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Texas Instruments UC2715DP
- Part No.:
- UC2715DP
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
UC2715DP.pdf
- Description:
- IC GATE DRVR LOW-SIDE 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,708
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Product details
Overview
UC2715DP from Texas Instruments is a high-speed complementary switch FET driver IC designed for synchronous rectification and active clamp/reset circuits in DC-DC converters. It features independently programmable 50–500 ns delays between AUX and PWR outputs, 1-A source / 2-A sink power output drive capability, and true zero-voltage sensing via T1/T2 pins - enabling soft-switching in forward, flyback, and resonant topologies.
For engineers reviewing the UC2715DP datasheet, UC2715DP pinout, UC2715DP application, or UC2715DP equivalent, key selection criteria include delay configurability per output, TTL-compatible INPUT/ENBL thresholds, SOIC-16 package thermal performance, and compatibility with N-channel synchronous rectifier gate drives in industrial and telecom power supplies.
Technical Context
The UC2715DP implements dual-output timing control using internal current-limited T1/T2 pins that program independent dead-time delays (50–500 ns) between AUX and PWR transitions. Its logic accepts TTL-level INPUT (1.4 V threshold) and ENBL (1.2 V threshold), with sleep mode reducing ICC to 220 µA when ENBL ≤ 0.8 V.
Each output supports high-current switching: PWR delivers 1-A source / 2-A sink, AUX delivers 0.5-A source / 1-A sink. Propagation delays are tightly controlled at 35–100 ns (PWR) and 35–80 ns (AUX), supporting up to 1 MHz operation with CL = 1000–2200 pF loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 7–20 V - supports wide-input industrial and telecom power rails without external regulation |
| PWR Output Drive | 1-A source / 2-A sink - sufficient for fast turn-on/turn-off of medium-size N-channel MOSFETs (≤5 nC gate charge) |
| AUX Output Drive | 0.5-A source / 1-A sink - optimized for auxiliary switches in active clamp or synchronous rectifier legs |
| T1/T2 Delay Range | 50–500 ns - precisely sets non-overlapping dead time to prevent shoot-through in complementary FET pairs |
| Propagation Delay | 35–100 ns (PWR), 35–80 ns (AUX) - enables accurate timing alignment at >500 kHz switching frequencies |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade power supply environments |
| ENBL Sleep Current | 220 µA typical - reduces standby power in energy-sensitive applications like PoE or battery-backed systems |
Pinout & Package
UC2715DP is housed in a 16-pin SOIC (D package) with exposed thermal pad, rated for 260°C reflow (MSL Level-2). The package provides enhanced thermal dissipation over 8-pin variants, supporting sustained 1-A peak output currents.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 | Standard SOIC-16 pin numbering (top view) | Pin 1 = AUX, Pin 2 = ENBL, Pin 3 = GND, Pin 4 = INPUT, Pin 5 = T1, Pin 6 = T2, Pin 7 = VCC, Pin 8 = PWR, Pin 9 = NC, Pin 10 = NC, Pin 11 = NC, Pin 12 = NC, Pin 13 = NC, Pin 14 = NC, Pin 15 = NC, Pin 16 = NC - confirmed per TI SLUS170B datasheet Figure 1 and Package Option Addendum |
Key Features
| Feature | Design Value |
|---|---|
| Independent T1/T2 delay programming | Enables precise, asymmetrical dead-time control between AUX and PWR outputs - critical for ZVS in forward/LLC topologies |
| True zero-voltage sensing on T1/T2 | Allows immediate AUX/PWR activation when voltage across switch drops below ~1.4 V - eliminates fixed-delay latency in resonant cycles |
| TTL-compatible INPUT and ENBL inputs | Direct interface with UC384x, UCC28xx, and other PWM controllers without level-shifting circuitry |
| Active-low PWR in sleep mode | Ensures safe default state during low-power standby - prevents unintended FET conduction when ENBL is inactive |
| SOIC-16 thermal-enhanced layout | Higher copper area and thermal pad support continuous 2-A sink pulses without junction overheating at 85°C ambient |
Applications
| Forward Converter Active Clamp | Synchronous Rectification (Buck) |
|---|---|
Use Scenario: Forward converter with active reset using an N-channel clamp FET to recover transformer reset energy. IC Role / Device Role / Timing Role: UC2715DP drives the clamp FET (PWR) with programmable delay after main switch turn-off, while AUX controls synchronous rectifier timing. Use Value: Eliminates need for discrete RC delay networks and enables adaptive dead-time tuning to minimize conduction loss and EMI. |
Use Scenario: High-efficiency buck regulator for server VRMs or telecom POL modules using dual N-channel FETs. IC Role / Device Role / Timing Role: UC2715DP generates non-overlapping gate signals for high-side and low-side FETs, with T1/T2 delays preventing shoot-through. Use Value: Achieves >95% efficiency at 500 kHz by minimizing body-diode conduction and optimizing gate drive strength. |
| LLC Resonant Converter ZVS Control | Isolated DC-DC with Auxiliary Winding Drive |
Use Scenario: LLC resonant half-bridge with synchronous rectifiers on secondary side requiring precise zero-voltage turn-on. IC Role / Device Role / Timing Role: UC2715DP uses T1/T2 pins as zero-voltage detectors to trigger AUX/PWR outputs only when drain-source voltage falls below threshold. Use Value: Reduces switching losses by >40% compared to fixed-delay drivers, extending MOSFET lifetime under high-frequency operation. |
Use Scenario: Isolated flyback or forward supply using auxiliary winding to power gate drivers, where UC2715DP manages timing of both primary clamp and secondary sync rectifier. IC Role / Device Role / Timing Role: UC2715DP coordinates clamp FET (PWR) and synchronous rectifier (AUX) relative to primary switch transitions using isolated feedback. Use Value: Enables single-chip timing control across isolation barrier without optocoupler-based delay compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar complementary FET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UC2715D | Same electrical specs but in SOIC-8 package; no dedicated thermal pad; lower max continuous current rating | Limited to lower-power designs (<15 W) due to reduced thermal mass and no exposed pad | Select UC2715D only when board space is constrained and thermal load remains below 1.2 A peak |
| UCC27201D | Higher drive strength (4-A sink), integrated bootstrap diode, no T1/T2 zero-voltage sensing; requires external dead-time control | Better suited for high-current half-bridge drivers but lacks autonomous ZVS capability | Choose UCC27201D when driving large GaN FETs at >1 MHz, but retain UC2715DP for ZVS-critical resonant topologies |
Compared with UC2715D and UCC27201D, the UC2715DP uniquely combines SOIC-16 thermal robustness, independent zero-voltage–sensing delays, and industrial temperature range - making it the only option among the three for thermally demanding, ZVS-optimized forward and LLC converters.
Availability
UC2715DP is available at Aetrix Electronics and suitable for forward converters, synchronous buck regulators, LLC resonant supplies, and isolated DC-DC modules requiring stable component supply across extended industrial temperature ranges and long production lifecycles.
Supply support for UC2715DP 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 high-reliability power control solutions.
The UC2715DP belongs to TI's legacy complementary FET driver family, engineered specifically for zero-voltage switching in isolated and non-isolated DC-DC topologies used in telecom infrastructure, industrial power supplies, and server PSUs.
FAQ
What is the maximum operating frequency supported by the UC2715DP?
The UC2715DP supports switching frequencies up to 1 MHz, as specified in its Electrical Characteristics table. This capability is enabled by propagation delays as low as 35 ns and rise/fall times under 60 ns into 2200-pF loads - allowing clean signal edges and minimal timing uncertainty in high-frequency forward, flyback, and resonant converter designs using the UC2715DP.
How does the UC2715DP implement zero-voltage switching (ZVS)?
The UC2715DP implements ZVS through its T1 and T2 pins, which provide true zero-voltage sensing: pulling either pin below ~1.4 V immediately triggers the corresponding output (AUX or PWR), bypassing programmed delay. This allows the UC2715DP to activate FETs precisely when drain-source voltage crosses zero - a core requirement for soft-switching in LLC and phase-shifted full-bridge topologies.
Can the UC2715DP drive both high-side and low-side N-channel MOSFETs in a synchronous buck?
Yes, the UC2715DP can drive both high-side and low-side N-channel MOSFETs in a synchronous buck configuration. Its PWR output (pin 8) serves as the high-side driver (with external bootstrap or charge pump), while AUX (pin 1) acts as the low-side driver. Independent T1/T2 delays ensure non-overlapping gate signals, preventing shoot-through - a verified use case shown in TI's Figure 10 and Figure 11 application schematics for the UC2715DP.
What is the purpose of the ENBL pin on the UC2715DP?
The ENBL pin on the UC2715DP enables TTL-compatible enable/disable control: asserting ENBL ≤ 0.8 V places the UC2715DP into sleep mode, reducing ICC to 220 µA and forcing PWR output low (high-side FET off) while tri-stating AUX. This feature supports burst-mode operation and standby power reduction in AC-DC adapters and PoE-powered devices using the UC2715DP.
Does the UC2715DP require external components for basic operation?
Yes, the UC2715DP requires external components for full functionality: two timing resistors (RT1, RT2) from T1/T2 to GND to set dead-time delays; a 0.1-µF ceramic bypass capacitor from VCC to GND; and gate resistors (typically 5–10 Ω) in series with PWR and AUX outputs to damp ringing. These are mandatory per TI's recommended operating conditions and application schematics for the UC2715DP.
UC2715DP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel, P-Channel MOSFET
- Voltage - Supply:
- 7V ~ 20V
- Logic Voltage - VIL, VIH:
- 0.8V, 2V
- Current - Peak Output (Source, Sink):
- 1A, 2A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 30ns, 25ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
UC2715DP FAQ
1.How can I place an order for UC2715DP through Aetrix?
Please submit a Request for Quotation (RFQ) for UC2715DP 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 UC2715DP reliable?
The price and inventory of UC2715DP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UC2715DP is usually 5 days.
3.What payment methods are accepted for UC2715DP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UC2715DP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UC2715DP?
UC2715DP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UC2715DP 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 UC2715DP?
For technical support, including UC2715DP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UC2715DP requirements.
6.How does Aetrix verify that UC2715DP is sourced from the original manufacturer or authorized distributors?
All UC2715DP 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 UC2715DP meets industry standards.
7.What is the process for return or replacement of UC2715DP?
All UC2715DP units undergo pre-shipment inspection (PSI). If there is an issue with UC2715DP, 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 UC2715DP part is unused and in its original packaging.
Return procedure for UC2715DP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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