Datasheet

UCC28063
SLUSAO7 – SEPTEMBER 2011 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At VCC = 16 V, AGND = PGND = 0 V, VINAC = 3 V, VSENSE = 6 V, HVSEN = 3 V, PHB = 5 V, R
TSET
= 133 kΩ, all voltages
are with respect to GND, all outputs unloaded, −40°C < T
J
= T
A
< 125°C, and currents are positive into and negative out of
the specified terminal, unless otherwise noted.
PARAMETER TEST CONDITION MIN TYP MAX UNIT
Soft Start
V
SSTHR
COMP Soft-Start threshold, VSENSE = 1.5 V
15 23 30 mV
falling
I
SS,FAST
COMP Soft-Start current, fast SS-state, V
ENAB
< VSENSE < VREF/2 −80 −125 −170
µA
I
SS,SLOW
COMP Soft-Start current, slow SS-state, VREF/2 < VSENSE < 0.88VREF −11.5 −16 −20
K
EOSS
VSENSE End-of-Soft-Start Percent of VSENSEreg
96.5% 98.3% 99.8%
threshold factor
Output Monitoring
V
PWMCNTL
HVSEN threshold to PWMCNTL HVSEN rising 2.35 2.50 2.65 V
I
HVSEN
HVSEN input bias current, high HVSEN = 3 V ±0.03 ±0.5
µA
I
HV_HYS
HVSEN hysteresis bias current, HVSEN = 2 V
9.2 11.4 14.0
low
V
HV_OV_FLT
HVSEN threshold to HVSEN rising
4.64 4.87 5.10
over-voltage fault
V
HV_OV_CLR
HVSEN threshold to HVSEN falling
4.45 4.67 4.80
over-voltage clear
V
COMP_PHFOFF
Phase Fail monitoring-disable COMP falling
0.21 0.225 0.25 V
threshold
V
COMP_PHFHYS
Phase Fail monitoring COMP rising
0.051
hysteresis
PWMCNTL output voltage low HVSEN = 3 V, I
PWMCNTL
= 5 mA,
0.2 0.5
COMP = 0 V
t
PHFDLY
Phase Fail filter time to PHB = 5 V, ZCDA switching,
7.9 12 17 ms
PWMCNTL high ZCDB = 0.5 V, COMP = 3 V
I
PWMCNTL_LEAK
PWMCNTL leakage current, HVSEN = 2 V, PWMCNTL = 15 V
±0.03 ±0.5 µA
high
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