EVAL6599-200W STMicroelectronics, EVAL6599-200W Datasheet - Page 13

• Manufacturer Part Number: EVAL6599-200W
• Description: EVAL BOARD FOR L6599
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVAL6599-200W

• Main Purpose: AC/DC, Primary Side and PFC
• Outputs And Type: 4, Isolated
• Power - Output: 200W
• Voltage - Output: 24V, 12V, 5V, 3.3V
• Current - Output: 6A, 5A, 1A, 700mA
• Voltage - Input: 90 ~ 264VAC
• Regulator Topology: Resonant
• Frequency - Switching: 95kHz
• Board Type: Fully Populated
• Utilized Ic / Part: L6563, L6599
• Input Voltage: 90 V to 264 V
• Output Voltage: 3.3 V to 24 V
• Dimensions: 132 mm x 265 mm
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6599
• Other names: 497-5496

AN2393
Figure 9.
+24 V output waveforms:
Ch1: +24 V diode reverse voltage
Ch2: high freq. ripple on +24 V output voltage
Ch3: diode D8A current
Waveform CH3 shows the current flowing into one of the two output diodes for each output
voltage (respectively D8A and D10A). Also this current shape is almost a sine wave, whose
average value is one half the output current.
The ripple and noise on the output voltage is shown on CH2. Thanks to the advantages of
the resonant converter, the high frequency noise of the output voltages is less than 50 mV,
while the residual ripple at twice the mains frequency is lower than 75 mV at maximum load
and any line condition, as shown in
Figure 11. Low frequency (100 Hz) ripple voltage on the output voltages
Figure 12
100% on one output, with the other output at maximum load. This figure also highlights the
induced effect of this load change on the PFC pre-regulator output voltage (+400 V on Ch3
track). Both the transitions (from 0 to 100% and from 100% to 0) are clean and do not show
any problem for the output voltage regulation.
Resonant circuit secondary side
waveforms: +24 V output
shows the dynamic behavior of the converter during a load variation from 0 to
Figure
Figure 10. Resonant circuit secondary side
+12 V output waveforms:
Ch1: +12V diode reverse voltage
Ch2: high freq. ripple on +12 V output voltage
Ch3: diode D10A current
11.
waveforms: +12 V output
Ch1: 100 Hz ripple voltage on +12 V
Ch2: 100 Hz ripple voltage on +24 V
Electrical test results
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