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TPS62870 Datasheet(PDF) 21 Page - Texas Instruments

Part # TPS62870
Description  TPS6287x 2.7V to 6V Input, 6A, 9A, 12A, 15A, Fast Transient Stackable Synchronous Step-Down Converters With I2C Interface and Remote Sense
PDF  66 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

TPS62870 Datasheet(HTML) 21 Page - Texas Instruments

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Undefined
VIT+(UVLO)
VIN
EN
VOUT
ttd(EN)1t
ttd(RAMP)t
PG
EN pin pulled
low internally
Device initialization
complete
td(PG)
Figure 7-7. Start-Up Timing When EN is Pulled Up to VIN
Figure 7-8 shows the start-up sequence when an external signal is connected to the EN pin.
Undefined
VIT+(UVLO)
VIN
VIT+(EN)
EN
VOUT
ttd(EN)2t
ttd(RAMP)t
PG
Device initialization
complete
td(PG)
Figure 7-8. Start-Up Timing When an External Signal is Connected to the EN Pin
The SSTIME[1:0] bits in the CONTROL2 register select the duration of the soft-start ramp:
• td(RAMP) = 500μs
• td(RAMP) = 1ms (default)
• td(RAMP) = 2ms
• td(RAMP) = 4ms
The device ignores new values until the soft-start sequence is complete if the user programs the following when
the device soft-start sequence has already started:
• A new output voltage setpoint (VSET[7:0])
• An output voltage range (VRANGE[1:0])
• Soft-start time (SSTIME[1:0]) settings
If the user change the value of VSET[7:0] during soft start, the device first ramps to the value that VSET[7:0] had
when the soft-start sequence began. Then, when soft start is complete, the device ramps up or down to the new
value.
www.ti.com
TPS62870, TPS62871, TPS62872, TPS62873
SLVSGC5E – JANUARY 2023 – REVISED OCTOBER 2025
Copyright © 2025 Texas Instruments Incorporated
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Product Folder Links: TPS62870 TPS62871 TPS62872 TPS62873



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