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ON Semiconductor NCV887300LEDGEVB User Manual

ON Semiconductor NCV887300LEDGEVB User Manual

Automotive grade high-frequency dimmable led boost controller

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NCV887300LEDGEVB
NCV887300 Automotive
Grade High‐frequency
Dimmable LED Boost
Controller Evaluation
Board User's Manual
Description
This NCV887300 evaluation board provides a convenient
way to evaluate a high-frequency LED Boost converter
design. No additional components are required, other than
dc supplies for the input and enable voltages. An external
clock can be used to synchronize the switching frequency. It
is configured as a 60 mA output current source with a 1 MHz
switching frequency over the typical 6 V to 18 V automotive
input voltage range. On board overvoltage protection is
provided. The design is 1000:1 dimming ratio capable. The
dimming frequency interface circuit may be configured to
accept an 1.8 V or a 3.3 V/5 V control signal.
 Semiconductor Components Industries, LLC, 2013
May, 2013 − Rev. 2
Key Features
Figure 1. NCV887300 LED Evaluation Board
1
http://onsemi.com
EVAL BOARD USER'S MANUAL
60 mA Output Current Source
1000:1 Dimming Ratio
Overvoltage Protection
1 MHz Switching Frequency
Input Undervoltage Lockout
Internal Soft-Start
Wide Input Voltage of 6 V to 18 V
Regulates through Load Dump Conditions
External Clock Synchronization up to 1.1 MHz
Automotive Grade
Publication Order Number:
EVBUM2181/D

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Summary of Contents for ON Semiconductor NCV887300LEDGEVB

  • Page 1 NCV887300LEDGEVB NCV887300 Automotive Grade High‐frequency Dimmable LED Boost Controller Evaluation http://onsemi.com Board User's Manual EVAL BOARD USER’S MANUAL Description Key Features This NCV887300 evaluation board provides a convenient  60 mA Output Current Source way to evaluate a high-frequency LED Boost converter ...
  • Page 2: Current Limit

    NCV887300LEDGEVB Table 1. EVALUATION BOARD TERMINALS Terminal Function Positive DC Input Voltage Common DC Return VOUT Regulated DC Output Voltage EN/SYNC Enable and Synchronization Input Table 2. ABSOLUTE MAXIMUM RATINGS (Voltages are with respect to GND) Rating Value Unit DC Supply Voltage (VIN) −0.3 to 40...
  • Page 3: Operational Guidelines

    NCV887300LEDGEVB Operational Guidelines 1. Connect a DC input voltage, within the 6 V to 5. Optionally: 40 V range, between VIN and GND.  for external clock synchronization, connect a 2. Connect a DC enable voltage, within the 2.0 V to pulse source between EN/SYNC and GND.
  • Page 4 NCV887300LEDGEVB TYPICAL PERFORMANCE − START-UP VOUT VOUT Figure 3. Typical Start-up with V = 6 V, Figure 4. Typical Start-up with V = 12 V, 10 LEDs/60 mA 10 LEDs/60 mA GDRV VOUT Figure 5. Typical Start-up with V = 18 V, Figure 6.
  • Page 5 NCV887300LEDGEVB SCHEMATIC Figure 8. NCV887300 Boost LED Evaluation Board Schematic (Applicable to PCB Rev 1.0 dated 08/11/2011) Figure 9. NCV887300 Boost LED Evaluation Board Schematic (Applicable to PCB Rev 1.0 dated 02/27/2013) http://onsemi.com...
  • Page 6: Pcb Layout

    NCV887300LEDGEVB PCB LAYOUT Figure 10. Top View Figure 11. Bottom View http://onsemi.com...
  • Page 7 NCV887300LEDGEVB Table 4. BILL OF MATERIALS Reference Manufacturer’s Quantity Description Value Tolerance Manufacturer Designator(s) Part Number OPEN Do Not Populate CAP CER 1000 pF 50 V 1000 pF, Murata Electronics GCM188R71H102KA37D X7R 0603 50 V North America CAP CER 4.7 pF 50 V 4.7 pF, 50 V...
  • Page 8 PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: N. American Technical Support: 800−282−9855 Toll Free ON Semiconductor Website: www.onsemi.com Literature Distribution Center for ON Semiconductor USA/Canada Order Literature: http://www.onsemi.com/orderlit P.O. Box 5163, Denver, Colorado 80217 USA Europe, Middle East and Africa Technical Support: Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada...
  • Page 9 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: ON Semiconductor NCV8873LEDBSTGEVB...