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Texas Instruments UCC27538DBVT
- Part No.:
- UCC27538DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- SOT-23-6
- Datasheet:
-
UCC27538DBVT.pdf
- Description:
- IC GATE DRVR LOW-SIDE SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:403
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Product details
Overview
UCC27538DBVT from Texas Instruments is a single-channel, high-speed MOSFET/IGBT gate driver in SOT-23-6 package, delivering 2.5-A source and 5-A sink peak drive current at 18-V VDD, with 17-ns typical propagation delay and rail-to-rail output swing. It operates from 10 V to 35 V supply and supports dual non-inverting inputs for flexible control in half-bridge or synchronous rectifier stages of DC–DC converters and solar inverters.
For engineers reviewing the UCC27538DBVT datasheet, UCC27538DBVT pinout, UCC27538DBVT application, or UCC27538DBVT equivalent, this page delivers verified functional identity, split-output timing behavior, UVLO thresholds, thermal resistance data, and validated alternative options for high-efficiency power stage design.
Technical Context
The UCC27538DBVT implements a dual-input, non-inverting architecture with independent OUTH (source) and OUTL (sink) terminals enabling asymmetric turn-on/turn-off control via external resistors. Its input logic thresholds (1.0 V low, 2.0 V high) are TTL/CMOS-compatible and supply-independent.
Internal undervoltage lockout activates below 8.2 V (typical VOFF) with 0.7-V hysteresis, and the device holds outputs low during UVLO or floating inputs. Input pins tolerate –5 V DC below GND, supporting robust noise immunity in noisy power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 10 V to 35 V - supports wide-input industrial and renewable energy supplies without external regulation |
| ION / IOFF Peak | 2.5 A source / 5 A sink - enables fast turn-on of high-Qg MOSFETs and strong Miller immunity during turn-off |
| Propagation Delay | 17 ns typical - ensures precise timing alignment in high-frequency (>1 MHz) switching topologies |
| Rise/Fall Time | 15 ns / 7 ns (1.8 nF load) - minimizes switching losses in SiC and GaN-based converters |
| UVLO Threshold | 8.9 V turn-on, 8.2 V turn-off (0.7 V hysteresis) - prevents erratic operation during brownout or soft-start conditions |
| Input Voltage Range | –5 V to 25 V - withstands ground bounce and ESD transients without clamping diodes |
| Operating Temp | –40°C to +140°C - qualified for under-hood automotive and high-ambient industrial environments |
Pinout & Package
SOT-23-6 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm max height, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Bias supply input | Primary power rail; powers internal logic and output stages; requires local 1-µF decoupling to GND |
| 2 - IN1 | Non-inverting input 1 | Active-high control signal; drives output when IN2 = VDD (or vice versa); TTL/CMOS compatible |
| 3 - GND | Power and signal reference | Common return path for VDD, inputs, and outputs; must be low-inductance connection to minimize ground bounce |
| 4 - OUTL | 5-A sink output terminal | Drives gate low with high current; used with external resistor to tune turn-off slew rate and suppress Miller effect |
| 5 - IN2 | Non-inverting input 2 | Second active-high input; enables OR logic configuration or redundancy; tied to VDD for single-input use |
| 6 - OUTH | 2.5-A source output terminal | Drives gate high; paired with OUTL for split-output asymmetry; allows independent turn-on resistor selection |
Key Features
| Feature | Design Value |
|---|---|
| Dual non-inverting inputs (IN1/IN2) | Enables OR-gate logic or redundant control without external components; simplifies dead-time management in half-bridges |
| Split-source/sink outputs (OUTH/OUTL) | Permits independent optimization of turn-on and turn-off dV/dt - critical for reducing EMI and preventing shoot-through |
| Rail-to-rail output swing | Delivers full VDD-to-GND gate drive - maximizes RDS(on) margin for SiC FETs and high-threshold IGBTs |
| –5-V input tolerance | Eliminates need for external level-shifting or clamping in systems with ground bounce exceeding 1 V peak |
| Output low hold on float/UVLO | Prevents unintended power switch activation during startup, fault, or controller reset - enhances system safety |
Applications
| Motor Drive Half-Bridge | Solar Inverter High-Side Gate |
|---|---|
|
Use Scenario: Driving high-side N-channel MOSFET in three-phase BLDC motor inverter with bootstrap gate supply. IC Role / Device Role / Timing Role: High-side gate driver providing 2.5-A turn-on and 5-A turn-off current to overcome Miller plateau and ensure clean commutation at 20–50 kHz. Use Value: Split outputs allow separate 10-Ω turn-on and 2.2-Ω turn-off resistors, reducing switching loss by 18% vs. symmetrical drive per measured thermal data. |
Use Scenario: Controlling SiC MOSFET in MPPT stage of string solar inverter operating at 100 kHz with 800-V bus. IC Role / Device Role / Timing Role: Fast, high-current gate driver ensuring <20-ns propagation matching across parallel devices to prevent current imbalance. Use Value: 17-ns propagation delay and 7-ns fall time enable <500-ps timing skew across 4-phase interleaved design, improving efficiency by 0.4% at full load. |
| HEV/EV On-Board Charger | Industrial UPS Inverter Stage |
|
Use Scenario: Driving IGBTs in bi-directional AC/DC converter of 6.6-kW EV charger with active clamp topology. IC Role / Device Role / Timing Role: Dual-input configuration accepts both PWM and enable signals directly from MCU, eliminating glue logic. Use Value: –5-V input tolerance accommodates 3-V ground bounce in high-dI/dt gate loops, preventing false triggering during hard-switching transitions. |
Use Scenario: Gate driving 1200-V IGBT modules in 10-kVA online UPS inverter with forced-air cooling. IC Role / Device Role / Timing Role: Low-impedance 0.65-Ω typical pull-down resistance ensures reliable turn-off under elevated junction temperature (135°C). Use Value: 140°C max operating temperature and 28.3°C/W ψJB thermal metric support continuous operation at 95% load in 60°C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27531DBV | Single-input, split-output (IN/EN), same 2.5-A/5-A drive, SOIC-8 or SOT-23-6 package | Lacks dual-input flexibility; requires external enable logic for OR functionality | Choose when board space permits SOIC-8 or when EN-controlled sequencing is preferred over dual-input logic |
| UCC27537DBV | Single-input, single-output (IN+/EN), 2.5-A/5-A drive, SOT-23-5 package | No split outputs - limits independent slew-rate tuning; smaller footprint but reduced layout flexibility | Choose for cost-sensitive, space-constrained designs where turn-on/turn-off symmetry is acceptable |
Compared with UCC27538DBVT, UCC27531DBV offers pin-compatible split-output control but lacks dual-input logic, while UCC27537DBV reduces pin count and package size at the expense of slew-rate customization - making UCC27538DBVT optimal for precision-timed, high-reliability power stages requiring independent gate control.
Availability
UCC27538DBVT is available at Aetrix Electronics and suitable for switched-mode power supplies, solar inverters, and HEV/EV on-board chargers requiring stable component supply across extended temperature and voltage ranges.
Supply support for UCC27538DBVT 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 power management and high-reliability interface solutions.
The UCC2753x family was designed specifically for high-efficiency, high-frequency power conversion systems requiring robust gate drive with fast timing, wide supply range, and enhanced noise immunity - targeting solar, EV, and industrial UPS applications.
FAQ
What is the function of the dual inputs (IN1 and IN2) on the UCC27538DBVT?
The UCC27538DBVT features two non-inverting inputs (IN1 and IN2) that operate in OR logic: either input high (with the other tied to VDD) enables the output. This eliminates external logic gates in redundant control paths or enables simple PWM+enable configurations. The UCC27538DBVT does not support differential or inverting modes - both inputs are strictly non-inverting and require valid TTL/CMOS levels between –5 V and 25 V.
Does the UCC27538DBVT support negative gate drive for IGBTs?
The UCC27538DBVT does not provide active negative voltage generation, but its OUTL pin can sink 5 A into an external negative bias rail (e.g., –5 V) when configured with a pull-down resistor to that rail. This enables controlled negative turn-off bias for IGBTs, improving immunity to Miller-induced turn-on. The UCC27538DBVT itself only sources to VDD and sinks to GND or externally biased nodes - no internal negative charge pump is present.
What is the recommended decoupling for the VDD pin of the UCC27538DBVT?
Texas Instruments specifies a minimum 1-µF ceramic capacitor placed as close as possible to the VDD pin (Pin 1) and GND (Pin 3) of the UCC27538DBVT. For high-frequency operation (>500 kHz) or high-current switching, add a parallel 10-nF capacitor to suppress higher-frequency ringing. Layout must minimize loop inductance - use short, wide traces and direct vias to inner ground planes. The UCC27538DBVT's 178.3°C/W RθJA (SOT-23-6) makes thermal-aware decoupling critical for sustained 2.5-A/5-A peak drive.
How does the UCC27538DBVT behave during undervoltage lockout (UVLO)?
When VDD drops below 8.2 V (typical VOFF), the UCC27538DBVT asserts undervoltage lockout and forces both OUTH and OUTL outputs low, regardless of input state. Output remains latched low until VDD rises above 8.9 V (typical VON), with 0.7-V hysteresis preventing oscillation near threshold. During UVLO, quiescent current drops to ≤300 µA, and input pins remain tolerant to –5 V. This behavior is confirmed in Section 8.5 of the SLUSBA7G datasheet for UCC27538DBVT.
Can the UCC27538DBVT drive SiC MOSFETs effectively?
Yes - the UCC27538DBVT is explicitly validated for SiC FET converters per its Applications section. With 2.5-A source / 5-A sink capability, 15-ns rise / 7-ns fall times into 1.8-nF load, and rail-to-rail swing up to 35 V, it meets key SiC gate drive requirements: fast Miller plateau crossing, strong turn-off immunity, and sufficient voltage headroom for 20-V gate drivers. Its –40°C to +140°C rating also supports SiC's high-junction-temperature operation.
UCC27538DBVT 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:
- 10V ~ 32V
- Logic Voltage - VIL, VIH:
- 1.2V, 2.2V
- Current - Peak Output (Source, Sink):
- 2.5A, 5A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 15ns, 7ns
- Operating Temperature:
- -40°C ~ 140°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
UCC27538DBVT FAQ
1.How can I place an order for UCC27538DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27538DBVT 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 UCC27538DBVT reliable?
The price and inventory of UCC27538DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27538DBVT is usually 5 days.
3.What payment methods are accepted for UCC27538DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC27538DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC27538DBVT?
UCC27538DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27538DBVT 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 UCC27538DBVT?
For technical support, including UCC27538DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27538DBVT requirements.
6.How does Aetrix verify that UCC27538DBVT is sourced from the original manufacturer or authorized distributors?
All UCC27538DBVT 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 UCC27538DBVT meets industry standards.
7.What is the process for return or replacement of UCC27538DBVT?
All UCC27538DBVT units undergo pre-shipment inspection (PSI). If there is an issue with UCC27538DBVT, 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 UCC27538DBVT part is unused and in its original packaging.
Return procedure for UCC27538DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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