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Texas Instruments UCC27284QDRQ1
- Part No.:
- UCC27284QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC27284QDRQ1.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
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Product details
Overview
UCC27284QDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive half-bridge gate driver IC that controls two N-channel MOSFETs in high-side/low-side configuration, delivering ±3-A peak output current, 16-ns typical propagation delay, and 12-ns/10-ns rise/fall times into 1.8-nF load-enabling high-efficiency DC/DC conversion in electric power steering systems.
For engineers reviewing the UCC27284QDRQ1 datasheet, UCC27284QDRQ1 pinout, UCC27284QDRQ1 application, or UCC27284QDRQ1 equivalent, key selection criteria include 100-V HS voltage rating, integrated bootstrap diode, –14-V HS negative voltage tolerance, 5-V UVLO threshold, and SOIC-8 PowerPAD package thermal performance for automotive under-hood environments.
Technical Context
The UCC27284QDRQ1 implements independent TTL/CMOS-compatible HI and LI inputs with internal 250-kΩ pulldown resistors, enabling flexible control logic and input overlap for synchronous rectification topologies. Its robust level shifter delivers <1-ns typical delay matching between HO and LO outputs, minimizing required dead time in high-frequency buck or half-bridge converters.
UVLO protection operates separately on VDD (5.0-V typ. rising threshold) and HB–HS (3.7-V typ. rising threshold), forcing outputs low during undervoltage conditions. The integrated 100-V-rated bootstrap diode supports self-biased high-side drive while eliminating external discrete diodes-reducing BOM count and PCB footprint in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | ±3 A - sufficient to rapidly charge/discharge large gate capacitances and minimize Miller plateau transition losses |
| Propagation Delay | 16 ns typ. - enables stable operation at switching frequencies up to 2 MHz in high-efficiency converters |
| Delay Matching | 1 ns typ. - reduces minimum dead time requirement, improving power stage efficiency and thermal margin |
| HS Voltage Rating | 100 V DC - supports 48-V and 400-V battery architectures with margin for transients in EPS and OBC |
| UVLO Thresholds | VDD: 5.0 V rising / HB–HS: 3.7 V rising - ensures reliable startup and fault recovery across wide temperature range (–40°C to +150°C) |
| Negative Voltage Tolerance | HS: –14 V (100 ns); Inputs: –5 V - withstands body-diode-induced negative transients without latch-up or damage |
| Package Thermal Resistance | RθJB = 16.4 °C/W (DDA) - enables >2 W continuous power dissipation in automotive under-hood ambient conditions |
Pinout & Package
UCC27284QDRQ1 is available in SOIC-8 PowerPAD (DDA) package (6 mm × 5 mm), featuring an exposed thermal pad electrically connected only to VSS for enhanced heat dissipation in high-power automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Low-side power supply input | Supplies low-side driver stage; requires 1-μF decoupling to VSS near pin for stable operation |
| HB | High-side bootstrap supply | Connects to positive terminal of external bootstrap capacitor; integrates 100-V-rated diode for self-biasing |
| HO | High-side gate output | Drives gate of high-side N-MOSFET referenced to HS node; rated for 100-V HS swing and –2-V transient |
| HS | High-side source connection | Connects to source of high-side MOSFET and negative terminal of bootstrap capacitor; tolerates –14-V transients |
| HI | High-side input | TTL/CMOS-compatible control signal; independent of VDD; includes 250-kΩ internal pulldown resistor |
| LI | Low-side input | TTL/CMOS-compatible control signal; independent of VDD; includes 250-kΩ internal pulldown resistor |
| LO | Low-side gate output | Drives gate of low-side N-MOSFET referenced to VSS; rated for –2-V transient (100 ns) |
| VSS | Ground reference | Common return for low-side circuitry and thermal pad; must be connected to large copper area for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for operation from –40°C to +150°C junction temperature-suitable for engine bay and powertrain locations |
| Integrated bootstrap diode | Eliminates external diode, reducing component count, board area, and parasitic inductance in high-current gate loops |
| Independent HI/LI inputs | Enables full control freedom-including simultaneous high, overlapping, or complementary drive-for secondary-side synchronous rectification |
| Robust negative voltage handling | HS pin withstands –14-V transients; inputs tolerate –5-V-improves system resilience against MOSFET body-diode ringing |
| Low RDS(on) output stages | Minimizes conduction loss during Miller plateau transition, directly reducing switching losses in high-duty-cycle applications |
Applications
| Automotive DC/DC Converters | Electric Power Steering (EPS) |
|---|---|
Use Scenario: High-efficiency 12-V to 48-V bidirectional buck-boost converter supplying assist motor in steer-by-wire systems. IC Role / Device Role / Timing Role: Half-bridge gate driver controlling dual N-MOSFETs in synchronous topology with precise timing coordination. Use Value: 1-ns delay matching and 16-ns propagation enable tight dead-time control, improving conversion efficiency by ≥1.2% at 500 kHz. |
Use Scenario: Compact 48-V motor driver module requiring high reliability under vibration, temperature cycling, and EMI stress. IC Role / Device Role / Timing Role: Isolated high-side/low-side gate driver with integrated bootstrap diode and –14-V HS tolerance. Use Value: SOIC-8 PowerPAD package and RθJB = 16.4 °C/W support >2.5-W continuous dissipation without heatsink in confined EPS housing. |
| On-Board Charger (OBC) | Integrated Belt Starter Generator (iBSG) |
Use Scenario: AC/DC + DC/DC stage in 11-kW OBC, where high-frequency switching reduces magnetics size and improves thermal density. IC Role / Device Role / Timing Role: High-speed gate driver for SiC MOSFET half-bridge with fast rise/fall times and low propagation skew. Use Value: 12-ns/10-ns rise/fall into 1.8-nF load minimizes switching energy loss, supporting >97% peak efficiency at 250 kHz. |
Use Scenario: 48-V iBSG in mild hybrid vehicles, requiring rapid torque response and regenerative braking with minimal dead-time distortion. IC Role / Device Role / Timing Role: Dual-input gate driver enabling programmable overlap for zero-voltage switching during regeneration. Use Value: Independent HI/LI control and no built-in dead-time allow firmware-defined timing-critical for adaptive torque shaping and noise suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27282QDRQ1 | Lower 1.8-A peak output current; identical pinout and UVLO thresholds; no integrated bootstrap diode | Suitable for lower-power EPS or HVAC fans where gate charge is ≤30 nC and external diode is acceptable | Select when cost sensitivity outweighs layout simplicity and thermal margin requirements |
| LM5109BQSDX/NOPB | Higher 2-A sink/1-A source asymmetry; 100-V HS rating; no negative voltage tolerance on HS (–3 V max); SOIC-8 package | Used in non-safety-critical 48-V DC/DC converters where AEC-Q100 Grade 1 is not mandated | Choose only if AEC-Q100 compliance is unnecessary and system-level transient protection is added externally |
Compared with UCC27284QDRQ1, UCC27282QDRQ1 trades output drive strength and integrated bootstrap functionality for lower cost, while LM5109BQSDX/NOPB lacks automotive qualification and HS negative voltage robustness-making UCC27284QDRQ1 the only option meeting full AEC-Q100 Grade 1, integrated diode, and –14-V HS tolerance requirements.
Availability
UCC27284QDRQ1 is available at Aetrix Electronics and suitable for automotive DC/DC converters, electric power steering systems, and on-board chargers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for UCC27284QDRQ1 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 automotive-grade power management and interface solutions.
The UCC27284QDRQ1 belongs to TI's automotive gate driver product line, designed specifically for high-reliability, high-efficiency half-bridge and synchronous buck topologies in electrified vehicle subsystems.
FAQ
What is the maximum allowable voltage on the HS pin of the UCC27284QDRQ1?
The UCC27284QDRQ1 specifies an absolute maximum HS voltage of 100 V DC with respect to VSS. It also tolerates –14-V transients on the HS pin for durations up to 100 ns, making it suitable for high-noise automotive environments where body-diode ringing occurs. Exceeding these limits risks permanent device damage per the Absolute Maximum Ratings table.
Does the UCC27284QDRQ1 require an external bootstrap diode?
No, the UCC27284QDRQ1 integrates a 100-V-rated bootstrap diode internally, eliminating the need for an external discrete diode in most applications. This integration reduces component count, PCB area, and gate-loop inductance-directly improving switching performance and system reliability in compact automotive modules.
What is the purpose of the thermal pad on the UCC27284QDRQ1 DDA package?
The exposed thermal pad on the UCC27284QDRQ1 SOIC-8 PowerPAD (DDA) package must be soldered to a large VSS copper plane to achieve RθJB = 16.4 °C/W. This thermal path enables >2 W of continuous power dissipation at +105°C ambient-critical for maintaining junction temperature below 150°C in under-hood automotive applications like EPS and OBC.
How does the UCC27284QDRQ1 handle input signals when VDD is below UVLO threshold?
When VDD falls below the 4.5-V falling UVLO threshold, both HO and LO outputs are forced low regardless of HI/LI input states. This fail-safe behavior prevents shoot-through in the power stage during brownout or startup conditions. Inputs remain functional but have no effect on outputs until VDD exceeds 5.0 V (rising threshold).
Can the UCC27284QDRQ1 drive SiC MOSFETs effectively?
Yes, the UCC27284QDRQ1 is well-suited for driving SiC MOSFETs due to its ±3-A peak output current, 12-ns/10-ns rise/fall times into 1.8-nF load, and 16-ns propagation delay-parameters that minimize switching losses in high-frequency (>200 kHz) SiC-based converters used in OBC and iBSG systems.
UCC27284QDRQ1 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:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 5.5V ~ 16V
- Logic Voltage - VIL, VIH:
- 1.3V, 2.4V
- Current - Peak Output (Source, Sink):
- 2.5A, 3.5A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 120 V
- Rise / Fall Time (Typ):
- 12ns, 10ns
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
UCC27284QDRQ1 FAQ
1.How can I place an order for UCC27284QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27284QDRQ1 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 UCC27284QDRQ1 reliable?
The price and inventory of UCC27284QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27284QDRQ1 is usually 5 days.
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4.How is shipping managed for UCC27284QDRQ1?
UCC27284QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27284QDRQ1 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 UCC27284QDRQ1?
For technical support, including UCC27284QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27284QDRQ1 requirements.
6.How does Aetrix verify that UCC27284QDRQ1 is sourced from the original manufacturer or authorized distributors?
All UCC27284QDRQ1 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 UCC27284QDRQ1 meets industry standards.
7.What is the process for return or replacement of UCC27284QDRQ1?
All UCC27284QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with UCC27284QDRQ1, 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 UCC27284QDRQ1 part is unused and in its original packaging.
Return procedure for UCC27284QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCC27284QDRQ1 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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Microchip Technology
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MCP1402T-E/OT
Microchip Technology
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MCP1415T-E/OT
Microchip Technology
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MCP1401T-E/OT
Microchip Technology
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IX4428NTR
Littelfuse Inc.
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IRS2005STRPBF
Infineon Technologies
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IRS2008STRPBF
Infineon Technologies
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IX4310TTR
Littelfuse Inc.
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2EDN7524RXTMA1
Infineon Technologies
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