E-L6563TR STMicroelectronics, E-L6563TR Datasheet - Page 17

IC CTRLR PFC TRANSITION 14-SOIC

E-L6563TR

Manufacturer Part Number
E-L6563TR
Description
IC CTRLR PFC TRANSITION 14-SOIC
Manufacturer
STMicroelectronics
Datasheet

Specifications of E-L6563TR

Mode
Discontinuous (Transition)
Current - Startup
50µA
Voltage - Supply
10.3 V ~ 22 V
Operating Temperature
-25°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Maximum Operating Temperature
+ 150 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 25 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency - Switching
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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
17/39

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