UCC28056CDBVT datasheet(8/53 Pages) TI1

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UCC28056

SLUSD37C – OCTOBER 2017 – REVISED FEBRUARY 2018

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Electrical Characteristics (continued)

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TDCHMax0

Max duration of TDCHb state if no ZCD

signal detected. After no OCPx Events

(1)

250

µS

TDCHMax1

Max duration of TDCHb state if no ZCD

signal detected. After one OCPx

Events (1)

500

µS

TDCHMax2

Max duration of TDCHb state if no ZCD

signal detected. After two consecutive

OCPx Events (1)

1000

µS

Output Over-Voltage Protection

VOSOovp1Rise

VOSNS over-voltage threshold, rising

VCC=12V

2.69

2.75

2.81

VOSOovp1Fall

VOSNS over-voltage threshold, falling

VCC=12V

2.60

2.675

2.73

VOSOovp1Hyst

VOSOovp1Rise - VOSOovp1Fall

(1)

0.072

TOvp2Blk

Ovp2 Comparator output is blanked

for this period after falling edge of

DRV (1)

520

620

720

TOvp2bEn

Ovp2b fault is detected ZCD is

detected during this period after falling

edge of Ovp3 Comparator output (1)

620

720

820

VOvp2Th

Second level output over-voltage fault

Threshold

1.102

1.125

1.148

Thermal Protection

TTSDRise

Thermal Shutdown Rising Threshold

(1)

While switching

135

145

155

°C

TTSDFall

Thermal Shutdown Falling Threshold

(1)

While not switching

105

115

°C

TTSDHyst

TTSDRise - TTSDFall

(1)

°C

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