R2A20132SP#W0 Renesas

Data Sheet R2A20111SP R03DS0092EJ0401 Rev.4.01 Power Factor Correction Controller IC Jan 08, 2016 Description The R2A20111 is a power-factor correction (PFC) controller IC. This IC adopts continuous conduction mode as PFC operation. Various functions such as constant power limit, overvoltage detection, overcurrent detection, soft start, feedback-loop disconnection detection, and holding function of PFC operation through momentary outage (PFC hold function) are incorporated in a single chip. These functions reduce external circuitry. The constant power limit function allows to eliminate a significant amount of coil noise which is generated due to overcurrent detection operation in case of conventional overload. The PFC hold function enables quick recovery by continuing PFC operation after momentary outage. The hold time can be adjusted by an external capacitance. Overcurrent detection pin is separately provided. Latch mode shutdown function is incorporated. A soft-start control pin provides for the easy adjustment of soft-start operation, and can be used to prevent overshooting of the output voltage. Features Maximum ratings Power-supply voltage Vcc: 24 V Junction temperature Tj: 40 to 125C Electrical characteristics VREF output voltage VREF: 5.0 V 3% UVLO operation start voltage VH: 10.5 0.9 V UVLO operation stop voltage VL: 9.0 0.7 V PFC output maximum ON duty Dmax-out: 95% (typ.) Functions Constant power limit function Continuous conduction mode Hold function of PFC operation on momentary outage (PFC hold function) Overvoltage detection Overcurrent detection Soft start Feedback loop disconnection detection IC shutdown function Package lineup: SOP-16 Applications Flat panel display Projector Desktop PC White goods Ordering Information Part No. Package Name Package Code Taping Spec. R2A20111SPW0 FP-16DAV PRSP0016DH-B 2000 pcs./one taping product R03DS0092EJ0401 Rev.4.01 Page 1 of 7 Jan 08, 2016 R2A20111SP System Diagram 150 H Rec+ B+ B+ OUT 680k T1 (385V dc) 680k To FB Q1 470F from 2 auxiliary VRB1 (450V) Rec From OUT GND 24V 4.7 VCC 16 VREF 5V Internal Bias RT 62k 3.6V 9 10.5V VREF 5V VREF 0.65V H 27.5V 6 Generator UVLO 0.1 L 9.0V In VREF GOOD Out CT 10 390p UVL VREF CAO To Gate Driver 6800p 2.2k +/ 1.0A (PEAK) Q1 gate Logic 7 1 470p OUT VREF IAC C 82k AMP SS 12 1.28M Multiplier 1000p CAI 5 2.4k VREF 22k 100 CLIMIT CLIMIT 10k 8 1.3V 0.0165 100p (5W) 4 CGND 2.4k EO 820k 14 VREF 2.5V VREF 2.688V 0.033 V AMP 2.638V 0.47 15 FB SS B+OVP 13 25A From VRB1(B+ monitor1) GND 720k 2 0.52V AC-Det PFC-ON 11 Circuit Ground 14k 1 0.1 0.82V DELAY 0.79V 3 0.22 R03DS0092EJ0401 Rev.4.01 Page 2 of 7 Jan 08, 2016