EVAL6599-400W-S STMicroelectronics, EVAL6599-400W-S Datasheet - Page 16

• 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

Electrical test results
2.5
16/35
+200 V output. Though the resonant converter can operate down to zero load, some actions
are required to keep the input power drawn from the mains very low when the complete
system is in this load condition. Thus, when entering this power management mode, the ST-
BY signal needs to be set high (by the microcontroller of the system). This forces the PFC
pre-regulator and the resonant stage to switch off, because the supply voltage of the two
control ICs is no longer present
working just to supply the microprocessor circuitry.
Table 3.
conditions at 115 and 230 V
0.5 W.
Table 3.
Table 4.
Short-circuit protection
The L6599 is equipped with a current sensing input (pin 6, ISEN) and a dedicated
overcurrent management system. The current flowing in the circuit is detected (through the
not dissipative sensing circuit already mentioned in
divider formed by the resonant capacitor C28 and the capacitor C34, followed by an
integration cell D12, R45, C39) and the signal is fed into the ISEN pin. This is internally
connected to the input of a first comparator, referenced to 0.8 V, and to that of a second
comparator referenced to 1.5 V. If the voltage externally applied to the ISEN pin exceeds 0.8
V, the first comparator is tripped causing an internal switch to be turned on discharging the
soft-start capacitor CSS.
For output short-circuits, this operation results in a nearly constant peak primary current.
The designer can externally program the maximum time (t
to run overloaded or under short-circuit conditions. Overloads or shortcircuits lasting less
than t
duration phenomena. If, instead, t
+5 V @load(A)
+5 V @load(A)
SH
5.06 - 0.017
5.04 - 0.017
4.98 - 0.017
4.90 - 0.017
4.47 - 0.000
5.06 - 0.017
5.04 - 0.017
4.98 - 0.017
4.90 - 0.017
4.47 - 0.000
and
will not cause any other action, hence providing the system with immunity to short
Table 4.
Stand-by consumption at VIN = 115 V
Stand-by consumption at VIN = 230 V
show the measurements of the input power in several light load
+3.3 V @load(A)
+3.3 V @load(A)
AC
3.33 - 0.102
3.33 - 0.079
3.33 - 0.046
3.33 - 0.024
3.33 - 0.000
3.33 - 0.102
3.33 - 0.079
3.33 - 0.046
3.33 - 0.024
3.33 - 0.000
. These tables show that at no-load the input power is about
(Figure
SH
is exceeded, an overload protection (OLP) procedure is
3) and only the auxiliary flyback converter continues
Chapter
AC
AC
P
P
OUT
0.425
0.349
0.238
0.163
OUT
0.425
0.349
0.238
0.163
0.00
0.00
(W)
(W)
SH
1, mainly based on a capacitive
) that the converter is allowed
P
P
0.860
0.750
0.581
0.475
0.245
1.156
1.044
0.870
0.755
0.510
IN
IN
(W)
(W)
AN2492