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Infineon Technologies TLS4120D0EPV33XUMA1
- Part No.:
- TLS4120D0EPV33XUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-PowerTSSOP (0.154", 3.90mm Width)
- Datasheet:
-
TLS4120D0EPV33XUMA1.pdf
- Description:
- IC REG BUCK 3.3V 2A TSDSO-14-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,428
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Product details
Overview
TLS4120D0EPV33XUMA1 from Infineon Technologies is a 2 A, 2.8 MHz synchronous step-down DC-DC regulator with fixed 3.3 V output, ±1.5% feedback voltage accuracy in PWM mode, and integrated high-side/low-side MOSFETs. Designed for automotive battery cranking scenarios, it operates across 3.7–35 V input, supports 100% duty cycle, and delivers stable power to ADAS sensor modules.
For engineers reviewing the TLS4120D0EPV33XUMA1 datasheet, TLS4120D0EPV33XUMA1 pinout, TLS4120D0EPV33XUMA1 application, or TLS4120D0EPV33XUMA1 equivalent, key selection criteria include its AEC-Q100 qualification, spread-spectrum EMI reduction, PFM light-load efficiency, ultra-low 1 µA shutdown current, and reset output with adjustable undervoltage threshold.
Technical Context
This buck regulator employs peak-current-mode PWM control with automatic transition to PFM at light loads, enabling high efficiency across wide load ranges. Its dual-frequency range (320–560 kHz / 1.6–2.8 MHz) allows coil optimization for size or EMI performance, while synchronization input (SYNC) enables deterministic timing in multi-rail systems.
The device integrates analog functions including soft-start ramp generator, bandgap reference, overvoltage/undervoltage monitoring on FB, and open-drain reset output (RO) with configurable delay via RT resistor. Thermal shutdown and overcurrent protection operate independently of external components, ensuring robust fault handling in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 2 A continuous - supports power delivery to multiple automotive ECUs or radar transceivers without external current boosting. |
| Input voltage range | 3.7 V to 35 V - accommodates cold-crank (4.5 V) and load-dump (35 V) transients per ISO 7637-2 without external protection. |
| Output voltage | Fixed 3.3 V - eliminates external resistor divider, reducing BOM count and improving regulation stability. |
| Feedback accuracy | ±1.5% in PWM mode - ensures precise rail tolerance for sensitive microcontrollers and CAN transceivers. |
| Quiescent current | 31 µA in active PFM mode - extends battery life during vehicle sleep modes (e.g., parking surveillance). |
| Shutdown current | 1 µA typical - meets automotive low-power requirements for always-on domains like telematics wake-up circuits. |
| Switching frequency | 2.8 MHz (high-range default) - enables use of compact 1.0 µH inductors and reduces solution footprint by >40% vs. 500 kHz designs. |
Pinout & Package
Delivered in PG-TSDSO-14 exposed pad package, optimized for thermal dissipation in engine bay and infotainment head units. The exposed pad must be soldered to a large copper heatsink area connected to PGND for junction temperature control up to 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FREQ | Frequency selection input | Resistor-to-GND sets low (320–560 kHz) or high (1.6–2.8 MHz) switching band; open = default 2.8 MHz operation. |
| SYNC | External clock synchronization input | Accepts 300 kHz–3 MHz CMOS clock to align switching edges with system clocks, reducing beat frequencies and EMI peaks. |
| RO | Open-drain reset output | Asserts low when FB falls below programmable undervoltage threshold; requires external pull-up for MCU reset signaling. |
| EN | Enable input with internal pull-down | Logic-high (>2 V) enables regulation; logic-low disables output and activates 1 µA shutdown state. |
| FB | Feedback input | Direct connection to output capacitor node; monitors 3.3 V rail and triggers RO assertion if deviation exceeds ±5%. |
| RT | Reset configuration input | Resistor-to-GND sets reset delay time (1–200 ms) and undervoltage threshold (2.97–3.27 V); GND = default 3.27 V / 1 ms. |
| SW | Switch node | Connects to buck inductor; carries high di/dt switching current - requires short, wide trace and local ceramic decoupling. |
| VS / PGND / AGND | Power supply / power ground / analog ground | VS (pins 6+7) and PGND (pins 8+9) are paralleled for low-impedance path; AGND (pin 4) isolated for noise-sensitive feedback routing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side and low-side MOSFETs | Eliminates need for external power switches and gate drivers, reducing component count and layout complexity in space-constrained automotive modules. |
| Spread spectrum frequency modulation | Reduces peak EMI emissions by >10 dB in 30–1000 MHz band - simplifies compliance with CISPR 25 Class 5 without added shielding or ferrites. |
| Active output discharge | Discharges output capacitor when disabled, preventing residual voltage from interfering with downstream logic sequencing or causing latch-up. |
| Integrated compensation network | Enables stable loop response with only external inductor and output capacitor - no external RC compensation required for standard 10–47 µF ceramic outputs. |
| 100% duty cycle operation | Maintains regulation down to VS = VOUT (3.3 V), critical for cold-crank support where battery drops to 3.5 V while maintaining 3.3 V rail integrity. |
Applications
| Radar Sensor Power Supply | ADAS Domain Controller Core Rail |
|---|---|
|
Use Scenario: Powers 77 GHz radar transceiver ASICs in front-corner modules requiring clean, low-noise 3.3 V under wide input transients. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 3.3 V to RF front-end and digital baseband; provides synchronized clock input for timing coherence across multi-sensor fusion. Use Value: 2.8 MHz switching avoids interference with radar IF bands; spread spectrum minimizes conducted EMI coupling into sensitive RF paths. |
Use Scenario: Supplies core voltage to automotive-grade SoCs (e.g., NXP S32G) in centralized ADAS domain controllers operating across -40°C to 125°C ambient. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with PFM mode extending sleep-mode battery life; reset output signals SoC watchdog timeout during brown-out events. Use Value: ±1.5% FB accuracy ensures SoC functional safety compliance; AEC-Q100 qualification guarantees reliability over 15-year vehicle lifetime. |
| Infotainment Head Unit MCU Rail | Telematics Control Unit (TCU) Power |
|
Use Scenario: Generates 3.3 V for ARM Cortex-A/M cores and LPDDR memory interfaces in infotainment head units subject to load-dump pulses. IC Role / Device Role / Timing Role: Main system regulator with soft-start limiting inrush current during ignition-on; EN pin controlled by body controller for sequenced power-up. Use Value: 35 V absolute max input withstands ISO 7637-2 Pulse 5a (load dump); integrated thermal shutdown prevents damage during prolonged high-ambient operation. |
Use Scenario: Powers LTE/C-V2X modems and GNSS receivers in TCUs requiring ultra-low quiescent current during cellular idle states. IC Role / Device Role / Timing Role: Always-on buck regulator with 1 µA shutdown current; RT-configured reset ensures modem reboots cleanly after battery recovery from deep discharge. Use Value: 31 µA PFM quiescent current extends vehicle park-time battery life; RO signal triggers modem firmware recovery without host processor intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62933RGER | 3.3 V, 3 A, 2.25 MHz, ±1% FB accuracy, 1.2 µA shutdown current; no integrated RT-configurable reset or spread spectrum. | Targeted at industrial/commercial portable devices; lacks AEC-Q100 qualification and automotive thermal rating (Tj max = 125°C). | Preferred for non-automotive high-accuracy, higher-current applications where reset configurability is not required. |
| MPQ4420AGL-AEC1-Z | 3.3 V, 2 A, 2.2 MHz, ±2% FB accuracy, 2.5 µA shutdown current; includes enable and power-good but no reset output or spread spectrum. | AEC-Q100 qualified, but lacks RO pin and RT-based undervoltage threshold adjustment - requires external supervisor IC for reset functionality. | Selected when cost sensitivity outweighs need for integrated reset and EMI mitigation features in entry-level ADAS modules. |
Compared with TPS62933RGER and MPQ4420AGL-AEC1-Z, TLS4120D0EPV33XUMA1 uniquely combines AEC-Q100 qualification, integrated programmable reset, spread-spectrum EMI reduction, and 1 µA shutdown current - making it optimal for safety-critical, space-constrained automotive power nodes where system-level integration reduces bill-of-materials and validation effort.
Availability
TLS4120D0EPV33XUMA1 is available at Aetrix Electronics and suitable for ADAS sensor modules, infotainment head units, and telematics control units requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for TLS4120D0EPV33XUMA1 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 is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global R&D and manufacturing infrastructure.
This device belongs to the OPTIREG™ switcher product line, engineered specifically for automotive power conversion challenges - including battery cranking resilience, EMI compliance, functional safety, and long-term reliability in harsh environments.
FAQ
What is the purpose of the RT pin on TLS4120D0EPV33XUMA1?
The RT pin configures both reset delay time and output undervoltage threshold via an external resistor to GND. A 100 kΩ resistor sets ~100 ms delay and 3.0 V threshold; GND connection defaults to 1 ms delay and 3.27 V threshold. This eliminates need for external reset supervisors in cost-sensitive automotive designs.
Can TLS4120D0EPV33XUMA1 operate during cold-crank conditions?
Yes - its 3.7 V minimum input voltage and 100% duty cycle capability allow continuous regulation down to VS = VOUT (3.3 V), supporting operation during automotive cold-crank events where battery voltage drops to 3.5 V while maintaining stable 3.3 V output for critical ECUs.
How does spread spectrum frequency modulation improve EMI performance?
By dithering the 2.8 MHz switching frequency ±10% around center frequency, spread spectrum reduces peak radiated and conducted emissions by distributing energy across a wider bandwidth - achieving >10 dB improvement in CISPR 25 Class 5 compliance without adding shielding or filter components.
Is external compensation required for stable operation?
No - the device integrates a complete Type II compensation network. Only the output inductor and bulk/output ceramic capacitors are needed for stable operation across all load and line conditions, significantly simplifying design and reducing PCB area versus controllers requiring external compensation.
TLS4120D0EPV33XUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 14-PowerTSSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.7V
- Voltage - Input (Max):
- 35V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 2.8MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TSDSO-14-5
TLS4120D0EPV33XUMA1 FAQ
1.How can I place an order for TLS4120D0EPV33XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS4120D0EPV33XUMA1 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 TLS4120D0EPV33XUMA1 reliable?
The price and inventory of TLS4120D0EPV33XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS4120D0EPV33XUMA1 is usually 5 days.
3.What payment methods are accepted for TLS4120D0EPV33XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS4120D0EPV33XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS4120D0EPV33XUMA1?
TLS4120D0EPV33XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS4120D0EPV33XUMA1 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 TLS4120D0EPV33XUMA1?
For technical support, including TLS4120D0EPV33XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS4120D0EPV33XUMA1 requirements.
6.How does Aetrix verify that TLS4120D0EPV33XUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS4120D0EPV33XUMA1 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 TLS4120D0EPV33XUMA1 meets industry standards.
7.What is the process for return or replacement of TLS4120D0EPV33XUMA1?
All TLS4120D0EPV33XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS4120D0EPV33XUMA1, 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 TLS4120D0EPV33XUMA1 part is unused and in its original packaging.
Return procedure for TLS4120D0EPV33XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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