Datasheet

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12V0

GND_IN

12V_IN

Synchronous

step-down

regulator

LT8609SE V#PB F

5V0

PLT10HH401100P NB

12V_PS

LTC7150SE Y#PB F

LT8642SE V#PB F

3V3

P C33P F8100A0E S

VDD_EN

2V5

OVDD

V/A/P

INA220A

1mOHm/3W

LEGE ND:

Switchable

Regulator

LDO Regulator

Power Switch

CPU_VDD

PS _XVDD

AC 110/220V@ 50/60Hz

DDR_VTT

CPU_VDD

CPU_USB _SVDD

CPU_USB _SDVDD

3V3

CPU_USB _HVDD

XVDD

PS _XVDD

On Board

Peripherals

CPU_VDD,

US B_S VDD,

US B _S DVDD

CPU_SVDD

US B3.0 Ports x2

GST60A12-P1J

12V-5A (60W )

DC power adapter

For QS GMII PHY

SVDD

CPU_VDD

For QS GMII PHY , TVDD

CPU_OVDD & other Peripheral

PJ -

063AH

GVDD

P ower

adapter

5V@2A

Step-down

regulator

1/0.9V@20A

Synchronous

step-down

silent switcher

3.3V@10A

Multi-output

DC-DC

regulator

(LX1) 1V@1A

(LX2) 1.8V@2A

(LX3) 1.35V@0.4A

(LX5) 1.2V@3A

(LX6) 0.6V@1A

(LX7) 2.5V@1A

LDO1, LDO2, LDO3

(LDO4) 1.8V@0.1A

LPF

Figure 4. Power supply block diagram

Note that several power supplies have onboard low-pass filters to prevent board switching noise from coupling into sensitive analog

supplies. The figure below shows the filters used.

Figure 5. Low-pass filters

2.1.1 Primary power supply

The FRWY-LS1046A is powered up using an external 12 V DC power adapter. The table below describes the 12 V power adapter.

Table 4. 12 V power adpater

Part number Input power specifications Output power specifications

GST60A12-P1J (MEAN

WELL)

• Input: 110 - 230 VAC, 50 - 60 Hz

• 3-pole AC inlet (IEC 320 C14)

• Output: 12 V, 0 - 5 A DC power supply adapter

(160 W) - standard

• DC jack (2-pin, 2.1 mm x 5.5 mm x 11 mm)

Power supplies

Layerscape FRWY-LS1046A Board Reference Manual, Rev. 0, 26 April 2019

NXP Semiconductors