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Schematic
1-7
Introduction
1.5 Schematic
Figure 1–3 shows the EVM converter schematic diagram. The schematic
diagrams for the other EVM converters are identical except for the controller
IC used.
Figure 1–3. SLVP111–114 EVM Converter Schematic Diagram
IOUT
AGND2
OCP
VHYST
VREFB
VSENSE
ANAGND
SLOWST
BIAS
LODRV
LOHIB
DRVGND
LOWDR
DRV
PWRGD
NC
NC
NC
NC
NC
INHIBIT
IOUTLO
LOSENSE
HISENSE
BOOTLO
HUGHDR
BOOT
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
C16
1µF
C8
1µF
R15
1 M
C7
1µF
R3
10 Ω
Q2
Si4410
R4
10 Ω
C6
0.1 µ F
U1
TPS5633 (See Note)
C5 0.1 µ F
R2
10 kΩ
R1
1 kΩ
+C1
33 µ F
10 V
L1
2.2 µ H
+
C2
150 µ F
6.3 V
+
C3
150 µ F
6.3 V
+
C4
150 µ F
6.3 V
Q1
Si4410
C9
2.2 µ F
R5
2.7 Ω
C15
0.01 µ F
L2
1.5 µ H
+
C10
150 µ F
4 V
+
C11
150 µ F
+
C12
150 µ F
+
C13
150 µ F
C14
10 µ F
R6
4.7 Ω
J1–18
J1–17
J1–16
J1–15
SLVP111 = 3.3 V
SLVP112 = 2.5 V
SLVP113 = 1.8 V
SLVP114 = 1.5 V
O
V
J1–4
J1–2
J1–11
J1–14
J1–13
J1–12
PWR
GND
SENSEH
V
SENSEL/
V
ANAGND
R12
4.7 Ω
C18
0.1 µ F
R8
100 Ω 1%
C22
1µF
C21
0.1 µ F
R11
20 kΩ
1%
C20
1000 pF
R10
100 Ω
1%
C17
0.1 µ F
R10
1%
20 kΩ
C19
0.01 µ F
R13
750 Ω
R7
1 kΩ
R9
11 kΩ
J1–5
J1–6
J1–9
J1–10
J1–7
J1–8
J1–3
J1–1
V
I
RETURN
12 V
RETURN
PG
INHIBIT
NOTE: Last two digits of U1 indicates output voltage option
TPS5633 = 3.3 V (SLVP111)
TPS5625 = 2.5 V (SLVP112)
TPS5618 = 1.8 V (SLVP113)
TPS5618 = 1.5 V (SLVP114)