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Texas Instruments TPS2849PWP
- Part No.:
- TPS2849PWP
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS2849PWP.pdf
- Description:
- IC GATE DRVR HALF-BRIDG 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,288
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Product details
Overview
TPS2849PWP from Texas Instruments is a dual-channel high-current MOSFET driver IC designed for synchronous-buck power supplies, featuring inverting logic control, 4-A peak source/sink capability at 14-V drive voltage, fixed 8-V integrated drive regulator, and adaptive dead-time control. It enables efficient high-current DC/DC power modules with bootstrap high-side operation and TTL-compatible inputs.
For engineers reviewing the TPS2849PWP datasheet, TPS2849PWP pinout, TPS2849PWP application, or TPS2849PWP equivalent, key selection considerations include its inverting input logic, fixed 8-V VDRV output, 14-pin PowerPAD TSSOP package with thermal pad, and shoot-through protection via DT/DELAY-controlled dead time - critical for high-efficiency synchronous rectification in multiphase buck converters.
Technical Context
The TPS2849PWP implements a dual-driver architecture with independent high-side (floating bootstrap) and low-side (ground-referenced) outputs, both rated for ≥4-A peak current. Its fixed 8-V drive regulator eliminates external resistor networks required by adjustable variants (e.g., TPS2839), simplifying layout while optimizing gate drive for common N-channel MOSFETs.
Dead-time management combines fixed internal thresholds and external capacitor-adjustable delay on the DELAY pin, plus adaptive sensing at BOOTLO to prevent cross-conduction. The inverting control logic (HIGHDR low when IN high) distinguishes it from noninverting TPS2848PWP and enables direct interface with controllers requiring inverted gate drive timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4 A source/sink per channel - drives low-rDS(on) N-MOSFETs with fast switching into 3.3-nF loads. |
| Drive Regulator Output | Fixed 8 V - eliminates external feedback resistors; optimized for standard logic-level MOSFETs. |
| Supply Voltage Range | VCC = 10 V to 15 V - requires ≥2 V headroom above VDRV; supports industrial input rails. |
| Rise/Fall Time | ≤65 ns (high-side), ≤40 ns (low-side) at VDRV = 14 V, CL = 3.3 nF - enables high-frequency (>500 kHz) operation. |
| Propagation Delay | tPHL/tPLH ≤ 80 ns (high-side), ≤ 80 ns (low-side) at VDRV = 14 V - ensures tight timing alignment in synchronous topologies. |
| Operating Junction Temp | −40°C to +125°C - qualified for automotive and industrial ambient environments. |
| Package Thermal Resistance | 2.07 °C/W (junction-to-case) - enabled by exposed PowerPAD thermal pad soldered to PCB ground plane. |
Pinout & Package
The TPS2849PWP uses a 14-pin HTSSOP (PWP) package with an exposed thermal pad on the underside, requiring PCB soldering for optimal thermal performance (2.07 °C/W junction-to-case). Dimensions: 5.1 mm × 6.6 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ENABLE (Pin 1) | Global driver enable | TTL-compatible active-high input; forces both HIGHDR and LOWDR low when disabled - prevents unintended FET conduction during startup or fault. |
| IN (Pin 2) | Inverting logic input | High on IN produces low on HIGHDR and high on LOWDR - matches controllers requiring inverted gate drive sequencing. |
| PWRRDY (Pin 3) | Open-drain power-good indicator | Sinks current only when VCC ≥ 10.3 V AND VDRV stable - used to enable downstream controller after full regulation. |
| DELAY (Pin 4) | Adjustable high-side turn-on delay | Capacitor-to-ground sets dead-time extension; compensates for gate-resistor-induced turn-off delays in high-side FET. |
| NC (Pin 5) | No internal connection | Unbonded pin - must remain unconnected; no routing or copper fill allowed. |
| DT (Pin 6) | Dead-time sensing node | Connected to SW node (BOOTLO); detects voltage collapse after high-side turn-off to enable safe low-side turn-on. |
| AGND (Pin 7) | Analog reference ground | Separate from PGND; ties internal references and regulators - must connect to quiet analog ground plane. |
| BOOT (Pin 14) | Bootstrap capacitor top plate | Connects to bootstrap capacitor (0.1–1 µF ceramic); develops floating voltage for high-side driver supply. |
| HIGHDR (Pin 13) | High-side gate driver output | Drives gate of high-side N-MOSFET; capable of 4-A sink/source into capacitive load - requires low-inductance trace to FET gate. |
| BOOTLO (Pin 12) | Bootstrap return / SW node | Connects to junction of high- and low-side FETs; provides return path for bootstrap capacitor and DT sensing. |
| VCC (Pin 11) | Main supply input | 10–15 V input; powers internal logic and regulator - requires ≥1 µF ceramic bypass to PGND adjacent to pin. |
| VDRV (Pin 10) | Fixed 8-V drive regulator output | Stable 8-V rail for gate drive; requires ≥1 µF ceramic bypass to PGND - powers both driver channels. |
| LOWDR (Pin 9) | Low-side gate driver output | Ground-referenced 4-A driver for low-side N-MOSFET - minimal trace inductance critical for EMI control. |
| PGND (Pin 8) | Power ground return | High-current return for driver outputs and VDRV bypass - must tie directly to power ground plane under thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting control logic | Eliminates external inverters when interfacing with PWM controllers that require complementary gate drive polarity. |
| Integrated Schottky bootstrap diode | Reduces external component count by one diode; improves bootstrap efficiency and reliability vs discrete solutions. |
| Adaptive + adjustable dead-time control | Prevents shoot-through via dual mechanism: fixed BOOTLO threshold detection + user-tuned DELAY capacitor timing. |
| PowerPAD TSSOP package | Exposed thermal pad lowers junction-to-board thermal resistance to 2.07 °C/W - enables >2 W continuous dissipation at TA = 70°C. |
| Open-drain PWRRDY with UVLO | Provides system-level power sequencing: asserts only after VCC and VDRV are within spec - avoids premature controller enable. |
Applications
| Server VRM Power Stage | Industrial Motor Drive Half-Bridge |
|---|---|
Use Scenario: High-current, multi-phase 12-V input to 1.2-V/100-A CPU core supply in data center servers. IC Role / Device Role / Timing Role: Dual-channel gate driver controlling parallel high- and low-side N-MOSFETs per phase; delivers precise dead-time control to minimize conduction loss and EMI. Use Value: 4-A peak drive sustains <65 ns rise/fall times into 3.3-nF loads at 14-V VDRV, enabling >1-MHz switching without gate drive limitation. | Use Scenario: 24-V to 48-V DC bus driving brushed DC or BLDC motor via half-bridge in factory automation PLC modules. IC Role / Device Role / Timing Role: High-side/low-side driver with inverting logic, supporting bootstrap operation and TTL-level microcontroller interface. Use Value: Fixed 8-V VDRV optimizes gate overdrive for 25-V-rated logic-level MOSFETs, reducing gate charge time and conduction losses at 10–50 kHz PWM. |
| Telecom DC/DC Module | Automotive ADAS Power Supply |
Use Scenario: Compact 48-V input to 5-V/15-A isolated DC/DC module for base station RF amplifiers. IC Role / Device Role / Timing Role: Synchronous-buck driver in non-isolated front-end stage; leverages PWRRDY for sequenced enable of downstream isolated converters. Use Value: −40°C to +125°C operating range and robust 30-V BOOT-to-PGND rating ensure reliability in telecom outdoor cabinets. | Use Scenario: 12-V battery input to 3.3-V/2-A always-on supply for radar sensor SoCs in automotive ADAS ECUs. IC Role / Device Role / Timing Role: Low-quiescent-current (425 µA in disable mode) driver enabling ultra-low standby power in safety-critical systems. Use Value: ENABLE pin allows full shutdown during vehicle sleep mode; thermal shutdown (155–185°C) protects against under-hood overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2848PWP | Noninverting logic; identical pinout, specs, and package - differs only in IN→HIGHDR polarity. | Used where controller expects same-phase gate drive (e.g., TI UCCx series); requires logic inversion if replacing TPS2849PWP. | Select TPS2848PWP only when system design mandates noninverting behavior - no PCB change needed, but firmware/control logic may require update. |
| LM5113SDX | Single-channel, higher VDD (6–100 V), no integrated regulator; requires external 12-V bias rail and bootstrap components. | Targeted at wide-input industrial/hybrid EV applications; lacks PWRRDY, DT sensing, and fixed VDRV - increases BOM count. | Choose LM5113SDX only for >60-V input systems or where programmable VDD is required; not drop-in compatible due to different channel count and feature set. |
Compared with TPS2849PWP, TPS2848PWP offers identical performance with reversed logic polarity - ideal for controller compatibility swaps - while LM5113SDX trades integration for input voltage range and channel flexibility, demanding additional external circuitry and layout effort.
Availability
TPS2849PWP is available at Aetrix Electronics and suitable for server VRM power stages, industrial motor drive half-bridges, and telecom DC/DC modules requiring stable component supply, high thermal reliability, and precise dead-time control.
Supply support for TPS2849PWP 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 decades of expertise in high-performance power conversion solutions.
The TPS28xx family was designed specifically for synchronous-buck DC/DC converter drivers, emphasizing high peak current, thermal efficiency via PowerPAD packaging, and robust shoot-through protection - targeting high-density, high-efficiency power supplies in computing and industrial markets.
FAQ
What is the logic polarity of the TPS2849PWP?
The TPS2849PWP features inverting logic: a high signal on the IN pin results in a low output on HIGHDR and a high output on LOWDR. This distinguishes it from the noninverting TPS2848PWP and enables direct interface with controllers requiring complementary gate drive signals without external inverters. The TPS2849PWP datasheet confirms this behavior in the "IN" terminal description on page 5.
Does the TPS2849PWP require external components for its drive regulator?
No, the TPS2849PWP integrates a fixed 8-V drive regulator and requires no external resistors or feedback components - unlike the adjustable TPS2839PWP. Only a minimum 1-µF ceramic capacitor from VDRV to PGND is required for stability. This simplifies design and improves reliability in space-constrained applications using the TPS2849PWP.
How does dead-time control work on the TPS2849PWP?
The TPS2849PWP implements dual-mode dead-time control: adaptive sensing at BOOTLO prevents low-side turn-on until the high-side FET fully turns off, while the DELAY pin accepts an external capacitor to fine-tune high-side turn-on delay. This combination prevents shoot-through under varying gate resistor and MOSFET characteristics - a key capability confirmed in the "DEAD-TIME (DT) CONTROL" section of the TPS2849PWP datasheet.
What is the maximum allowable voltage between BOOT and PGND on the TPS2849PWP?
The absolute maximum rating for BOOT-to-PGND voltage on the TPS2849PWP is 30 V, as specified in the "Absolute Maximum Ratings" table (page 5). This rating applies when the high-side driver is active and defines the upper limit for bootstrap capacitor selection and high-side FET drain voltage swing. Exceeding 30 V risks permanent damage to the TPS2849PWP internal circuitry.
Can the TPS2849PWP operate in nonsynchronous mode?
No - the TPS2849PWP lacks a SYNC pin (unlike TPS2839PWP), so it operates exclusively in synchronous mode. Its low-side driver is always active when enabled, and there is no provision to disable synchronous rectification. For nonsynchronous operation, designers must select the TPS2839PWP or alternate drivers with explicit SYNC functionality - a distinction clearly documented in the pinout diagrams and functional descriptions of the TPS2849PWP datasheet.
TPS2849PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 10V ~ 15V
- Logic Voltage - VIL, VIH:
- 1V, 2V
- Current - Peak Output (Source, Sink):
- 4A, 4A
- Input Type:
- Inverting
- High Side Voltage - Max (Bootstrap):
- 29 V
- Rise / Fall Time (Typ):
- 65ns, 65ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
TPS2849PWP FAQ
1.How can I place an order for TPS2849PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2849PWP 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 TPS2849PWP reliable?
The price and inventory of TPS2849PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2849PWP is usually 5 days.
3.What payment methods are accepted for TPS2849PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2849PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2849PWP?
TPS2849PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2849PWP 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 TPS2849PWP?
For technical support, including TPS2849PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2849PWP requirements.
6.How does Aetrix verify that TPS2849PWP is sourced from the original manufacturer or authorized distributors?
All TPS2849PWP 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 TPS2849PWP meets industry standards.
7.What is the process for return or replacement of TPS2849PWP?
All TPS2849PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS2849PWP, 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 TPS2849PWP part is unused and in its original packaging.
Return procedure for TPS2849PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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