1
1
1
1
1
1
1
1
1
57.6k (default)
174k
57.6k
24.3k (default)
FCCM
HEF Mode
Mode
105k
174k
24.3k
GND
105k
GND
DE Mode
Notes:
Pull High/ Float
1.1MHz, 4.5A OCP
2MHz, 6.5A OCP
750kHz, 6.5A OCP
750kHz, 4.5A OCP
Frequency/OCP
Connection
Pull High/ Float
DE Mode, 4X S
.S
.Time
HEF Mode, 4X S
.S
.Time
Connection
NO
T POPULA
TED
2MHz, 4.5A OCP
1.1MHz, 6.5A OCP
FCCM , 4X S
.S
.Time
VIN
GND
2.9V - 6V
VOUT
GND
1.5V/5A
VIN
GND
VOUT
GND
VREG3
GND
EN
PGD
CHA
CHB
GND
SW
Control Loop
Injection & Measuring
Open to Enable
C6
1
2
J4
TP11
C8
22uF
R8
0
C4
1.0uF
TP12
R13
0
C18
0.1uF
C1
3.3nF
R2
2.0k
TP1
TP2
TP10
TP7
TP9
TP3
R7
2.0k
R5
49.9
L1
1.0uH
C11
22uF
C13
22uF
C15
C17
C5
R14
10.0k
C7
22uF
C9
0.1uF
TP4
TP8
R9
1.33k
R3
10.0
R19
R17
105k
R15
24.3k
1
2
J3
R11
R6
105k
R1
24.3k
1
2
J2
C3
100pF
C10
22uF
C12
22uF
C2
3.3nF
R18
174k
R10
174k
R16
57.6k
C14
C16
R4
57.6k
1
2
3
4
5
6
7
8
9
10
11
12
J1
1
2
3
4
5
6
7
8
9
10
11
12
J5
R12
2.0
C19
1.0nF
TP6
TP5
1
EN
2
RF
/O
C
3
PG
D
4
VB
ST
5
SW
6
SW
7
SW
8
PS
9
CO
MP
10
FB
11
AG
ND
12
VR
EG
3
13
VIN
14
VIN
15
PGND
16
PGND
17
PGND
U1
TPS53316RGT
VIN
PGD
EN
VOUT
VOUT
PWRGND
PWRGND
Schematic
4
Schematic
Figure 1. TPS53316EVM-075 Schematic
4
5-A Step-Down Regulator with Integrated Switcher
SLUU671
–
December 2011
Copyright
©
2011, Texas Instruments Incorporated
