Evm Schematics; Power Supply Schematic - Texas Instruments LMK5C33216EVM User Manual

EVM Schematics

4 EVM Schematics

4.1 Power Supply Schematic

POWER INPUT
J1
1
2
3
4
PWR
VIN3
TP3
VIN1
3.6 to 5 V
J2 VIN1
DNP
1
DNP
C10
D1
47µF
DIODE_SCHOTTKY
VIN1
20V
TP7
J3 VIN2 VIN2
DNP
1
DNP
C27
D2
47µF
DIODE_SCHOTTKY
VIN2
20V
14 LMK5C33216EVM User's Guide
DUAL 1-A LDO REG (LDO1, LDO2) for DUT VDD & VDDO rails
LDOIN U2
1
2
C7 R2
10uF 47k
EN1 20
18
R4
C8
DNP C9
0.01uF 19
0
C11 C12
22uF 0.1uF 0.1uF
4
5
C13 R5
EN2 6
10uF 47k
8
C16
DNP C17
7
0.01uF
0.1uF
TPS7A8801RTJR
1-A LDO REG (LDO3) for XO rail
LDO3 IN
SH3 JP3
1
2
3
SNT-100-BK-G R8
M20-8770342 47k EN3
C23
10uF
C24
0.01uF
Figure 4-1. Power Supplies
Copyright © 2021 Texas Instruments Incorporated
R1 C1
3.57k 0.01uF
14
IN1 OUT1
15
IN1 OUT1
EN1
R3
1.15k
17
SS_CTRL1 PG1
16 FB1
NR/SS1 FB1
11
IN2 OUT2
12
IN2 OUT2
EN2
R6 C14
9 3.57k 0.01uF
SS_CTRL2 PG2
FB2
10
3.3V
NR/SS2 FB2
3
GND
13
GND
21
PAD
R7
1.15k
LDO3 OUT 3.3V
TP6
U3 LDO3 LDO3
DNP
7 1
IN OUT
8 2
IN OUT
R9
5 30.9k C22
EN
0.47uF
3
FB/SNS
4
GND
C25
6
NR
R10 10uF
9
PAD
C26 10.0k
0.47uF
SNAU260A – OCTOBER 2020 – REVISED FEBRUARY 2021
www.ti.com
SELECT LDO or BYPASS
LDO1 OUT: 3.3 V
TP1
LDO1 LDO1
DNP
DUT VDD CORE POWER (3.3V)
VDD
SH1 JP1 TP2
C2
1 VDD
10uF 2
3
SNT-100-BK-G C3 C4 C5 C6
M20-8770342 22uF 10uF 1uF 1uF
LDO2 OUT: 3.3 V
TP4
LDO2 LDO2
DNP
C15
10uF
DUT VDDO OUTPUT POWER (3.3V)
VDDO
SH2 JP2 TP5
VDDO
1
2
3
C18 C19 C20 C21
SNT-100-BK-G
22uF 10uF 1uF 1uF
M20-8770342
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VDD_PLANE
VDDO_PLANE