Infineon - XDPL8218 - High power factor constant voltage flyback IC with secondary-side regulation for cost-effective LED driver

Infineon – XDPL8218 – High power factor constant voltage flyback IC with secondary-side regulation for cost-effective LED driver

The XDPL8218 is a digital, highly integrated, future-proof device. It combines a constant voltage quasi-resonant flyback controller with algorithms for high power factor and low THD. Main application field for XDPL8218 is for dual stage designs with a DC-DC stage at secondary side and XDPL8218 as primary side. The device manages wide load ranges and reacts fast and stable to dynamic load changes. The digital core of the XDPL8218 enables high efficiency over wide output power range. The multi-mode operation with quasi-resonant switching at high power, discontinuous conduction mode for frequency reduction at medium power and active burst mode at low power enables this.

Features

Programmable constant voltage output with secondary-side regulation
Supports AC and DC input
Nominal input voltage range 100 VAC – 277 VAC or 127 VDC – 430 VDC
Reference board efficiency > 90%
Power factor > 0.9 and THD < 15% over wide load range
Standby power < 100 mW
Temperature guard with adaptive thermal management with on-chip sensor
Digital control selects automatically best mode of operation, depending on actual requirements
QRM (Quasi-resonant mode)
DCM (Discontinuous conduction mode)
ABM (Active burst mode)
Tunable, digital parameters
Configurable brown-out and brown-in protections
Embedded digital filters
Relevant error conditions are monitored and protected (Undervoltage / Overvoltage / Open load / Output shorted)

Benefits

Enables the design of high performance and innovative value LED driver with small effort
Reduced BoM minimizes system cost and increases flexibility
High reliability features improve lifetime of the driver
Fast design cycles reduce time to market and efforts for value prod-ucts
Supply chain efficiency optimizes stock keeping and enables high flexibility

Target applications