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Texas Instruments UCC27511AQDBVRQ1
- Part No.:
- UCC27511AQDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- SOT-23-6
- Datasheet:
-
UCC27511AQDBVRQ1.pdf
- Description:
- IC GATE DRVR LOW-SIDE SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
UCC27511AQDBVRQ1 from Texas Instruments is an automotive-grade single-channel low-side gate driver for MOSFETs, IGBTs, and GaN power devices, delivering 4A peak source and 8A peak sink current with 13ns typical propagation delay, 8ns/7ns rise/fall times, and operation across 4.5V–18V supply and –40°C to 140°C junction temperature - deployed in high-frequency DC-DC converters and solar inverters.
For engineers reviewing the UCC27511AQDBVRQ1 datasheet, UCC27511AQDBVRQ1 pinout, UCC27511AQDBVRQ1 application, or UCC27511AQDBVRQ1 equivalent, key selection considerations include split-output slew control, Miller immunity via asymmetrical sink strength, AEC-Q100 Grade 1 qualification, TTL/CMOS input thresholds independent of VDD, and UVLO-enabled glitch-free power sequencing.
Technical Context
The UCC27511AQDBVRQ1 employs a dual-input architecture supporting both inverting (IN–) and non-inverting (IN+) configurations, with unused input usable as enable/disable control. Its internal UVLO circuit holds outputs low below 4.2V (typical turn-on threshold) with 300mV hysteresis to prevent chatter during power-up/down transients.
Split output terminals (OUTH and OUTL) enable independent gate resistor placement for precise turn-on/turn-off timing control without external diodes. The driver's 0.375Ω typical pulldown resistance and 8A sink capability directly suppress parasitic Miller-induced turn-on in high-dV/dt switching environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Source/Sink Current | 4A source / 8A sink - enables fast charging/discharging of large gate capacitances in GaN and SiC switches |
| Propagation Delay | 13ns typical - supports >50 MHz switching frequencies with minimal timing uncertainty |
| Rise/Fall Time | 8ns / 7ns typical (1.8nF load) - reduces switching losses and EMI generation |
| Supply Voltage Range | 4.5V to 18V - compatible with 5V, 12V, and 15V bias rails; supports low-voltage GaN gate drive |
| Operating Temperature | –40°C to 140°C junction - qualified for under-hood automotive and industrial motor control |
| Input Threshold Logic | TTL/CMOS-compatible, VIL = 1.2V typ, VIH = 2.2V typ, 1V hysteresis - robust against noise on 3.3V/5V MCU PWM signals |
| UVLO Threshold | 4.2V turn-on / 3.9V turn-off (300mV hysteresis) - ensures clean output state during brown-out conditions |
Pinout & Package
UCC27511AQDBVRQ1 is housed in a 6-pin SOT-23 (DBV) package measuring 2.90mm × 1.60mm, optimized for space-constrained automotive and industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Bias supply input | Accepts 4.5V–18V; powers internal logic and output stage; triggers UVLO protection when out-of-range |
| OUTH (Pin 2) | Source current output | Drives gate high through external resistor; enables independent turn-on speed tuning |
| OUTL (Pin 3) | Sink current output | Drives gate low through external resistor; provides 8A sink strength for Miller immunity |
| GND (Pin 4) | Reference ground | Common return for all signals and currents; must be low-inductance connection for stability |
| IN– (Pin 5) | Inverting input | Active-low control input; when used, IN+ must be tied to VDD; floating state forces output low |
| IN+ (Pin 6) | Non-inverting input | Active-high control input; when used, IN– must be tied to GND; floating state forces output low |
Key Features
| Feature | Design Value |
|---|---|
| Split output configuration (OUTH/OUTL) | Enables independent gate resistor selection for precise rise/fall time control without diode-based solutions |
| Asymmetrical 4A/8A drive | 8A sink current minimizes risk of false turn-on during high dV/dt transitions in half-bridge topologies |
| Dual-input logic (IN+/IN–) | Single device supports both inverting and non-inverting PWM interfaces; unused pin serves as hardware enable |
| VDD-independent input thresholds | Allows direct interfacing with 3.3V microcontrollers even when VDD = 12V, simplifying level-shifting design |
| Input pin fault tolerance | Internal pullup/pulldown resistors force output low if either IN+ or IN– floats - prevents unintended switch activation |
Applications
| Motor Control Systems | Solar Power Inverters |
|---|---|
Use Scenario: Driving high-side and low-side GaN FETs in three-phase BLDC motor drivers operating at 100 kHz switching frequency. IC Role / Device Role / Timing Role: Low-side gate driver providing 8A sink current to rapidly discharge gate capacitance and suppress Miller-induced shoot-through. Use Value: Enables stable 100 kHz operation with <13ns propagation delay matching controller timing budgets and reducing dead-time uncertainty. | Use Scenario: Gate driving SiC MOSFETs in MPPT DC-DC boost stages of string inverters exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Automotive-qualified low-side driver delivering rail-to-rail output swing and UVLO protection across –40°C to 140°C junction range. Use Value: Ensures reliable startup and shutdown sequencing under solar array voltage droop while maintaining AEC-Q100 compliance. |
| Automotive DC-DC Converters | Industrial UPS Systems |
Use Scenario: Controlling synchronous rectifiers in 48V–12V bidirectional buck-boost converters within EV power distribution units. IC Role / Device Role / Timing Role: High-speed gate driver with split outputs enabling independent optimization of turn-on/turn-off slew rates to balance conduction loss and EMI. Use Value: Reduces switching losses by 12% versus discrete BJT solutions while meeting CISPR-25 Class 5 EMI limits. | Use Scenario: Driving IGBTs in online double-conversion UPS inverters requiring fail-safe output behavior during AC mains failure. IC Role / Device Role / Timing Role: Low-side driver with UVLO-hold-low functionality ensuring gate remains off during brown-out or undervoltage events. Use Value: Prevents uncontrolled IGBT turn-on during backup battery switchover, eliminating risk of bus short-circuit faults. |
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 |
|---|---|---|---|
| UCC27517AQDRQ1 | Same pinout, 4A/6A drive (lower sink), integrated 5V LDO for auxiliary bias | Limited Miller immunity due to reduced 6A sink; suited for lower dV/dt Si MOSFETs only | Select when auxiliary 5V rail needed and GaN/SiC use case is not required |
| LM5114SDX/NOPB | 8-pin SOIC, 1.5A/3A drive, no split output, no AEC-Q100 qualification | Lower drive strength and no automotive qualification; requires external diode for slew control | Select for cost-sensitive industrial non-automotive designs where AEC-Q100 is not mandated |
Compared with UCC27511AQDBVRQ1, UCC27517AQDRQ1 trades 2A sink current for integrated bias regulation, while LM5114SDX/NOPB offers lower cost and footprint at the expense of automotive qualification, Miller immunity, and independent slew control - making UCC27511AQDBVRQ1 optimal for high-reliability GaN/SiC systems demanding AEC-Q100 Grade 1 performance.
Availability
UCC27511AQDBVRQ1 is available at Aetrix Electronics and suitable for automotive power conversion, solar inverter gate drive, and industrial motor control applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for UCC27511AQDBVRQ1 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, embedded processing, and power management technologies, with leadership in automotive-qualified ICs and high-performance gate drivers.
The UCC27511AQDBVRQ1 belongs to TI's UCC275xx-Q1 automotive gate driver family, designed specifically for high-speed, high-reliability switching in electric vehicle powertrain, ADAS, and energy infrastructure systems.
FAQ
What is the maximum operating junction temperature for the UCC27511AQDBVRQ1?
The UCC27511AQDBVRQ1 is rated for a maximum junction temperature of 140°C, validated per AEC-Q100 Grade 1 requirements covering –40°C to 125°C ambient operation. This rating enables deployment in under-hood automotive environments and high-power-density industrial converters where thermal margins are constrained. The device's 217.8°C/W junction-to-ambient thermal resistance (RθJA) in the DBV package supports this rating when mounted on standard 2-layer PCBs with adequate copper area.
Does the UCC27511AQDBVRQ1 support both inverting and non-inverting configurations?
Yes, the UCC27511AQDBVRQ1 features dual-input logic with dedicated IN+ (non-inverting) and IN– (inverting) pins. When using IN+, tie IN– to GND to enable output; when using IN–, tie IN+ to VDD. Either unused pin can serve as a hardware enable/disable signal. This flexibility eliminates the need for external inverters or additional logic in digital power controller interfaces, and is explicitly documented in Section 6.3.3 and Figure 6-4 of the UCC27511AQDBVRQ1 datasheet.
How does the split output (OUTH/OUTL) improve gate drive performance in the UCC27511AQDBVRQ1?
The split output structure of the UCC27511AQDBVRQ1 allows independent placement of series resistors on OUTH (turn-on path) and OUTL (turn-off path), enabling precise control of rise and fall times without external diodes. This directly improves EMI profile and reduces switching losses compared to single-output drivers. The architecture also isolates turn-on and turn-off current paths, enhancing immunity to Miller feedback - a critical advantage when driving GaN and SiC devices with high dV/dt characteristics.
Is the UCC27511AQDBVRQ1 pin-compatible with earlier UCC27511 variants?
No, the UCC27511AQDBVRQ1 is not pin-compatible with non-Q1 versions such as UCC27511DBVR. While both use the DBV (SOT-23-6) package and share identical pin numbering and functions, the Q1 variant includes enhanced ESD protection (CDM C4B), extended temperature validation (140°C TJ), and automotive-specific reliability testing per AEC-Q100. These differences require verification of layout compatibility and system-level stress testing before substitution.
What happens to the outputs of the UCC27511AQDBVRQ1 during VDD undervoltage lockout?
During VDD undervoltage lockout (UVLO), the UCC27511AQDBVRQ1 actively holds both OUTH and OUTL outputs low regardless of input states - ensuring glitch-free operation at power-up and power-down. The UVLO turn-on threshold is 4.2V (typical) with 300mV hysteresis, preventing oscillation during supply ramping. This behavior is guaranteed across –40°C to 140°C and is a core safety feature for automotive and industrial systems where uncontrolled gate activation could cause catastrophic failure.
UCC27511AQDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Single
- Number of Drivers:
- 1
- Gate Type:
- IGBT, N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 18V
- Logic Voltage - VIL, VIH:
- 1V, 2.4V
- Current - Peak Output (Source, Sink):
- 4A, 8A
- Input Type:
- Inverting, Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 8ns, 7ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
UCC27511AQDBVRQ1 FAQ
1.How can I place an order for UCC27511AQDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27511AQDBVRQ1 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 UCC27511AQDBVRQ1 reliable?
The price and inventory of UCC27511AQDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27511AQDBVRQ1 is usually 5 days.
3.What payment methods are accepted for UCC27511AQDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC27511AQDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC27511AQDBVRQ1?
UCC27511AQDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27511AQDBVRQ1 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 UCC27511AQDBVRQ1?
For technical support, including UCC27511AQDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27511AQDBVRQ1 requirements.
6.How does Aetrix verify that UCC27511AQDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All UCC27511AQDBVRQ1 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 UCC27511AQDBVRQ1 meets industry standards.
7.What is the process for return or replacement of UCC27511AQDBVRQ1?
All UCC27511AQDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with UCC27511AQDBVRQ1, 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 UCC27511AQDBVRQ1 part is unused and in its original packaging.
Return procedure for UCC27511AQDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCC27511AQDBVRQ1 Tags
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ZXGD3009E6TA
Diodes Incorporated
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1EDN7512BXTSA1
Infineon Technologies
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UCC27517DBVR
Texas Instruments
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MCP1416T-E/OT
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MCP1402T-E/OT
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MCP1415T-E/OT
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MCP1401T-E/OT
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IX4428NTR
Littelfuse Inc.
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IRS2005STRPBF
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IRS2008STRPBF
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IX4310TTR
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2EDN7524RXTMA1
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