STEVAL-ISF001V1 STMicroelectronics, STEVAL-ISF001V1 Datasheet - Page 17

• Manufacturer Part Number: STEVAL-ISF001V1
• Description: BOARD EVAL FOR L6563/STW55NM60N
• Manufacturer: STMicroelectronics
• Type: MOSFET & Power Driverr

Specifications of STEVAL-ISF001V1

• Main Purpose: Power Management, Power Factor Correction
• Embedded: No
• Utilized Ic / Part: L6563
• Primary Attributes: 3 kW, 400 V Out, FOT(Fixed Off Time Control), 240 VAC (185 ~ 265 Vrms)
• Secondary Attributes: Iout Max 7.5 A
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: STW55NM60N
• Other names: 497-8850

L6563 - L6563A
An important advantage of this technique is that the overvoltage level can be set
independently of the regulated output voltage: the latter depends on the ratio of R1 to R2,
the former on the individual value of R1. Another advantage is the precision: the tolerance of
the detection current is 15%, which means 15% tolerance on the ∆V
much smaller than Vo, the tolerance on the absolute value will be proportionally reduced.
Example: V
Then: R1 = 40V/20µA = 2MΩ ; R2 = 2.5·2MΩ·/(400-2.5) = 12.58kΩ.
The tolerance on the OVP level due to the L6563/A will be 40·0.15 = 6 V, that is ± 1.36%.
When either OVP is activated the quiescent consumption is reduced to minimize the
discharge of the Vcc capacitor.
Figure 34. Output voltage setting, OVP and FFP functions: internal block diagram
R3
{
O
R3b
R3a
= 400V, ∆V
R4
R1
{
O
R1b
R1a
Vout
= 40V.
PFC_OK
R2
INV
7
1
Compensation
Frequency
9.5V
9.5V
0.26V
I
TBO
2.5V
FUNCTION
+
+
-
-
+
TBO
-
E/A
2
+
FAULT (not latched)
-
20 µA
COMP
FAULT (latched)
2.25V
Application information
O
. Since it is usually
Dynamic OVP
L6563A
L6563
Static OVP
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