11 / 14 page
PJ3844B / PJ3845B
High Performance Current Mode Controller
11-14
2004/11. Rev B
FIGURE 32-SLOPE COMPENSATION
The buffered oscillator ramp can resistively summed with either the voltage
feedback or current sense inputs to provide slope compensation.
FIGURE 33-27 WATT OFF-LINE REGULATION
T1-Primary:45 Turns #26 AWG
Secondary ±12V :9 Turns #30 AWG (2 strands ) Bifiliar Wound
L1-15μH at 5.0A, Coilcraft 27156.
Secondary 5.0V: 4 Turns (six strands) #26 Hexfiliar Wound
L2.L3-25μH at 1.0A, Coilcraft 27157.
Secondary Feedback : 10 Turns #30 AWG (2 strands) Bifiliar Wound
Core: Ferroxcube EC35-3C8
Bobbin : Ferroxcube EC35PCB1
Gap：
10
.
0
≅
” for a primary inductance of 1.0mH
Line Regulation：5.0V
Vin=95 to 130 Vac
=50mV or ±0.5%
Line Regulation：±12V
=24mV or ±0.1%
Load Regulation：5.0V
Vin=115Vac, Iout =1.0A to 4.0A
=300mV or ±3.0%
Load Regulation：±12V
Vin=115Vac,Iout=100mA to 300mA
=60mV or ±0.25%
Output Ripple：5.0V
Vin=115Vac
40mVp-p
Output Ripple：±12V
80 Vp-p
Efficiency
Vin=115Vac
70%
All outputs are at nominal load currents unless otherwise noted.
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