L6563 STMicroelectronics, L6563 Datasheet - Page 25

• Manufacturer Part Number: L6563
• Description: IC PFC CTRLR TRANSITION 14SOIC
• Manufacturer: STMicroelectronics

Specifications of L6563

• 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
• For Use With: 497-9082 - EVAL BOARD L6563 (200W)497-8850 - BOARD EVAL FOR L6563/STW55NM60N497-8834 - BOARD DEMO FOR L6563/LL6566A497-8429 - BOARD ADAPTER L6599/STP12NM50N497-5854 - DEMO BOARD FOR L6563497-5496 - EVAL BOARD FOR L6599497-5493 - EVAL BOARD FOR L6563
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

L6563 - L6563A
5.
Equation 10
In the following Mathcad® sheet, as an example, the calculation is shown for the circuit
illustrated in
function.
Design data
Step 1
Step 2
Step 3
Vin
k:
R1:
Check that the maximum current sourced by the TBO pin (pin 6) does not exceed the
maximum specified (0.25mA):
Vin
Vin
Vox ;= 400V
∆Vo ;= 40V
choose: Vin
=
clamp
1
2
=
-----------------------
:= 88V
:= 264V
2 Vin
∆
---------- - 10
20
:
⋅
Vo
3
Figure
=
Vox Vo
-------------------------- - Vin
Vo
⋅
x
x
2
: = 270V
6
–
–
40.
Vo
1
1
Figure 41
⋅
Vo
Vo
2
1
2
–
:= 200V
:= 385V
Vox Vo
-------------------------- - Vin
Vo
I
shows the internal block diagram of the tracking boost
TBOmax
2
–
–
Vo
1
2
⋅
=
------ -
R
3
T
1
≤
0.25 10
⋅
–
3
Vin
R1 = 2 x 10
k = 7.857 x 10
Application information
clamp
= 278.27V
6
Ω
-3
25/39