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NXP Semiconductors ASL1500SHNY
- Part No.:
- ASL1500SHNY
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ASL1500SHNY.pdf
- Description:
- IC LED DRIVER CTRLR 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,959
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Product details
Overview
ASL1500SHNY from NXP Semiconductors is an AEC-Q100 Grade 1 qualified single-phase DC-DC boost converter IC designed for automotive LED lighting systems. It delivers programmable output voltage up to 80 V with ±3 % accuracy, operates from 5.5 V to 40 V input, and drives one external low-side N-channel MOSFET via an adjustable internal gate driver supply (VGG). Its primary system role is to generate a stable, regulated high-voltage rail for the ASLx415SHN multi-channel LED buck driver in headlight modules.
For engineers reviewing the ASL1500SHNY datasheet, ASL1500SHNY pinout, ASL1500SHNY application in automotive LED drivers, or ASL1500SHNY equivalent for boost controller replacement, this page provides verified technical context, SPI-configurable parameters, thermal and fault diagnostics, HVQFN32 package layout, and automotive-grade reliability data - all confirmed against NXP's Rev. 4 product data sheet (2017).
Technical Context
The ASL1500SHNY implements fixed-frequency peak current-mode control with parabolic/non-linear slope compensation that tracks switching frequency and output voltage. Its digital control logic uses SPI-programmable registers to configure output voltage (0–90 V), overvoltage limit, coil peak current threshold, gate driver voltage (4.46–10.04 V), and clock division (1× to 256×) for precise EMC tuning.
It supports fail-silent operation upon thermal shutdown (>175 °C), input UV/OV detection, or VGG error, maintaining SPI communication while halting gate switching. The device maps virtual phases to physical G1 output via register-controlled phase enable, delay, and off-time settings - enabling flexible timing alignment without hardware changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5 V to 40 V - supports full automotive battery range including cold-crank (6 V) and load-dump (40 V) transients. |
| Output Voltage Range | Programmable 0–90 V via SPI (0x03h), with 3 % accuracy - enables dynamic adjustment for varying LED string counts and forward voltages. |
| Switching Frequency | Fixed base oscillator, programmable down to 1/256× via clock divider (0x09h) - allows EMI optimization across 100 kHz–2 MHz range. |
| Junction Temperature Limit | Thermal shutdown at +175 °C - ensures safe operation under sustained high-power LED driving conditions. |
| Ambient Operating Range | −40 °C to +125 °C - meets automotive Grade 1 requirements for under-hood and headlamp module placement. |
| Quiescent Current | <5 µA at 25 °C when EN = 0 - minimizes battery drain during vehicle sleep mode. |
| AEC-Q100 Qualification | Grade 1 qualified - validated for automotive safety-critical lighting applications per stress test requirements. |
Pinout & Package
Housed in a 5 mm × 5 mm × 0.85 mm HVQFN32 package (SOT617-12) with exposed thermal pad soldered to PCB ground for enhanced thermal dissipation in high-power LED driver designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SNL1 / SNH1 (Pins 1, 2) | Current sense differential inputs | Monitor MOSFET source current for peak-current-mode regulation and coil saturation protection. |
| G1 (Pin 4) | Gate driver output | Drives external low-side N-channel MOSFET; supports both logic-level (≤5 V) and standard-level (≥10 V) FETs. |
| VGG (Pin 5) | Internally regulated gate driver supply | Adjustable 4.46–10.04 V output (0x15h); powers G1 stage with programmable voltage for optimal FET RDS(on) and switching loss trade-off. |
| FB1 (Pin 11) | Output voltage feedback input | Connects to resistive divider from boost output; enables closed-loop regulation with configurable loop compensation (0x11h/0x12h). |
| VBAT (Pin 13) | Battery supply input | Primary power input; monitored continuously for UV/OV detection (0x1Bh/0x1Ch) and Fail Silent entry. |
| EN (Pin 29) | Enable control input | Active-high logic signal; initiates power-on sequence and transitions device from Off → Configuration → Operation mode. |
| SDI/SCLK/CSB/SDO (Pins 26–28, 31) | SPI interface signals | Full-duplex 4-wire SPI for configuration, real-time diagnostics (junction temp, VBAT, VGG status), and read-back of programmed values. |
| GND (Pins 3, 7, 32 + thermal pad) | Ground reference and thermal path | Multiple ground pins and exposed pad must be connected to PCB ground plane for low-impedance return and thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable output voltage with 3 % accuracy | Enables precise LED string biasing across temperature and aging; eliminates need for external DAC or trimming resistors. |
| Integrated gate driver voltage regulator (VGG) | Configurable 4.46–10.04 V output optimizes MOSFET turn-on speed and conduction loss without external LDO. |
| Real-time junction temperature monitoring | Read-back via SPI (0x44h) provides direct thermal feedback for adaptive dimming or derating in high-ambient environments. |
| Fail-silent fault response | Halts G1 switching while preserving SPI access during UV/OV, overtemperature, or VGG faults - supports diagnostic logging and controlled recovery. |
| EMI-optimized slope compensation | Parabolic compensation tracks frequency and output voltage to suppress subharmonic oscillation and reduce conducted emissions. |
| Coil peak current limiting | Configurable via 0x07h register to prevent magnetic saturation and enable soft-start behavior without external circuitry. |
Applications
| Daytime Running Lights (DRL) | Low Beam Headlights |
|---|---|
|
Use Scenario: Continuous 24/7 operation at partial brightness with strict thermal and efficiency constraints. IC Role / Device Role / Timing Role: Boost controller supplying regulated 48–60 V to ASLx415SHN buck driver for constant-current LED strings. Use Value: Programmable output voltage and thermal monitoring allow dynamic derating to maintain lumen output within thermal envelope over ambient range −40 °C to +125 °C. |
Use Scenario: High-brightness, thermally demanding illumination requiring robust overvoltage protection during load dump. IC Role / Device Role / Timing Role: Primary high-voltage rail generator with fast UV/OV fault response (<10 µs) to protect downstream buck driver and LEDs. Use Value: Fail-silent mode preserves SPI communication during fault events, enabling real-time diagnostics and safe restart without microcontroller reset. |
| High Beam Headlights | Cornering Lights |
|
Use Scenario: Burst-mode operation with rapid on/off cycling and high peak current demands. IC Role / Device Role / Timing Role: Boost stage delivering up to 80 V with programmable coil current limit (0x07h) to manage inrush and prevent saturation. Use Value: Adjustable phase-off time (0x0Dh) and slope compensation (0x13h) stabilize regulation during transient load steps, minimizing output ripple. |
Use Scenario: Asymmetric illumination requiring independent voltage scaling for inner/outer LED zones. IC Role / Device Role / Timing Role: Configurable boost output supporting dual-string buck drivers with different forward voltage requirements. Use Value: SPI-based voltage reprogramming enables zone-specific dimming profiles without hardware change - critical for adaptive driving beam systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4312-AEC1 | Fixed 400 kHz frequency; no programmable VGG or slope compensation; analog PWM dimming interface only. | Lacks SPI diagnostics and thermal monitoring; limited to simpler DRL/park light systems without adaptive control. | Choose when cost-sensitive, non-adaptive LED lighting is sufficient and diagnostic depth is not required. |
| TPS40210-Q1 | External COMP pin for loop compensation; no integrated VGG regulator; requires external gate driver for high-side FETs. | Designed for high-side boost topologies; lacks native support for ASLx415SHN interface and failsilent diagnostics. | Prefer for custom high-side configurations where full analog loop tuning is needed and SPI diagnostics are secondary. |
Compared with MPQ4312-AEC1 and TPS40210-Q1, the ASL1500SHNY uniquely integrates SPI-configurable VGG, real-time junction temperature readback, fail-silent fault handling, and parabolic slope compensation - making it the only option qualified for AEC-Q100 Grade 1 adaptive headlight systems requiring closed-loop thermal and voltage management.
Availability
ASL1500SHNY is available at Aetrix Electronics and suitable for automotive LED lighting, headlamp control modules, and adaptive driving beam systems requiring stable component supply across extended temperature and lifetime requirements.
Supply support for ASL1500SHNY 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 ASL1500SHNY belongs to NXP's Automotive LED Driver Power Management family, engineered specifically to deliver high-efficiency, diagnostics-rich, AEC-Q100-compliant boost conversion for next-generation adaptive front-lighting systems (AFS).
FAQ
What is the maximum output voltage supported by the ASL1500SHNY?
The ASL1500SHNY supports a maximum programmable output voltage of 90 V via its SPI interface (register 0x03h), though the typical operational limit is 80 V as specified for use with the ASLx415SHN LED buck driver. The 90 V ceiling provides design margin for transient conditions and future LED string configurations. Output voltage accuracy is ±3 % across temperature and line variations.
Does the ASL1500SHNY support both logic-level and standard-level MOSFETs?
Yes, the ASL1500SHNY supports both logic-level and standard-level N-channel MOSFETs through its programmable internal gate driver supply (VGG), adjustable from 4.46 V to 10.04 V (register 0x15h). This flexibility allows optimal selection of external FETs based on RDS(on), switching speed, and thermal performance without requiring external level-shifting circuitry.
How does the ASL1500SHNY handle overvoltage conditions on its output?
The ASL1500SHNY halts gate switching immediately when the output voltage exceeds the programmable overvoltage threshold (set via register 0x05h), preventing damage to downstream components like the ASLx415SHN buck driver or LED strings. Once the output recovers below the threshold, regulation resumes automatically - a feature critical for automotive load-dump resilience.
Is thermal shutdown protection implemented in the ASL1500SHNY?
Yes, the ASL1500SHNY includes thermal shutdown protection that activates when the junction temperature exceeds +175 °C. Upon triggering, the device enters Fail Silent mode: gate output stops, but SPI communication remains active to report the fault condition. This enables diagnostic logging and safe system recovery without requiring microcontroller reset.
Can the ASL1500SHNY be used outside automotive applications?
While the ASL1500SHNY is AEC-Q100 Grade 1 qualified and optimized for automotive LED lighting, its wide input range (5.5–40 V), programmable output (0–90 V), and robust diagnostics make it viable for industrial LED drivers, medical lighting, or high-reliability DC-DC boost stages - provided ambient temperature and qualification requirements align with its −40 °C to +125 °C operating range and HVQFN32 thermal profile.
ASL1500SHNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Boost
- Internal Switch(s):
- -
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 5.5V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 80V
- Current - Output / Channel:
- -
- Frequency:
- 120kHz ~ 700kHz
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-HVQFN (5x5)
ASL1500SHNY FAQ
1.How can I place an order for ASL1500SHNY through Aetrix?
Please submit a Request for Quotation (RFQ) for ASL1500SHNY 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 ASL1500SHNY reliable?
The price and inventory of ASL1500SHNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASL1500SHNY is usually 5 days.
3.What payment methods are accepted for ASL1500SHNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASL1500SHNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASL1500SHNY?
ASL1500SHNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASL1500SHNY 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 ASL1500SHNY?
For technical support, including ASL1500SHNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASL1500SHNY requirements.
6.How does Aetrix verify that ASL1500SHNY is sourced from the original manufacturer or authorized distributors?
All ASL1500SHNY 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 ASL1500SHNY meets industry standards.
7.What is the process for return or replacement of ASL1500SHNY?
All ASL1500SHNY units undergo pre-shipment inspection (PSI). If there is an issue with ASL1500SHNY, 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 ASL1500SHNY part is unused and in its original packaging.
Return procedure for ASL1500SHNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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