HV825DB1 - Uncategorized Microchip - Free user manual and instructions
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| Product Type | Demonstration Board |
| Brand | Microchip |
| Model | HV825DB1 |
| Application | Electroluminescent (EL) Lamp Driver |
| Number of Channels | 8 |
| Input Voltage Range | 2.7V to 5.5V DC |
| Output Voltage | Up to 180V AC |
| Output Frequency | 50Hz to 1kHz (adjustable) |
| Control Interface | Digital On/Off, PWM Input |
| On-Board Indicators | Power LED |
| Dimensions | 50 mm x 50 mm (approx.) |
| Weight | 20 g (approx.) |
| Operating Temperature Range | -40°C to +85°C |
| Protection Features | Short Circuit Protection |
| Power Consumption | Low Quiescent Current |
| Connectors | Screw Terminals for EL Lamps and Power |
| Jumper Settings | Channel Selection and Frequency Selection |
| Included Components | HV825 IC, PC Board, Connectors |
| Documentation | User Manual Available (PDF) |
| Compliance | RoHS Compliant |
Frequently Asked Questions - HV825DB1 Microchip
What is the HV825DB1?
The HV825DB1 is an evaluation board from Microchip designed for testing and prototyping electroluminescent (EL) lamp drivers based on the HV825 IC. It provides a convenient platform to evaluate the chip's performance and features.
How does the HV825DB1 work?
The board uses the HV825 IC, which converts a low DC input voltage (2.7V to 5.5V) into a high AC voltage (up to 180V) to drive EL lamps. It includes an internal oscillator and can be controlled via digital signals or PWM for brightness adjustment.
What is an electroluminescent lamp?
An electroluminescent (EL) lamp is a light source that emits light when a high-voltage AC signal is applied across it. It is commonly used for backlighting keypads, displays, and decorative lighting due to its thin form factor and low power consumption.
How do I connect power to the HV825DB1?
Connect a power supply of 2.7V to 5.5V DC to the board's power input terminals, respecting the polarity. Ensure the supply can deliver sufficient current (typically up to 500mA) for your EL lamp configuration. Refer to the user manual for exact pinout details.
How do I adjust the output brightness?
Brightness can be controlled by applying a PWM signal to the control input. Adjust the duty cycle or frequency to vary the effective voltage and thus the lamp brightness. The board also has jumpers to select different fixed frequency settings.
Can I use the HV825DB1 with a microcontroller?
Yes, the board's control input is logic-compatible with 3.3V and 5V microcontrollers. You can use a GPIO pin to switch the lamp on/off or a PWM pin to dim the lamp. No additional level shifting is normally required.
What is the output voltage range?
The HV825DB1 can generate an output AC voltage of up to 180V peak. The exact voltage depends on the input supply voltage and the EL lamp capacitance. Operating frequency is typically in the range of 50Hz to 1kHz.
How many EL lamps can I connect?
The board supports up to 8 independent EL lamps corresponding to the 8 channels of the HV825 IC. Each channel can drive a lamp with a capacitance of up to a few nanofarads. Ensure the total capacitance stays within the IC's rated limits.
What is the maximum operating temperature?
The board and its components are designed for operation over an industrial temperature range of -40°C to +85°C. Exceeding this range may degrade performance or cause permanent damage.
Where can I find the full user manual for the HV825DB1?
The full user manual is available for free download from the notice-facile.com website or the Microchip official website. It includes detailed circuit diagrams, connection instructions, and technical specifications.
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USER MANUAL HV825DB1 Microchip
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Product information
Brand : Microchip
Model : HV825DB1
Category : Uncategorized