Datasheet
Table Of Contents
- Figure 1. Typical application circuit
- 1 Pin settings
- 2 Maximum ratings
- 3 Electrical characteristics
- 4 Functional description
- 5 Application notes - buck conversion
- 5.1 Closing the loop
- 5.2 GCO(s) control to output transfer function
- 5.3 Error amplifier compensation network
- 5.4 LED small signal model
- 5.5 Total loop gain
- 5.6 Compensation network design
- 5.7 Example of system design
- 5.8 Dimming operation
- 5.9 Component selection
- 5.10 Layout considerations
- 5.11 Thermal considerations
- 5.12 Short-circuit protection
- 5.13 Application circuit
- 6 Application notes - alternative topologies
- 7 Package mechanical data
- 8 Ordering information
- 9 Revision history
Application notes - alternative topologies LED5000
46/51 Doc ID 023951 Rev 1
Equation 80
where K represents the leading position of the F
Z
(
Equation 11
) in respect to the system
bandwidth. In general a decade (K=10) gives enough phase margin to the overall small loop
transfer function.
6.4.2 f
p
> BW
In case the pole f
p
is outside the system bandwidth BW, the component values composing
the compensation network can be calculated as:
Equation 81
and
Equation 82
where K represents the leading position of the F
Z
(
Equation 11
) in respect to the pole f
p
.
C
C
K
2 π R⋅⋅
C
BW⋅
---------------------------------------------=
R
C
R
EA
A
0
----------
BW
f
p
---------
⋅=
C
C
K
2 π R⋅⋅
C
f
p
⋅
----------------------------------------=