EVAL6599-200W STMicroelectronics, EVAL6599-200W Datasheet - Page 22

• 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

Application information
22/36
Figure 29. Power vs frequency curve in an resonant half-bridge
As a result, the average input current will smoothly increase, without the peaking that occurs
with linear frequency sweep, and the output voltage will reach the regulated value with
almost no overshoot.
Typically, R
where f
quite empirical and is a compromise between an effective soft-start action and an effective
OCP (see next section). Please refer to the timing diagram of
significant signals during the soft-start phase.
start
SS
is recommended to be at least 4 times f
and C
SS
| Z ( f ) |
will be selected based on the following relationships:
- 1
R
C
SS
ss
=
=
RESONANCE
FREQUENCY
--------------------- -
f
----------- - 1
Steady-state
f
3 10
-------------------
start
RF
min
frequency
R
⋅
SS
min
–
–
min
3
. The proposed criterion for C
Figure 32
frequency
Initial
to see some
f
SS
L6599
is