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NXP Semiconductors ASL2507SHNY
- Part No.:
- ASL2507SHNY
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
ASL2507SHNY.pdf
- Description:
- BOOST CONVERTER + FSO
- Quantity:
- Payment:
- Shipping:
Inventory:3,931
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Product details
Overview
ASL2507SHNY from NXP Semiconductors is a two-phase automotive-grade DC-DC boost converter IC designed to supply regulated high-voltage bias (up to 80 V) for multichannel LED buck drivers such as ASLx416/17SHN. It integrates two gate drivers, dual PI controllers, SPI interface, limp-home mode, and operates from 5.5 V to 40 V input across −40 °C to +125 °C.
For engineers reviewing the ASL2507SHNY datasheet, ASL2507SHNY pinout, ASL2507SHNY application, or ASL2507SHNY equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive LED lighting use cases, and real alternative part comparisons - all grounded in NXP's official Rev. 1 (26 April 2018) product data sheet.
Technical Context
The ASL2507SHNY implements fixed-frequency peak current-mode control with parabolic slope compensation, supporting configurable two-phase or single-output operation via SPI. Its dual independent regulation loops enable either interleaved two-phase boost on one output or two isolated outputs with programmable ramp-up, overvoltage protection, and phase mapping.
Limp-home mode activates upon SPI communication loss, executing pre-stored NVM settings for fail-safe operation. Internal non-volatile memory stores default configurations including boost voltage, frequency, error detection thresholds, and thermal shutdown at Tsd(otp), ensuring autonomous functionality without MCU supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Two-phase or single-output boost converter with flexible virtual-to-physical phase mapping |
| Input Voltage Range | 5.5 V to 40 V - supports direct battery connection in 12 V/24 V automotive systems |
| Max Output Voltage | 80 V - sufficient to drive ASLx416/17SHN LED buck drivers under worst-case diode drop |
| Switching Frequency | 125 kHz to 700 kHz - programmable via SPI clock divider registers (09h/0Ah) with integer division |
| Accuracy | ±3 % output voltage regulation - achieved via dual integrated PI controllers and feedback sensing (FB1/FB2) |
| Operating Temperature | −40 °C to +125 °C ambient - AEC-Q100 Grade 1 qualified for under-hood automotive deployment |
| Package | HVQFN32 (5 × 5 × 0.85 mm) with exposed thermal pad - optimized for thermal dissipation in compact LED headlamp modules |
Pinout & Package
Housed in HVQFN32 (SOT617-12) package with 32-pin layout and exposed thermal pad soldered to PCB ground for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G1 | Phase 1 gate driver output | Drives external low-side N-channel MOSFET in first boost phase; supports logic- or standard-level FETs |
| G2 | Phase 2 gate driver output | Drives second external low-side N-channel MOSFET; independently configurable per register 02h/0Fh/10h |
| FB1 | Output 1 feedback input | Resistive divider input for VO1 regulation; connects to output of first boost stage or combined output |
| FB2 | Output 2 feedback input | Resistive divider input for VO2 regulation; enables true dual-output configuration when G1/G2 mapped separately |
| SNH1 / SNL1 | Phase 1 current sense high/low | Differential inputs for peak current sensing in first boost phase; used for slope-compensated current-mode control |
| SNH2 / SNL2 | Phase 2 current sense high/low | Differential inputs for second phase current sensing; supports interleaved or independent operation |
| VGG | Gate driver supply | Internally regulated adjustable supply for G1/G2; programmable via SPI to match MOSFET VGS requirements |
| VBAT | Battery supply input | Main power input (5.5–40 V); feeds internal regulators and enables undervoltage lockout (UVLO) monitoring |
| EN | Enable input | Active-high digital enable; pulls quiescent current < 5 μA when low; initiates reset or configuration mode transitions |
| SCLK / SDI / SDO / CSB | SPI interface signals | Full-duplex 4-wire SPI (mode 0) for configuration, diagnostics (temp, VBAT, VGG, VO), and limp-home register access |
Key Features
| Feature | Design Value |
|---|---|
| Limp-home mode | Automatically engages on SPI failure using NVM-stored configuration - ensures continued LED bias supply without MCU intervention |
| Programmable spread spectrum | Reduces EMI peaks via configurable frequency dithering (registers 0Bh/0Ch); supports EMC-compliant automotive lighting designs |
| Dual independent PI controllers | Enables simultaneous regulation of two outputs or interleaved control of one output - improves transient response and reduces output ripple |
| Configurable phase mapping | Virtual phases (V1_1–V2_4) mapped to physical G1/G2 via registers 02h/0Fh/10h - supports flexible topologies without hardware change |
| Integrated slope compensation | Parabolic compensation tracks frequency and output voltage (registers 13h/14h); stabilizes current-mode control across full operating range |
Applications
| Daytime Running Lights (DRL) | Adaptive Front Lighting System (AFS) |
|---|---|
Use Scenario: Continuous high-brightness white LED operation during daylight hours, requiring stable >40 V bias under varying battery conditions. IC Role / Device Role / Timing Role: Two-phase boost converter supplying regulated 48 V to ASLx416SHN buck driver; interleaved operation minimizes input/output ripple. Use Value: ±3 % output accuracy and limp-home mode ensure DRL remains illuminated even during transient SPI faults - meeting ISO 11452-2 immunity requirements. |
Use Scenario: Dynamic beam shaping using multiple LED strings with independent dimming, demanding two isolated high-voltage rails. IC Role / Device Role / Timing Role: Dual-output configuration (VO1 = 52 V, VO2 = 46 V) driving separate ASLx417SHN channels for horizontal/vertical axis control. Use Value: Independent PI loops and FB1/FB2 feedback enable precise per-string regulation - critical for pixel-level beam control without crosstalk. |
| LED Headlamp Low Beam | Cornering Light Module |
Use Scenario: High-intensity steady-state illumination requiring thermal robustness and fault resilience in engine compartment environments. IC Role / Device Role / Timing Role: Single-output two-phase boost delivering 60 V to ASLx416SHN; phase interleaving reduces EMI and inductor size vs. single-phase design. Use Value: AEC-Q100 Grade 1 rating and −40 °C to +125 °C operation guarantee reliability at junction temperatures up to 150 °C - validated per JESD22-A108. |
Use Scenario: Short-duration, high-current activation during vehicle turning maneuvers, requiring fast startup and overvoltage protection. IC Role / Device Role / Timing Role: Configured in single-output mode with programmable ramp-up (register 1Fh) and OVP threshold (register 05h) to prevent LED stress during transients. Use Value: 40–4040 μs step-time and 0.7–5.6 V step-size ramp control eliminates inrush current - extending LED lifetime in cyclic cornering applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-phase automotive boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4332GQ-AEC1 | Single-chip two-phase synchronous boost; no limp-home mode; requires external current sense resistors | Lacks NVM-based fail-safe operation; limited diagnostic read-back capability (no junction temp/VGG monitoring) | Preferred where cost-sensitive BOM and synchronous rectification outweigh need for autonomous limp-home behavior |
| LM5122MQ-Q1 | Two-phase controller with external gate drivers; no integrated NVM or SPI diagnostics; analog-only configuration | No limp-home mode or SPI-based runtime reconfiguration; relies on external MCU for fault handling | Selected when design requires higher peak current (>15 A) and discrete driver flexibility, accepting added system complexity |
Compared with MPQ4332GQ-AEC1 and LM5122MQ-Q1, ASL2507SHNY uniquely integrates limp-home mode, dual PI control, and comprehensive SPI diagnostics - enabling safer, more autonomous LED lighting systems without external supervision.
Availability
ASL2507SHNY is available at Aetrix Electronics and suitable for automotive LED lighting, adaptive front lighting systems, and headlamp control modules requiring stable component supply, AEC-Q100 compliance, and fail-safe operation.
Supply support for ASL2507SHNY 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
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive power management and lighting ICs.
The ASL2507SHNY belongs to NXP's ASL automotive LED driver companion family, engineered specifically to provide intelligent, safety-critical high-voltage bias for multichannel LED buck controllers in next-generation headlamps.
FAQ
What is the primary function of the ASL2507SHNY in an automotive LED lighting system?
The ASL2507SHNY serves as a two-phase DC-DC boost converter that generates a stable, programmable high-voltage supply (up to 80 V) for downstream LED buck drivers like the ASLx416/17SHN. It regulates output voltage with ±3 % accuracy, supports both interleaved and dual-output configurations, and ensures continuous operation via limp-home mode during SPI communication loss - making it essential for safety-critical automotive lighting.
Does the ASL2507SHNY support dual independent outputs, and how is this configured?
Yes, the ASL2507SHNY supports two independent regulated outputs (VO1 and VO2) through dedicated feedback pins FB1 and FB2. Configuration is performed via SPI registers: gate driver association (register 02h), virtual phase mapping (registers 0Fh/10h), and individual loop parameters (registers 11h–14h). This allows true separation - e.g., VO1 powering low-beam strings and VO2 powering cornering LEDs - with independent voltage targets and protection thresholds.
How does limp-home mode operate in the ASL2507SHNY, and what triggers it?
Limp-home mode activates automatically when SPI communication is lost - detected by timeout or invalid command sequences. The ASL2507SHNY then executes its pre-programmed NVM configuration (including output voltages, frequency, ramp settings, and protection thresholds) without MCU involvement. During this mode, only the limp-home control register remains writable; all others are read-only, ensuring deterministic, fail-safe LED bias delivery.
What thermal and electrical protections are built into the ASL2507SHNY?
The ASL2507SHNY includes junction temperature monitoring (readable via SPI), thermal shutdown at Tsd(otp), input undervoltage lockout (UVLO), output overvoltage protection (OVP) with programmable thresholds (registers 05h/06h), and gate halt on OVP detection. It also features internal slope compensation and current sense validation to prevent subharmonic oscillation - collectively meeting ASIL-B functional safety requirements for LED lighting subsystems.
Can the ASL2507SHNY be used without an external microcontroller, and what capabilities remain active?
Yes - in autonomous mode (AUTO = 1, CFG_DN = 0), the ASL2507SHNY operates using its NVM-stored configuration without SPI interaction. All core functions remain active: dual-phase boost conversion, PI regulation, limp-home execution, thermal monitoring, UV/OV protection, and gate driver control. Only dynamic reconfiguration (e.g., changing output voltage mid-operation) requires SPI; basic illumination functionality is fully self-sustaining.
ASL2507SHNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- -
- Topology:
- -
- Internal Switch(s):
- -
- Number of Outputs:
- -
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ASL2507SHNY FAQ
1.How can I place an order for ASL2507SHNY through Aetrix?
Please submit a Request for Quotation (RFQ) for ASL2507SHNY 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 ASL2507SHNY reliable?
The price and inventory of ASL2507SHNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASL2507SHNY is usually 5 days.
3.What payment methods are accepted for ASL2507SHNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASL2507SHNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASL2507SHNY?
ASL2507SHNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASL2507SHNY 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 ASL2507SHNY?
For technical support, including ASL2507SHNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASL2507SHNY requirements.
6.How does Aetrix verify that ASL2507SHNY is sourced from the original manufacturer or authorized distributors?
All ASL2507SHNY 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 ASL2507SHNY meets industry standards.
7.What is the process for return or replacement of ASL2507SHNY?
All ASL2507SHNY units undergo pre-shipment inspection (PSI). If there is an issue with ASL2507SHNY, 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 ASL2507SHNY part is unused and in its original packaging.
Return procedure for ASL2507SHNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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