TLD5190QV Datasheet, PDF (25/58 Pages) Infineon Technologies AG – H-Bridge DC/DC Controller for High Power LED Lighting

H-Bridge DC/DC Controller
TLD5190QV
Regulator Description
ILOUT
VIN ≤ VOUT
V_IN
V_OUT
HSGD1
SWN1
M1
M4
(2) Direct Transfer
(4) Direct Transfer
L_{OUT (3) Recirculation}
HSGD2
SWN2
M1 M1
M1 M1 M1
M1 M1 M1
M1
t
+
+
+
+
+
+
+
+
+
M3 M4
M4 M3 M4
M4 M3 M4
M4
LSGD1
(1) Energizing
M2
M3
LSGD2
ILOUT
VIN ≥ VOUT
R_SWCS
M2 M1
M1 M2 M1
M1 M2 M1
M1
t
+
+
+
+
+
+
+
+
+
M4 M4
M4 M4 M4
M4 M4 M4
M4
Figure 14 4 switches H-Bridge architecture in BUCK-BOOST mode
6.5
Flexible current sense
The flexible current sense implementation enables highside and lowside current sensing.
The Figure 15 displays the application examples for the highside and lowside current sense concept.
VIN
VIN
Highside
Sensing
FBH
FBL
FBH
FBL
Figure 15 Highside and lowside current sensing - TLD5190QV
Lowside
Sensing
Data Sheet
25
Rev. 1.0, 2016-05-20