AM335x Power Solutions

Sitara AM335x Power Solutions
January 2014
1
AM335x Power Solutions
Feature
Power (DCDC/LDO)
Other features
Charger
RTC
Voltage Range
TPS650250
TPS65217
TPS65910
3 DCDC / 3 LDO
3 DCDC / 2+2 LDOs
3 DCDC / 9 LDO
• Power-fail comparator
No
Linear w/ Power-Path
• 5V boost (100mA)
• 2 x I2C interface
No
NO
NO
YES
Requires external LDO
LDO to power AM335x RTC
Coin-cell input for RTC backup
2.75..5.5V
2.7...5.5V
2.5..6.0V
20V tolerant
DynamicVoltageScaling
NO
Supervisor
Power sequencing
• WLED driver
• 2LDO can be configured
as load switches.
• I2C interface
YES
YES
300/600/720/800/1000MHz
300/600/720/800/1000MHz
NO
NO
NO
NO
YES
YES
Requires external enable circuit
Temperature range
-40..85C / -40..125 (Q1)
-40..105C
-40..85C
Memory support
LPDDR1, DDR2, DDR3
LPDDR1,DDR2,
DDR3(L)(RS)
LPDDR1/DDR2, DDR3
32 pin QFN
5x5mm2, 0.5mm pitch
48pin QFN
6x6mm2, 0.4mm pitch
48pin QFN
6x6mm2, 0.4mm pitch
In production
In production
In production
Package
Status
2
TPS650250
Features
•
2.5V to 6.0V input voltage range
–
•
Ideal for single cell Li+ batteries
Three step-down converters
–
–
–
1x1.6A, adjustable output
2x0.8A, adjustable output
2.25MHz switching frequency
•
Two adjustable LDOs
•
One keep-alive LDO
–
–
200mA, 0.9-1.8V adjustable output
30mA, 1.0V fixed output
•
Power-Fail comparator
•
Separate enable pins for DCDCs and LDOs
•
85uA quiescent current
•
32 pin 5x5mm QFN w/ 0.5mm pitch
•
Also available as Q100 w/ -40..125C
temperature range.
Bennefits
•
•
•
•
Low-cost solution
Extended temperature range
Available in 0.5mm pitch package
Reference design available at
http://www.ti.com/tool/pr1067.1
3
TPS65217
Features
4.7mF
•
•
•
2.7V to 5.8V input voltage range
2A, Dual Input Power Path
Linear Charger with supplement mode
–
•
•
MUX_OUT
MUX
100nF
from system
500mW (max) impedance
Switches can be configured as LDOs (1.8V-6.0V
output voltage range)
Bennefits
Lin Charger &
Power Path
MGMT
MUX_IN
BAT
Single cell
Li+ Battery
Q2
BAT_SENSE
TEMP SENSE
BIAS
BYPASS
10mF
TS
NTC
10mF
VIO
I/O Voltage
PWR_EN
from system host / uC
PGOOD
Always-on
supply
Momentatary Push Button
to system host / uC
LDO_PGOOD
to system host / uC
100k
PB_IN
DIGITAL
100k
VIO (always on)
nWAKEUP
to system host / uC
Always-on
supply
100k
from system host / uC
VIO (always on)
nINT
100k
nRESET
to system host / uC
10mF
VIO
SCL
from system host / uC
VIO
SDA
from system host / uC
VIN_DCDC1
SYS
I2C
L4
SYS
Supports two strings of up to 10LEDs @ 25mA each
Extended temperature range of -40..105C
I2C interface
6x6mm QFN w/ 0.4mm pitch
VBAT
VSYS
VICHARGE
VTS
INT_LDO
100nF
100mA, 0.9-1.8V adjustable output
WLED driver
–
•
•
•
4.7mF
to system host / uC
Two 500mW load switches / LDOs
–
–
to system load
Q1
22mF
Two adjustable LDOs
–
•
1.2A, 0.9V-3.3V adjustable output
2.25MHz switching frequency
SYS
Q1
USB
from USB connector
Three step-down converters
–
–
•
700mA max charge current
AC
from USB connector
DCDC1
L1
VDCDC1
to system
10mF
10mF
FB_WLED
4.7mF
Up to 2x 10 LEDs
VIN_DCDC2
WLED
Driver
ISINK1
ISINK2
ISET1
ISET2
DCDC2
SYS
L2
VDCDC2
to system
10mF
10mF
VIN_DCDC3
DCDC3
4.7uF
L3
VDCDC3
SYS
to system
10mF
VINDO
SYS
VLDO1
to system
LS1_IN
LDO1
from 1.8V-5.8V supply
2.2uF
•
•
•
VLDO2
to system
LDO2
LS1_OUT
to system load
10mF
2.2uF
LS2_IN
LOAD SW2 /
LDO4
from 1.8V-5.8V supply
LS2_OUT
to system load
10mF
AGND
PGND
Compact power solution for portable systems
Extended temperature range
Reference design available at
http://www.ti.com/litv/pdf/slvu551f
LOAD SW1/
LDO3
4
TPS65910
Features
•
•
2.7V to 5.5V input voltage range
Three step-down converters
–
–
–
•
One step-up converter
–
–
•
20mA 1.8V
Internal power-path for coin-cell backup battery
RTC
–
–
•
•
4x300mA + 4x150mA
Output voltage range 1.2V-3.3V
One RTC LDOs
–
–
•
100mA, 5V fixed output (VDD3)
1MHz switching frequency
8 adjustable LDOs
–
–
•
1.5A, 0.6V-1.5V adjustable output (VDD1,2)
1.0A, 1.5/1.8/2.5/3.3V (VIO)
3MHz switching frequency
32kHz crystal oscillator
Date, time , and calendar
I2C interface
48pin, 6x6mm QFN w/ 0.4mm pitch
Bennefits
•
•
Compact solution for portable systems w/
external charger or non-portable systems.
Reference design available at
http://www.ti.com/litv/pdf/swca089a
5
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