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Texas Instruments UCC27525DR
- Part No.:
- UCC27525DR
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UCC27525DR.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,228
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Product details
Overview
UCC27525DR from Texas Instruments is a dual-channel, low-side gate driver IC with independent enable inputs, 5A peak source/sink current per channel, 13ns typical propagation delay, and TTL/CMOS-compatible logic thresholds independent of VDD. It drives MOSFETs and IGBTs in high-frequency power stages such as synchronous rectifiers and GaN-based DC-DC converters.
For engineers reviewing the UCC27525DR datasheet, UCC27525DR pinout, UCC27525DR application, or UCC27525DR equivalent, key selection criteria include channel independence, enable-controlled operation, rail-to-rail output swing, UVLO-protected startup behavior, and thermal performance in SOIC-8 packaging.
Technical Context
The UCC27525DR implements two independent low-side drivers with separate ENA/ENB control pins and distinct input configurations: INA is inverting, INB is non-inverting. Its internal UVLO circuit holds both outputs low until VDD exceeds 4.2V (typ), ensuring glitch-free power-up. Propagation delays are tightly matched (1ns typ) between channels to support synchronous switching.
Input thresholds (VIN_H = 2.1V typ, VIN_L = 1.2V typ) and enable thresholds (VEN_H = 2.1V typ, VEN_L = 1.15V typ) are voltage-independent and feature 0.9V hysteresis for noise immunity. Outputs remain low when inputs float due to internal pullup/pulldown resistors-critical for safety-critical power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak drive current | ±5A per channel - enables fast switching of high-Qg GaN FETs and IGBTs |
| Propagation delay | 13ns typical - supports >50 MHz effective switching frequencies in hard-switched topologies |
| Delay matching | 1ns typical - ensures precise timing alignment for synchronous rectifier or paralleled-output configurations |
| VDD operating range | 4.5V to 18V - accommodates 5V, 12V, and 15V bias rails without level-shifting |
| UVLO threshold | 4.2V rising, 3.9V falling - prevents erratic output during brown-out or soft-start conditions |
| Rise/fall time | 7ns/6ns typical (1.8nF load) - minimizes switching losses in high-frequency SMPS |
| Operating temperature | –40°C to +140°C - qualified for under-hood automotive and industrial motor-control environments |
Pinout & Package
UCC27525DR is packaged in an 8-pin SOIC (D) body measuring 4.90mm × 3.91mm with standard industry footprint and creepage clearance. The exposed pad variant is not used in this orderable part.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ENA | Enable input for Channel A | Active-high; floating or HIGH enables OUTA; LOW forces OUTA low regardless of INA state |
| 2 - INA | Inverting input for Channel A | Drives OUTA inverted; held low when floating via internal VDD pullup |
| 3 - GND | Power and signal reference | Common return path for VDD, inputs, and outputs; must be low-inductance connection |
| 4 - INB | Non-inverting input for Channel B | Drives OUTB non-inverted; held low when floating via internal GND pulldown |
| 5 - OUTB | Channel B output | Low-side driver output capable of ±5A peak; rail-to-rail swing with <75mV VOL at 10mA |
| 6 - VDD | Supply input | Bias rail for all internal circuits; requires local 0.1µF + 1µF bypassing per TI layout guidelines |
| 7 - OUTA | Channel A output | Low-side driver output with identical specs to OUTB; matched delay enables synchronous use |
| 8 - ENB | Enable input for Channel B | Independent control of OUTB; same electrical behavior as ENA |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | ENA/ENB allow per-channel shutdown without affecting other channel's timing or logic state |
| Mixed input polarity | INA (inverting) + INB (non-inverting) simplifies interface to asymmetric PWM controllers or dead-time generators |
| VDD-independent logic thresholds | TTL/CMOS-compatible inputs operate reliably across 3.3V, 5V, and 12V controller interfaces |
| UVLO-protected startup | Outputs remain low until VDD ≥ 4.2V, eliminating shoot-through risk during power ramp |
| Floating-input safety | Internal pullup/pulldown resistors force OUTA/OUTB low if INA or INB floats - meets IEC 62368-1 abnormal condition requirements |
Applications
| Motor Drive Half-Bridge Control | GaN-Based High-Density DC-DC Converter |
|---|---|
Use Scenario: Driving high-side and low-side GaN FETs in a 100 kHz–1 MHz half-bridge for servo motor inverters. IC Role / Device Role / Timing Role: UCC27525DR serves as dual low-side driver for bottom switches, with ENB synchronized to PWM dead-time generator while ENA controls diagnostic disable. Use Value: 1ns delay match ensures precise complementary switching; 5A drive sustains <10ns rise times on 1.2nF GaN gate capacitance. | Use Scenario: Gate driving parallel-connected 650V GaN HEMTs in a 48V–12V bidirectional buck-boost converter. IC Role / Device Role / Timing Role: UCC27525DR operates in parallel-output mode (OUTA + OUTB) to deliver 10A peak current to single high-Ciss switch node. Use Value: Rail-to-rail output swing and <75mV VOL minimize conduction loss; SOIC-8 package supports automated optical inspection in high-volume production. |
| Synchronous Rectification in LLC Resonant Converter | Industrial AC-DC Front-End with Active Clamp |
Use Scenario: Controlling synchronous rectifiers in secondary side of 300W LLC resonant converter operating at 300–500 kHz. IC Role / Device Role / Timing Role: UCC27525DR provides matched-delay dual outputs to drive two SR FETs with zero-voltage switching timing alignment. Use Value: 13ns propagation delay and 1ns inter-channel match reduce timing margin requirements by >2ns versus legacy drivers. | Use Scenario: Driving low-side switches in active clamp forward or flyback topology for telecom rectifiers requiring –40°C to +125°C operation. IC Role / Device Role / Timing Role: UCC27525DR delivers robust gate drive under wide VDD (4.5–18V) and temperature (–40°C to +140°C) ranges with no derating. Use Value: UVLO hysteresis (300mV) prevents oscillation during line dips; SOIC-8 thermal resistance (130.9°C/W) supports 1.2W dissipation at 70°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-side dual gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27524DR | Dual non-inverting inputs; no enable pins; same SOIC-8 package and drive strength | Lacks per-channel enable control; unsuitable where independent shutdown is required | Select UCC27524DR only when both channels must always follow identical input signals without gating |
| LM5112MG/NOPB | Single-channel, 5A driver with adjustable delay; MSOP-8 package; no enable function | Requires two units for dual-channel operation; higher board area and BOM count | Choose LM5112MG/NOPB when fine-tuned propagation delay tuning or space-constrained layouts favor MSOP over SOIC |
Compared with UCC27524DR and LM5112MG/NOPB, the UCC27525DR uniquely combines mixed-polarity inputs and independent enable functionality in a single SOIC-8 package-enabling compact, flexible, and safety-compliant dual-channel gate drive without external logic or duplication.
Availability
UCC27525DR is available at Aetrix Electronics and suitable for switched-mode power supplies, motor control inverters, and GaN-based DC-DC converters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for UCC27525DR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The UCC2752x family was designed specifically for high-efficiency, high-frequency power conversion systems-emphasizing low propagation delay, tight channel matching, and robust operation across extended temperature and supply voltage ranges.
FAQ
What is the input logic configuration of the UCC27525DR?
The UCC27525DR features one inverting input (INA) and one non-inverting input (INB), enabling direct interface to asymmetric PWM controllers or dead-time generators without external inverters. This differs from UCC27523 (dual inverting) and UCC27524 (dual non-inverting). The UCC27525DR's pinout and internal logic are fixed per device variant and cannot be reconfigured.
Does the UCC27525DR support parallel operation of its two outputs?
Yes, the UCC27525DR supports paralleling OUTA and OUTB to achieve up to 10A peak drive current for demanding GaN or SiC switch applications. TI confirms this capability in the datasheet Section 3, noting matched propagation delays (1ns typ) and identical output stage design ensure balanced current sharing when outputs are tied together with minimal trace-length mismatch.
What happens to the outputs of the UCC27525DR when the input pins are left unconnected?
When INA or INB floats, internal pullup (INA) or pulldown (INB) resistors force the respective output low-OUTA goes low if INA floats, and OUTB goes low if INB floats. This fail-safe behavior is explicitly documented in Section 5 and ensures predictable, safe shutdown during open-circuit or disconnected control signals, satisfying IEC 62368-1 abnormal condition testing.
What is the minimum VDD voltage required for reliable operation of the UCC27525DR?
The UCC27525DR has a guaranteed minimum operating VDD of 4.5V per Section 6.3. Below this, UVLO activates and holds outputs low. The rising UVLO threshold is 3.7V (min) to 4.5V (max), with typical 4.2V; hysteresis ensures stable release above 3.9V. Operation below 4.5V is not recommended for functional output-TI specifies 4.5V as absolute minimum for normal logic and drive performance.
How does the UCC27525DR handle enable pin logic levels?
The UCC27525DR's ENA and ENB pins accept TTL/CMOS-compatible voltages independent of VDD: logic high is ≥2.1V (typ), logic low is ≤1.15V (typ), with 0.9V hysteresis. Pins default to enabled when floating due to internal VDD pullups. This allows direct interfacing with 3.3V microcontrollers even when VDD = 12V, and eliminates need for level shifters in mixed-voltage systems.
UCC27525DR 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:
- 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:
- Inverting, 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
UCC27525DR FAQ
1.How can I place an order for UCC27525DR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC27525DR 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 UCC27525DR reliable?
The price and inventory of UCC27525DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC27525DR is usually 5 days.
3.What payment methods are accepted for UCC27525DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC27525DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC27525DR?
UCC27525DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC27525DR 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 UCC27525DR?
For technical support, including UCC27525DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC27525DR requirements.
6.How does Aetrix verify that UCC27525DR is sourced from the original manufacturer or authorized distributors?
All UCC27525DR 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 UCC27525DR meets industry standards.
7.What is the process for return or replacement of UCC27525DR?
All UCC27525DR units undergo pre-shipment inspection (PSI). If there is an issue with UCC27525DR, 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 UCC27525DR part is unused and in its original packaging.
Return procedure for UCC27525DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCC27525DR Tags
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