PIFE32251B-R68MS datasheet(31/157 Pages) TI1

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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

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

DVS slew rate for falling edge

DVS falling edge slew rate for VVOUT to

change from the upper target to the lower

target after STANDBYZ (SLP_S0#)

changes from High to Low. Total ramp

time = ((Vout_high - Vout_low) /

slew_rate)

4.5

5.5

mV / μs

DVS total rise time (delay time +

output ramp-rise time)

Time to start switching from enable to

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

slope reversal).

61.25

68.5

μs

DVS delay time for rising edge

DVS delay time from when STANDBYZ

(SLP_S0#) changes from Low to High,

until the output voltage begins to rise.

1.25

1.5

μs

DVS ramp time for rising edge

From first switching pulse to 95% of

VO(Min), Continuous slope (no slope

reversal). Total ramp time = ((Vout_high -

Vout_low) / slew_rate). For Vout change

= 300 mV

μs

DVS slew rate for rising edge

DVS rising edge slew rate for VVOUT to

change from the lower target to the upper

target after STANDBYZ (SLP_S0#)

changes from Low to High. Total ramp

time = ((Vout_high - Vout_low) /

slew_rate).

4.5

5.5

mV / μs

Decay exit Total turn-on time

(delay time + output ramp-up time)

Time to start switching from enable to

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

slope reversal).

μs

Decay exit delay time for rising

edge

Decay delay time from when STANDBYZ

(SLP_S0#) changes from Low to High,

until the output voltage begins to rise.

μs

Decay exit ramp time for rising

edge

From first switching pulse to 95% of

VO(Min), Continuous slope (no slope

reversal). Total ramp time = ((Vout_high -

0V) / slew_rate). For Vout target = 0.95.

μs

Decay exit slew rate for rising

edge

Decay rising edge slew rate for VVOUT to

change from the lower target to the upper

target after STANDBYZ (SLP_S0#)

changes from Low to High. Total ramp

time = ((Vout_high - 0 V) / slew_rate).

mV / μs

VR3 Controller MOSFET Drivers

DRVH resistance

Source, IDRVH = -50 mA

3.0

4.5

DRVH resistance

Sink, IDRVH = 50 mA

2.0

3.5

DRVL resistance

Source, IDRVL = -50 mA

3.0

4.5

DRVL resistance

Sink, IDRVL = 50 mA

0.8

2.0

Dead time

DRVH - off to DRVL - on

Dead time

DRVL - off to DRVH - on

High-side driver minimum on-time

DRVH - on

105

High-side driver minimum off-time

DRVH - off

235

260

285

VR3 Controller OUTPUT DISCHARGE

Output auto discharge resistance

Discharge register value: 00, Default

1000

kΩ

Output auto discharge resistance

Discharge register value: 01

125

160

Output auto discharge resistance

Discharge register value: 10

170

225

315

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