NXP Semiconductors
PF4210
14-channel power management integrated circuit (PMIC) for audio/video applications
VIN
SW1AIN
SW1AMODE
I
SENSE
C
INSW1A
CONTROLLER
L
SW1A
SW1A/B
SW1ALX
DRIVER
SW1AFAULT
C
OSW1A
INTERNAL
COMPENSATION
Z2
I2C
SW1FB
Z1
EA
V
REF
DAC
VIN
SW1BIN
SW1BMODE
I
SENSE
C
INSW1B
2
I C
CONTROLLER
INTERFACE
SW1BLX
SW1CIN
DRIVER
SW1BFAULT
SW1CMODE
VIN
I
SENSE
C
INSW1C
CONTROLLER
L
SW1C
SW1C
SW1CLX
EP
DRIVER
SW1CFAULT
C
OSW1A
INTERNAL
COMPENSATION
Z2
I2C
SW1CFB
Z1
EA
V
REF
DAC
aaa-026480
Figure 11.ꢀSW1A/B single phase, SW1C independent mode block diagram
Both SW1ALX and SW1BLX nodes operate at the same DVS, frequency, and phase
configured by the SW1ABCONF register, while SW1CLX node operates independently,
using the configuration in the SW1CCONF register.
10.4.4.3.3 SW1A/B dual phase - SW1C independent mode
In this mode, SW1A/B is connected in dual phase mode using one inductor per switching
node, while SW1C is used as an independent output using its own inductor and
configuration parameters. This mode provides a smaller output voltage ripple on the
SW1A/B output. SW1A/B and SW1C operate independently from one another, thus, they
can be operated with a different voltage set point for normal, standby, and sleep modes,
as well as switching mode selection and on/off control. Figure 12 shows the physical
connection for SW1A/B in dual phase and SW1C as an independent output.
PF4210
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© NXP B.V. 2018. All rights reserved.
Data sheet: technical data
Rev. 2.0 — 14 November 2018
40 / 137
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