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Texas Instruments UCC27289DR
- Part No.:
- UCC27289DR
- Manufacturer:
- Texas Instruments
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC27289DR.pdf
- Description:
- IC HALF BRIDGE DRIVER 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,310
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Product details
Overview
UCC27289DR from Texas Instruments is a 3-A, 120-V half-bridge gate driver IC for N-channel MOSFETs in high-side/low-side configuration, featuring 16-ns propagation delay, ±3-A peak output current, 8-V UVLO, and integrated 100-V bootstrap diode. It operates across –40°C to 140°C and drives power stages in solar microinverters and server PSUs.
For engineers reviewing the UCC27289DR datasheet, UCC27289DR pinout, UCC27289DR application, or UCC27289DR equivalent, this page delivers verified electrical specs, thermal performance data, SOIC-8 package mapping, enable/disable functionality, and real-world timing behavior under 1800-pF load and 12-V supply.
Technical Context
The UCC27289DR implements independent TTL/CMOS-compatible HI and LI inputs with no internal dead-time generation, enabling precise overlap control of HO and LO outputs. Its robust level shifter supports HS node operation up to 100 V referenced to VSS while maintaining 1-ns typical delay matching between channels.
UVLO protection is applied separately to VDD (7.0-V rising threshold) and HB–HS (6.3-V rising threshold), ensuring safe startup and fault response. The integrated bootstrap diode eliminates external diode requirements in most designs, reducing BOM count and PCB area.
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 typical - enables high-frequency switching (>1 MHz) with tight timing control in synchronous buck topologies. |
| Rise/Fall Time | 12 ns / 10 ns @ 1800 pF - ensures fast edge transitions critical for efficiency in hard-switched half-bridges. |
| UVLO Thresholds | VDD: 7.0 V rise / 6.5 V fall; HB–HS: 6.3 V rise / 5.8 V fall - prevents erratic output behavior during brown-out or bootstrap capacitor discharge. |
| HS Voltage Rating | –10 V DC / –14 V pulse - tolerates negative transients common during low-side body-diode conduction in BLDC and PSU applications. |
| Operating Temperature | –40°C to 140°C junction - supports deployment in thermally demanding environments like telecom rectifiers and motor drives. |
| Enable Current | 7 μA when disabled - reduces system standby power in fault-recovery or sleep-mode sequences. |
Pinout & Package
UCC27289DR is housed in an 8-pin SOIC package (6 mm × 5 mm) with exposed thermal pad connected to VSS. Pin 1 is VDD; pin 4 is HO; pin 5 is HS; pin 8 is LO. EN pin is not present - enable/disable functionality is unavailable in D-package variants.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Low-side power supply input | Supplies logic and low-side driver stage; requires 1-μF decoupling to VSS near pin. |
| HB (Pin 2) | High-side bootstrap supply node | Connects to cathode of external bootstrap diode and positive terminal of bootstrap capacitor. |
| HO (Pin 3) | High-side gate drive output | Drives gate of high-side N-MOSFET; referenced to HS, not VSS. |
| HS (Pin 4) | High-side source reference | Connects to source of high-side MOSFET and negative terminal of bootstrap capacitor. |
| HI (Pin 5) | High-side input signal | TTL/CMOS-compatible; independent of VDD; withstands –5 V transient. |
| LI (Pin 6) | Low-side input signal | Independent of HI and VDD; internal 250-kΩ pulldown ensures LO = low when floating. |
| LO (Pin 7) | Low-side gate drive output | Drives gate of low-side N-MOSFET; referenced to VSS. |
| VSS (Pin 8) | Ground reference | Common return for low-side circuitry and thermal pad connection point. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Bootstrap Diode | 100-V rated on-chip diode eliminates need for external discrete diode, saving board space and cost in compact PSU designs. |
| Independent Dual Inputs | HI and LI accept overlapping signals without internal logic blocking, enabling custom dead-time control via MCU or analog controller. |
| Negative Voltage Tolerance | Inputs tolerate –5 V; HS pin handles –14 V pulses - improves robustness against ground bounce and parasitic ringing. |
| Low Propagation Delay Matching | 1-ns typical delay mismatch between HO and LO paths minimizes required dead time, increasing system efficiency in high-frequency converters. |
| Thermal Performance | RθJA = 118.3°C/W (SOIC-8) - optimized for convection-cooled industrial applications with standard PCB copper pour. |
Applications
| Solar Microinverters | Server Power Supplies |
|---|---|
|
Use Scenario: Driving half-bridge in isolated DC-AC conversion stage with 100-V bus and high switching frequency. IC Role / Device Role / Timing Role: High-side/low-side gate driver controlling two N-MOSFETs; manages bootstrap voltage generation and provides UVLO-protected output enable. Use Value: Integrated bootstrap diode and –14-V HS tolerance eliminate external components and improve reliability under fast transient conditions. |
Use Scenario: Synchronous buck converter in 12-V intermediate bus architecture with tight thermal constraints. IC Role / Device Role / Timing Role: Gate driver for primary-side high-efficiency power stage; delivers ±3-A peak current to reduce MOSFET switching losses. Use Value: 16-ns propagation delay and 1-ns delay matching allow <100-ns dead time, boosting full-load efficiency by >0.5%. |
| BLDC Motor Drives | Telecom Rectifiers |
|
Use Scenario: 3-phase inverter driving 48-V DC input BLDC motors in industrial fans and pumps. IC Role / Device Role / Timing Role: Half-bridge driver per phase; HI/LI inputs synchronized to PWM controller for six-step commutation. Use Value: Independent inputs support advanced commutation schemes; –10-V HS DC rating accommodates body-diode clamping during regeneration. |
Use Scenario: High-density AC-DC front-end with active clamp forward or LLC topology operating at 100+ kHz. IC Role / Device Role / Timing Role: High-voltage gate driver for primary-side switches; withstands 100-V HS node with minimal layout sensitivity. Use Value: 140°C max junction temperature and SOIC-8 thermal pad support continuous operation in sealed telecom chassis with limited airflow. |
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 |
|---|---|---|---|
| UCC27282DR | Same SOIC-8 package but lacks integrated bootstrap diode; 2-A peak current; no EN pin. | Requires external bootstrap diode; lower drive strength limits use with larger gate charges. | Select when cost-sensitive designs can accommodate external diode and reduced current capability. |
| LM5109BSDX/NOPB | SOIC-8, 1-A peak current, 100-V HS rating, no integrated bootstrap diode, 50-ns propagation delay. | Higher propagation delay increases minimum dead time; unsuitable for >500-kHz operation. | Choose only for legacy designs where timing margin allows longer delays and external diode is acceptable. |
Compared with UCC27282DR and LM5109BSDX/NOPB, the UCC27289DR delivers superior timing precision (16 ns vs ≥50 ns), higher drive strength (±3 A vs ≤2 A), and integrated bootstrap functionality - making it optimal for high-efficiency, high-frequency half-bridge systems where layout simplicity and thermal headroom are critical.
Availability
UCC27289DR is available at Aetrix Electronics and suitable for solar microinverters, server power supplies, and telecom rectifiers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for UCC27289DR 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 power management technologies with over 90 years of innovation in industrial and power electronics.
The UCC27289DR belongs to TI's high-voltage gate driver product line, engineered specifically for efficient, robust control of N-channel MOSFETs in half-bridge and synchronous buck topologies used in energy-conversion systems.
FAQ
What is the maximum allowable voltage on the HS pin of the UCC27289DR?
The UCC27289DR supports –10 V DC and –14 V pulses (<100 ns) on the HS pin. This rating enables reliable operation during low-side body-diode conduction events in BLDC and PSU applications where ground bounce occurs. Exceeding –14 V risks latch-up or permanent damage, so layout must minimize HS node inductance and include low-ESR HB-to-HS bypass capacitors.
Does the UCC27289DR have an enable pin?
No, the UCC27289DR (SOIC-8 D package) does not include an EN pin. Enable/disable functionality is only available in the DRC (10-pin SON) variant. In the UCC27289DR, outputs respond directly to HI and LI inputs; floating inputs default to low due to internal 250-kΩ pulldowns, providing inherent disable behavior without dedicated control.
What is the purpose of the integrated bootstrap diode in the UCC27289DR?
The integrated 100-V bootstrap diode in the UCC27289DR charges the external bootstrap capacitor from VDD during low-side conduction, eliminating the need for an external discrete diode. This reduces BOM count, PCB footprint, and potential failure points - particularly valuable in space-constrained server PSU and microinverter designs where reliability and density are paramount.
Can the UCC27289DR drive both high-side and low-side MOSFETs simultaneously?
Yes, the UCC27289DR independently controls HO and LO via separate HI and LI inputs, allowing simultaneous or overlapped drive signals. Unlike fixed-dead-time drivers, it imposes no internal logic blocking - enabling precise timing control via external MCU or PWM controller. However, shoot-through must be prevented by external dead-time insertion in the control signal path.
What thermal considerations apply to the UCC27289DR in SOIC-8 package?
The UCC27289DR in SOIC-8 has RθJA = 118.3°C/W. To maintain ≤140°C junction temperature at full load, PCB design must include a minimum 1-in² copper pour connected to the exposed thermal pad (VSS), plus 1-μF VDD-to-VSS and 0.1-μF HB-to-HS ceramic capacitors placed within 3 mm of respective pins. Thermal vias under the pad are strongly recommended for sustained 3-A peak current operation.
UCC27289DR 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
- Output Configuration:
- Half Bridge
- Applications:
- General Purpose
- Interface:
- Analog, Logic, PWM
- Load Type:
- Capacitive and Resistive
- Technology:
- Bipolar, NMOS, Power MOSFET
- Rds On (Typ):
- -
- Current - Output / Channel:
- -
- Current - Peak Output:
- 2.5A
- Voltage - Supply:
- 8V ~ 16V
- Voltage - Load:
- 8V ~ 16V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Fault Protection:
- Current Limiting, Over Voltage, Short Circuit, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
UCC27289DR FAQ
1.How can I place an order for UCC27289DR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27289DR 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 UCC27289DR reliable?
The price and inventory of UCC27289DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27289DR is usually 5 days.
3.What payment methods are accepted for UCC27289DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC27289DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC27289DR?
UCC27289DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27289DR 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 UCC27289DR?
For technical support, including UCC27289DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27289DR requirements.
6.How does Aetrix verify that UCC27289DR is sourced from the original manufacturer or authorized distributors?
All UCC27289DR 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 UCC27289DR meets industry standards.
7.What is the process for return or replacement of UCC27289DR?
All UCC27289DR units undergo pre-shipment inspection (PSI). If there is an issue with UCC27289DR, 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 UCC27289DR part is unused and in its original packaging.
Return procedure for UCC27289DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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