PIFE32251B-R68MS datasheet(26/157 Pages) TI1

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TPS650830

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

VR1_Force PWM time (deglitch

time) during CCM to DCM

transition

PWM is forced for 16 switching cycles

before PFM is enabled turning off the low-

side power MOSFET. Low-side FET

current during each cycle must fall below

the PFM current comparator valley

threshold. Forced PWM allows a fast

transient response and smaller output

voltage ripple during the transition.

cycles

VR1_Force PWM time during DVS

ramp down (enter DVS)

PWM is forced during DVS enter, ramp

down, and until 10 µs after the internal

reference has stepped down to the final

voltage setting. Forced PWM allows a fast

transient response and smaller output

voltage ripple during the transition.

ramp-

down +

ramp-

down +

ramp-

down +

μs

VR1_Force PWM time during DVS

ramp up (exit DVS)

PWM is forced during DVS exit, ramp up,

and until 10 µs after the internal reference

has stepped up to the final voltage

setting. Forced PWM allows a fast

transient response and smaller output

voltage ripple during the transition.

ramp-

up + 9

ramp-

up + 10

ramp-

up + 11

μs

Overtemperature protection

130

145

160

°C

Overtemperature hysteresis

°C

VR2 Converter POWER

VVINVR2 power input voltage -

Parametric and functional

VVINVR2 voltage range, VVIN = 5.4 V to 21

3.135

3.3

3.465

VVINVR2 power input voltage -

Functional

VVINVR2 voltage range, VVIN = 5.4 V to 24

2.97

3.3

3.63

Output voltage

Power save mode disabled ((STANDBYZ

(SLP_S0#) = X) and (V18ACNT[7:4] =

4'b0000))

1.854

Output voltage

Power save mode disabled (STANDBYZ

((SLP_S0#) = X) and (V18ACNT[7:4] =

4'b0001))

1.836

Output voltage - Default

Power save mode disabled (STANDBYZ

((SLP_S0#) X) and (V18ACNT[7:4] =

4'b0010)) (DEFAULT)

1.8

Output voltage

Power save mode disabled ((STANDBYZ

(SLP_S0#) = X) and (V18ACNT[7:4] =

4'b0011 ))

1.764

Output voltage

Power save mode enabled, (STANDBYZ

(SLP_S0#) = L) and (V18ACNT[7:4] =

4'b01XX))

1.728

Output voltage

Power save mode enabled, ((STANDBYZ

(SLP_S0#) = L) and (V18ACNT[7:4] =

4'b10XX))

1.746

Output voltage

Power save mode enabled, ((STANDBYZ

(SLP_S0#) = L) and (V18ACNT[7:4] =

4'b11XX))

1.764

Maximum average output current

range

VVINVR2 = 2.97 V to 3.63 V

2500

Ripple current range

VVINVR2 = 2.97 V to 3.63 V

325

1110

Low side valley cycle by cycle

positive current limit

VVINVR2 = 2.97 V to 3.63 V

2260

3360

Low side valley cycle by cycle

negative current limit

VVINVR2 = 2.97 V to 3.63 V

1400

1875

PFM valley current threshold

VVINVR2 = 2.97 V to 3.63 V

125

High side switch on resistance

VVINVR2 = 3.3 V, 100% duty cycle

105

mΩ

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