expertise in high-reliability power management solutions.
The UCC5710x-Q1 product line delivers AEC-Q100 qualified low-side gate drivers for high-power automotive subsystems - designed specifically for robust SiC/IGBT control in PTC heaters, active discharge, and auxiliary inverters under harsh thermal and EMI conditions.
FAQ
What is the UVLO configuration for UCC57108BQDRQ1?
The UCC57108BQDRQ1 features an 8 V UVLO rising threshold (7.6–8.4 V) with 1 V hysteresis, enabling reliable startup from 12 V automotive systems while preventing oscillation near brownout conditions. This setting is factory-configured and cannot be changed externally. The UCC57108BQDRQ1 datasheet specifies that UVLO behavior remains stable across –40°C to +150°C, ensuring consistent operation in under-hood environments.
Does UCC57108BQDRQ1 support negative gate drive?
Yes, UCC57108BQDRQ1 supports negative gate drive via its dedicated VEE pin (Pin 8), rated for –15 V to 0 V relative to GND. This enables active Miller clamping and improved IGBT/SiC turn-off robustness in high-dV/dt applications. The device maintains full ±3 A drive strength and DESAT functionality even with negative bias applied, as confirmed in Section 5.4 of the UCC57108BQDRQ1 datasheet.
How does DESAT protection work on UCC57108BQDRQ1?
UCC57108BQDRQ1 implements DESAT protection with a 6.5 V threshold referenced to GND, 150 ns leading-edge blanking, and a 100–150 ns deglitch filter. The internal 250 µA charge current activates only during the ON-state, eliminating false triggers during switching transitions. Upon fault detection, UCC57108BQDRQ1 initiates soft turn-off with 35 Ω pulldown and asserts FLT within 135–250 ns - all without external comparators or timers.
Can UCC57108BQDRQ1 drive both SiC MOSFETs and IGBTs?
Yes, UCC57108BQDRQ1 is explicitly qualified for driving both SiC MOSFETs and IGBTs, with ±3 A peak source/sink current, rail-to-rail output swing, and 26 ns propagation delay optimized for high-speed switching. Its –5 V input tolerance, DESAT threshold, and soft turn-off behavior are validated for 650 V–1200 V devices in automotive traction and PTC applications per the UCC57108BQDRQ1 datasheet Sections 1 and 6.3.4.
What is the purpose of the VREF pin on UCC57108BQDRQ1?
The VREF pin (Pin 2) on UCC57108BQDRQ1 provides a precision 5 V output (±0.03 V at 20 mA) generated internally by an LDO, used to power isolated gate driver bias supplies, level-shifters, or current-sense amplifiers. Unlike external regulators, VREF remains active during UVLO and thermal shutdown, supporting fail-safe auxiliary circuit operation - a feature confirmed in UCC57108BQDRQ1's functional block diagram and Section 6.3.6.
UCC57108BQDRQ1 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
- Programmable:
- -
- Driven Configuration:
- Low-Side
- Channel Type:
- Single
- Number of Drivers:
- 1
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 8.5V ~ 26V
- Logic Voltage - VIL, VIH:
- 1.6V, 1.8V
- Current - Peak Output (Source, Sink):
- 3A, 3A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 8ns, 14ns
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
UCC57108BQDRQ1 FAQ
1.How can I place an order for UCC57108BQDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC57108BQDRQ1 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 UCC57108BQDRQ1 reliable?
The price and inventory of UCC57108BQDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC57108BQDRQ1 is usually 5 days.
3.What payment methods are accepted for UCC57108BQDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC57108BQDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC57108BQDRQ1?
UCC57108BQDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC57108BQDRQ1 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 UCC57108BQDRQ1?
For technical support, including UCC57108BQDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC57108BQDRQ1 requirements.
6.How does Aetrix verify that UCC57108BQDRQ1 is sourced from the original manufacturer or authorized distributors?
All UCC57108BQDRQ1 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 UCC57108BQDRQ1 meets industry standards.
7.What is the process for return or replacement of UCC57108BQDRQ1?
All UCC57108BQDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with UCC57108BQDRQ1, 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 UCC57108BQDRQ1 part is unused and in its original packaging.
Return procedure for UCC57108BQDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCC57108BQDRQ1 Tags
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ZXGD3009E6TA
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1EDN7512BXTSA1
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UCC27517DBVR
Texas Instruments
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2EDN7524RXTMA1
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