Sensor Cluster Power Architecture

EPC611-CSP24-001

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

VDD

8V to 9V

8.5V

<±100mV

18mA

VDDIO

2.43V to 5.5V

3.3V

<±50mV

100uA

VDDBS

-11.5V to -10.5V

-11V

<±50mV

2mA

A121-001-T&R

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

VRX

1.71V to 1.89V

1.8V

Not specified

100mA max from all rails

VTX

1.71V to 1.89V

1.8V

VDIG

1.71V to 1.89V

1.8V

VIO

1.71V to 1.89V
2.97V to 3.45V

1.8V or 3.3V

ICP-20100

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

VDD

1.62V to 1.98V

2.97V to 3.63V

1.8V or 3.3V

Not specified

250uA

VDDIO

1.08V to 1.32V

1.62V to 1.98V

2.97V to 3.83V

1.2V or 1.8V or 3.3V

ICM-42688-P

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

VDD

1.71V to 3.6V

1.8V

Not specified

0.88mA

VDDIO

1.71V to 3.6V

1.8V

MLX90393SLW-ABA-011-RE

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

VDD

2.2V to 3.6V

3V

Not specified

<10mA

VDDIO

1.65V to VDD

1.8V

PAA3905E1-Q

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

VDD

1.8V to 2.0V

1.9V

See datasheet

See datasheet

VDDIO

1.8V to 3.6V

1.9V

STM32L4P5CE

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

Power Rail

Voltage Range

Voltage Typ

Voltage Ripple

Current

VDD

1.71V to 3.6V

Not specified

Not specified

Max 200mA into all VDD rails.

Max 100mA into any individual VDD rail.

VDD12

1.14V to 1.32V

VDDIO2

1.08V to 3.6V

VDDA

2.4V to 3.6V

VBAT

1.55V to 3.6V

VDDUSB

3.0V to 3.6V

VIN

-0.3V to MIN(VDD, VDDA, VDDIO2, VDDUSB)+3.6 V and 5.5V

Required Voltage Levels

8.5V @ 18mA

https://www.digikey.ca/en/products/detail/microchip-technology/MIC2619YD6-TR/2242454

3.3V @ ~200mA

https://www.digikey.ca/en/products/detail/analog-devices-inc/ADP323ACPZ-R7/2507288

1.9V @ ~100mA

https://www.digikey.ca/en/products/detail/analog-devices-inc/ADP323ACPZ-R7/2507288

1.8V @ ~200mA

https://www.digikey.ca/en/products/detail/analog-devices-inc/ADP323ACPZ-R7/2507288

-11V @ 2mA

https://www.digikey.ca/en/products/detail/texas-instruments/TPS63700DRCR/1672393

MIC2619YD6-TR 8.5V

image-20240715-060430.png
image-20240715-060142.png
Vref = 1.265V, Vout = 8.5V

Choose R4 = 154k, R5 = 27k

 

Choose R1 = 110k, R2 = 18k

Choose L = 22uH

https://www.digikey.ca/en/products/detail/taiyo-yuden/CBL2012T220M/957989

Use SL03 diode from Vishay for switching Schottky diode

https://www.digikey.com/en/products/detail/vishay-general-semiconductor-diodes-division/SL03-GS08/2345108

For Inductor, use https://www.ti.com/lit/an/slva372d/slva372d.pdf?ts=1720241540731 for calculations

 

TPS63700DRCR -11V

 

Vout = -11V

Vref = 1.213V

R2 = 127kOhm

R3 = 1150kOhm

 

Vin = 5V

Vout = -11V

f = 1.4MHz

L = 10uH

deltaI = 245mA pk-pk

 

For input capacitor:

Use 2*10uF, 1uF and 100nF

For output capacitor

 

f = 1.4MHz, deltaV = 15mV, Iout = 10mA, Vin = 5V, Vout = -11V

Cmin = 0.33uF

Use one 10uF + 1uF to be safe

Add 10pF feedforward cap with 100kOhm in series to boost controller speed

Add 4.7nF cap to comp pin

Use SL03 diode from Vishay for switching Schottky diode

ADP323ACPZ-R7 3V3, 1V9, 1V8

 

Concern with 200mA rated current of LDO for MCU + 100mA from Radar.

Tj = 25C + ((0.34W+0.32W)*49.5C/W) = 57.67C

Junction temp limit is 125C, other sources consume minimal current. Thermal is not a concern for this regulator.

Datasheet recommends at 1uF effective CIN and COUT

For feedback divider:

For Vout1, set R1 to 56kOhm and R2 to 10kOhm

For Vout2, set R3 to 133kOhm and R4 to 51kOhm

For Vout3, set R5 to 56kOhm and R6 to 20kOhm

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