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O9039A385IZWSRQ1 Automotive Power Management Unit (PMU) for Processor TI
Texas Instruments TI
O9039A385IZWSRQ1 Datasheet PDF : 109 Pages
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TPS659038-Q1, TPS659039-Q1
SWCS095K – AUGUST 2013 – REVISED JANUARY 2018
Voltage control through I2C (SMPS*_CTRL.ROOF_FLOOR_EN=0)
SMPS*_VOLTAGE.VSEL, when SMPS*_FORCE.CMD=1
SMPS*_FORCE.VSEL, when SMPS*_FORCE.CMD=0
SMPS*_OUT
SMPS*_VOLTA GE.VSEL
Discharge control (pull-down)
SMPS_PD_CTRL.SMPS*
(disabled or enabled)
Tstart
I2C
VSEL[6:0] (voltage selection): OFF, 0.5 V - 1.65 V in 10-mV steps if SMPS*_VOLTAGE.RANGE = 0; 1 - 3.3 V in 20-mV steps
if SMPS*_VOLTAGE.RANGE = 1
I2C: Control through access to SMPS*_VOLTAGE, SMPS*_FORCE registers
Voltage control through external pin (SMPS*_CTRL.ROOF_FLOOR_EN=1)
SMPS*_VOLTAGE.VSEL (ACTIVE mode)
SMPS*_FORCE.VSEL (SLEEP mode)
SMPS*_VOLTAGE.VSEL
SMPS*_OUT
Discharge control (pull-down)
SMPS_PD_CTRL.SMPS*
(disabled or enabled)
Tstart
EN
EN: Control through NSLEEP or ENABLE1 (see Resources SLEEP or ACTIVE assignments table)
Figure 6-5. DVS – SMPS Controls
6.3.2.1.6 Non DVS-Capable Regulators
SMPS3 and SMPS7, when they are not part of the multi-phase configuration, will work as single phase
step down converters. Together with SMPS9, these are non-DVS-Capable regulators. The output voltage
slew rate is not controlled internally, and the converter will achieve the new output voltage in JUMP mode.
It is recommended that when changes to output voltage is necessary while SMPS3, SMPS7, or SMPS9
are configured as single phase converters, that the changes to their output voltages are programmed at a
rate which is slower than 2.5 mV/μs to avoid voltage overshoot or undershoot.
6.3.2.1.7 Step-Down Converters SMPS12 and SMPS123
The step-down converters SMPS1, SMPS2, and SMPS3 can be used in two different configurations:
• SMPS12 in dual-phase configuration supporting 6-A load current and SMPS3 in single-phase
configuration supporting 3-A load current
• SMPS123 in triple-phase configuration supporting 9-A load current
SMPS1 and SMPS2 cannot be used as separate converters. In dual-phase configuration the two
interleaved synchronous buck regulator phases with built-in current sharing operate in opposite phase. In
triple-phase configuration the three interleaved synchronous buck regulator phases with built-in current
sharing operate 120° out of phase. For light loads, the converter automatically changes to 1-phase
operation.
Figure 6-6 shows the connections for dual-phase and triple-phase configurations.
Copyright © 2013–2018, Texas Instruments Incorporated
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Product Folder Links: TPS659038-Q1 TPS659039-Q1
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