IC-NZ Datasheet, PDF (18/20 Pages) IC-Haus GmbH – FAIL-SAFE LASER DIODE DRIVER

iC-NZ
FAIL-SAFE LASER DIODE DRIVER
Rev B2, Page 18/20
ing RLDA. iC-HK is a fast, spike-free laser switch with
which up to 1.4 A can be driven in pulsed operation.
An iC-HK can be connected to each channel on iC-NZ
so that a maximum laser pulse current of 4.2 A can
be achieved (depending on pulse frequency, duty cy-
cle and thermal dissipation). To this end pins CIx (x:
L, M, H) on iC-NZ must be connected to the CI inputs
of the relevant iC-HK and iC-NZ inputs LENx to iC-HK
inputs EN1 and EN2 (Figure 16). Individual levels are
set as described above in Switching up to three laser
power levels.
VDD
Safety
Monitor
Diode
RSMD
RLDA
Q1
R1
SDIS
LENL LENM LENH
REGEN LENL LENM
LENH
RVDD
LDA
LDKH
LDKM
LDKL
VDD
RSI
CIH
CIH
CIM
CIM
EN
CIL
CIL
SMD
iC−NZ
MDL
CLDA
LDK
VDD
CI
LENL
EN1
GND
EN2
iC−HK
AGND1
AGND2
RMDM
RGND
GND
RMDH
RMM
CREF
AGND
RMH
LD MD
LDK
VDD
CI
EN1
GND
EN2
iC−HK
AGND1
AGND2
LENL
LDK
VDD
CI
EN1
GND
EN2
iC−HK
AGND1
AGND2
LENM
RML
LENH
Figure 16: Extending the laser current