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Texas Instruments TPS51601ADRBR
- Part No.:
- TPS51601ADRBR
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS51601ADRBR.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:3,584
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Product details
Overview
TPS51601ADRBR from Texas Instruments is a dual high-efficiency synchronous MOSFET driver with integrated bootstrap switch, designed for high-frequency buck converters. It drives N-channel high-side and low-side FETs with 1.0-Ω high-side source resistance and 0.4-Ω low-side sink resistance, supporting input voltages up to 30 V and operating from –40°C to 105°C in mobile core regulator applications.
For engineers reviewing the TPS51601ADRBR datasheet, TPS51601ADRBR pinout, TPS51601ADRBR application, or TPS51601ADRBR equivalent, key selection considerations include adaptive dead-time control, SKIP-mode light-load efficiency optimization, zero-crossing detection accuracy, and thermal performance in 3 mm × 3 mm SON (DRB) packaging.
Technical Context
The TPS51601ADRBR implements adaptive dead-time control to prevent shoot-through by monitoring DRVH-SW and DRVL-GND voltages before enabling complementary drive transitions. Its integrated BST switch replaces the external bootstrap diode, reducing conduction loss and enabling tighter regulation of the high-side gate drive voltage.
Zero-crossing detection is adaptive: it samples SW node voltage after DRVL turns OFF, updates comparator offset based on prior events, and optimizes timing for discontinuous conduction mode (DCM). The SKIP input directly enables forced continuous conduction mode (FCCM) when asserted high, disabling zero-crossing detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 4.5 V to 5.5 V - powers internal logic and low-side driver; UVLO thresholds at 3.5 V (fall) and 3.7 V (rise) ensure reliable startup/shutdown. |
| High-side RDRVH | 1.0 Ω typical - limits peak gate current and reduces switching loss during high-side FET turn-on. |
| Low-side RDRVL | 0.4 Ω typical - enables fast discharge of low-side FET gate, minimizing conduction time and body-diode conduction. |
| Non-overlap Time | 5 ns to 20 ns - prevents simultaneous conduction of high- and low-side FETs under varying load/temperature conditions. |
| SW Voltage Rating | –1 V to 30 V - supports high-input-voltage DC-DC converters including 12 V, 19 V, and 24 V bus systems. |
| Operating Temp | –40°C to 105°C - qualified for industrial and mobile computing environments with full parameter specification across range. |
| θJA | 42.6°C/W - enables thermal design for >3 A continuous output current on standard 2-layer PCB with exposed thermal pad soldered to GND plane. |
Pinout & Package
The TPS51601ADRBR is housed in an 8-pin 3 mm × 3 mm SON (DRB) package with exposed thermal pad (PwrPAD), rated for JEDEC Level-2 moisture sensitivity and RoHS-compliant NiPdAu finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply input | Provides gate drive voltage for high-side N-FET; internally switched via DRVL signal to replace external bootstrap diode. |
| DRVH | High-side gate drive output | Drives gate of high-side N-FET with 1.0-Ω source resistance; transitions controlled by PWM and adaptive dead-time logic. |
| DRVL | Low-side gate drive output | Drives gate of low-side N-FET with 0.4-Ω sink resistance; enables zero-crossing detection via SW node sensing. |
| GND | Power and signal ground | Common return for low-side driver, internal logic, and thermal pad connection; must be low-impedance for EMI and stability. |
| PWM | 3-state logic input | Defines high-side on-time; floating state disables both drivers for power-down or pre-biased start-up sequencing. |
| SKIP | Mode select input | Active-low signal enabling DCM (SKIP = LOW) or forcing FCCM (SKIP = HIGH); determines zero-crossing activation. |
| SW | Switch-node I/O | Return path for high-side driver and sensing node for adaptive zero-crossing detection; connects to drain of high-side FET. |
| VDD | Logic supply input | 5-V bias rail for internal circuitry; includes undervoltage lockout (UVLO) with 3.7 V turn-on and 3.5 V turn-off thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap switch | Replaces external diode with low-Ron (4–20 Ω) FET, reducing voltage drop and improving high-side gate drive stability across load transients. |
| Adaptive dead-time control | Dynamically adjusts non-overlap between DRVH and DRVL based on real-time SW and GND node voltages, eliminating fixed-timing margin overhead. |
| Adaptive zero-crossing detection | Self-calibrates comparator offset over successive inductor current zero crossings to minimize body-diode conduction loss in DCM. |
| SKIP pin for mode selection | Direct hardware control of DCM/FCCM operation without requiring controller firmware changes or additional logic signals. |
| 3 mm × 3 mm SON package | Enables compact, high-density buck converter layouts with thermal pad soldered to PCB ground for <13°C/W effective θJB. |
Applications
| Mobile Core Regulators | High-Frequency DC-DC Converters |
|---|---|
Use Scenario: Power delivery to CPU/GPU cores in ultrabooks and tablets with dynamic voltage scaling. IC Role / Device Role / Timing Role: Synchronous buck gate driver controlling high-side/low-side N-FETs in single-phase or multiphase VRs. Use Value: Adaptive zero-crossing and SKIP mode reduce light-load quiescent current by >40% versus fixed dead-time drivers, extending battery runtime. | Use Scenario: Point-of-load (POL) conversion in telecom baseband cards operating at 500–600 kHz switching frequency. IC Role / Device Role / Timing Role: High-speed gate driver enabling <35 ns rise/fall times and <20 ns non-overlap for efficient 25 A output stages. Use Value: 1.0-Ω high-side source and 0.4-Ω low-side sink resistances minimize gate drive losses, sustaining >92% efficiency at 20 A output. |
| High-Input-Voltage DC-DC | Multiphase DC-DC Converters |
Use Scenario: Industrial 24 V input-to-5 V/3.3 V conversion for programmable logic controllers (PLCs) and motor drives. IC Role / Device Role / Timing Role: Robust gate driver supporting 30 V SW node rating and –40°C to 105°C operation in harsh ambient conditions. Use Value: Absolute maximum SW rating of 30 V and guaranteed operation up to 28 V input enables direct use with unregulated 24 V rails without pre-regulation. | Use Scenario: Phase-interleaved VRMs for AI accelerators requiring >100 A total output with tight transient response. IC Role / Device Role / Timing Role: Per-phase synchronous driver synchronized to phase-shifted PWM inputs; supports staggered SKIP activation per phase. Use Value: Independent SKIP and PWM inputs allow per-phase DCM/FCCM control, reducing output ripple and improving load-step response vs. global mode control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS51601DRBR | Non-A version; lacks adaptive zero-crossing calibration and uses fixed dead-time instead of adaptive logic. | Lower light-load efficiency in DCM; less suitable for battery-powered devices requiring ultra-low IQ. | Select TPS51601ADRBR when adaptive zero-crossing and tighter dead-time control are required for >90% efficiency below 1 A load. |
| LM5113SDX/NOPB | Higher VSW rating (65 V), no integrated BST switch, requires external bootstrap diode/capacitor. | Better suited for 48 V intermediate bus applications but increases BOM count and layout complexity. | Choose LM5113SDX/NOPB only when input voltage exceeds 30 V or when discrete bootstrap implementation is preferred for cost or reliability reasons. |
Compared with TPS51601DRBR, the TPS51601ADRBR delivers measurable light-load efficiency gains via adaptive zero-crossing calibration; compared with LM5113SDX/NOPB, it reduces component count and layout area through integrated bootstrap switching-critical for space-constrained mobile and embedded designs.
Availability
TPS51601ADRBR is available at Aetrix Electronics and suitable for mobile core regulators, high-frequency DC-DC converters, and high-input-voltage industrial power supplies requiring stable component supply and long-term production continuity.
Supply support for TPS51601ADRBR 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 specializing in analog, embedded processing, and power management technologies, with over 90 years of innovation in high-reliability electronic components.
The TPS51601A product line delivers high-efficiency synchronous buck gate drivers optimized for mobile computing, server VRMs, and industrial POL converters where adaptive timing, thermal performance, and small-footprint integration are critical.
FAQ
What is the function of the SKIP pin on the TPS51601ADRBR?
The SKIP pin on the TPS51601ADRBR is an active-low input that selects between discontinuous conduction mode (DCM) and forced continuous conduction mode (FCCM). When SKIP is LOW, adaptive zero-crossing detection is enabled and DRVL turns OFF at inductor current zero crossing. When SKIP is HIGH, zero-crossing detection is disabled and DRVL remains HIGH while PWM is LOW, enforcing FCCM. This behavior is fully documented in the SLUSAP3 datasheet Section 8.3.5.
Does the TPS51601ADRBR require an external bootstrap diode?
No, the TPS51601ADRBR does not require an external bootstrap diode. It integrates a dedicated bootstrap switch (BST FET) with 4–20 Ω on-resistance, gated by the DRVL signal to charge the BST capacitor during low-side conduction. This eliminates diode forward voltage drop and improves high-side gate drive voltage regulation, especially under high-duty-cycle conditions.
What is the maximum allowable SW node voltage for the TPS51601ADRBR?
The absolute maximum SW node voltage for the TPS51601ADRBR is 30 V, with a recommended operating maximum of 28 V. This rating is specified in the Absolute Maximum Ratings table (Section 6.1) of the SLUSAP3 datasheet. Exceeding 30 V risks permanent damage to the internal level-shift circuitry and SW pin ESD protection structures.
How does adaptive dead-time control work in the TPS51601ADRBR?
Adaptive dead-time control in the TPS51601ADRBR monitors DRVH-SW and DRVL-GND voltages in real time. The internal logic delays DRVL turn-on until DRVH-SW falls below ~1 V and DRVH falls below ~1 V, ensuring high-side FET turn-off is complete. Similarly, DRVH turn-on is delayed until DRVL-GND falls below ~1 V. This eliminates fixed timing margins and minimizes non-overlap time to 5–20 ns across process/voltage/temperature.
What package type and thermal characteristics apply to the TPS51601ADRBR?
The TPS51601ADRBR uses an 8-pin 3 mm × 3 mm SON (DRB) package with exposed thermal pad (PwrPAD). Its thermal metrics include θJA = 42.6°C/W (JEDEC high-K board), θJB = 18.9°C/W, and ψJB = 19.1°C/W. The thermal pad must be soldered to a PCB ground plane for optimal thermal and mechanical performance, as specified in TI's SLUA271 layout guide.
TPS51601ADRBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 5.5V
- Logic Voltage - VIL, VIH:
- 0.7V, 4V
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 15ns, 10ns
- Operating Temperature:
- -40°C ~ 105°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SON (3x3)
TPS51601ADRBR FAQ
1.How can I place an order for TPS51601ADRBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS51601ADRBR 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 TPS51601ADRBR reliable?
The price and inventory of TPS51601ADRBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS51601ADRBR is usually 5 days.
3.What payment methods are accepted for TPS51601ADRBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS51601ADRBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS51601ADRBR?
TPS51601ADRBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS51601ADRBR 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 TPS51601ADRBR?
For technical support, including TPS51601ADRBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS51601ADRBR requirements.
6.How does Aetrix verify that TPS51601ADRBR is sourced from the original manufacturer or authorized distributors?
All TPS51601ADRBR 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 TPS51601ADRBR meets industry standards.
7.What is the process for return or replacement of TPS51601ADRBR?
All TPS51601ADRBR units undergo pre-shipment inspection (PSI). If there is an issue with TPS51601ADRBR, 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 TPS51601ADRBR part is unused and in its original packaging.
Return procedure for TPS51601ADRBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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