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Infineon Technologies TLD5191ESXUMA1
- Part No.:
- TLD5191ESXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- 24-TSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLD5191ESXUMA1.pdf
- Description:
- SYNCHRONOUS MOSFET H-BRIDGE DC-D
- Quantity:
- Payment:
- Shipping:
Inventory:2,973
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Product details
Overview
TLD5191ESXUMA1 from Infineon Technologies is a synchronous H-bridge DC-DC controller IC for high-power LED driving in automotive lighting systems. It supports buck, boost, and buck-boost topologies with 200–700 kHz adjustable switching frequency, ±3% LED current accuracy, and integrated analog/PWM dimming. Designed for full LED headlamps (low/high/matrix beam), it delivers up to 96% efficiency and features spread-spectrum EMC optimization.
For engineers reviewing the TLD5191ESXUMA1 datasheet, TLD5191ESXUMA1 pinout, TLD5191ESXUMA1 application, or TLD5191ESXUMA1 equivalent, key selection criteria include H-bridge gate drive capability (RDS(ON) = 2.3 Ω PU / 1.2 Ω PD), AEC-Q100 Grade 1 qualification, 4.5–55 V power stage input range, and dual feedback (FBH/FBL) for precise constant-current regulation in demanding automotive environments.
Technical Context
The TLD5191ESXUMA1 implements a current-mode regulated H-bridge architecture with independent high-side (HSGD1/HSGD2) and low-side (LSGD1/LSGD2) NMOS drivers, enabling flexible topology selection (buck, boost, buck-boost) based on VIN vs. VOUT relationship. Its embedded PWM engine and analog dimming interface support dynamic light control without external timing components.
It integrates spread-spectrum frequency modulation (always active), forced continuous conduction mode (CCM), and soft-start ramp control to suppress EMI peaks and limit inrush current. Fault diagnostics include overtemperature shutdown with autorestart, output short-to-GND detection, and overvoltage protection signaled via EF pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology Support | Buck, boost, and buck-boost modes-enables single-controller solution across varying input/output voltage relationships in automotive lighting. |
| Switching Frequency | 200–700 kHz, resistor-programmable via FREQ pin-allows EMI tuning and inductor size optimization. |
| LED Current Accuracy | ±3% over temperature and line-ensures consistent luminous output in safety-critical headlamp applications. |
| Power Stage Input Range | 4.5 V to 55 V-supports 12 V and 48 V automotive architectures including start-stop and load-dump conditions. |
| H-Bridge Driver RDS(ON) | 2.3 Ω (high-side pull-up), 1.2 Ω (low-side pull-down) at TJ = 25°C-minimizes gate drive losses and enables efficient 10+ A LED current capability. |
| Diagnostic Output | Open-drain EF pin reporting overtemperature, output short, and overvoltage faults-enables fail-safe system response per ASIL-B requirements. |
| AEC-Q100 Qualification | Grade 1 (−40°C to +125°C ambient)-validates operation under full automotive under-hood thermal stress. |
Pinout & Package
Package: PG-TSDSO-24 (exposed thermal pad), RoHS-compliant, thermally enhanced SOIC variant with 0.65 mm pitch and integrated heatspreading capability via EP connection to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power stage input supply | Accepts 4.5–55 V raw battery input; powers internal bias circuitry and high-side driver bootstrap stages. |
| IVCC | Internal LDO output | 3.3 V regulated supply for logic core and gate drivers; requires local 1 µF ceramic bypass capacitor. |
| HSGD1 / HSGD2 | High-side NMOS gate drivers | Provide bootstrapped gate drive (VIVCC + SWNx) for external upper switches; support 2.3 Ω RDS(ON) turn-on. |
| LSGD1 / LSGD2 | Low-side NMOS gate drivers | Drive lower switches directly from GND to VIVCC; optimized for 1.2 Ω RDS(ON) conduction loss. |
| FBH / FBL | Differential current sense inputs | Enable Kelvin-connected LED current sensing for ±3% accuracy; reject common-mode noise in high-noise automotive harnesses. |
| EF | Error flag output | Active-low open-drain signal indicating thermal shutdown, output short, or overvoltage-connects directly to MCU interrupt pin. |
| PWMI / PWMO | Digital dimming I/O | PWMI accepts external PWM signal or configures embedded PWM engine; PWMO outputs synchronized dimming waveform for cascaded controllers. |
| EN/INUVLO | Enable & UVLO threshold input | Configurable undervoltage lockout (e.g., 9.5 V) and hardware enable/disable-prevents erratic startup during cold cranking. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum switching | Always-active frequency dithering reduces peak EMI by >10 dB, eliminating need for external EMI filters in headlamp modules. |
| Embedded PWM engine | On-chip 8-bit timer generates dimming signals (100 Hz–25 kHz) without MCU intervention-reduces BOM count and firmware overhead. |
| Soft-start ramp control | Externally adjustable via CSOFT_START-limits inrush current and prevents voltage overshoot during ignition cycle transitions. |
| Forced CCM operation | Maintains continuous inductor current across all loads-ensures stable regulation and eliminates audible coil whine in cabin proximity. |
| Dual feedback architecture | Separate FBH/FBL inputs with dedicated current-sense amplifier-enables accurate multi-string LED current balancing in matrix beam systems. |
Applications
| Automotive Full LED Headlamp | Matrix Beam Adaptive Driving Beam (ADB) |
|---|---|
|
Use Scenario: Integrated low-beam/high-beam module with dynamic cut-off control in premium vehicles. IC Role / Device Role / Timing Role: Primary H-bridge controller managing 4–8 LED strings in buck-boost configuration, regulating current per string via FBH/FBL. Use Value: Enables precise lumen control (±3% current accuracy) and fast dimming response (<10 µs) required for real-time ADB pixel masking. |
Use Scenario: Pixel-level LED array (e.g., 1024 segments) where individual zones require independent current regulation. IC Role / Device Role / Timing Role: Configured in parallel-channel mode with multiple TLD5191ESXUMA1 units, each controlling 4–8 pixels via synchronized PWMO clock. Use Value: Achieves <1% inter-string current mismatch across channels, critical for uniform brightness and seamless beam shaping. |
| Rear Lamp Voltage Pre-regulator | Commercial Vehicle LED Fog Light |
|
Use Scenario: 24 V commercial vehicle rear lamp cluster requiring stable 12 V rail for LED arrays and CAN transceivers. IC Role / Device Role / Timing Role: Constant-voltage regulator (buck mode) with programmable output via SET resistor divider; EF pin monitors overvoltage events. Use Value: Maintains ±1% output regulation across 15–32 V input range and 0–5 A load, eliminating need for secondary LDOs. |
Use Scenario: Off-road fog light operating in harsh vibration, wide temperature, and high EMI environments. IC Role / Device Role / Timing Role: Boost-mode LED driver powering 12–24 V LED strings from 9–16 V nominal truck battery with load-dump immunity. Use Value: Withstands 120 V/200 ms load-dump pulses per ISO 7637-2; spread spectrum ensures CISPR 25 Class 5 compliance without shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar H-bridge LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20051ATP/V+T | Single-channel buck controller only; no H-bridge or boost capability; requires external high-side driver for boost. | Limited to constant-voltage pre-regulation or simple buck LED drivers-not suitable for matrix beam or adaptive headlamp topologies. | Select when cost-sensitive 12 V LED clusters require only buck regulation and lack AEC-Q100 Grade 1 requirement. |
| TPS92692QPWPRQ1 | Two-channel current regulator with integrated MOSFETs; fixed 2.2 MHz switching; no H-bridge or topology flexibility. | Optimized for low-power tail lamps and DRLs; lacks spread spectrum, diagnostic EF pin, and >10 A capability. | Choose for compact 2–5 W applications where board space is constrained and topology flexibility is unnecessary. |
Compared with MAX20051ATP/V+T and TPS92692QPWPRQ1, the TLD5191ESXUMA1 uniquely combines H-bridge topology agility, AEC-Q100 Grade 1 reliability, and embedded diagnostics-making it the only qualified solution for scalable, high-power adaptive front lighting systems requiring functional safety alignment.
Availability
TLD5191ESXUMA1 is available at Aetrix Electronics and suitable for automotive exterior lighting, rear lamp voltage pre-regulation, and commercial vehicle LED fog light applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.
Supply support for TLD5191ESXUMA1 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 industrial control solutions, with global R&D and manufacturing infrastructure.
The TLD5191ESXUMA1 belongs to Infineon's LITIX™ Power family-designed specifically for high-efficiency, fault-resilient LED driving in automotive lighting systems requiring ASIL-B functional safety readiness and EMI robustness.
FAQ
What is the maximum LED string voltage supported by TLD5191ESXUMA1 in boost mode?
In boost configuration, the TLD5191ESXUMA1 supports up to 55 V output voltage-sufficient for driving 15–18 white LEDs in series (3.3 V forward voltage each) from a 12 V automotive supply. This rating is validated under worst-case thermal conditions per AEC-Q100 test profiles and includes margin for transient overvoltage events.
How does the EF pin indicate specific fault conditions?
The EF pin is an open-drain output that pulls low for three distinct faults: device junction temperature exceeding 165°C (with autorestart), output shorted to GND, or output overvoltage >110% of programmed level. Pulse-width encoding is not used; fault type must be determined by correlating EF assertion with system measurements (e.g., VOUT, die temperature).
Can TLD5191ESXUMA1 operate without external MOSFETs?
No. The TLD5191ESXUMA1 is a controller-only IC with integrated gate drivers but no power MOSFETs. External high-side and low-side NMOS devices (e.g., IPB180N10S4-02) must be used for power switching. Its RDS(ON) specs (2.3 Ω PU / 1.2 Ω PD) define driver strength-not internal switch capability.
Is analog dimming compatible with PWM dimming simultaneously?
Yes. The TLD5191ESXUMA1 supports concurrent analog dimming (via voltage applied to PWMI) and PWM dimming (via external signal or embedded engine). Analog sets baseline current level; PWM modulates around that level. Both paths feed into the same error amplifier, ensuring monotonic dimming behavior without step discontinuities.
TLD5191ESXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- LITIX™
- Package/Case:
- 24-TSSOP (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 55V
- Current - Output / Channel:
- -
- Frequency:
- 200kHz ~ 700kHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TSDSO-24
TLD5191ESXUMA1 FAQ
1.How can I place an order for TLD5191ESXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD5191ESXUMA1 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 TLD5191ESXUMA1 reliable?
The price and inventory of TLD5191ESXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD5191ESXUMA1 is usually 5 days.
3.What payment methods are accepted for TLD5191ESXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD5191ESXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD5191ESXUMA1?
TLD5191ESXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD5191ESXUMA1 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 TLD5191ESXUMA1?
For technical support, including TLD5191ESXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD5191ESXUMA1 requirements.
6.How does Aetrix verify that TLD5191ESXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLD5191ESXUMA1 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 TLD5191ESXUMA1 meets industry standards.
7.What is the process for return or replacement of TLD5191ESXUMA1?
All TLD5191ESXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLD5191ESXUMA1, 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 TLD5191ESXUMA1 part is unused and in its original packaging.
Return procedure for TLD5191ESXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLD5191ESXUMA1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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