R2A20111DD RENESAS [Renesas Technology Corp], R2A20111DD Datasheet

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R2A20111SP/DD Power Factor Correction Controller IC 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 ...

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... R2A20111SP/DD Ordering Information Part No. Package Name R2A20111SPW0 FP-16DAV R2A20111DDU0 DP-16FV System Diagram 150 H Rec Rec– From OUT VREF RT 62k 390p CAO VREF 6800p 2.2k 7 470p Imo = K IAC 82k IAC 12 1.28M 1000p K CAI 5 2.4k VREF 22k 100 CLIMIT 10k 8 0.0165 100p ...

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R2A20111SP/DD Pin Arrangement Pin Description Pin No. Pin Name I/O 1 OUT Output 2 GND — 3 DELAY Input/Output 4 CGND Input 5 CAI Input/Output 6 VREF Output 7 CAO Output 8 CLIMIT Input 9 RT Input/Output 10 CT Output ...

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R2A20111SP/DD (1) Setting the PFC function hold time for momentary outage When the PFC-ON pin is driven below 0.79 V (typ.) due to a momentary outage, the delay pin functions as source current. PFC operation continues until the capacitor is ...

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R2A20111SP/DD EO Pin: This pin is the output of the voltage amplifier. This pin is connected to the phase-compensation circuit of the voltage amplifier. SS Pin: This pin is connected to GND or VREF via a capacitor. This pin is ...

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R2A20111SP/DD Absolute Maximum Ratings Item Supply voltage VCC OUT peak current Ipk-out OUT DC current Idc-out Terminal voltage Vi-group1 Vi-group2 CAO voltage Vcao EO voltage Veo DELAY voltage Vdelay CAI voltage Vi-cs RT current Irt IAC current Iiac VREF current ...

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R2A20111SP/DD Electrical Characteristics Item Supply Start threshold Shutdown threshold UVLO hysteresis Startup current Is temperature stability Operating current VREF Output voltage Line regulation Load regulation Temperature stability Oscillator Initial accuracy fout temperature stability fout voltage stability CT peak voltage Ramp ...

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R2A20111SP/DD Electrical Characteristics (cont.) Item C Input offset voltage AMP Open loop gain High voltage Low voltage Source current Sink current Transconductance IAC/ IAC pin voltage Multiplier Imo current 1 Imo current 2 Imo current 3 Imo current 4 OUT ...

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R2A20111SP/DD Electrical Characteristics (cont.) Item Supervisor PFC enable voltage PFC disable voltage PFC disable delay threshold voltage Input current B+ OVP set voltage B+ OVP reset voltage FB low set voltage DELAY source current DELAY sink current 1. dVovps = ...

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R2A20111SP/DD Timing Chart 1. Startup and Stop Timing VCC 10.5V (VH) 5V 4.0V VREF VREF GOOD (Internal signal) PFC-ON 0.82V (Von-pfc) PFC-OFF (Internal signal) SS CAO Soft start CAO CT OUT FB REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page 10 of ...

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R2A20111SP/DD 2. Stop Timing by PFC-ON Pin PFC-ON DELAY PFC-OFF ( Internal signal ) SS OUT FB REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page 0.79V (Voff-pfc) td-pfcoff PFC hold time Normal control 1.2V(Vd-pfc) ...

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R2A20111SP/DD 3. Oscillator, Gate Drive Output CT CAO Dead Time (Internal signal) OUT ( ) Leading edge control 4. PFC Operation On/Off PFC-ON PFC-OFF ( Internal signal ) DELAY OUT REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page 0.82V(Von-pfc) ...

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R2A20111SP/ Supervisor FB B+OVP ( Internal signal ) FB LOW ( Internal signal ) SS OUT REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page Vovps Vovpr 0.52V(FB LOW) ...

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R2A20111SP/DD Description of Functions 1. UVL Circuit The UVL circuit monitors the Vcc voltage. When the voltage is lower than 9.0 V, the IC is stopped. When the voltage is higher than 10.5 V, the IC is started. When operation ...

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R2A20111SP/DD 2. Operating Frequency The R2A20111 operating frequency fosc is determined by adjusting the timing resistor Rt (the RT pin, pin 9) and the timing capacitance Ct (the CT pin, pin 10). The operating frequency is approximated by the following ...

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R2A20111SP/DD 3. Soft Start This function gradually increases the pulse width of the OUT pin from a 0% duty cycle at the startup. By preventing a sudden increase of the pulse width, potential problems such as transient stress on the ...

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R2A20111SP/DD 4. PFC-ON Pin Function The PFC-ON pin is applied smoothing voltage of rectified AC voltage. Accordingly, the AC voltage state is detected and each function depending on the power-supply state is operated. Details of their operation are given below. ...

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R2A20111SP/DD 4-2. Multiplier Gain Switching Multiplier gain is switched according to the input AC voltage. 4-3. Operation on a Momentary Outage (PFC operation hold on momentary outage: PFC hold function) (1) When the Momentary Outage is Short During a momentary ...

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R2A20111SP/DD (2) When the Momentary Outage is Long When the momentary outage is long enough that the DELAY pin voltage reaches 1.2 V, OUT is stopped and SS is reset, then PFC operation is stopped. The current on the PFC-ON ...

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R2A20111SP/ Pin Function The FB pin is a feedback input for the PFC output voltage. This pin is applied to voltage divided PFC output with resistors. The PFC output voltage is controlled so that the voltage on FB ...

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R2A20111SP/DD 5-1. Power-Supply Startup Operation When the AC voltage is applied, the PFC-ON pin voltage starts to rise up. After it has reached 0.82 V, the voltage on the SS pin starts to be discharged and PFC operation is started ...

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R2A20111SP/DD 5-3. Overvoltage Operation When the PFC output voltage is larger than 7.5% of the prescribed voltage due to an abnormality in the system or a sudden change of AC voltage or load, operation of the OUT pin is stopped. ...

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R2A20111SP/ Shutdown Function When the DELAY pin is pulled the IC shutdown function operates. During shutdown, the IC enters the standby state. To reset the circuit from the shutdown state, the voltage on VCC ...

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R2A20111SP/DD Main Characteristics Standby Current vs. Power Supply Voltage Characteristics 250 Ta = 25°C 200 150 100 Power Dissipation vs. Power Supply Voltage Characteristics 25°C 7 1000pF 7 6.5 6 ...

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R2A20111SP/DD 5.2 Vcc = 12V 5.15 Iref = –1mA 5.1 5.05 5 4.95 4.9 4.85 4.8 –40 –20 75 Vcc = 12V 73 RT= 27k CT = 1000pF –40 –20 REJ03F0231-0100 ...

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R2A20111SP/DD 11.5 11.3 11.1 10.9 10.7 10.5 10.3 10.1 9.9 9.7 9.5 –40 –20 9.6 9.4 9.2 9 8.8 8.6 8.4 –40 –20 REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page Start-up Voltage Temperature Characteristics ...

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R2A20111SP/DD 280 Vcc = 9.5V 260 240 220 200 180 160 140 120 –40 –20 7 Vcc = 12V 6 0pF 6 5.5 5 4.5 4 3.5 3 –40 –20 REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page 27 of ...

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R2A20111SP/DD 250 Ta = 25°C Vcc = 12V Veo = Veoh RT = 27k 200 PFC-ON = 0.5V PFC- 150 100 100 REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page CAI Pin Current vs. ...

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R2A20111SP/DD Precautions on Usage Figure 13 shows symbols which are used in this chapter. L Vout Rcs Isum Rmo CGND Rmo Figure 13 Template Illustrating Symbols of External Circuit Elements REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page Vout ...

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R2A20111SP/DD 1. Power Limit Function 1-1. Limited Power Value When the load exceeds the rated load, the power is limited by the set power value and the IC enters the constant power control state. This indicates that the power is ...

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R2A20111SP/DD 1-5. Relations between RT Resistor and Power Limit The maximum current on the CAI pin is expressed in inverse proportion to the resistance of the RT pin as 4.7/RT. Since Imo is proportional to the input AC current, when ...

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R2A20111SP/DD 1-6. Tolerance of Limited Power Values The tolerance of the limited power values depend on the tolerance of the CAI pin current. Since overcurrent detection value is constant, set the RT resistance as illustrated in figure 17, so that ...

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R2A20111SP/DD 2. Operation of PFC On/Off Function PFC function of the R2A20111 can be turned on and off externally using the following methods. (1) Pull down the voltage on the PFC-ON pin to the GND level. (2) Pull up the ...

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R2A20111SP/DD 2-2. On/Off Operation by Using the SS Pin When the voltage on the SS pin is pulled up to the VREF voltage level, the voltage level of the CAO pin is also pulled up together with the SS pin. ...

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R2A20111SP/DD 3. Overcurrent Detection Circuit When the RC filter is added the CLIMIT pin to prevent noise errors (see figure 21), the cut-off frequency shifts on the lower frequency side than the added RC filter because of the Rclimit 1 ...

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R2A20111SP/DD 4. PFC Hold Function The PFC hold time can be adjusted by changing the value of the capacitor connected to the DELAY pin. The capacitance is charged with the source current from the IC and the PFC hold function ...

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R2A20111SP/DD 5. Precautions on Pins 5-1. OUT Pin Undershoot may occur on the PWM pulse of the OUT pin because of a parasitic inductance of wiring, etc. This undershoot (negative electric potential) may cause errors of the IC. In such ...

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R2A20111SP/DD 6. Pattern Layout In designing the pattern layout, pay as much attention as is possible to the following points. (1) Place the IC pins (particularly, CGND, CAI, PFC-ON, IAC, FB) and their wiring as far from high-voltage switching lines ...

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R2A20111SP/DD (6) There is a potential that placing the heat sink between ICs and power MOSFET will be a some kind of shield and reduce the radiation noise (figure 25). IC REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page ...

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R2A20111SP/DD Package Dimensions JEITA Package Code RENESAS Code P-SOP16-5.5x10.06-1.27 PRSP0016DH Index mark JEITA Package Code RENESAS Code P-DIP16-6.3x19.2-2.54 PRDP0016AE 0. REJ03F0231-0100 Rev.1.00 Mar 28, 2007 Page Previous ...

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Notes: 1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained ...