NXP Semiconductors UM11556 User manual

UM11556
PCA9450 evaluation board user manual
Rev. 1.0 — 12 January 2021 User manual
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Keywords PCA9450, Evaluation Board, PMIC
Abstract User manual for PCA9450 family PMIC evaluation board

NXP Semiconductors UM11556
PCA9450 evaluation board user manual
Rev Date Description
v.1.0 20210112 Initial version
Revision history
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PCA9450 evaluation board user manual
1 Introduction
The PCA9450 is a single chip Power Management IC (PMIC) specifically designed
to support the i.MX 8M family processors in both 1 cell Li-Ion and Li-polymer battery
portable application and 5 V adapter non-portable applications.
The device provides six high efficiency step-down regulators, five LDOs, one 400 mA
load switch, 2-channel level translator and 32.768 kHz crystal oscillator driver.
Three buck regulators support Dynamic Voltage Scaling (DVS) feature along with
programmable ramping up and down time, and those buck regulators support remote
sense to compensate IR drop to load. This device is characterized across -40 °C to
105 °C ambient temperature range.
Six step-down regulators are designed to provide power for the i.MX 8M application
processor and DRAM memory. Two LDOs, LDO1 and LDO2, feature very low quiescent
current to provide power for Secure Non-Volatile Storage (SNVS) since these LDOs are
always ON when input voltage is valid.
PCA9450 integrates a 2-bit logic translator and dual supply translating transceiver with
auto direction sensing. It enables bidirectional voltage level translation and can be used
as an I2C level translator. 400 mA load switch is to supply 3.3 V power supply to SD card,
which has internal discharge resistor.
PCA9450 has three versions: PCA9450AA is companion PMIC for i.MX 8M Mini,
PCA9450B is companion PMIC for i.MX 8M Nano and PCA9450C is companion PMIC
for i.MX 8M Plus.
The PCA9450 is offered in 56-pin HVQFN package, 7 mm x 7 mm, 0.4 mm pitch.
2 Key Features
•Six high efficiency step-down regulators
–Three 3 A Buck regulators with DVS feature and remote sense
PCA9450AA – Three 3 A buck regulators
PCA9450B – Two 3 A buck regulators
PCA9450C – 6 A dual-phase buck regulator and 3 A buck regulator
–One 3 A buck regulator
–Two 2 A buck regulators
•Five linear regulators
–Two 10 mA LDOs
–One 150 mA LDO
–One 200 mA LDO
–One 300 mA LDO
•Support various memory types: DDR4/LPDDR4/DDR3L via system UBOOT
configuration, no hardware change required
•400 mA load switch with active discharge
•32.768 kHz crystal oscillator buffer output
•2-channel level translator
•Power control IOs
–Power ON/OFF control
–Standby/run mode control
•Fm+ 1 MHz I2C-bus interface
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PCA9450 evaluation board user manual
•ESD protection
–Human Body Model (HBM) : +/- 2000 V
–Charged Device Model (CDM) : +/-500 V
•7 mm x 7 mm, 56 pin HVQFN with 0.4 mm pitch
3 Applications
•IoT Devices
•Tablet
•Electronic Point of Sale (ePOS)
•Industrial application
4 Evaluation kit components
There are three evaluation boards for the PCA9450 family device: PCA9450AA-EVK,
PCA9450B-EVK and PCA9450C-EVK. When evaluating the device, the kits below are
required:
•1x PCA9450 evaluation board, which allows easy evaluation on function and features
•1x Interface (FTDI C232HM-EDHSL-0) cable, serves as a USB to I2C-bus interface
between the computer and the PCA9450 evaluation board
•A Windows based Graphic User Interface (GUI) provides a user friendly interface to
program on-chip I2C registers to exercise the feature on PCA9450
5 PCA9450 GUI software
•Unzip the provided PCA9450 Evaluation Kit GUI file into selected folder. No need to
install. If password is asked during unzip, type “NXP”.
•Install the FTDI cable driver from website https://www.ftdichip.com/Drivers/D2XX.htm.
•Run the file PCA9450.exe. The interface is shown in Figure 1.
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PCA9450 evaluation board user manual
Figure 1. PCA9450 GUI overview
6 Test setup and evaluation board connections
6.1 Test equipment
•PC/laptop with Windows 7/Windows 10 OS
•Power supply (5 V typical)
•Electronic load
•Oscilloscope/multimeter
•FTDI cable C232HM-DDHSL-0
6.2 Test setup
Figure 2 shows test setup block diagram.
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PCA9450 evaluation board user manual
Figure 2. Test setup
6.3 Evaluation board connection
Figure 3 shows the evaluation board test pin assignment.
Figure 3. PCA9450 board connection
Below is evaluation board jumper/switch settings.
Jumpers/
Switch
Settings Description
S1 ON (default) PMIC_ON_REQ =High
Table 1. Jumper/switch settings
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PCA9450 evaluation board user manual
Jumpers/
Switch
Settings Description
S2 OFF (default) PMIC_STBY_REQ =Low
J6 1-2 (default) VSYS Enablement
J7 No connection (default) PMIC_RST_B
J10 1-2 (default) Pull up of WDOG_B
J11 1-2 (default) Pull up of SDA,SCL, IRQ_B
J12 1-2 (default) Pull up of SCLL,SDAL
J13 1-2 (default) Pull up of SCLH,SDAH
J14 1-2 (default) INL1 Enablement
J20 2-3 (default) SD_VSEL = Low
J27 1-2 (default) BUCK2 Feedback connection:
R_SNSP2
J29 1-2 (default) BUCK1 Feedback connection:
R_SNSP1
J30 PCA9450AA-EVK: 2-3 (default)
PCA9450B-EVK: 2-4 (default)
PCA9450C-EVK: 2-5 (default)
BUCK3 Feedback connection:
R_SNSP3
J33 1-2 (default) SWIN Connect to BUCK4
J34 1-2 (default) SW_EN connect to BUCK4
J36 PCA9450AA-EVK: No connection (default)
PCA9450B-EVK: No connection (default)
PCA9450C-EVK: 1-2 (default)
BUCK1&BUCK3 Single/Dual
Phase
Table 1. Jumper/switch settings...continued
6.4 Connection
Connect wires on the following pins as shown in Figure 3 and make sure the power
supply is turned off during the wiring stage:
•VIN and GND – Connect to external power supply.
•SDA/SCL and GND – Connect to FTDI USB to I2C cable. See Figure 4.
•It can use either external power or buck 5 output for I2C pull up.
•Each power rail output can be connected to e-load for testing.
•Use the test pin to measure the voltage signal by oscilloscope/multimeter.
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PCA9450 evaluation board user manual
Figure 4. I2C connection
7 PCA9450 GUI quick guide
As shown in Figure 5, the GUI is a user friendly tool to access the on-chip registers to
perform write/read commands manually or automatically (depending on different setting
chosen from the GUI). Below is a quick guide of the key blocks that the GUI provides.
Figure 5. PCA9450 GUI summary
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PCA9450 evaluation board user manual
7.1 Connection
After plugging in FTDI cable, GUI will detect cable automatically. Select the cable type
(FT2TP3HO) from drop-down menu, and then click “Connect” button. Turn on the input
power supply; it will show “connected” with green light in the right bottom, “Device
connection status”.
7.2 Register table selection
The registers are categorized for easy use.
•Interrupt/Status – Interrupt, buck/LDO output voltage, fault information, power on
source.
•Configuration – Reset behavior, debounce time, UVLO threshold and buck/LDO output
status.
•Buck123 – Buck1, 2, 3 configuration.
•Buck456 – Buck4, 5, 6 configuration.
•LDO – LDOs and load switch configuration.
7.3 I2C read and write
PCA9450 GUI provides three ways to read and write:
•On register table, click the “read” “write” button for the whole table, or click “ ” for
write and “ ” for read.
•Command: Read or write the Hex value to specific register.
•Script: Run the script to read or write a series of registers. User guide can be found in
help menu.
8 PCA9450 evaluation steps
1. Connect the 3.3 V power to I2C pull up if using external pull up.
2. Connect the jumper as default which is marked with green in schematic.
3. Connect the board to power and PC accordingly.
4. Turn on power supply (5 V) on Vin.
5. Turn on the loading.
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PCA9450 evaluation board user manual
9 Evaluation board schematic
5 5
4 4
3 3
2 2
1 1
D
D
C C B B A A
VPWR 2.7~5.5V
BUCK OUTPUT TPs (Place near board edge)
LOAD SW OUTPUT
Place R9, C13 close to TP8
Place R10, C16 close to TP7
Place R11, C19 close to TP9
LDO OUTPUT TPs
(Place near board edge)
LDOx sense from LDO load caps Sense from INB13 Sense from INB26 Sense from INB45
VPWR
VPWR
VPWR
VPWR
VPWR
LDO1
BUCK5
BUCK5
BUCK4
VPWR
LDO1
LDO2 LDO3 LDO4
LDO5
VPWR
VPWR
BUCK2
BUCK1
BUCK3
BUCK4
BUCK5
VPWR
VPWR
BUCK6
BUCK4 BUCK4
SWOUT
LDO5 LDO4 LDO3 LDO2 LDO1
BUCK2
BUCK1 BUCK3
BUCK4
BUCK5 BUCK6
SWOUT
VPWR
VPWR
VPWR
Drawing Title: Size Document Number Rev Date: Sheet
of
Page Title:
Classification:
SCH-47999 PDF: SPF-47999 X1
PCA9450AA-EVK
C
Friday, November 06, 2020
PCA9450AA
2 2
Company Internal/Proprietary,
Drawing Title: Size Document Number Rev Date: Sheet
of
Page Title:
Classification:
SCH-47999 PDF: SPF-47999 X1
PCA9450AA-EVK
C
Friday, November 06, 2020
PCA9450AA
2 2
Company Internal/Proprietary,
Drawing Title: Size Document Number Rev Date: Sheet
of
Page Title:
Classification:
SCH-47999 PDF: SPF-47999 X1
PCA9450AA-EVK
C
Friday, November 06, 2020
PCA9450AA
2 2
Company Internal/Proprietary,
S2
PMIC_STBY
SWITCH (default) = OFF
2
1
L3
0.47uH
1 2
J36 HDR1X2
BUCK1_3
1
2
TP6
SWOUT
D1 DNP
A C
C22 4.7uF
C3 18pF
C5 4.7uF
J13 HDR1X2
I2CH_PU
1
2
C25 22uF
C15 22uF
D2 DNP
A C
J12 HDR1X2
I2CL_PU
1
2
TP1
LDO1
1
S1
PMIC_ON
SWITCH (default) = ON
2
1
D4
DNP
A C
J7 HDR1X2
PMIC_RST_B
1
2
C29 47uF
R19 0
L6
0.47uH
1 2
Y1 32.768KHZ
1 2
C6 1uF
LK5
GND
R11 0.01
TP7
BUCK1
C16 47uF
D8 DNP
A C
D9 DNP
A C
C21 22uF
C24
4.7uF
TP3
LDO3
1
D7 DNP
A C
TP9
BUCK3
J33
HDR1X2
SWIN
1
2
C14 10uF
C7 1uF
R18 0
TP11
BUCK5
LK1
VPWR
C17 10uF
D3 DNP
A C
C8 2.2uF
TP5
LDO5
1
C13 47uF
R17 0
L1
0.47uH
1 2
C10 1uF
LK4
GND
R2 4.7K
R16
0
DNP
LK3
GND
J34 HDR1X2
SWEN
1
2
C20 10uF
R7 4.7K
R3 4.7K
R1
100K
R5 4.7K
R15 100K
J5 HDR 2X8
Power Kelvin Sense
1
2
3
4 6
5
7
8
9
10
11
12
13
14
15
16
R10 0.01
C11 10uF
LK2
GND
C18 22uF
J20
HDR 1X3
SD_VSEL
1
2 3
L5
0.47uH
1 2
C1 1uF
PCA9450AAHN
U1
VSYS
53
VINT
4
PMIC_RST_B
8
PMIC_ON_REQ
39
PMIC_STBY_REQ
40
WDOG_B
28
RTC_RESET_B
6
POR_B
9
SCL
41
SDA
42
IRQ_B
13
SCLL
27
SDAL
26
SDAH
24
SCLH
25
XTAL_IN
10
XTAL_OUT
11
CLK_32K_OUT
7
INL1
56
LDO1
3
LDO2
2
LDO3
54
LDO4
1
LDO5
55
SD_VSEL
29
INB26_1
47
LX2_1
45
LX2_2
46
R_SNSP2
44
INB13_1
33
LX1_1
36
LX1_2
37
R_SNSP1
38
INB13_2
34
INB13_3
35
LX3_1
31
LX3_2
32
R_SNSP3_CFG
30
INB45_1
16
LX4_1
19
LX4_2
20
BUCK4FB
21
INB45_2
17
INB45_3
18
LX5
15
BUCK5FB
14
INB26_2
48
INB26_3
49
LX6_1
50
LX6_2
51
BUCK6FB
52
SWIN
22
SWOUT
23
SW_EN
12
AGND
5
BUCK_AGND
43
EPAD
57
R8 4.7K
R9 0.01
D6 DNP
A C
R14 100K
J10
HDR 1X3
WDOG
1
2
3
J29 HDR 1X3
SNSP1
1
2
3
TP2
LDO2
1
J30 HDR 5 CROSS
SNSP3
1
2
4 5
3
D11 DNP
A C
R6 4.7K
D12 DNP
A C
TP8
BUCK2
J14 HDR1X2
INL
1
2
C27 1uF
TP10
BUCK4
C19 47uF
J11 HDR1X2
I2C_PU
1
2
J6 HDR1X2
VSYS
1
2
C4 18pF
R13 100K
TP4
LDO4
1
L2
0.47uH
1 2
R20 4.7K
C9 1uF
D10 DNP
A C
J27 HDR 1X3
SNSP2
1
2
3
D5 DNP
A C
J3 HDR 2X3
I2C I/F
1
2
3
4
6
5
R4 100K
C12 22uF
C2 1uF
TP12
BUCK6
C26 1uF
L4
0.47uH
1 2
R21 4.7K
C28 47uF
R12 100K
C23 22uF
J4 HDR 2X8
Digital
1
2
3
4
6
5
7
8
9
10
11
12
13
14
15
16
+5V SDA SCL
SDA
SDAL SCLL PMIC_RST_B RTC_RESET_B POR_B IRQ_B
SDAH SCLH PMIC_ON_REQ PMIC_STBY_REQ WDOG_B CLK_32K_OUT
VPWR VPWR VPWR INL1 LDO1 LDO2 LDO3 LDO4
R_SNSP1 R_SNSP2 R_SNSP3_CFG BUCK4FB BUCK5FB BUCK6FB LDO5
VSYS
VINT
PMIC_STBY_REQ
WDOG_B RTC_RESET_B
POR_B
PMIC_RST_B
PMIC_ON_REQ
SCL
SDA
IRQ_B
SDAL
SCLL
SCLH SDAH
CLK_32K_OUT
LDO2 LDO3 LDO4 LDO5 LDO1
SD_VSEL
LX2
BUCK2_S
R_SNSP1 R_SNSP2 LX1
BUCK3_S
R_SNSP3_CFG
LX3
LX4
BUCK4FB BUCK5FB
LX5
BUCK6FB
LX6
SWIN SWOUT SW_EN
XTAL_IN
XTAL_OUT
INL1
VPWR
BUCK1_S
VINT
VPWR
LX2
LX2
VPWR
LX1
LX1
VPWR
LX3
LX3
VPWR
LX4
LX4
VPWR
LX5
LX5
VPWR
LX6
LX6
Figure 6. PCA9450AA-EVK schematic
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