Ovp By Cs Pin; Microcontroller Use - Infineon ILD8150 Operation, Design Manual And Performance

ILD8150 80 V high side buck LED driver IC with hybrid dimming
Circuit description
2.2.9

OVP by CS pin

If the load is disconnected, output voltage moves to the V
may be used as shown in Figure 10. The TVS diode conducts current when the output voltage achieves its level,
voltage on the CS pin rises to V
diodes have a high voltage deviation connected with technology and temperature. TVS voltage should be
chosen, as this does not affect operation and also limits output voltage to the right level. R
current through the TVS, reduce dissipated power and reduce switching frequency in OVP mode.
OVP by CS pin
Figure 10
2.2.10

Microcontroller use

A microcontroller may be used together with ILD8150. This enables control of dimming, to read out the output
voltage and drive the IC into shut-down mode. The microcontroller use case is shown in Figure 11.
VCC
Figure 11 Microcontroller use
Application Note
level, the high-side MOSFET switches off, and output voltage drops. TVS
CSH
VCC
SD
Vsd
DIM
IC
DIM
GND
R R
OVP2 OVP1
LDO
SD
OVP
Vsd
DIM
DIM
uC
GND
level. External output Over-Voltage Protection (OVP)
IN
Cin Vin
VIN
BOOT
L
Cboot
Iout
SW
D
TVS
Cout
R
TVS
Rfltr
CS
R
PR
Cfltr
Rcs
VCC
VIN
BOOT
L
Cboot
SW
D
IC
Cout
CS
Rfltr
Cfltr
GND
9 of 28
and R
TVS PR
Cin Vin
Iout
Rcs
limit the
V 1.0
2019-01-23