XRP6141 Datasheet, PDF (12/14 Pages) Exar Corporation – 35A Synchronous Step Down COT Controller

Applications Circuit
XRP6141
35A Synchronous Step Down COT Controller
DZ MMSZ4685T1G
RZ 10k
2-3 --> DCM
J1
3
2
1
3
2
1
1-2 --> CCM
C16 0.22uF R5 60.4k
R6 71.5k
EN/MODE
RON 11.8k
SS
CSS
47nF
PGOOD
9 _SS
VCC
R4
10k
10 _PGOOD
FB
11 _FB
12
AGND
17 _EXPAD
AGND
U1
XRP6141
RLIM 1.5k
CBST 1uF
RBST
8.2 Ohm
GH ⁴
SW ³
NC ²
1
GL
CIN 0.1uF
R3
NP
CVCC 4.7uF
VCC
VIN
VCC
VIN
12VIN
VIN+
MT
FDMS7578
C1
C2
C3
C4
C5
T3
22uF 22uF 22uF 22uF 22uF
T4
VIN-
T5 T6
L1, IHLP-5050FD-01
0.47uH, 41A, 1mOhm
300kHz, 1.2VOUT, 0-25A
T7 T8
MB
FDMS7650DC
RSNB
NP
RFF
0 Ohm
CSNB
NP
CFF
3.3nF
C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 T1
330uF 330uF 330uF 330uF NP NP NP NP NP NP
T2
R1
2k
FB
FB
R2
2k
VOUT+
VOUT+
VOUT-
VOUT-
© 2015 Exar Corporation
12/14
Rev. 2.0.0