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Infineon Technologies TLS4120D0EPVXUMA1
- Part No.:
- TLS4120D0EPVXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-PowerTSSOP (0.154", 3.90mm Width)
- Datasheet:
-
TLS4120D0EPVXUMA1.pdf
- Description:
- IC REG BUCK ADJ 2A TSDSO-14-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,551
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Product details
Overview
TLS4120D0EPVXUMA1 from Infineon is a 2.8 MHz synchronous step-down DC-DC regulator for automotive systems, delivering up to 2 A output current with adjustable 3.0–10.0 V output voltage, ±1.5% feedback accuracy in PWM mode, and integrated high-side/low-side MOSFETs. It supports battery cranking (3.7–35 V input), 100% duty cycle operation, and operates across -40°C to +150°C junction temperature.
For engineers reviewing the TLS4120D0EPVXUMA1 datasheet, TLS4120D0EPVXUMA1 pinout, TLS4120D0EPVXUMA1 application, or TLS4120D0EPVXUMA1 equivalent, key selection criteria include its AEC-Q100 qualification, spread-spectrum EMI reduction, PFM light-load efficiency, and reset monitoring capability for safety-critical ADAS and infotainment power rails.
Technical Context
This buck regulator uses peak-current-mode PWM control with selectable switching frequency bands (320–560 kHz or 1.6–2.8 MHz), synchronized via external clock on SYNC pin and modulated via spread-spectrum on SSON. The internal compensation network eliminates external type-II compensation components.
It integrates undervoltage/overvoltage monitoring on FB, overcurrent/overload protection with hiccup-mode recovery, thermal shutdown, and active output discharge during disable. Reset functionality is configurable via RT resistor for delay and threshold, with open-drain RO output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2 A continuous - supports high-power ECUs 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 |
| Output Voltage Range | 3.0 V to 10.0 V adjustable - enables single IC to power diverse rails (e.g., 3.3 V MCU, 5 V sensor, 8.5 V camera) |
| Feedback Accuracy | ±1.5% in PWM mode - ensures tight regulation under dynamic load steps in safety-critical domains |
| Quiescent Current | 31 µA in PFM mode - extends battery life in always-on vehicle modules |
| Switching Frequency | 2.8 MHz (high-band default) - allows use of compact 1.0 µH inductors and reduces EMI filter size |
| Thermal Range | Tj = −40°C to +150°C - qualified for under-hood placement per AEC-Q100 Grade 0 |
Pinout & Package
Delivered in PG-TSDSO-14 exposed-pad package with thermal pad soldered to PCB ground plane for enhanced heat dissipation in high-power automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FREQ | Frequency selection input | Resistor-to-GND sets low-band (320–560 kHz) or open/high-band (1.6–2.8 MHz); avoids external oscillator component |
| SYNC | External clock synchronization input | Accepts 320 kHz–2.8 MHz CMOS clock; enables multi-rail phase interleaving to reduce input ripple |
| RO | Open-drain reset output | Asserts low when FB falls below threshold; requires external pull-up for system-level reset signaling |
| EN | Enable control with internal pull-down | Active-high logic; simplifies power sequencing without external biasing circuitry |
| FB | Feedback voltage sensing node | Monitors output via resistor divider; enables precise regulation and UV/OV fault detection |
| RT | Reset timing/threshold configuration | Resistor-to-GND sets reset delay (1–200 ms) and undervoltage threshold (2.7–9.5 V) |
| SW | Switch node | Connects directly to power inductor; dual-pin layout (10+11) reduces parasitic inductance and improves EMI |
| VS | Main supply input | Dual-pin (6+7) connection lowers impedance path for high di/dt currents during load transients |
| PGND | Power ground return | Dual-pin (8+9) with exposed pad grounding minimizes ground bounce and thermal resistance |
| AGND | Analog reference ground | Separate analog ground pin isolates sensitive feedback and oscillator circuits from noisy power paths |
| SSON | Spread-spectrum enable | Active-high signal activates dithering to lower peak EMI emissions by >10 dB in conducted tests |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stages | High-side and low-side MOSFETs co-packaged with driver - eliminates discrete FET selection, gate drive design, and layout complexity |
| Soft-Start Ramp Generator | Internal linear ramp limits inrush current - prevents input voltage sag and avoids false resets during power-up |
| Active Output Discharge | Internal NMOS discharges output capacitor when disabled - ensures fast, controlled rail collapse for safe processor shutdown |
| Light-Load PFM Mode | 31 µA quiescent current with automatic transition from PWM - maintains >85% efficiency at 1 mA load for always-on telematics |
| 100% Duty Cycle Operation | Direct pass-through mode when VIN ≤ VOUT - sustains regulated output during deep battery cranking (e.g., 5.5 V → 5.0 V) |
Applications
| ADAS Camera Power Supply | Infotainment SoC Core Rail |
|---|---|
Use Scenario: Powering 5 MP automotive camera module with real-time image processing and ISP. IC Role / Device Role / Timing Role: Primary 3.3 V/2 A buck regulator supplying image sensor and video processor core. Use Value: 2.8 MHz switching enables small 1.0 µH inductor and ceramic capacitors, reducing board area by 35% vs. 500 kHz solutions. | Use Scenario: Delivering stable 0.85 V core voltage to quad-core ARM-based infotainment SoC. IC Role / Device Role / Timing Role: High-accuracy, low-noise point-of-load regulator with programmable soft-start and reset signaling. Use Value: ±1.5% feedback accuracy and active discharge ensure reliable boot sequence and graceful shutdown during ignition cycling. |
| Body Control Module (BCM) Subsystem | Automotive Telematics Unit (TCU) |
Use Scenario: Generating 5.0 V rail for LIN gateway, door lock actuators, and ambient lighting drivers. IC Role / Device Role / Timing Role: Robust main power converter handling wide input range (6–16 V battery) and load dump events. Use Value: 35 V absolute max input rating and integrated overload protection eliminate need for external TVS or current limiting. | Use Scenario: Providing always-on 3.3 V supply for cellular modem, GNSS receiver, and CAN interface in connected TCU. IC Role / Device Role / Timing Role: Low-quiescent-current buck regulator with PFM mode and reset monitoring for wake-up integrity. Use Value: 31 µA IQ in PFM mode extends backup battery life to >120 days; RO output validates rail health before modem initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-Z | 40 V max input, 2 A, fixed 3.3 V or 5 V output; no spread spectrum or reset output | Lacks RO/RT pins and AEC-Q100 qualification; suited for non-safety industrial use only | Select when cost-sensitive non-automotive designs require simple fixed-output conversion without monitoring features |
| TPS54202HDDCR | 6–18 V input, 2 A, 500 kHz–2.2 MHz sync-capable; no 100% duty cycle or battery cranking support | Not rated for >125°C junction or automotive transients; lacks UVLO hysteresis for cranking | Choose for consumer-grade embedded systems where input stays within nominal 12 V range and thermal stress is low |
Compared with MPQ4420AGL-A-Z and TPS54202HDDCR, TLS4120D0EPVXUMA1 uniquely combines AEC-Q100 Grade 0 qualification, 35 V input tolerance, 100% duty cycle, and integrated reset monitoring-making it the only option qualified for direct integration into ASIL-B power domains without additional supervision circuitry.
Availability
TLS4120D0EPVXUMA1 is available at Aetrix Electronics and suitable for ADAS camera modules, infotainment SoC power delivery, and body control unit subsystems requiring stable component supply across automotive production lifecycles.
Supply support for TLS4120D0EPVXUMA1 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 ICs, and security solutions, with global manufacturing and automotive qualification infrastructure.
This device belongs to the OPTIREG™ switcher family, engineered specifically for robust, high-efficiency DC-DC conversion in harsh automotive environments-including engine bay, ADAS, and infotainment systems.
FAQ
What is the purpose of the RT pin?
The RT pin configures both reset delay time and undervoltage threshold via an external resistor to GND. A 100 kΩ resistor yields ~10 ms delay and 4.75 V reset threshold; values from 10 kΩ to 1 MΩ adjust delay from 1 ms to 200 ms and threshold from 2.7 V to 9.5 V. This eliminates need for external supervisor ICs in most automotive microcontroller power domains.
Does TLS4120D0EPVXUMA1 support forced PWM mode?
No-TLS4120D0EPVXUMA1 automatically transitions between PWM and PFM modes based on load current. Below ~200 mA, it enters PFM to minimize quiescent current (31 µA); above that, it operates in constant-frequency PWM. There is no pin or register to force continuous PWM, preserving light-load efficiency without user intervention.
How is thermal performance managed in the PG-TSDSO-14 package?
The PG-TSDSO-14 package features an exposed thermal pad soldered directly to a large PCB copper pour connected to GND. With proper layout (≥4 thermal vias, ≥200 mm² copper area), junction-to-board thermal resistance is 22°C/W, enabling 2 A operation at +105°C ambient without heatsink. The pad must be electrically tied to PGND-not AGND-to avoid noise coupling into feedback.
Can the FREQ pin be left unconnected for default 2.8 MHz operation?
Yes-the FREQ pin defaults to high-band (1.6–2.8 MHz) when left open. No pull-up or pull-down is required. To select low-band (320–560 kHz), connect FREQ to GND via resistor (e.g., 100 kΩ). Leaving it floating ensures maximum switching frequency, minimizing inductor size and improving transient response in space-constrained ADAS modules.
TLS4120D0EPVXUMA1 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:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.7V
- Voltage - Input (Max):
- 35V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 10V
- 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
TLS4120D0EPVXUMA1 FAQ
1.How can I place an order for TLS4120D0EPVXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS4120D0EPVXUMA1 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 TLS4120D0EPVXUMA1 reliable?
The price and inventory of TLS4120D0EPVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS4120D0EPVXUMA1 is usually 5 days.
3.What payment methods are accepted for TLS4120D0EPVXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS4120D0EPVXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS4120D0EPVXUMA1?
TLS4120D0EPVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS4120D0EPVXUMA1 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 TLS4120D0EPVXUMA1?
For technical support, including TLS4120D0EPVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS4120D0EPVXUMA1 requirements.
6.How does Aetrix verify that TLS4120D0EPVXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS4120D0EPVXUMA1 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 TLS4120D0EPVXUMA1 meets industry standards.
7.What is the process for return or replacement of TLS4120D0EPVXUMA1?
All TLS4120D0EPVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS4120D0EPVXUMA1, 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 TLS4120D0EPVXUMA1 part is unused and in its original packaging.
Return procedure for TLS4120D0EPVXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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