AD405-00017-1v0-E

Spansion® Programmable 2ch Buck + 1ch Buck-Boost
DC/DC Converter with I 2C Interface
S6AP412A / S6AP413A
description
specification
Spansion’s S6AP412A and S6AP413A are programmable power
management ICs consisting of 2- or 3-channel buck DC/DC converter and
1-channel buck-boost DC/DC converter. S6AP412A has 2-channel buck
DC/DC converter and S6AP413A has 3-channel. Utilizing I2C, the output
voltage/soft-start time/on-off of output are controlled easily. The power
design can be changed by software without re-designing the PCB. Each
channel has power-good function, so the setting of the start-shutdown
sequence of power line with hardware is also possible. Small and lowheight inductor is applicable by 3MHz switching frequency and PCB area
can be reduced. This IC is suitable for the system required for three power
supplies and supports DSV and ASV control using an I2C interface. Highperformance processing is realized by dynamically controlling the powersupply voltage of the latest SoC that uses advanced processes, thereby
enabling a reduction in system power consumption.
•
Operating voltage range: +2.5V to 5.5V
(Absolute maximum input voltage: 6.5V)
•
Output voltage range/maximum output current
-S6AP412A
DC/DC1 [Buck]: 0.7 to 1.32V (20mVstep)/4.0A (DC)
DC/DC2 [Buck]: 1.2V to 1.95V (50mVstep)/1.2A (DC)
DC/DC3 [Buck-Boost]: 2.8V to 3.5V (100mVstep)/0.6A (DC)
-S6AP413A
DC/DC1 [Buck]: 0.7 to 1.32V (20mVstep)/2.0A (DC)
DC/DC2 [Buck]: 1.2V to 1.95V (50mVstep)/1.2A (DC)
DC/DC3 [Buck-Boost]: 2.8V to 3.5V (100mVstep)/0.6A (DC)
DC/DC4 [Buck]: 0.7V to 1.32V (20mVstep)/2.0A (DC)
Note: each channel has selectable preset voltage
application
•
Adjustable soft-start time range: 1ms to 16ms (1ms step)
•
DC/DC operating frequency: 3MHz
(Inductor size: 3.2mm × 2.5mm × 1.0mm)
•
Office automation: MFP, Printer, Scanner
•
Network devices: Surveillance camera, Telecommunications, Set top box,
•
I2C interface
Wi-Fi tuner
•
Selectable automatic PFM/PWM mode or PWM-fixed mode
•
Factory automation: Test & measurement, Machine vision
•
PKG: QFN-32 5.0mm×5.0mm×0.71mm (pin pitch 0.5mm)
•
Power supply for FPGA, ASSP and ASIC
easy design squence
5.0V
1.0V
application block diagram
S6AP
412A
5V, 3.3V power line
Li-ion battery (1cell)
1.0V / 4.0A (Buck)
3ch DC/DC
[S6AP412A]
1.5V / 1.2A (Buck)
3.3V / 0.6A (Buck-boost)
1.5V
DDR3
FPGA / ASIC / ASSP
VCC_CORE
VCC_DDR
VCC_IO
DDR3
Peripheral
(Flash, MCU, HDMI)
FPGA
I2C
3.3V
MCU
FLASH
3.3V
1.5V
1.0V
Incorporating a minor change in the microcontroller firmware, you can
change the system parameters (output voltage, start-up sequence) instead of
redesigning the PCB. Utilize hard-pin or I2C for desired start-up sequence.
typical application
VCC
VCC
S6AP413A
S6AP412A
PVCC1A
PVCC1B
PVCC2
PVCC3
IN1
LX1A
PGND1A
LX1B
PGND1B
AVCC
LX2
IN2
PGND2
CTL1
CTL2
CTL3
MODE
CTLMAIN
DVCC
SCL
SDA
ADDSEL
LX3-1
LX3-2
VO3
IN3
PGND3
VREF18
VOUT1
VOUT2
LX1
IN1
PGND1
AVCC
PGND4
VOUT1
VOUT4
LX4
IN4
VOUT2
LX2
IN2
PGND2
CTL1
CTL2
CTL3
CTL4
VOUT3
LX3-1
VOUT3
LX3-2
VO3
PGND3
CTLMAIN
DVCC
SCL
SDA
PG 1
PG2
PG3
GND
PVCC1
PVCC4
PVCC2
PVCC3
VREF18
PG 1
PG2
PG3
PG4
GND
External parts: approximately 5pcs/ch (S6AP412A 16pcs, S6AP413A 18pcs)
EFFICIENCY (S6AP412A DC/DC1)
OUTPUT VOLTAGE SETTING
Input voltage = 3.3V, Vo = 1.2V setting
90
PFM
operation
80
Efficiency [%]
Output voltage range (I2Csetting)
2phase
operation
100
70
60
DC/DC1, 4(∗1)
DC/DC2
DC/DC3
0.70V to 1.32V
(20mV step)
1.2V to 1.95V
(50mV step)
2.8V to 3.5V
(100mV step)
1phase
operation
50
Selective preset voltage(∗2)
40
30
20
Fixed PWM
10
0
0.00001
PFM/PWM
0.001
0.1
Load current [A]
10
Keep high efficiency in wide range load current condition by
automatic transition to optimum operation mode.
DC/DC1, 4(∗1)
DC/DC2
DC/DC3
0.90V
1.20V
2.80V
1.00V
1.35V
3.00V
1.10V
1.50V
3.30V
1.20V
1.80V
3.50V
1: DC/DC4 is included S6AP413A only.
∗
2: Output voltage is set at factory.
Preset voltage is discriminated by part number suffix.
∗
evaluation kit and online simulation service
Block diagram of evaluation kit using I2Ccommunication
S6AP412A EVB
S6AP412A
S6AP413A
I2C
MCU FM3
MB9AF312K
USB
VBA(GUI)
IC
2
3.3V(LDO)
MCU Power
CTL signal Input
PG signal Output
Power Line
Data Line
Power Supply
Reference design board and I2C communication board is available.
Web Design Simulation Service
http://www.spansion.com/easydesignsim/
Spansion: 915 DeGuigne Drive, PO Box 3453, Sunnyvale, CA 94088-3453 USA
+1 (408) 962-2500 | 1 866 SPANSION | www.spansion.com
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are trademarks and registered trademarks of Spansion LLC in the United States and other countries. Other names used
are for informational purposes only and may be trademarks of their respective owners.
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AD405-00017-1v0-E, January 2015
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