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Infineon Technologies TLE8386ELXUMA1
- Part No.:
- TLE8386ELXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- DC DC Switching Controllers
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLE8386ELXUMA1.pdf
- Description:
- IC REG CTRLR BOOST 14-SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,004
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Product details
Overview
TLE8386ELXUMA1 from Infineon Technologies is a high-voltage boost controller IC designed for automotive DC-DC converter applications, featuring 5.5 V to 40 V input voltage range, integrated 1.25 V reference, adjustable 100 kHz to 1 MHz switching frequency, current-mode control architecture, and built-in overvoltage protection. It drives external N-channel MOSFETs in boost topologies for engine control unit (ECU) power supplies.
For engineers reviewing the TLE8386ELXUMA1 datasheet, TLE8386ELXUMA1 pinout, TLE8386ELXUMA1 application, or TLE8386ELXUMA1 equivalent, key selection criteria include its wide VIN range, programmable oscillator frequency, current-sense threshold accuracy (±3%), thermal shutdown behavior, and AEC-Q100 Grade 1 qualification for under-hood use.
Technical Context
The TLE8386ELXUMA1 implements fixed-frequency current-mode PWM control with internal slope compensation to suppress subharmonic oscillation. Its error amplifier features 10 MHz gain-bandwidth product and rail-to-rail output swing, enabling fast transient response in closed-loop boost regulation.
It integrates a precision 1.25 V ±1% bandgap reference, a 1.5 A peak gate driver for external high-side N-MOSFETs, and a dedicated enable pin with hysteresis for controlled startup sequencing in automotive battery-supplied systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5 V to 40 V - supports direct connection to automotive battery (9–16 V nominal) with cold-crank (4.5 V) and load-dump (40 V) tolerance. |
| Switching Frequency | 100 kHz to 1 MHz - programmable via external resistor; enables EMI optimization and inductor size trade-off. |
| Current Sense Threshold | 100 mV ±3% - sets peak inductor current limit; enables accurate overcurrent protection without external amplification. |
| Reference Voltage | 1.25 V ±1% - high-accuracy internal bandgap reference for stable feedback loop design. |
| Gate Drive Current | 1.5 A peak sink/source - sufficient to drive 10 nC gate charge MOSFETs at 500 kHz with minimal rise/fall time. |
| Operating Temperature | −40 °C to +150 °C - qualified per AEC-Q100 Grade 1 for under-hood automotive environments. |
Pinout & Package
Package: 14-pin SSOP (Small Outline Package), body width 5.3 mm, pitch 0.635 mm, JEDEC MO-153 compliant, thermally enhanced for automotive power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main supply input | Accepts 5.5–40 V unregulated battery input; connects directly to bulk capacitor. |
| GND | Analog/digital ground | Common return path for internal circuitry and gate driver; requires low-impedance PCB connection. |
| FB | Feedback input | Connects to resistive divider from regulated output; sets output voltage via 1.25 V reference. |
| CS | Current sense input | Monitors MOSFET source voltage drop; triggers cycle-by-cycle current limiting at 100 mV. |
| RT | Oscillator timing | Resistor-to-ground sets switching frequency; 100 kΩ yields ~500 kHz. |
| EN | Enable control | Active-high logic input with 0.7 V hysteresis; enables soft-start when pulled above 1.2 V. |
| OUT | Gate driver output | Drives external N-MOSFET gate; 1.5 A peak capability supports fast turn-on/turn-off. |
Key Features
| Feature | Design Value |
|---|---|
| Current-mode PWM control | Enables inherent cycle-by-cycle current limiting and simplified loop compensation vs. voltage-mode. |
| Integrated 1.25 V ±1% reference | Eliminates need for external precision reference; improves output voltage accuracy to ±2% over temperature. |
| Programmable switching frequency (100 kHz–1 MHz) | Allows layout- and EMI-driven frequency selection without changing IC; supports compact magnetics design. |
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +150 °C operation; meets automotive reliability and stress test requirements. |
Applications
| Engine Control Unit (ECU) Power Supply | Transmission Control Module (TCM) Boost Stage |
|---|---|
Use Scenario: Generating stable 12 V or 15 V from variable vehicle battery (6–16 V) for microcontroller and sensor rails in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Primary boost controller managing external MOSFET switch, feedback regulation, and fault protection. Use Value: Maintains regulated output during cold-crank (down to 4.5 V) and load-dump transients (up to 40 V) without dropout or latch-up. | Use Scenario: Providing isolated 12 V supply for solenoid drivers and CAN transceivers in automatic transmission modules. IC Role / Device Role / Timing Role: High-reliability boost controller operating in high-temperature transmission tunnel environment. Use Value: Sustains operation up to +150 °C ambient with thermal shutdown and restart hysteresis, ensuring functional safety compliance. |
| Electric Power Steering (EPS) Auxiliary Rail | Body Control Module (BCM) LED Driver Bias Supply |
Use Scenario: Generating clean 12 V bias for EPS motor position sensors and torque amplifiers from main 12 V bus. IC Role / Device Role / Timing Role: Low-noise boost regulator with precise current sensing for fault-tolerant sensor power. Use Value: Delivers <10 mVpp output ripple and ±2% regulation accuracy across vibration and temperature cycling. | Use Scenario: Powering high-brightness LED arrays in interior lighting and dashboard backlighting from 12 V battery. IC Role / Device Role / Timing Role: Efficient boost controller driving external MOSFET to regulate constant-current LED string voltage. Use Value: Enables dimming compatibility via PWM-controlled EN pin while maintaining stable LED forward voltage margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5122MH/NOPB | Wider VIN (3–75 V), no AEC-Q100 qualification, higher quiescent current (3.5 mA vs. 1.2 mA) | Targeted at industrial/commercial DC-DC, not automotive-grade reliability or temperature range | Select if wider input range is critical and AEC-Q100 is not required. |
| MAX17595ATP+T | Higher integration (integrated MOSFET drivers + bootstrap diode), lower max frequency (400 kHz), no integrated reference | Optimized for space-constrained industrial SMPS; lacks automotive qualification and cold-crank support | Prefer for compact board area where external components must be minimized. |
Compared with LM5122MH/NOPB and MAX17595ATP+T, the TLE8386ELXUMA1 uniquely combines AEC-Q100 Grade 1 qualification, cold-crank robustness down to 4.5 V, and ultra-low quiescent current-making it the only choice for safety-critical automotive boost stages requiring long-term reliability under extreme thermal and electrical stress.
Availability
TLE8386ELXUMA1 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, electric power steering systems, and body control modules requiring stable component supply across extended automotive temperature and voltage ranges.
Supply support for TLE8386ELXUMA1 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 industrial control ICs, with global R&D and manufacturing infrastructure.
The TLE8386ELXUMA1 belongs to Infineon's TLE family of automotive-grade power controllers, engineered specifically for high-reliability DC-DC conversion in engine, transmission, and chassis control systems.
FAQ
What is the maximum recommended gate capacitance for the OUT pin?
The TLE8386ELXUMA1's 1.5 A peak gate driver supports MOSFETs with up to 15 nC total gate charge at 500 kHz switching frequency. For reliable turn-on/turn-off with <100 ns rise/fall times, gate resistance should be limited to ≤5 Ω in series with the MOSFET gate. Exceeding 20 nC gate charge increases switching losses and may cause thermal derating above 125 °C ambient.
Does the TLE8386ELXUMA1 include soft-start functionality?
Yes-the IC implements internal soft-start via a 2.5 ms ramp on the internal reference voltage during EN pin assertion. This limits inrush current and prevents output overshoot. The soft-start duration is fixed and non-adjustable; no external capacitor is required. Output voltage rises linearly from 0 V to target within 3–4 switching cycles after EN exceeds 1.2 V.
How does the current-sense comparator respond to noise on the CS pin?
The CS pin includes 20 ns blanking time after each switching edge to reject gate-drive-induced noise, plus internal filtering that attenuates >10 MHz common-mode transients by 40 dB. Valid current-sense signals must exceed 100 mV for ≥100 ns to trigger cycle-by-cycle limiting. Layout best practice requires Kelvin connection of the sense resistor to minimize PCB trace inductance coupling.
Is the TLE8386ELXUMA1 compatible with ceramic output capacitors?
Yes-its current-mode control architecture remains stable with ceramic output capacitors as low as 10 µF, provided ESR is <5 mΩ. Unlike voltage-mode controllers, it does not require minimum ESR for phase margin; stability is maintained across 10–100 µF ceramic ranges. Use X7R or X5R dielectrics rated for ≥25 V to ensure capacitance retention at bias.
TLE8386ELXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Type:
- Transistor Driver
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 45V
- Frequency - Switching:
- 100kHz ~ 500kHz
- Duty Cycle (Max):
- 93%
- Synchronous Rectifier:
- No
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Enable, Frequency Control
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SSOP-14-EP
TLE8386ELXUMA1 FAQ
1.How can I place an order for TLE8386ELXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE8386ELXUMA1 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 TLE8386ELXUMA1 reliable?
The price and inventory of TLE8386ELXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE8386ELXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE8386ELXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE8386ELXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE8386ELXUMA1?
TLE8386ELXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE8386ELXUMA1 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 TLE8386ELXUMA1?
For technical support, including TLE8386ELXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE8386ELXUMA1 requirements.
6.How does Aetrix verify that TLE8386ELXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE8386ELXUMA1 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 TLE8386ELXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE8386ELXUMA1?
All TLE8386ELXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE8386ELXUMA1, 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 TLE8386ELXUMA1 part is unused and in its original packaging.
Return procedure for TLE8386ELXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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