DESCRIPTION

· The R2A20104/114 series is a boost converter control IC with Power Factor Correction (PFC).

· It operates in continuous conduction mode interleaving PFC for higher efficiency and lower switching noise, suitable for high power applications.

· Current detection in power MOSFET is used for continuous conduction mode control.

· Supports two current detection methods: via current transformers (R2A20104SP/FP) and shunt resistors (R2A20114SP/FP).

· Interleaving control provides a 180-degree phase shift between output signals, enhancing conversion efficiency and reducing ripple currents.

· Includes various protection circuits to improve system reliability and reduce component count.

FEATURES

· Maximum Ratings: Supply voltage Vcc up to 24 V, Junction temperature Tj from -40 to +150°C.

· Electrical Characteristics: Feedback voltage VREF 2.5 V ±1.5%, UVLO operation start voltage VH 10.4 V ±0.7 V, shutdown voltage VL 8.9 V ±0.5 V, hysteresis voltage Hysuvl 1.5 V ±0.5 V.

· Functions: Boost converter control, interleaving control, frequency modulation, brownout, phase drop, external clock synchronization, over voltage protections, feedback loop wire breaking detector, current balance control, independent over current protection for Phase 1 and Phase 2.

· Package Options: Pb-free LQFP-40 and SOP-20.

APPLICATIONS

· Suitable for high efficiency power supply systems requiring low switching noise and high reliability.

· Ideal for applications needing continuous conduction mode interleaving PFC control.

· Can be used in systems where current detection via transformers or shunt resistors is preferred.

· Applicable in scenarios demanding reduced ripple currents and smaller component sizes like boost inductors, input filters, and output capacitors.

· Useful in power systems that benefit from integrated protection circuits to enhance safety and reduce part count.