Matrix LED Headlight

This reference design provides design guide, data and other contents of LED Matrix Headlight. It controls the lighting of multiple LEDs independently according to the situation.

Photo of Matrix LED Headlight

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  • Matrix LED Headlight with independent light control
  • Small Implementation Area
  • Total solution using MOSFETs, Gate drivers, Rectifer diodes and Zener diodes


Input voltage DC 12 V
Number of LEDs 42 (6 LEDs x 7 blocks, 6 blocks of white and 1 block of amber color)
Power output for LEDs Constant current 500 mA x 7 blocks, dimming control is possible for each block
Power output for MCU DC 5 V (1 A Max)

Design Documents

Design Documents contain the documents below.

Design Data

Design Data contains the contents listed below.

*1:Actual PCB was designed on CR5000BD. The other files were made from CR5000BD file.

*2:The data was generated on CR5000BD.

Used Toshiba Items

Part Number Device Category Portion Usage Description
Power MOSFET (N-ch single 30V<VDSS≤60V) Load switch circuit, Reverse connection protection circuit・2 N-ch MOSFET, 40 V, 40 A, 0.0038 Ω@10V, TSON Advance(WF)
Intelligent power device (High side power-MOSFET driver with built-in charge pump) High-side power MOSFET driver・1 Automotive Gate driver for High-side switch, PS-8
Super fast-recovery diode Boost power supply circuit・7 600 V/1.0 A Rectifier Diode, M-FLAT
Zener diode Boost power supply circuit・7 6.8 V Zener Diode, SOD-323(USC)
Small Low ON resistance MOSFETs LED dimming control circuit・7 N-ch MOSFET, 60 V, 6.0 A, 0.036 Ω@10V, TSOP6F
Automobile CPU regulator, built-in watchdog timer CPU power supply circuit・1
Power transistor for high-speed switching applications CPU power supply circuit・1 PNP Bipolar Transistor, -50 V, -5 A, New PW-Mold
Small-signal MOSFET LED lighting control circuit・42 P-ch MOSFET, -40 V, -7 A, 0.035 Ω@10V, TSOP6F
Bias resistor built-in transistor (BRT), 2-in-1 LED lighting control circuit・21 NPN x 2 Bias Resistor Built-in Transistors (BRT), 10 kΩ/47 kΩ, SOT-563(ES6)

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