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Infineon Technologies TDA21211AUMA1
- Part No.:
- TDA21211AUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TDA21211AUMA1.pdf
- Description:
- IC HALF BRIDGE DRVR 35A IQFN-40
- Quantity:
- Payment:
- Shipping:
Inventory:2,082
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Product details
Overview
TDA21211AUMA1 from Infineon Technologies is a high-performance DrMOS multichip module integrating a 35A-rated synchronous buck power stage with matched high-side and low-side MOSFETs plus gate driver in a single 40-pin IQFN (6 mm × 6 mm × 0.8 mm) package. It supports input voltages from +5 V to +30 V, delivers up to 35 A average output current, operates at switching frequencies up to 1.2 MHz, and is Intel-compliant for VR11.x/VR12 CPU/GPU voltage regulation in notebooks and graphics cards.
For engineers reviewing the TDA21211AUMA1 datasheet, TDA21211AUMA1 pinout, TDA21211AUMA1 application, or TDA21211AUMA1 equivalent, key selection criteria include its 35 A continuous current rating, dual 5 V gate drive (VDRV/VCIN), active bootstrap circuit, shoot-through protection, and three-state PWM compatibility with 3.3 V/5 V logic interfaces.
Technical Context
The TDA21211AUMA1 implements a fully integrated synchronous buck power stage with independent high-side (GH) and low-side (GL) gate drivers, UVLO monitoring on both VCIN and BOOT rails, and active shoot-through prevention logic. Its internal architecture couples optimized 5 V–driven MOSFETs with a robust level-shifting driver capable of operating at switch-node potentials from –1 V to +30 V.
It features dedicated control pins including SMOD# (low-side disable), DISB# (global disable), and PWM with tri-state functionality-enabling precise phase management in multi-phase VR designs. The IC uses separate CGND (control ground) and PGND (power ground) references to minimize noise coupling between logic and power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Avg Output Current | 35 A - defines maximum continuous load capability per phase without derating |
| Input Voltage Range | +5 V to +30 V - supports wide-range DC input for server/desktop VR applications |
| Switching Frequency | Up to 1.2 MHz - enables compact magnetics and high transient response in POL converters |
| VDRV / VCIN Supply | 5 V ±0.5 V - powers both gate driver stages and internal logic; requires local ceramic decoupling |
| Thermal Resistance θJS | 5 K/W - junction-to-solder-point value confirms efficient heat transfer via exposed VSWH/PGND pads |
| UVLO Thresholds | VUVLO_R = 2.9–3.9 V, VUVLO_F = 2.5–3.3 V - ensures reliable startup/shutdown sequencing under bias rail variation |
| Propagation Delays | T_pdhu = 15 ns, T_pdll = 10 ns - enables tight timing control for high-frequency multi-phase synchronization |
Pinout & Package
Package: PG-IQFN-40-1, 6 mm × 6 mm × 0.8 mm, with thermally enhanced exposed VSWH and PGND pads on bottom surface. Requires soldering to PCB thermal plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM (Pin 40) | Three-state logic input | Accepts 3.3 V/5 V PWM signals; high-impedance state enables phase shedding in multi-phase VR |
| DISB# (Pin 39) | Global disable control | Active-low signal that forces GH/GL low and disables all driver outputs |
| SMOD# (Pin 1) | Low-side gate disable | Active-low control to turn off GL while GH remains functional for diagnostic or fault isolation |
| VSWH (Pins 15,29–35) | High-current switch node | Internally connected to HS FET drain and LS FET source; serves as output and bootstrap reference |
| PGND (Pins 16–28) | Power ground return | Multiple low-inductance vias required to minimize switching loop inductance and EMI |
| CGND (Pins 5,37) | Control ground reference | Must be externally tied to PGND at single point to avoid ground bounce in sensitive logic paths |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Bootstrap Circuit | Active PMOS-based boot structure eliminates external diode/capacitor, reducing BOM count and layout area |
| Shoot-Through Protection | Dedicated hardware logic prevents simultaneous HS/LS FET conduction, eliminating destructive cross-conduction |
| Separate CGND/PGND Planes | Isolates noise-sensitive control circuitry from high-di/dt power loops, improving PWM timing integrity |
| Tri-State PWM Input | Enables seamless phase shedding in multi-phase VR systems without external logic or gate drivers |
| Intel 6×6 DrMOS Compliance | Guarantees mechanical, electrical, and thermal interoperability with standard VR11.x/VR12 controller ICs |
Applications
| Desktop CPU Voltage Regulation | Notebook GPU Power Delivery |
|---|---|
Use Scenario: Primary Vcore supply for Intel Core i7/i9 processors in ATX motherboards using VR12 controllers. IC Role / Device Role / Timing Role: Single-phase DrMOS power stage delivering up to 35 A at ≤1.2 MHz switching frequency with precise PWM edge alignment. Use Value: Enables high-efficiency operation across light-to-full load due to matched 5 V–optimized MOSFETs and low-loss gate drive. | Use Scenario: Compact, height-constrained GPU core supply in thin-and-light gaming laptops. IC Role / Device Role / Timing Role: High-density power stage with 0.8 mm profile supporting DDR4/DDR5 memory I/O and GPU core rails. Use Value: Achieves >30 W/mm² power density within 36 mm² footprint, meeting strict board space and Z-height limits. |
| Multi-Phase Telecom VR | Graphics Card VRM Module |
Use Scenario: One phase of a 4+1 or 6+2 interleaved VR for network processor SoCs requiring fast transient response. IC Role / Device Role / Timing Role: Synchronized buck stage with DISB# and SMOD# enabling dynamic phase add/drop and fault containment. Use Value: Reduces output ripple by √N and improves thermal distribution across phases without added controller complexity. | Use Scenario: Dedicated VDDQ or SOC rail in PCIe-based discrete GPUs with dual-rail memory subsystems. IC Role / Device Role / Timing Role: Independent DrMOS stage controlled by companion PWM controller for fine-grained rail tuning. Use Value: Supports independent VID programming and fast load-step response (<5 µs) for GPU boost states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DrMOS power stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR35201MTRPBF | 40-pin QFN, 40 A rating, 1.5 MHz max fSW, dual VCIN/VDRV at 5 V, no SMOD# pin | Lacks low-side disable function; requires external bootstrap diode; higher RDS(on) at light load | Preferred where higher peak current and faster switching are prioritized over phase-level fault isolation |
| MP86957GQZ | 32-pin QFN, 35 A rating, 1 MHz max fSW, integrated bootstrap diode, single 5 V supply | No DISB#/SMOD# control; simplified pinout reduces routing but limits advanced VR features | Suitable for cost-sensitive single-phase VR where tri-state PWM and multi-level disable are not required |
Compared with IR35201MTRPBF and MP86957GQZ, the TDA21211AUMA1 uniquely combines Intel-compliant 6×6 packaging, dual disable controls (DISB#/SMOD#), and active bootstrap-making it optimal for VR11.x/VR12 systems demanding phase management, fault resilience, and minimal BOM overhead.
Availability
TDA21211AUMA1 is available at Aetrix Electronics and suitable for desktop CPU voltage regulation, notebook GPU power delivery, multi-phase telecom VR, and graphics card VRM modules requiring stable component supply and long-term industrial lifecycle support.
Supply support for TDA21211AUMA1 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
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and ISO 14001 standards.
The TDA21211AUMA1 belongs to Infineon's DrMOS product line, engineered specifically for high-efficiency, high-density voltage regulator modules targeting Intel VR11.x/VR12-compliant CPU, GPU, and SoC power delivery.
FAQ
What is the recommended PCB layout practice for thermal management of the TDA21211AUMA1?
The TDA21211AUMA1 requires direct thermal connection of its exposed VSWH and PGND pads to inner-layer copper planes using ≥8 thermal vias (0.3 mm diameter) per pad. A minimum 25 mm² copper pour on Layer 2 beneath the package is recommended. CGND must connect to PGND at a single point near Pin 5 to prevent ground loop noise coupling into the control circuitry.
Does the TDA21211AUMA1 support automatic phase shedding in multi-phase configurations?
No-it does not autonomously shed phases. However, its three-state PWM input and DISB# pin allow external VR controller ICs (e.g., ISL63xx, IR35xx series) to dynamically enable/disable individual phases. When PWM is driven to high-impedance state, GH and GL enter high-Z mode, effectively removing that phase from regulation without disrupting others.
Can the TDA21211AUMA1 operate with a 3.3 V PWM input signal?
Yes. The PWM input is compatible with 3.3 V logic levels: VPWM_H threshold is 2.4 V min, and VPWM_L is 0.7 V max. The internal input resistance is 6.5–12.5 kΩ, ensuring robust noise immunity. No level-shifting circuitry is needed when interfacing with 3.3 V microcontrollers or VR controllers.
What failure protections are built into the TDA21211AUMA1?
The device integrates UVLO on VCIN and BOOT rails, hardware-based shoot-through prevention, and active gate pull-down (500 kΩ) on GH/GL during undervoltage events. DISB# and SMOD# provide system-level fault containment. It does not include overtemperature shutdown or overcurrent limiting-those functions must be implemented externally via controller IC or sense-resistor feedback.
TDA21211AUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Half Bridge
- Applications:
- Buck Converters
- Interface:
- PWM
- Load Type:
- Inductive
- Technology:
- DrMOS
- Rds On (Typ):
- -
- Current - Output / Channel:
- 35A
- Current - Peak Output:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Voltage - Load:
- 5V ~ 30V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Features:
- Bootstrap Circuit
- Fault Protection:
- Shoot-Through
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-IQFN-40-1
TDA21211AUMA1 FAQ
1.How can I place an order for TDA21211AUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA21211AUMA1 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 TDA21211AUMA1 reliable?
The price and inventory of TDA21211AUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA21211AUMA1 is usually 5 days.
3.What payment methods are accepted for TDA21211AUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA21211AUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA21211AUMA1?
TDA21211AUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA21211AUMA1 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 TDA21211AUMA1?
For technical support, including TDA21211AUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA21211AUMA1 requirements.
6.How does Aetrix verify that TDA21211AUMA1 is sourced from the original manufacturer or authorized distributors?
All TDA21211AUMA1 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 TDA21211AUMA1 meets industry standards.
7.What is the process for return or replacement of TDA21211AUMA1?
All TDA21211AUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TDA21211AUMA1, 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 TDA21211AUMA1 part is unused and in its original packaging.
Return procedure for TDA21211AUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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