Power supply architecture

The ConnectCore 6 provides a primary 5 V power supply input. This supply is the main power domain to the on-module Dialog DA9063 power management IC (PMIC), which generates all required supply voltages for the module components as well as the carrier board.

The module provides support for a backup battery (coin-cell or super cap) powering the real-time clock (RTC) on the module. In addition, rechargeable backup batteries (ML414, others) are also supported.

The PMIC generates the following power domains that are available on the module pads:

3.3 V (VGEN_3V3)
Moreover, 5x PMIC LDO outputs are also available on the module pads:
- VLDO3
- VLDO4
- VLDO6
- VLDO7
- VLDO8

Power domain	Regulator type	Output accuracy	Maximum current	Dropout voltage (MAX)	Turn on time (MAX)	Turn off time (MAX)	Quiescent current in OFF mode (TYP)
3.3 V	DC/DC	+/-3%	1500 mA	-	1 µA	1.2 ms	-

Power domain

Regulator type

Output accuracy

Maximum

current

Dropout voltage (MAX)

Turn on time (MAX)

Turn off time (MAX)

Quiescent current in OFF mode (TYP)

3.3 V

DC/DC

+/-3%

1500 mA

1 µA

1.2 ms

Note The maximum current consumption mentioned in the previous table is a combination of the current consumed by the module (max 500 mA) and by the carrier board for external use (1000 mA).

The table below provides the characteristics of the optional LDO outputs:

Primary 5V power supply input	Input voltage	Output voltage	Output accuracy	Default voltage	Maximum current	Drop output voltage (MAX)	Quiescent current in OFF mode (TYP)	Turn on time (MAX)	Turn off time (MAX)
VLDO3	+5VDC	0.9-3.44V	+/-3%	3.3 V	200 mA	150 mV	1 µA	300 µs	1 ms
VLDO4	+5VDC	0.9-3.44V	+/-3%	3.3 V	200 mA	150 mV	1 µA	300 µs	1 ms
VLDO6	+5VDC	0.9-3.6V	+/-3%	3.3 V	200 mA	150 mV	1 µA	200 µs	1 ms
VLDO7	+5VDC	0.9-3.6V	+/-3%	1.8 V	200 mA	150 mV	1 µA	300 µs	1 ms
VLDO8	+5VDC	0.9-3.6V	+/-3%	3.3 V	200 mA	150 mV	1 µA	300 µs	1 ms

Note For information about using the LDO options, contact Digi. VLDO3 is used for supplying MCA processor on the module.

The power management IC located on the module is responsible for generating all required i.MX6 processor supply voltages. The following i.MX6x supplies are available on the module pads:

Some of the I/O supplies are set on the module. See the following table:

Power domain	Connection
NVCC_GPIO	VGEN_3V3
NVCC_JTAG	VGEN_3V3
NVCC_NANDF	VGEN_3V3
NVCC_SD1	VGEN_3V3
NVCC_SD2	VGEN_3V3
NVCC_SD3	VGEN_3V3
PCIE_VPH	2.5V (VDDHIGH_CAP_2V5)

The remaining I/O voltages must be set externally and are left open on the ConnectCore 6 module. See the following table for operating ranges of the remaining I/O supplies.

Power domain	Min	Typical	Max
NVCC_ENET	1.8 V	2.5 V	3.3 V
NVCC_EIM	1.8 V	2.5 V	3.3 V
NVCC_LCD	1.8 V	2.5 V	3.3 V
NVCC_CSI	1.8 V	2.5 V	3.3 V
NVCC_MIPI	2.25 V	2.5 V	3.3 V
NVCC_RGMII in HSIC 1.2 V mode	1.15 V	-	1.30 V
NVCC_RGMII in RGMII 1.5 V mode	1.43 V	-	1.58 V
NVCC_RGMII in RGMII 1.8 V mode	1.70 V	-	1.90 V
NVCC_RGMII in RGMII 2.5 V mode	2.25 V	-	2.625 V

As shown in the table above, the supplies have a wide operating range. In order to provide the most cost-effective and flexible solution for a given use-case, the supplies listed in the table need to be provided by the carrier board integrating the ConnectCore 6 module. However, PMIC power domains 3.3 V—and LDO3/4/6/7/8 options—are dedicated power sources for supplying i.MX6 power domains.

The MCU-assist-specific power domain (LDO3_MCA) available on the ConnectCore 6 LGA pads is a power supply output that powers the on-module Kinetis processor.

The following diagram outlines the ConnectCore 6 power supply.

Inputs are marked red; blue marks are outputs.