EVAL6599-400W-S STMicroelectronics, EVAL6599-400W-S Datasheet - Page 18

• Manufacturer Part Number: EVAL6599-400W-S
• Description: DEMO BOARD FOR L6599
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVAL6599-400W-S

• Main Purpose: AC/DC, Primary Side and PFC
• Outputs And Type: 3, Isolated
• Power - Output: 400W
• Voltage - Output: 200V, 5V, 3.3V
• Current - Output: 2A, 1A, 700mA
• Voltage - Input: 90 ~ 264VAC
• Regulator Topology: Resonant
• Board Type: Fully Populated
• Utilized Ic / Part: L6563, L6599
• Input Voltage: 90 V to 264 V
• Output Voltage: 3.3 V to 200 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: 497-5856

Thermal tests
3
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under control and if a fault condition is detected, the PFC_OK circuitry will latch the PFC
operation and, by means of the PWM_LATCH pin 8 it will also latch the L6599 via the DIS
pin of the resonant controller.
The OVP circuit (see
resistive divider (R75, R76, R80) and the zener diode D21 to sense the +200 V output: if the
sensed voltage exceeds the threshold imposed by the zener diode plus the VBE of Q10, the
transistor Q9 starts conducting and the optocoupler U8 opens Q7, so that the VAUX supply
voltage of the controller ICs L6563 and L6599 is no longer available. This state is latched
until a mains voltage recycle occurs.
Thermal tests
In order to check design reliability, a thermal mapping by an IR Camera was performed.
Figure 19.
nominal input voltage. The correlation between measurement points and components is
indicated for both diagrams in
All other board components work well within the temperature limits, assuring a reliable long
term operation of the power supply.
Note that the temperatures of L4 and T1 have been measured both on the ferrite core (Fe)
and on the copper winding (Cu).
Table 5.
Point
G
M
O
and
A
B
C
D
E
H
K
N
P
F
L
J
I
Key components temperature at nominal voltages and full load
Figure 20.
Figure
show the thermal measurements of the board, component side, at
3) for the output voltages of the resonant converter uses a
Table 5.
T1-(CU)
L4-(CU)
T1-(FE)
L4-(FE)
Item
D8A
D14
C38
C45
R22
Q1
Q6
D2
R2
D3
C8
U5
230
40,3°C
44,2°C
46,0°C
44,5°C
63,5°C
46,1°C
39,3°C
51,4°C
63,7°C
51,3°C
53,2°C
51,8°C
39,4°C
36,1°C
44,5°C
41,4°C
V
AC
115
47,6°C
50,5°C
55,5°C
53,4°C
73,0°C
51,0°C
40,1°C
52,8°C
62,6°C
49,6°C
53,4°C
52,3°C
38,5°C
35,7°C
44,9°C
55,6°C
V
AC
AN2492