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Texas Instruments UCC27444QDRQ1
- Part No.:
- UCC27444QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC27444QDRQ1.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,810
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Product details
Overview
UCC27444QDRQ1 from Texas Instruments is a dual-channel, automotive-grade, low-side gate driver IC designed to drive MOSFETs and GaN power switches in high-frequency switching stages. It delivers 4-A peak source/sink current per channel, features 18-ns typical propagation delay and 1-ns typical inter-channel delay matching, and operates across 4.5 V to 18 V VDD with –5-V input tolerance - enabling robust operation in noisy automotive DC/DC converters and on-board chargers.
For engineers reviewing the UCC27444QDRQ1 datasheet, UCC27444QDRQ1 pinout, UCC27444QDRQ1 application, or UCC27444QDRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification (–40°C to +125°C), independent enable inputs per channel, SOIC-8 and VSSOP-8 PowerPAD™ package options, and rail-to-rail output stage with reverse-current tolerance for transformer-coupled gate drive.
Technical Context
The UCC27444QDRQ1 implements two independent TTL-compatible input stages with fixed 1.2 V / 2.2 V thresholds, each feeding a P-channel/N-channel MOS output stage delivering 4-A peak drive. Its internal power-on-reset (POR) holds outputs low until VDD exceeds 2.1 V, ensuring glitch-free startup.
Each channel includes an active-high enable pin with 100-kΩ internal pullup and TTL-compatible threshold (1.1–2.7 V), allowing direct compatibility with 3.3-V/5-V controllers. The device supports transformer-coupled drive via its –5-V input capability and 4-A reverse-current tolerance on OUTA/OUTB, eliminating need for external rectification diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 4.5 V to 18 V - supports wide-input automotive power rails including 12-V battery systems with transient headroom. |
| Peak Drive Current | ±4 A per channel - reduces MOSFET/GaN switch rise/fall times, lowers switching losses, and enables >1-MHz operation. |
| Propagation Delay | 18 ns typical - improves dead-time control accuracy and control-loop bandwidth in PFC and DC/DC topologies. |
| Delay Matching | 1 ns typical between channels - ensures simultaneous turn-on of paralleled power devices, minimizing current imbalance. |
| Input Voltage Range | –5 V to VDD+0.3 V - withstands ground bounce in high-dI/dt automotive environments without latch-up or malfunction. |
| Operating Temp | –40°C to +125°C junction - qualified per AEC-Q100 Grade 1 for under-hood and traction inverter applications. |
| POR Threshold | Rising: 2.1–4.0 V; Hysteresis: 0.3 V - guarantees predictable low-state output during power-up/power-down sequences. |
Pinout & Package
UCC27444QDRQ1 is available in SOIC-8 (D) and VSSOP-8 (DGN) PowerPAD™ packages. Both feature exposed thermal pads connected to GND for enhanced thermal dissipation in high-power-density automotive designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ENA (Pin 1) | Channel A Enable Input | Active-high TTL input; internally pulled up to VDD (100 kΩ); floating = enabled - allows drop-in replacement of legacy TI drivers. |
| INA (Pin 2) | Channel A Non-Inverting Input | TTL-compatible (1.2 V low / 2.2 V high); accepts –5 V - eliminates need for level shifters when interfacing with noisy controller outputs. |
| GND (Pin 3) | Power & Signal Reference | Common return for all signals and VDD bypass capacitors; thermal pad must be soldered to large GND copper plane. |
| INB (Pin 4) | Channel B Non-Inverting Input | Functionally identical to INA; supports complementary or independent PWM inputs for dual-switch control. |
| OUTB (Pin 5) | Channel B Output | Rail-to-rail (GND to VDD), ±4-A capable; tolerates 4-A reverse current - suitable for transformer-coupled gate drive without rectifiers. |
| VDD (Pin 6) | Bias Supply Input | 4.5–18 V input; requires ≥1 µF + 0.1 µF ceramic bypass to GND - powers both channels and internal logic. |
| OUTA (Pin 7) | Channel A Output | Identical to OUTB; low-impedance P/N-MOS stage enables fast Miller plateau charging and low VOL/VOH. |
| ENB (Pin 8) | Channel B Enable Input | Independent of ENA; enables per-channel shutdown for fault response or light-load efficiency optimization in synchronous rectifiers. |
Key Features
| Feature | Design Value |
|---|---|
| –5-V Input Tolerance | Prevents false triggering during ground bounce in high-dI/dt automotive power stages, enabling direct connection to gate-drive transformers. |
| 18-ns Propagation Delay | Enables precise timing control in >1-MHz switching converters, improving pulse-width utilization and transient response. |
| 1-ns Inter-Channel Delay Match | Ensures matched turn-on of paralleled MOSFETs in PFC or phase-shifted full-bridge topologies, reducing current imbalance and thermal stress. |
| VDD POR Protection | Holds both outputs low until VDD stabilizes above 2.1 V - eliminates power-up glitches that could inadvertently turn on half-bridge legs. |
| Independent ENx Pins | Allows per-channel disable for fault isolation or synchronous rectifier control without affecting the other channel's operation. |
Applications
| On-Board Charger (OBC) | Automotive DC/DC Converter |
|---|---|
Use Scenario: Bidirectional 3.3-kW OBC using interleaved LLC topology with paralleled GaN FETs per leg. IC Role / Device Role / Timing Role: Dual-channel low-side driver controlling synchronous rectifier FETs on secondary side; tight delay matching ensures balanced conduction across paralleled devices. Use Value: 4-A drive strength minimizes GaN gate charge time; –5-V input tolerance prevents misfiring during high-frequency transformer ringing. | Use Scenario: 48-V to 12-V bidirectional DC/DC converter in 48-V mild-hybrid architecture with dual-phase synchronous buck. IC Role / Device Role / Timing Role: Driving high-side and low-side FETs in each phase via bootstrap or isolated supply; independent EN pins enable phase shedding at light load. Use Value: 18-ns propagation delay improves dead-time margin; AEC-Q100 Grade 1 rating ensures reliability in under-hood temperature cycling. |
| Motor Control Inverter (Traction) | High-Frequency PFC Module |
Use Scenario: Auxiliary 3-phase inverter for HVAC compressor in BEV, operating up to 20 kHz with SiC MOSFETs. IC Role / Device Role / Timing Role: Low-side gate driver for three half-bridge legs; dual-channel configuration used per leg with shared IN/EN control. Use Value: Rail-to-rail output swing and reverse-current tolerance allow direct transformer coupling, reducing component count and layout area. | Use Scenario: Active clamp forward or totem-pole PFC stage in EV charging station front-end, switching at 150–300 kHz. IC Role / Device Role / Timing Role: Driving paralleled MOSFETs per switch node; 1-ns delay match ensures equal current sharing and thermal distribution. Use Value: 4-A sink current rapidly discharges Miller capacitance during turn-off, suppressing shoot-through risk in high-dV/dt PFC waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel low-side gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27524AQDRQ1 | Same pinout, 5-A peak drive, higher VDD max (24 V), no –5-V input rating (only –0.3 V) | Lacks –5-V input robustness; unsuitable for transformer-coupled or high-ground-bounce systems | Select when higher drive current and wider VDD range are prioritized over noise immunity. |
| LM5113QDGSRQ1 | Single-channel, 4-A, integrated bootstrap diode, 5-V UVLO, no EN pin, SOIC-8 only | Requires two units for dual-channel use; lacks independent enable and delay matching | Select for cost-sensitive single-channel applications where enable control and channel matching are not required. |
Compared with UCC27444QDRQ1, UCC27524AQDRQ1 offers higher drive strength but sacrifices –5-V input tolerance critical for transformer interfaces, while LM5113QDGSRQ1 provides simpler integration for single-channel use but increases board area and complexity for dual-channel needs.
Availability
UCC27444QDRQ1 is available at Aetrix Electronics and suitable for automotive on-board chargers, 48-V DC/DC converters, and traction auxiliary inverters requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for UCC27444QDRQ1 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 automotive-grade power management solutions.
The UCC27444QDRQ1 belongs to TI's automotive-qualified gate driver product line, engineered specifically for high-reliability, high-frequency power conversion in electric vehicle subsystems including charging, voltage regulation, and motor control.
FAQ
What is the maximum allowable VDD voltage for UCC27444QDRQ1?
The absolute maximum VDD voltage for UCC27444QDRQ1 is 20 V, with recommended operation from 4.5 V to 18 V. Exceeding 20 V risks permanent damage. This rating enables safe operation across automotive transients (e.g., load dump) when paired with appropriate input clamping or regulation - a key design consideration for UCC27444QDRQ1 in 12-V and 48-V vehicle networks.
Does UCC27444QDRQ1 support transformer-coupled gate drive?
Yes, UCC27444QDRQ1 supports transformer-coupled gate drive due to its –5-V input capability and 4-A reverse-current tolerance on OUTA/OUTB. These features eliminate the need for external rectifying diodes on the secondary side, reducing BOM count and PCB area - a verified implementation method documented in TI's UCC27444QDRQ1 application notes for resonant topologies.
How does the enable function work on UCC27444QDRQ1?
UCC27444QDRQ1 features independent active-high enable pins (ENA and ENB) with TTL-compatible thresholds (1.1–2.7 V) and internal 100-kΩ pullups to VDD. Pulling either ENx low disables its respective output regardless of the INx state; leaving ENx floating enables the channel by default. This allows per-channel fault shutdown in safety-critical automotive systems without affecting the other channel's operation.
What thermal considerations apply to UCC27444QDRQ1 in SOIC-8 vs VSSOP-8 packages?
UCC27444QDRQ1 in SOIC-8 (D) has RθJA = 131.1°C/W, while the VSSOP-8 (DGN) version achieves 57.3°C/W due to its PowerPAD™ thermal pad. For automotive applications with ambient temperatures up to 125°C, the VSSOP-8 is strongly preferred - its lower junction-to-ambient resistance enables higher continuous output current before thermal shutdown, especially when the thermal pad is soldered to a ≥2 cm² GND copper pour.
Is UCC27444QDRQ1 pin-compatible with earlier TI gate drivers?
Yes, UCC27444QDRQ1 is pin-to-pin compatible with UCC27324, UCC27424, and UCC27524 in SOIC-8 and VSSOP-8 packages when ENA/ENB are used as enable inputs. Its internal pullups allow floating ENx pins to default-enable - matching legacy behavior where Pin 1 and Pin 8 were No Connect. This enables drop-in replacement in existing AEC-Q100-compliant designs without PCB revision.
UCC27444QDRQ1 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:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- IGBT, N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 18V
- Logic Voltage - VIL, VIH:
- 1.5V, 1.6V
- Current - Peak Output (Source, Sink):
- 4A, 4A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 11ns, 7ns
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
UCC27444QDRQ1 FAQ
1.How can I place an order for UCC27444QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27444QDRQ1 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 UCC27444QDRQ1 reliable?
The price and inventory of UCC27444QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27444QDRQ1 is usually 5 days.
3.What payment methods are accepted for UCC27444QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC27444QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC27444QDRQ1?
UCC27444QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27444QDRQ1 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 UCC27444QDRQ1?
For technical support, including UCC27444QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27444QDRQ1 requirements.
6.How does Aetrix verify that UCC27444QDRQ1 is sourced from the original manufacturer or authorized distributors?
All UCC27444QDRQ1 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 UCC27444QDRQ1 meets industry standards.
7.What is the process for return or replacement of UCC27444QDRQ1?
All UCC27444QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with UCC27444QDRQ1, 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 UCC27444QDRQ1 part is unused and in its original packaging.
Return procedure for UCC27444QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCC27444QDRQ1 Tags
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ZXGD3009E6TA
Diodes Incorporated
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1EDN7512BXTSA1
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UCC27517DBVR
Texas Instruments
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MCP1416T-E/OT
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IRS2005STRPBF
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IRS2008STRPBF
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IX4310TTR
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2EDN7524RXTMA1
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