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Texas Instruments TPS2835DR
- Part No.:
- TPS2835DR
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2835DR.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,651
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Product details
Overview
TPS2835DR from Texas Instruments is an inverting-input, dual-channel MOSFET driver optimized for synchronous-buck power stages. It delivers 2.4-A peak high-side source/sink current, supports 4.5–15-V supply voltage, and features adaptive dead-time control to prevent shoot-through. It is used in high-efficiency 3.3-V/3-A DC-DC converters with TL5001A controllers.
For engineers reviewing the TPS2835DR datasheet, TPS2835DR pinout, TPS2835DR application, or TPS2835DR equivalent, key selection criteria include its inverting input logic, integrated Schottky bootstrap diode, CROWBAR overvoltage protection, TTL-compatible control terminals (ENABLE/SYNC/CROWBAR), and SOIC-14 thermal performance at −40°C to 125°C junction temperature.
Technical Context
The TPS2835DR implements a dual-output gate driver architecture with independent high-side (floating bootstrap or ground-referenced) and low-side drivers. Its adaptive dead-time circuit monitors the DT terminal connected to the power FET junction to enforce non-overlapping drive timing, eliminating shoot-through during switching transitions.
Control logic includes TTL-compatible ENABLE (global disable), SYNC (synchronous/nonsynchronous mode selection), and CROWBAR (low-side override for OVP clamping). The inverting input (IN) distinguishes it from the TPS2834DR, enabling direct interface with noninverting PWM controllers without external inversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 15 V - Supports wide-input industrial and telecom DC-DC supplies without external regulation. |
| Peak Output Current | 2.4 A high-side source/sink - Drives large gate capacitance of low-rDS(on) N-channel MOSFETs (e.g., Si4410) in multiphase buck stages. |
| Rise/Fall Time | ≤50 ns (high-side), ≤30 ns (low-side) with 3.3-nF load - Enables >1-MHz switching in compact, high-density power designs. |
| Operating Temperature | −40°C to 125°C virtual junction - Qualified for under-hood automotive and industrial embedded power applications. |
| Input Logic Type | Inverting - IN signal polarity matches standard noninverting PWM controllers (e.g., TL5001A), simplifying system-level timing alignment. |
| CROWBAR Function | TTL-compatible active-low OVP override - Forces low-side FET conduction to clamp output during high-side short, protecting downstream loads. |
| Dead-Time Control | DT terminal tied to FET drain node - Dynamically adjusts turn-on delays based on actual power stage voltage transitions, not fixed timing. |
Pinout & Package
TPS2835DR is packaged in a 14-pin SOIC (D package) with exposed thermal pad not connected internally. Pin 1 is marked by a beveled corner or dot; the package meets JEDEC MS-012 AB and is RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ENABLE | Digital enable input | Active-high TTL signal; pulls both drivers low when logic low - enables full system power sequencing and standby mode. |
| 2 IN | Inverting logic input | Drives high-side and low-side outputs with inverted polarity - matches noninverting PWM controller outputs without external inverters. |
| 3 CROWBAR | OVP override input | Active-low TTL signal; forces LOWDR high and HIGHDR low regardless of IN state - provides hardware-level fault containment. |
| 4, 9, 13 NC | No internal connection | Unbonded pins - must remain unconnected and unstubbed to avoid parasitic coupling or EMI. |
| 5 SYNC | Synchronous mode control | High = synchronous rectification (LOWDR active); Low = nonsynchronous (LOWDR disabled) - selects diode emulation vs. freewheeling FET operation. |
| 6 DT | Dead-time sensing node | Connected to high-side/low-side FET drain junction - enables adaptive timing to prevent shoot-through under varying load and layout conditions. |
| 7 PGND | Power ground return | Low-inductance path for high-current gate drive return - must be routed separately from signal ground to minimize noise coupling. |
| 8 VCC | Driver supply input | 4.5–15 V input; requires local 1-µF ceramic bypass capacitor to PGND - powers internal logic and output stages. |
| 10 LOWDR | Low-side gate driver output | Push-pull output driving N-channel MOSFET source - rated for 3.5-A sink/2.4-A source into 3.3-nF load. |
| 11 BOOTLO | Bootstrap return node | Connects to FET junction; forms return path for bootstrap capacitor - critical for high-side floating bias generation. |
| 12 HIGHDR | High-side gate driver output | Push-pull output driving N-channel MOSFET gate - operates from floating bootstrap rail up to 30 V relative to PGND. |
| 14 BOOT | Bootstrap supply input | Accepts charge from bootstrap capacitor (0.1–1 µF ceramic) - develops floating VCC for high-side driver during high-side conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting input logic | Eliminates need for external inverter when interfacing with standard noninverting PWM controllers like TL5001A. |
| Integrated Schottky bootstrap diode | Reduces external component count and improves bootstrap efficiency by minimizing forward voltage drop and recovery time. |
| Adaptive dead-time control via DT pin | Prevents shoot-through without fixed delay tuning - dynamically responds to real-time FET junction voltage transitions. |
| CROWBAR overvoltage protection | Hardware-level fault response that overrides normal logic to clamp output during high-side FET failure - no firmware dependency. |
| TTL-compatible control inputs | Enables direct interface with microcontrollers, FPGA I/O, and PWM ICs without level-shifting circuitry. |
| Thermally enhanced SOIC-14 package | MSL Level-1 rating and 7.49 mW/°C derating support sustained 2.4-A peak drive in compact industrial PCB layouts. |
Applications
| Server VRM Power Stage | Industrial PLC Power Supply |
|---|---|
|
Use Scenario: 12-V input to 3.3-V/3-A output synchronous buck converter in rack-mounted server voltage regulator modules. IC Role / Device Role / Timing Role: Dual-channel gate driver providing phase-aligned high-side/low-side gate drive with adaptive dead-time to maximize efficiency at 200–500 kHz. Use Value: Achieves 93–94% efficiency at full load while maintaining <50 ns rise/fall times and robust OVP response via CROWBAR. |
Use Scenario: DIN-rail mounted programmable logic controller with isolated 24-V input powering internal 5-V and 3.3-V rails. IC Role / Device Role / Timing Role: High-current gate driver enabling fast-switching, thermally stable buck conversion across −40°C to 85°C ambient. Use Value: −40°C to 125°C junction rating and SOIC thermal derating allow reliable operation in uncooled enclosures with minimal heatsinking. |
| Telecom DC-DC Module | Automotive ADAS Power Management |
|
Use Scenario: Compact 48-V to 12-V intermediate bus converter in 1RU telecom equipment with strict EMI limits. IC Role / Device Role / Timing Role: Gate driver with tight propagation delay matching (±10 ns) and low EMI layout guidance for clean switching waveforms. Use Value: Bootstrap architecture and internal Schottky diode reduce component count and board area versus discrete bootstrap solutions. |
Use Scenario: Power supply for radar sensor ECU requiring ASIL-B compatible fault handling and thermal resilience. IC Role / Device Role / Timing Role: Safety-critical gate driver with hardware CROWBAR and ENABLE-controlled shutdown for fail-safe power stage control. Use Value: Active-low CROWBAR provides deterministic overvoltage clamping independent of software or controller health status. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2835PWP | Same functional spec, HTSSOP-14 PowerPAD package with 2.07 °C/W junction-case thermal resistance vs. SOIC's 11.5 °C/W. | Better thermal performance for high-duty-cycle or high-ambient applications; requires different PCB land pattern and reflow profile (MSL Level-2). | Select TPS2835PWP when board space is constrained and thermal dissipation exceeds SOIC capability; verify stencil design per TI SMT guidelines. |
| TPS2834DR | Noninverting input logic; identical pinout, package, and all other electrical specs including CROWBAR, SYNC, and dead-time control. | Used where PWM controller output is inverting or where system-level logic polarity must match noninverting signal flow. | Choose TPS2834DR only when IN polarity must be noninverting; otherwise TPS2835DR is functionally identical and interchangeable in inverting-control systems. |
Compared with TPS2835PWP, the TPS2835DR offers lower-cost assembly and simpler reflow but higher thermal resistance; compared with TPS2834DR, it provides matched logic polarity for noninverting PWM sources without external gates - critical for timing integrity in high-frequency buck regulators.
Availability
TPS2835DR is available at Aetrix Electronics and suitable for server VRM power stages, industrial PLC power supplies, and telecom DC-DC modules requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for TPS2835DR 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 50 years of innovation in high-reliability power solutions.
The TPS2835DR belongs to TI's high-performance MOSFET driver product line, designed specifically for synchronous-buck DC-DC converters in computing, industrial, and telecom infrastructure where efficiency, thermal robustness, and fault resilience are critical.
FAQ
What is the input logic polarity of the TPS2835DR?
The TPS2835DR features an inverting input (IN) - a high logic level at the IN pin results in a low output on HIGHDR and a high output on LOWDR. This matches standard noninverting PWM controllers like the TL5001A, eliminating the need for external inverters and preserving timing margins in high-frequency buck designs. The TPS2835DR datasheet confirms this behavior in the Functional Block Diagram and Terminal Functions table.
Does the TPS2835DR include an internal bootstrap diode?
Yes, the TPS2835DR integrates a Schottky bootstrap diode between VCC and BOOT terminals. This reduces external component count, improves bootstrap efficiency by lowering forward voltage drop (~0.3 V), and accelerates capacitor recharge during high-side conduction. The internal diode is explicitly documented in the "Detailed Description" section and functional block diagram of the TPS2835DR datasheet.
How does the CROWBAR function protect the power stage in the TPS2835DR?
The CROWBAR function in the TPS2835DR is an active-low, TTL-compatible input that forces LOWDR high and HIGHDR low regardless of IN, ENABLE, or SYNC states. When asserted (logic low), it turns on the low-side FET to clamp the output voltage during high-side FET shorts - preventing overvoltage damage to downstream loads. This hardware-level response is independent of controller firmware and is validated in the TPS2835DR application circuit (Figure 17).
What package options are available for the TPS2835DR?
The TPS2835DR is offered exclusively in the 14-pin SOIC (D) package with tape-and-reel packaging (2500 units per reel). It is distinct from the PWP variant (TPS2835PWP), which uses HTSSOP PowerPAD. The SOIC package has MSL Level-1 rating, NiPdAu lead finish, and is qualified for −40°C to 125°C operation. Package dimensions and land patterns are defined in TI's D0014A outline drawing.
Can the TPS2835DR operate with a 3.3-V logic supply?
No, the TPS2835DR requires a minimum 4.5-V supply on VCC to operate correctly. Its TTL-compatible inputs (IN, ENABLE, SYNC, CROWBAR) have VIH ≥ 0.7×VCC and VIL ≤ 1 V, meaning at 3.3 V the high-level threshold would fall below 2.3 V - incompatible with standard 3.3-V logic families. The recommended operating range is strictly 4.5 V to 15 V, as specified in the "Recommended Operating Conditions" table of the TPS2835DR datasheet.
TPS2835DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 15V
- Logic Voltage - VIL, VIH:
- 1V, 2V
- Current - Peak Output (Source, Sink):
- 2.7A, 2.4A
- Input Type:
- Inverting
- High Side Voltage - Max (Bootstrap):
- 28 V
- Rise / Fall Time (Typ):
- 50ns, 40ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TPS2835DR FAQ
1.How can I place an order for TPS2835DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2835DR 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 TPS2835DR reliable?
The price and inventory of TPS2835DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2835DR is usually 5 days.
3.What payment methods are accepted for TPS2835DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2835DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2835DR?
TPS2835DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2835DR 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 TPS2835DR?
For technical support, including TPS2835DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2835DR requirements.
6.How does Aetrix verify that TPS2835DR is sourced from the original manufacturer or authorized distributors?
All TPS2835DR 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 TPS2835DR meets industry standards.
7.What is the process for return or replacement of TPS2835DR?
All TPS2835DR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2835DR, 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 TPS2835DR part is unused and in its original packaging.
Return procedure for TPS2835DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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