DESCRIPTION

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

· Employs continuous conduction mode interleaving PFC for higher efficiency and lower switching noise.

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

· Interleaving control provides 180-degree phase shift between output signals (GD1,2), reducing ripple currents and enabling smaller components.

· Integrates various protection circuits to enhance system reliability and reduce component count.

FEATURES

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

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

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

· Package Options: Pb-free LQFP-40 (R2A20104FP, R2A20114FP), Pb-free SOP-20 (R2A20104SP, R2A20114SP).

APPLICATIONS

· Suitable for high power applications requiring efficient power factor correction.

· Ideal for systems needing reduced switching noise and ripple currents.

· Applicable in designs where smaller boost inductors, input filters, and output capacitors are desired.

· Useful in power supply systems requiring enhanced reliability and reduced component count.