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Infineon Technologies TDA21220AUMA1
- Part No.:
- TDA21220AUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TDA21220AUMA1.pdf
- Description:
- IC HALF BRIDGE DRVR 50A IQFN-40
- Quantity:
- Payment:
- Shipping:
Inventory:1,490
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Product details
Overview
TDA21220AUMA1 from Infineon Technologies is a DrMOS power stage integrating high-side and low-side 25 V MOSFETs with a high-frequency gate driver in a single IQFN40 (6 mm × 6 mm × 0.8 mm) package. It delivers up to 50 A average output current, supports >1 MHz PWM switching, and complies with Intel VR12.x specifications for CPU/GPU core voltage regulation in desktop/server VRMs and notebook graphics cards.
For engineers reviewing the TDA21220AUMA1 datasheet, TDA21220AUMA1 pinout, TDA21220AUMA1 application, or TDA21220AUMA1 equivalent, key selection criteria include its 50 A continuous current rating, integrated bootstrap diode, shoot-through protection, tri-state PWM input compatibility with +3.3 V controllers, and 0.8 mm profile for height-constrained POL designs.
Technical Context
The TDA21220AUMA1 implements a synchronous buck power stage with dedicated high-side (GH) and low-side (GL) gate drivers, level-shifted logic, and internal UVLO. Its SMOD# and DISB# pins provide active-low control of low-side gate disable and full device shutdown, respectively.
It features integrated shoot-through protection, a built-in bootstrap diode, and separate VDRV (gate drive supply) and VCIN (logic supply) rails. The PHASE node connects directly to the switch node (VSWH), enabling accurate boot capacitor biasing and minimizing layout parasitics in high-dI/dt applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Avg Output Current | 50 A - Sustained load capability without thermal derating under typical PCB copper area and airflow |
| MOSFET Voltage Rating | 25 V - Safe operation across full VIN range including transient overshoot in VR12.x 12 V input systems |
| Max PWM Frequency | 1.2 MHz - Enables compact magnetics and high transient response in modern multiphase VRMs |
| Package Dimensions | 6 mm × 6 mm × 0.8 mm - Ultra-low profile IQFN40 suitable for stacked VRM layouts and thin GPU modules |
| Logic Supply (VCIN) | +5 V - Powers internal digital logic; compatible with standard 5 V controller bias rails |
| Gate Drive Supply (VDRV) | +5 V - Simultaneously drives both HS and LS MOSFET gates at optimal threshold margin |
| Tri-State PWM Input | +3.3 V compatible - Allows seamless interface with industry-standard digital multiphase controllers |
Pinout & Package
Package: PG-IQFN-40-1 (6 mm × 6 mm × 0.8 mm, 40-pin, exposed VSWH/PGND thermal pads).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SMOD# | Active-low control input | Disables low-side gate drive (GL) independently; used for phase shedding or lossless current sensing |
| 6 GH | Analog output | High-side gate voltage monitor; enables external gate waveform analysis or adaptive timing calibration |
| 7 PHASE | Switch node reference | Internally tied to VSWH; provides return path for BOOT capacitor and level-shifter reference |
| 4 BOOT | Bootstrap supply | Connects to BOOT capacitor; supplies floating high-side gate drive voltage above PHASE |
| 15–29, 31–35, VSWH pad | Power output | Primary high-current switch node connection; must be routed with minimal inductance to reduce ringing |
| 36 GL | Analog output | Low-side gate voltage monitor; supports gate loop diagnostics and dead-time optimization |
| 39 DISB# | Active-low enable | Pulls entire IC into standby when grounded; reduces quiescent current to <100 µA |
| 40 PWM | Digital input | Tri-state compatible +3.3 V logic input; accepts standard PWM signals without level shifting |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Bootstrap Diode | Eliminates external diode component and associated layout complexity while maintaining reliable high-side drive |
| Shoot-Through Protection | Hardware-level interlock prevents simultaneous HS/LS conduction, avoiding destructive shoot-through current |
| Remote Low-Side Disable (SMOD#) | Enables per-phase control in multiphase systems for dynamic phase add/drop and efficiency optimization |
| Separate VCIN/VDRV Rails | Allows independent optimization of logic integrity (VCIN) and gate drive strength (VDRV) under varying thermal conditions |
| Exposed VSWH/PGND Thermal Pads | Provides direct thermal path to PCB ground plane, enabling >40 W power dissipation with 2 oz copper and 4 thermal vias |
Applications
| Desktop/Server VR11.X–VR12.X Core Regulator | GPU Core Voltage Regulation |
|---|---|
Use Scenario: Primary core voltage regulator for Intel Xeon and AMD EPYC processors in dual-socket servers. IC Role / Device Role / Timing Role: Single-phase DrMOS stage controlled by digital multiphase controller (e.g., IR35201); handles up to 50 A per phase with <100 ns dead-time control. Use Value: Enables 1.2 MHz operation with <1% voltage deviation during 30 A/µs load transients, meeting VR12.0 specification ripple limits. | Use Scenario: Core power delivery for NVIDIA A100 and AMD MI250X GPUs on PCIe add-in cards. IC Role / Device Role / Timing Role: High-density POL stage mounted adjacent to GPU die; synchronized via PMBus to match dynamic frequency scaling. Use Value: 0.8 mm height allows placement under GPU cooler; 50 A rating supports peak burst currents >45 A at 0.8 V without thermal throttling. |
| Notebook Graphics Card VRM | DDR5 Memory VDDQ Regulator |
Use Scenario: Compact VRM for discrete mobile GPUs in 16-inch gaming laptops with strict Z-height constraints. IC Role / Device Role / Timing Role: Single-phase DrMOS stage driven by embedded controller; uses SMOD# for light-load phase shedding. Use Value: IQFN40 footprint saves >30% board area vs. discrete MOSFET+driver solutions; achieves >92% efficiency at 20 A/0.9 V. | Use Scenario: Point-of-load regulator supplying VDDQ (1.25 V) to DDR5 memory subsystems in AI accelerators. IC Role / Device Role / Timing Role: Fast-transient POL stage with tri-state PWM input; interfaces directly with TI TPS53689 controller. Use Value: Integrated shoot-through protection ensures safe operation during rapid VDDQ ramp-up/down sequences required by DDR5 JEDEC spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DrMOS power stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR35203 | 40-pin PQFN, 60 A rating, 1.5 MHz max fSW, requires external bootstrap diode | Higher current capacity but larger thermal footprint; lacks integrated bootstrap diode | Select when >50 A per phase is required and board space permits external diode routing |
| MP86957 | 32-pin QFN, 45 A rating, 1.0 MHz max fSW, integrated current sense amplifier | Lower current and frequency ceiling; adds analog current monitoring not present in TDA21220AUMA1 | Select when real-time current telemetry is prioritized over peak efficiency at 50 A |
Compared with IR35203 and MP86957, the TDA21220AUMA1 offers the best balance of ultra-low profile (0.8 mm), integrated bootstrap diode, and Intel VR12.x compliance-making it optimal for space-constrained, high-efficiency server and GPU VRMs where layout simplicity and thermal density are critical.
Availability
TDA21220AUMA1 is available at Aetrix Electronics and suitable for desktop/server VRMs, GPU core regulators, and DDR5 VDDQ POL applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TDA21220AUMA1 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, and industrial control ICs, with global R&D and manufacturing infrastructure.
The TDA21220 belongs to Infineon's DrMOS product line, engineered specifically for high-efficiency, high-density voltage regulation in advanced microprocessor and GPU power delivery systems compliant with Intel VR11.x/VR12.x standards.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The TDA21220AUMA1 has a maximum junction temperature (TJmax) of 150 °C, as specified in its Absolute Maximum Ratings table. Continuous operation at this limit requires adequate PCB copper area (≥4 cm² 2 oz copper per phase), ≥6 thermal vias under the VSWH/PGND pads, and ≥200 LFM airflow. Derating begins above 130 °C ambient under full 50 A load.
Does the TDA21220AUMA1 require an external bootstrap capacitor?
Yes, an external ceramic bootstrap capacitor (typically 0.1 µF X7R, 25 V) must be placed between BOOT and PHASE pins. The integrated bootstrap diode eliminates the need for an external diode, but the capacitor remains essential to generate the floating high-side gate drive voltage above the switch node potential during HS conduction.
How does the SMOD# pin function during multiphase operation?
SMOD# disables only the low-side gate drive (GL), forcing the phase into high-side-only conduction or freewheeling mode. In multiphase systems, this enables lossless current balancing and phase shedding without disrupting PWM timing across other active phases-critical for dynamic efficiency optimization in VR12.x-compliant controllers.
Is the TDA21220AUMA1 RoHS compliant and lead-free?
Yes, the TDA21220AUMA1 is RoHS compliant and lead-free, as confirmed in Table 1 of the official Infineon datasheet (Revision 2.5, 2013-01-07). It meets EU Directive 2011/65/EU requirements and uses matte tin (Sn) termination finish on all I/O pins and thermal pads.
TDA21220AUMA1 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:
- 50A
- Current - Peak Output:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Voltage - Load:
- 5V ~ 16V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Features:
- Bootstrap Circuit
- Fault Protection:
- Shoot-Through, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-IQFN-40-1
TDA21220AUMA1 FAQ
1.How can I place an order for TDA21220AUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA21220AUMA1 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 TDA21220AUMA1 reliable?
The price and inventory of TDA21220AUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA21220AUMA1 is usually 5 days.
3.What payment methods are accepted for TDA21220AUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA21220AUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA21220AUMA1?
TDA21220AUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA21220AUMA1 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 TDA21220AUMA1?
For technical support, including TDA21220AUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA21220AUMA1 requirements.
6.How does Aetrix verify that TDA21220AUMA1 is sourced from the original manufacturer or authorized distributors?
All TDA21220AUMA1 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 TDA21220AUMA1 meets industry standards.
7.What is the process for return or replacement of TDA21220AUMA1?
All TDA21220AUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TDA21220AUMA1, 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 TDA21220AUMA1 part is unused and in its original packaging.
Return procedure for TDA21220AUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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