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Microchip HV9910BDB3, Supertex LED Driver Evaluation Board for HV9910
Application Notes Download All. In Production View Datasheet Features: It includes an 8. Only show products with samples.
Can you show a photo of your circuit? Please contact sales office if device weight is not available.
problem with HV9910 led driver: pls help me
It could also be the current rating on the inductor. The circuit is very simple.
The HVB requires only three external components apart from the power stage to produce a controlled LED current making it an ideal solution for low cost LED drivers. IoT – Internet of Things. Also, double check your connections.
To participate you need to register. The diode connected to the mosfet and inductor should be fast.
I don’t know why. The HVBDB3 can be configured to operate in either a constant frequency mode for driving a single LED or in a constant off-time mode for driving two PWM dimming response is limited only by the rate of rise and fall of the inductor current, enabling very fast rise and fall times.
The most obvious problems will be due to incorrect wiring and defective or missing parts. You must log in or register to reply here.
Generic 5P HVB HV Supertex LED driver SOP-8PIN NEW: : Car & Motorbike
Since the HVB operates in open loop current mode control, the controller achieves good output current regulation without the need for ler loop compensation. It also includes a 0 – mV linear dimming input which can be used for linear les of the LED current. My quess is that the circuit boosts the Vin above the maximum limit the IC can handle. Forums New posts Search forums. The board features a low component count and long life operation due to the absence Click here to register now.
What is connected to the LED connection.
Thread starter aminbehravan Start date Jul 9, Media New media New comments Search media. I can easily be wrong also. Buy from the Microchip Store.
HVB – Display and LED Drivers – General Purpose LED Drivers – Display and LED Drivers
Analog Simulation – HVB. You have no bulk capacitor; see section “Input Bulk Capacitor” in the datasheet for details. Sampling Options Buy Now.