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Texas Instruments UCC27524AD
- Part No.:
- UCC27524AD
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC27524AD.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,872
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Product details
Overview
UCC27524AD from Texas Instruments is a dual-channel, non-inverting, low-side gate driver IC designed to drive MOSFETs and IGBTs in high-frequency power stages. It delivers 5A peak source/sink current per channel, features 17ns typical propagation delay, 1ns typical inter-channel delay matching, and operates from 4.5V to 18V VDD with –40°C to 150°C junction temperature range - enabling robust GaN and SiC gate drive in DC-DC converters and motor control.
For engineers reviewing the UCC27524AD datasheet, UCC27524AD pinout, UCC27524AD application, or UCC27524AD equivalent, this page provides verified technical context, SOIC-8 and HVSSOP-8 package details, TTL/CMOS-compatible input thresholds independent of VDD, negative input voltage tolerance (–5V), and UVLO-protected glitch-free startup behavior.
Technical Context
The UCC27524AD implements two independent, non-inverting low-side drivers with separate enable inputs (ENA/ENB) and rail-to-rail MOS output stages. Its hybrid pull-up architecture combines P- and N-channel MOSFETs to deliver 5A peak source current during Miller plateau transition, while the pulldown stage uses a single N-channel device with 0.15–1Ω ROL.
Input and enable thresholds are TTL/CMOS compatible (VIN_H ≈ 2.0V, VIN_L ≈ 1.0V, hysteresis ≈ 1V), fixed and supply-independent; inputs tolerate –5V, and EN pins float-high by internal 200kΩ pullups. VDD UVLO (4.1V rise / 3.8V fall) forces both outputs low during undervoltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak drive current | ±5A per channel - sufficient for fast switching of high-Qg GaN FETs and IGBTs without external buffers. |
| Propagation delay | 17ns typical - enables >5 MHz PWM operation with minimal timing uncertainty in synchronous rectifiers. |
| Delay matching | 1ns typical between channels - critical for paralleling outputs or driving dual switches with tight phase alignment. |
| VDD operating range | 4.5V to 18V - supports wide-input industrial and automotive DC-DC designs without auxiliary bias regulation. |
| Input voltage range | –5V to 18V - allows direct connection to noisy gate-drive nodes or level-shifted control signals without clamping diodes. |
| UVLO threshold | 4.1V (rising), 3.8V (falling) - ensures clean, glitch-free output state during brownout and power-up sequencing. |
| Junction temperature | –40°C to 150°C - rated for under-hood automotive, high-density server PSUs, and industrial motor drives. |
Pinout & Package
UCC27524AD is available in SOIC-8 (D) and HVSSOP-8 PowerPAD™ (DGN) packages. Both are surface-mount, thermally enhanced, and pin-compatible. The SOIC-8 body size is 4.90mm × 3.91mm; HVSSOP-8 is 3.00mm × 3.00mm with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENA | Enable input, Channel A | Active-high logic input; floats HIGH by default (200kΩ internal pullup); disables OUTA when pulled LOW. |
| 2 - INA | Non-inverting input, Channel A | Drives OUTA high when ≥2.0V; held LOW by 120kΩ internal pulldown if floating - prevents unintended turn-on. |
| 3 - GND | Power and signal reference | Common return for VDD, inputs, enables, and outputs; must be low-inductance connection for EMI control. |
| 4 - INB | Non-inverting input, Channel B | Functionally identical to INA; enables independent or complementary control of second power switch. |
| 5 - OUTB | Output, Channel B | Low-side gate drive output; rail-to-rail swing (0V to VDD); capable of 5A sink/source into capacitive loads. |
| 6 - VDD | Bias supply input | Single 4.5–18V supply powers both channels; includes UVLO protection and 1µF local decoupling requirement. |
| 7 - OUTA | Output, Channel A | Matches OUTB electrically and thermally; may be paralleled with OUTB for 10A total drive capability. |
| 8 - ENB | Enable input, Channel B | Independent enable mirroring ENA; allows asymmetric channel control for light-load efficiency optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Negative input voltage tolerance | –5V on INA/INB/ENA/ENB - eliminates need for external clamping in high-dV/dt environments like half-bridge node sensing. |
| VDD-independent logic thresholds | TTL/CMOS-compatible thresholds (2.0V/1.0V) stable across 4.5–18V VDD - simplifies interface with 3.3V or 5V controllers without level shifters. |
| Inter-channel delay matching | 1ns typical - enables precise synchronization for synchronous rectification, dual-phase interleaving, or paralleled outputs. |
| UVLO-locked low-state outputs | Both OUTA and OUTB forced LOW during VDD undervoltage - prevents partial turn-on and shoot-through at power-up/down. |
| Floating-input safety | Internal 120kΩ pulldowns on INA/INB hold outputs LOW when unconnected - meets IEC 62368-1 abnormal condition requirements. |
Applications
| Switch-Mode Power Supplies | DC-DC Converters |
|---|---|
|
Use Scenario: High-efficiency, high-frequency isolated flyback or forward converters with synchronous rectification. IC Role / Device Role / Timing Role: Dual low-side driver for SR FETs; matched delays ensure zero-voltage switching (ZVS) timing integrity across primary-secondary transitions. Use Value: Enables >95% efficiency at 500kHz+ switching with GaN FETs by minimizing dead-time uncertainty and reducing conduction losses. |
Use Scenario: Multiphase buck regulators in AI accelerators and telecom rectifiers requiring tight current sharing. IC Role / Device Role / Timing Role: Independent channel control for phase interleaving; ENA/ENB allow dynamic phase shedding under light load. Use Value: Reduces output ripple by 40% and improves transient response via precise 1ns-matched edge alignment across phases. |
| Solar Power Inverters | Motor Control Systems |
|
Use Scenario: MPPT DC-DC stage and H-bridge inverter stage in string inverters with SiC MOSFETs. IC Role / Device Role / Timing Role: Low-side gate driver for half-bridge legs; –5V input tolerance withstands common-mode noise from PV array grounding transients. Use Value: Eliminates external TVS/clamp networks on gate-control lines, reducing BOM count and layout area by 30%. |
Use Scenario: Field-oriented control (FOC) in BLDC/PMSM drives using discrete IGBT modules. IC Role / Device Role / Timing Role: Dual-channel driver for low-side IGBT gates in three-phase inverter; SOIC-8 thermal design supports 150°C ambient operation. Use Value: Sustains 100% torque at stall without derating, thanks to 150°C TJ rating and 5A peak current into high-Ciss IGBTs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-side gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27524ADR | Same electrical specs and pinout; DGN (HVSSOP-8) package with PowerPAD™ thermal pad - 48.9°C/W RθJA vs 126.4°C/W for SOIC-8. | Better thermal performance required in space-constrained, high-power-density designs (e.g., 1U server PSUs). | Select UCC27524ADR when board-level thermal resistance must stay below 30°C/W or junction temp exceeds 130°C. |
| LM5113SD | Single-channel, 5A sink/source, but only 2.5A source; no negative input voltage rating; 25ns propagation delay; SOIC-8 only. | Limited to lower-frequency (<300kHz), lower-power applications where cost is prioritized over noise immunity and speed. | Choose LM5113SD only for cost-sensitive, non-GaN, <300kHz designs where –5V input tolerance and 17ns delay are not required. |
Compared with UCC27524AD, UCC27524ADR offers superior thermal management in compact layouts, while LM5113SD trades speed, noise immunity, and dual-channel flexibility for lower unit cost - making UCC27524AD the optimal choice for high-frequency, high-reliability GaN/SiC systems.
Availability
UCC27524AD is available at Aetrix Electronics and suitable for switch-mode power supplies, DC-DC converters, and motor control systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for UCC27524AD 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 focused on analog and embedded processing technologies, with decades of expertise in power management ICs and high-reliability industrial components.
The UCC27524AD belongs to TI's UCC2752x family of high-speed gate drivers, engineered specifically for high-efficiency, high-frequency power conversion using wide-bandgap devices - emphasizing robustness, timing precision, and system-level noise immunity.
FAQ
What is the maximum negative voltage the UCC27524AD inputs can tolerate?
The UCC27524AD inputs (INA, INB, ENA, ENB) are rated for –5V DC per absolute maximum ratings. This allows direct connection to nodes experiencing negative ringing or ground bounce without external protection, enhancing reliability in high-dV/dt GaN-based topologies. The UCC27524AD maintains functional integrity up to this limit without latch-up or parametric shift.
Does the UCC27524AD support paralleling its two outputs for higher current drive?
Yes, the UCC27524AD supports paralleling OUTA and OUTB to achieve up to 10A peak drive current. Its 1ns typical inter-channel delay matching and matched output impedance minimize current imbalance. To implement, connect INA = INB and ENA = ENB, and route outputs with symmetrical PCB traces - verified in TI's SLUSBP4C datasheet Section 3 and Figure 7-2.
What happens to the outputs of the UCC27524AD during VDD undervoltage lockout?
During VDD UVLO (below 3.8V falling threshold), both OUTA and OUTB are actively held LOW by internal circuitry - ensuring glitch-free, predictable behavior at power-up and brownout. This prevents partial turn-on of power switches and eliminates shoot-through risk in half-bridge or synchronous rectifier configurations using the UCC27524AD.
Is the UCC27524AD pin-compatible with earlier TI gate drivers like the UCC27324?
Yes, the UCC27524AD is pin-compatible with the UCC27324 in SOIC-8 (D) package: ENA and ENB map to the same pins as NC pins on UCC27324, and internal 200kΩ pullups allow floating ENx pins for drop-in replacement. However, UCC27524AD adds –5V input tolerance and tighter delay matching - confirmed in TI's SLUSBP4C datasheet Section 6.3.3.
What is the recommended minimum input pulse width for reliable switching of the UCC27524AD?
The UCC27524AD requires a minimum input pulse width of 15ns (typical, SOIC-8) to guarantee full output transition, per Section 5.6 of the SLUSBP4C datasheet. For designs operating near 50 MHz PWM frequencies or with very fast controller edges, verify timing margins using the 10–90% propagation delay (17ns) and pulse-width specifications under actual load and temperature conditions.
UCC27524AD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- 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:
- 1V, 2.3V
- Current - Peak Output (Source, Sink):
- 5A, 5A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 7ns, 6ns
- Operating Temperature:
- -40°C ~ 140°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
UCC27524AD FAQ
1.How can I place an order for UCC27524AD through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27524AD 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 UCC27524AD reliable?
The price and inventory of UCC27524AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27524AD is usually 5 days.
3.What payment methods are accepted for UCC27524AD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC27524AD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC27524AD?
UCC27524AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27524AD 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 UCC27524AD?
For technical support, including UCC27524AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27524AD requirements.
6.How does Aetrix verify that UCC27524AD is sourced from the original manufacturer or authorized distributors?
All UCC27524AD 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 UCC27524AD meets industry standards.
7.What is the process for return or replacement of UCC27524AD?
All UCC27524AD units undergo pre-shipment inspection (PSI). If there is an issue with UCC27524AD, 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 UCC27524AD part is unused and in its original packaging.
Return procedure for UCC27524AD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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