IR21592/IR21593
(
S
)
&
(
PbF
)
www.irf.com 5
Electrical Characteristics (cont.)
V
CC
= V
BS
= V
BIAS
= 14V +/- 0.25V, V
CS
= 0.5V, V
SD
= 0.0V, R
FMIN
= 40k, C
VCO
= 10 nF, V
DIM
= 0.0V, R
MAX
= 33k,
R
MIN
= 56k, V
TPH
= 0.0V, C
LO,HO
= 1000pF, T
A
= 25
o
C unless otherwise specified.
Symbol Definition Min. Typ. Max. Units Test Conditions
V
FMIN
FMIN pin voltage during normal operation 4.6 5.1 6.25 V VMIN=1.5V,VIPH=0.5V
V
FMINFLT
FMIN pin voltage during fault mode — 0.0 — V
SD = 5V, or CS = 2V,
or Tj
> TSD
Minimum Frequency Setting
V
SDTH+
Rising shutdown pin threshold voltage 1.6 2.0 2.6
VCPH =VIPH=0V
V
CSTH
Peak over current threshold 1.2
1.6
1.9 VCPH < 5V
V
VDCTH+
Rising VDC pin threshold voltage — 5.1 — VCPH=VCS=VSD=0V
V
SDHYS
SD threshold hysteresis — 150 — mV
VCPH =VIPH=0V
V
VDCHYS
VDC threshold hysteresis — 2.1 — VCPH=VCS=VSD=0V
V
SDCLMP
SD pin clamp voltage — 7.6 — ISD = 100mA
T
SD
Thermal shutdown junction temperature —
165 —
o
C
Protection Characteristics
V
V
V
CSTHZX
Zero-crossing threshold voltage — 0.0 — V
VCPH =5.5V,VIPH=0.5V
t
Blank
Zero-crossing internal blank time 291 400 1030 ns VCPH =5.5V,VIPH=0.5V
Phase Control
V
DIMOFF
DIM pin offset voltage — 0.5 —
V
MINMIN
DIM minimum reference voltage (MIN pin) — 1.0 —
VCPH=5.5V,VIPH=0.5V
V
MINMAX
DIM maximum reference voltage (MIN pin)
—
3.0
—
VCPH =0.5V,VIPH=0.5V
Dimming Interface
V
Preheat Characteristics
ICPH CPH pin charging current 0.8 1.3 2.1 µA VCPH=VDIM=4.7V,
VCS=1.0V
V
CPHIGN CPH pin ignition mode threshold voltage 4.3 5.0 5.7 VCS=2.0V
VCPHCLMP CPH pin clamp voltage — 10 —
VCS=VDIM=VIPH=0V
IIPH IPH pin DC source current
—25—
µA
VCPH=VDIM=4.7V,
IIPH=1/RFMIN
VCSTHPH Peak preheat current regulation threshold
— 0.7 —
V RIPH=27K, VMIN=0V,
VCPH=0V, VCSTH =
(IIPH) x (RIPH)
VCPHFLT CPH pin voltage during UVLO or fault — 0.0 —
V SD = 5V, or CS = 2V,
or Tj
> TSD
V
Ignition Detection
I
IPHIGN+
IPH source current (Vcs rising) —
30
—
VCS=0V, RIPH=18K,
VCPH>5.1V
I
IPHIGN-
IPH source current (Vcs falling) — 27.5 —
VCS =1.0V,
VCPH>5.1V
µA
