TLF51801ELV Datasheet, PDF (21/29 Pages) Infineon Technologies AG – 10 A synchronous DC/DC Step-Down Controller

TLF51801ELV
Application Information
9
Application Information
Note: The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
9.1
Application Diagram
V_S
EN
GND
CIVCC
DBOOT
CIN1 CIN2 CIN
IVCC
sensehigh
R sense
*
VS
senselow
LDO
EN
GND
Enable
Softstart
Tem p .SD
V_ls
BTS
CBTS
UG
HIGH
SYNC/ FREQ
COMP
Osc
Sync
Step Down
Regulator
V_l s
BUO
LG
LOW
FB
TLF 51801ELV
PGND
L1
D1
COUT1
COUT2
RFREQ
CL
RF
R1
CCF
CF
R2
Parts in grey are optional
* ^{Parts suggested for suppresion of EME}
V_CC
GND
Figure 12 Application Diagram (Current limitation with Rdson-configuration)
Note: This is a very simplified example of an application circuit. The function must be verified in the real application
V_S
EN
GND
CIVCC
DBOOT
CIN1 CIN2 CIN
IVCC
sensehigh
R sense
R shunt
*
VS
senselow
LDO
EN
GND
Enable
Softstart
Temp .SD
V_ls
BTS
CBTS
UG
HIGH
SYNC/ FREQ
Osc
Sync
L1
BUO
COMP
Step Down
Regulator
V_l s
LG
LOW
FB
TLF 51801ELV
PGND
D1
COUT1
COUT2
RFREQ
CL
RF
R1
CCF
CF
R2
Parts in grey are optional
* ^{Parts suggested for suppresion of EME}
V_CC
GND
Figure 13 Application Diagram (Current limitation with Shunt-configuration)
Note: This is a very simplified example of an application circuit. The function must be verified in the real application
Data sheet
21
Rev. 1.0.1, 2013-04-15