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UC3842BDG Datasheet(PDF) 15 Page - ON Semiconductor |
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UC3842BDG Datasheet(HTML) 15 Page - ON Semiconductor |
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UC3842B, UC3843B, UC2842B, UC2843B http://onsemi.com 15 + - + - 5.0V Ref 36V S R Q Bias + 1.0mA Osc R R R 2R EA 1.0V 7(12) 7(11) 6(10) 5(8) 3(5) RS VCC Vin 1(1) 2(3) 4(7) 8(14) RT CT The buffered oscillator ramp can be resistively summed with either the voltage feedback or current sense inputs to provide slope compensation. m - 3.0m -m Rf Cf Ri Rd From VO RSlope MPS3904 5(9) Comp/Latch Figure 33. Error Amplifier Compensation + R 2R 1.0mA EA 2(3) 5(9) 2.5V 1(1) Rf Cf Rd Ri From VO Error Amp compensation circuit for stabilizing any current mode topology except for boost and flyback converters operating with continuous inductor current. Rf ≥ 8.8 k + R 2R 1.0mA EA 2(3) 5(9) 2.5V 1(1) Rf Cf Rd Rp From VO Error Amp compensation circuit for stabilizing current mode boost and flyback topologies operating with continuous inductor current. Cp Ri Figure 34. Slope Compensation |
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