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Texas Instruments UCC27289D
- Part No.:
- UCC27289D
- Manufacturer:
- Texas Instruments
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC27289D.pdf
- Description:
- IC HALF BRIDGE DRIVER 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:578
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Product details
Overview
UCC27289D 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 - deployed in merchant server PSUs and solar microinverters.
For engineers reviewing the UCC27289D datasheet, UCC27289D pinout, UCC27289D application, or UCC27289D equivalent, this page delivers verified technical context, SOIC-8 package mapping, real-world timing specs (12-ns rise/10-ns fall), negative voltage tolerance (–14 V on HS), and validated alternative options for high-efficiency DC-DC and motor drive designs.
Technical Context
The UCC27289D implements independent TTL/CMOS-compatible HI and LI inputs driving separate HO and LO outputs with no built-in dead-time - enabling precise overlap control in synchronous buck and half-bridge topologies. 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 operates independently on VDD (7.0-V rising threshold) and HB–HS (6.3-V rising threshold), forcing outputs low during undervoltage conditions. The integrated bootstrap diode eliminates external diode requirements in most applications, reducing BOM count and PCB area without compromising 120-V absolute max HB rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | ±3 A - drives large gate charges with minimal Miller plateau transition loss |
| Propagation Delay | 16 ns typical - enables high-frequency switching (>1 MHz) with tight timing control |
| Rise/Fall Time | 12 ns / 10 ns @ 1800-pF load - ensures fast edge rates for reduced conduction loss |
| HS Voltage Rating | 100 V DC, –14 V transient - supports hard-switched topologies with negative HS excursions |
| UVLO Thresholds | VDD: 7.0 V rise / 6.5 V fall; HB–HS: 6.3 V rise / 5.8 V fall - prevents erratic switching during brownout |
| Operating Temp | –40°C to +140°C junction - qualified for industrial and telecom power stages |
| Bootstrap Diode | Integrated 100-V rated - removes need for discrete diode, saving board space and cost |
Pinout & Package
UCC27289D is housed in an 8-pin SOIC package (6 mm × 5 mm) with exposed thermal pad connected to VSS. Pin functions are electrically isolated per channel and support independent input control without internal logic coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 12-V nominal supply for low-side driver and logic; decoupled with 1-μF capacitor to VSS |
| HB | High-side bootstrap supply | Connects to cathode of external bootstrap capacitor; integrates 100-V diode for charge path |
| HO | High-side gate output | Sinks/sources ±3 A to drive high-side N-MOSFET gate; referenced to HS node |
| HS | High-side source connection | Switch node interface; tolerates –14 V transients and operates up to +100 V DC |
| HI | High-side input | TTL/CMOS-compatible; accepts –5 V negative voltage; internally pulled down (250 kΩ) |
| LI | Low-side input | Independent of HI; identical electrical specs; enables asymmetric dead-time programming |
| LO | Low-side gate output | Sinks/sources ±3 A to drive low-side N-MOSFET gate; referenced to VSS |
| VSS | Ground reference | Common return for low-side circuitry and thermal pad; must connect thermal pad to VSS plane |
Key Features
| Feature | Design Value |
|---|---|
| Independent dual-input control | HI and LI pins fully decoupled - allows programmable overlap, zero dead-time, or custom timing sequences |
| Integrated bootstrap diode | On-chip 100-V diode reduces component count and layout complexity vs. discrete solutions |
| Negative voltage tolerance | Inputs withstand –5 V; HS pin handles –14 V transients - improves robustness in noisy or inductive environments |
| Low-disable current | 7-μA quiescent draw when EN is low - extends system standby efficiency in always-on power supplies |
| Matched propagation delay | 1-ns typical delay matching between HO and LO - minimizes required dead-time, boosting converter efficiency |
Applications
| Merchant Server PSU | Solar Microinverter |
|---|---|
|
Use Scenario: High-density 48-V input, 12-V output server power supply using synchronous buck regulation. IC Role / Device Role / Timing Role: Drives high-side/low-side N-MOSFETs in primary-side buck stage; manages gate timing with <16-ns delay and matched edges. Use Value: Enables >95% efficiency at 500-kHz switching via low-loss drive and minimal dead-time overhead. |
Use Scenario: Single-phase grid-tied solar microinverter with DC-AC H-bridge stage. IC Role / Device Role / Timing Role: Controls half-bridge leg in DC-link interface; withstands HS node transients during body-diode commutation. Use Value: –14 V HS tolerance and integrated bootstrap diode simplify gate drive design and improve reliability under partial shading. |
| DC Input BLDC Motor Drive | Test & Measurement Equipment |
|
Use Scenario: 24–48-V brushless DC motor controller for industrial automation with regenerative braking. IC Role / Device Role / Timing Role: Drives three half-bridge legs (six UCC27289D units); leverages independent HI/LI for six-step commutation timing. Use Value: ±3-A peak current and 12-ns rise time ensure crisp MOSFET turn-on during rapid torque transitions. |
Use Scenario: Programmable DC electronic load with active FET-based current sinking and dynamic waveform generation. IC Role / Device Role / Timing Role: Switches high-current N-MOSFETs in parallel configurations; uses EN pin for fast enable/disable during test sequencing. Use Value: 7-μA disable current and 1-ns delay matching support precise pulse-width control and low-power idle states. |
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 |
|---|---|---|---|
| UCC27282D | SOIC-8 package, no EN pin, 100-V HS rating, same 3-A drive and timing specs | Lacks enable functionality; suited for always-on or controller-managed enable schemes | Select when system-level enable is handled externally and board space is constrained |
| LM5113SD | 8-pin WSON, 100-V HS rating, ±2-A peak current, 25-ns propagation delay, no integrated bootstrap diode | Requires external bootstrap diode; higher delay increases minimum dead-time requirement | Choose when thermal performance in compact layouts is prioritized over BOM simplification |
Compared with UCC27289D, UCC27282D removes enable control but retains identical drive strength and timing, while LM5113SD trades integrated bootstrap capability and lower delay for smaller footprint and higher thermal efficiency - making each suitable for distinct trade-offs in PSU density, fault response, and layout complexity.
Availability
UCC27289D is available at Aetrix Electronics and suitable for merchant server PSUs, solar microinverters, and DC-input BLDC motor drives requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for UCC27289D 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 decades of expertise in high-reliability power conversion ICs.
The UCC27289D 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 telecom, server, and renewable energy systems.
FAQ
What is the maximum allowable voltage on the HS pin of the UCC27289D?
The UCC27289D supports a maximum DC voltage of +100 V on the HS pin relative to VSS. It also tolerates –14 V transients (pulse width <100 ns), enabling reliable operation during inductive switching events where the switch node dips below ground before body-diode clamping occurs. This rating is confirmed in Section 6.1 Absolute Maximum Ratings of the official datasheet.
Does the UCC27289D require an external bootstrap diode?
No, the UCC27289D integrates a 100-V rated bootstrap diode internally, eliminating the need for an external diode in most applications. This reduces BOM count and PCB area. However, an external diode may still be added for enhanced reliability in high-stress or high-temperature environments - as noted in the Pin Functions table and Section 7.3.1 of the datasheet.
What is the purpose of the EN pin on the UCC27289D?
The EN pin on the UCC27289D provides hardware-level enable/disable control: pulling EN above 2.0 V enables both HO and LO outputs, while leaving it floating or pulling it below 1.21 V disables the driver and reduces quiescent current to 7 μA. An internal 250-kΩ pull-down resistor ensures safe default-off behavior - critical for fault containment in server PSU and motor drive applications.
How does the UCC27289D handle negative voltage transients on its input pins?
The UCC27289D inputs (HI, LI) tolerate –5 V negative voltage transients, improving noise immunity in electrically harsh environments. This capability is explicitly specified in Section 6.1 Absolute Maximum Ratings and reinforced in Section 7.3.3, where TI notes that internal 250-kΩ pull-down resistors help maintain defined logic states during such events - ensuring robust operation without external clamping in most cases.
What is the typical propagation delay matching between HO and LO outputs of the UCC27289D?
The UCC27289D achieves 1-ns typical delay matching between HO and LO outputs, as specified in Section 1 Features and Table 6-6 Switching Characteristics. This tight matching minimizes required dead-time in half-bridge operation, directly improving power stage efficiency - especially critical in high-frequency server PSUs and microinverters where even nanosecond-level mismatches impact thermal performance.
UCC27289D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Half Bridge
- Applications:
- General Purpose
- Interface:
- Analog, Logic, PWM
- Load Type:
- Inductive, Capacitive, Resistive
- Technology:
- NMOS, PMOS, Power MOSFET
- Rds On (Typ):
- -
- Current - Output / Channel:
- -
- Current - Peak Output:
- 3.5A, 2.5A
- Voltage - Supply:
- 8V ~ 16V
- Voltage - Load:
- 8V ~ 16V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Features:
- Bootstrap Circuit
- Fault Protection:
- Current Limiting, Over Voltage, Short Circuit, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
UCC27289D FAQ
1.How can I place an order for UCC27289D through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27289D 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 UCC27289D reliable?
The price and inventory of UCC27289D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27289D is usually 5 days.
3.What payment methods are accepted for UCC27289D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC27289D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC27289D?
UCC27289D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27289D 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 UCC27289D?
For technical support, including UCC27289D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27289D requirements.
6.How does Aetrix verify that UCC27289D is sourced from the original manufacturer or authorized distributors?
All UCC27289D 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 UCC27289D meets industry standards.
7.What is the process for return or replacement of UCC27289D?
All UCC27289D units undergo pre-shipment inspection (PSI). If there is an issue with UCC27289D, 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 UCC27289D part is unused and in its original packaging.
Return procedure for UCC27289D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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