PIFE32251B-R68MS datasheet(27/157 Pages) TI1

27 / 157 page

TPS650830

www.ti.com

SLVSCF4A – DECEMBER 2014 – REVISED JULY 2016

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Specifications

Electrical Characteristics (continued)

Over recommended free-air temperature range and over recommended input voltage range (typical at an ambient

temperature range of 25°C) (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Low side switch on resistance

VVINVR2 = 3.3 V, 0% duty cycle

mΩ

Maximum line regulation with

respect to nominal Vout

ULQ/Auto Mode, VVINVR2 = 2.97 V to 3.63

V, IOUT = Imax, ALL VOUTS, Measured at

the regulation point output capacitor with

Kelvin connections made directly from the

regulation point to the differential

feedback pins (FBVR2P - FBVR2N).

-0.5%

0.5%

Maximum load regulation - PWM

Mode with respect to nominal Vout

ULQ/Auto Mode, VVINVR2 = 2.97 V to 3.63

V, IOUT = 0 A to Imax, ALL VOUTS,

Measured at the regulation point output

capacitor with Kelvin connections made

directly from the regulation point to the

differential feedback pins (FBVR2P -

FBVR2N).

-0.5%

0.5%

Maximum load regulation - AUTO

Mode with respect to nominal Vout

ULQ/Auto Mode, VVINVR2 = 2.97 V to 3.63

V, IOUT = 0 A to Imax, ALL VOUTS,

Measured at the regulation point output

capacitor with Kelvin connections made

directly from the regulation point to the

differential feedback pins (FBVR2P -

FBVR2N).

-0.65%

1.0%

Maximum total output voltage load

transient variation

DC and AC, ULQ/Auto Mode, VVINVR2 =

2.97 V to 3.63 V, IOUT = 0 A to 70% max

load, 70% max load to 0 mA, di/dt = 2.5

A/µs, Measured at the regulation point

output capacitor with Kelvin connections

made directly from the regulation point to

the differential feedback pins (FBVR2P -

FBVR2N).

-5%

DC and AC, ULQ/Auto Mode, VVINVR2 =

2.97 V to 3.63 V, IOUT = 30% max load to

max load, max load to 30% max load,

di/dt = 2.5 A/µs, Measured at the

regulation point output capacitor with

Kelvin connections made directly from the

regulation point to the differential

feedback pins (FBVR2P - FBVR2N).

-5%

Switching frequency

PWM Mode, IOUT = 67% of max output

current

1700

2000

2300

kHz

Soft-Start total turn-on time (start-

up time + output ramp-up time)

Time to start switching from enable to

95% of VO(Min), Continuous slope (no

slope reversal).

730

800

1050

μs

Soft-Start delay time

Delay time from enable to first switching

pulse.

120

135

150

μs

Soft-Start ramp-up time

From first switching pulse to 95% of

VO(Min), Continuous slope (no slope

reversal).

610

665

900

μs

DVS total fall time (delay time +

output ramp-down time)

Time to start switching from enable to 5%

of VO(Min), Continuous slope (no slope

reversal).

61.25

68.5

μs

DVS delay time for falling edge

DVS delay time from when STANDBYZ

(SLP_S0#) changes from High to Low,

until the output voltage begins to fall.

1.25

1.5

μs

DVS ramp time for falling edge

From first switching pulse to 5% of

VO(Min), Continuous slope (no slope

reversal). Total ramp time = ((Vout_high -

Vout_low) / slew_rate). For Vout change

= 300 mV

μs

PIFE32251B-R68MS 데이터시트(PDF) 27 Page - Texas Instruments

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