REF_ILD8150_DC_1.5A
Reference board ILD8150 80V high-side buck LED driver IC with hybrid dimming
This reference design board features ILD8150E, a 80V LED driver IC with an innovative hybrid dimming method. For applications operating close to safety extra low voltage (SELV) limits it provides a high safety voltage margin. The buck LED driver IC is tailored for LEDs in general lighting applications with average currents up to 1.5A using a high-side integrated switch. Several performance and protection features provide the right fit for professional LED lighting.
The reference design ILD8150 provides flexibility to be used up to 1.5A with a short duty cycle. The hysteretic current control is extremely fast and always stable without the need for any loop compensation. It is suitable for applications with a wide range of supply voltages from 8 to 80V, which gives a clear advantage and flexibility comparing to existing 60V solutions.
ILD8150E operates in hybrid dimming mode that helps to minimize LED color shift and audible noise. In range of 12.5 to 100 percent it operates in analog dimming mode, in 0.5 to 12.5 percent in PWM mode with fixed output frequency.
ILD8150 provides high accuracy over all conditions, as well as AC 100 or 120Hz input flicker rejection in the whole dimming range.
Summary of Features
- Wide input voltage range from 8 to 80V
- Capable to provide output current up to 1.5A
- Digital soft-start
- PWM dimming input up to 20kHz
- Hybrid output dimming
- Typical ±3% output current accuracy
- Very low LED current drift over temperature
- Undervoltage lockout
- Cycle by cycle current limit
- PG-DSO-8 package with and without exposed pad
- Overtemperature protection
Benefits
- High safety voltage margin in SELV applications
- Maximum duty cycle up to 99% allows to use it in applications where input and output voltage are close to each other
- No external MOSFET needed
- Helps to minimize color shift and audible noise
- Deep dimming and flicker-free light
- Current always under control
Potential Applications
Modular lighting boards
At Infineon we offer a broad variety of primary side ACDC and secondary side DCDC boards dedicated to LED lighting. The LED lighting boards can easily be stacked together for plug-and-play solutions.
