SUPPLY VOLTAGE |
VCCShort
|
Below this threshold, use reduced start up current |
For UCC256402, UCC256402A, UCC256404, UCC256404A, UCC256404B |
0.3 |
0.5 |
0.8 |
V |
VCCReStartJfet
|
Below this threshold, re-enable JFET. |
For UCC256402, UCC256402A, UCC256404, UCC256404A, UCC256404B |
9.35 |
9.65 |
9.95 |
V |
VCCStartSelf
|
Startup when VCC is above this level |
For UCC256402, UCC256402A, UCC256404, UCC256404A, UCC256404B |
25 |
26 |
28 |
V |
VCCStartSwitching
|
Startup when VCC is above this level |
For UCC256403, UCC256403A |
|
10.9 |
|
V |
VCCUVLOrising
|
VCC under voltage lockout voltage (rising) |
|
7.85 |
8.25 |
8.70 |
V |
VCCUVLOHYS
|
VCC under voltage lockout voltage hysteresis |
|
0.15 |
0.25 |
0.35 |
V |
SUPPLY CURRENT |
ICCSleep
|
Current drawn from VCC rail during burst off period |
|
650 |
780 |
950 |
µA |
ICCRun
|
Current drawn from VCC Pin while gate is switching. Excluding Gate Current |
Dead time = 1 µs maximum dead time |
1.8 |
2.2 |
2.7 |
mA |
REGULATED SUPPLY |
VRVCC
|
Regulated supply voltage |
VCC = 15 V, no load |
12.7 |
13 |
13.45 |
V |
Regulated supply voltage |
VCC = 15 V, 100 mA load |
12.4 |
13 |
13.45 |
V |
Regulated supply voltage |
VCC = 13 V, no load |
12.7 |
12.98 |
|
V |
Regulated supply voltage |
VCC = 13 V, 30 mA load |
12.4 |
12.6 |
|
V |
VRVCCUVLO
|
RVCC under voltage lock out voltage |
|
6.5 |
7 |
7.5 |
V |
HIGH VOLTAGE STARTUP |
IHVLow
|
Reduced startup pin current |
VHV = 20 V, VCC = 0 V |
0.3 |
0.5 |
0.65 |
mA |
IHVHigh
|
Full startup pin current |
VHV = 20 V, VCC = 4 V |
7.6 |
10.20 |
13.5 |
mA |
IHVLeak
|
HV current source leakage current |
VHV = 600 V |
|
1 |
4 |
µA |
IHVZCD
|
Highest AC zero crossing detection test current |
For UCC256404B |
1.0 |
1.3 |
1.6 |
mA |
For UCC256404, UCC256404A |
1.4 |
1.7 |
2.1 |
mA |
IHVZCDStep
|
AC zero crossing detection test current steps |
|
|
0.38 |
|
mA |
IXCAPDischarge
|
X-cap discharge current |
|
8.9 |
11.5 |
13.5 |
mA |
Vzero-crossing
|
HV pin voltage threshold that zero-crossing is detected |
|
8 |
9 |
11 |
V |
tXCAPZCD
|
AC zero crossing detection window length for first three test current stage (1)
|
|
10 |
12 |
14 |
ms |
tXCAPZCDLast
|
AC zero crossing detection window length for final test current stage (1)
|
|
43 |
46 |
52 |
ms |
tXCAPIdle
|
AC zero crossing detection idle period length (1)
|
|
635 |
700 |
772 |
ms |
tXCAPDischarge
|
Time for X-cap discharge current active (1)
|
|
327 |
360 |
390 |
ms |
tXCAPJFETON
|
Time of first X-cap detection after JFETON (1)
|
|
|
12 |
|
ms |
BULK VOLTAGE SENSE |
VBLKStart
|
BLK voltage that allows LLC to start switching |
For UCC256402, UCC256402A, UCC256403, UCC256403A |
2.94 |
3 |
3.06 |
V |
For UCC256404, UCC256404A, UCC256404B |
0.98 |
1 |
1.02 |
V |
VBLKStop
|
BLK voltage that forces LLC operation to stop |
For UCC256402, UCC256402A, UCC256403, UCC256403A |
2.15 |
2.2 |
2.25 |
V |
For UCC256404, UCC256404A, UCC256404B |
0.88 |
0.9 |
0.925 |
V |
VBLKOVPRise
|
BLK over voltage protection rising threshold |
For UCC256402A |
3.92 |
4.0 |
4.08 |
V |
VBLKOVPFall
|
BLK over voltage protection falling threshold |
For UCC256402A |
3.72 |
3.8 |
3.88 |
V |
FEEDBACK PIN |
RFBInternal
|
Internal pull down resistor value |
|
90 |
100 |
110 |
kΩ |
IFB
|
FB internal current source |
For UCC256402, UCC256402A, UCC256404, UCC256404A, UCC256404B |
73 |
82 |
91 |
µA |
For UCC256403, UCC256403A |
147 |
164 |
182 |
µA |
VFB
|
FB pin voltage when FB pin sink current is at (IFB - 50 µA) |
|
|
5.6 |
|
V |
ΔVFB
|
FB pin voltage variation when FB pin sink current ranges from (IFB - 50 µA) to (IFB - 5 µA) |
|
|
0.28 |
|
V |
ΔVclamp
|
FB pin voltage variation when FB pin sink current ranges from (IFB - 5 µA) to (IFB + 5 µA) |
|
|
0.4 |
|
V |
IFBclamp
|
Maximum FB internal current source when FB is clamped |
|
|
82 |
|
μA |
ΔVFBclamp
|
FB pin voltage variation when FB pin sink current ranges from (IFB + 5 µA) to (IFB + IFBClamp - 5 µA) |
|
|
0.25 |
|
V |
f-3dB
|
Feedback chain -3dB cut off frequency (2)
|
|
1 |
|
|
MHz |
RESONANT CURRENT SENSE |
VISNS_OCP1
|
OCP1 threshold |
|
3.9 |
4 |
4.1 |
V |
VISNS_OCP1_SS
|
OCP1 threshold during soft start |
|
4.85 |
5 |
5.15 |
V |
VISNS_OCP2
|
OCP2 threshold |
|
0.57 |
0.6 |
0.63 |
V |
VISNS_OCP3
|
OCP3 threshold |
|
0.40 |
0.43 |
0.46 |
V |
tISNS_OCP2
|
The time the average input current needs to stay above OCP2 threshold before OCP2 is triggered (1)
|
|
|
2 |
|
ms |
tISNS_OCP3
|
The time the average input current needs to stay above OCP3 threshold before OCP3 is triggered (1)
|
|
|
50 |
|
ms |
VIpolarityHyst
|
Resonant current polarity detection hysteresis |
|
16 |
30 |
44 |
mV |
nOCP1
|
Number of OCP1 cycles before OCP1 fault is tripped (1)
|
|
|
4 |
|
|
RESONANT CAPACITOR VOLTAGE SENSE |
VCM
|
Internal common mode voltage |
|
2.90 |
3 |
3.14 |
V |
IRAMP
|
Frequency compensation ramp current source value |
|
1.84 |
2 |
2.16 |
mA |
IMismatch
|
Pull up and pull down ramp current source mismatch (3)
|
|
-1.25 |
|
1.25 |
% |
GATE DRIVER |
VLOL
|
LO output low voltage |
Isink = 20 mA |
0.02 |
0.05 |
0.12 |
V |
VRVCC - VLOH
|
LO output high voltage |
Isource = 20 mA |
0.10 |
0.18 |
0.3 |
V |
VHOL - VHS
|
HO output low voltage |
Isink = 20 mA |
0.02 |
0.05 |
0.12 |
V |
VHB - VHOH
|
HO output high voltage |
Isource = 20 mA |
0.10 |
0.18 |
0.3 |
V |
VHB-HSUVLOFall
|
High side gate driver UVLO falling threshold |
|
6.6 |
7.25 |
7.75 |
V |
VHB-HSUVLOHys
|
High side gate driver UVLO threshold hysteresis |
|
0.78 |
0.9 |
1.05 |
V |
Isource_pk_HO
|
HO peak source current (2)
|
|
|
-0.6 |
|
A |
Isource_pk_LO
|
LO peak source current (2)
|
|
|
-0.6 |
|
A |
Isink_pk_HO
|
HO peak sink current (2)
|
|
|
1.2 |
|
A |
Isink_pk_LO
|
LO peak sink current (2)
|
|
|
1.2 |
|
A |
BOOTSTRAP |
IBOOT_QUIESCENT
|
(HB - HS) quiescent current |
HB - HS = 12 V |
42 |
62 |
80 |
µA |
IBOOT_LEAK
|
HB to GND leakage current |
VHB = 600 V |
|
0.40 |
5.40 |
µA |
tChargeBoot
|
Length of charge boot state |
|
230 |
265 |
300 |
µs |
SOFT START AND BURST MODE |
ISSUp
|
Current output from SS pin to charge up the soft start capacitor |
|
26 |
36 |
45 |
µA |
RSSDown
|
SS pin pull down resistance |
ZCS or OCP1 |
300 |
370 |
450 |
Ω |
tSSInitVolPrgm
|
SS initial voltage programming time (1)
|
|
720 |
776 |
830 |
µs |
RLL
|
LL/SS voltage scaling resistor value |
|
92 |
98 |
106 |
kΩ |
Nburst
|
Minimum number of pulses in each burst packet (including burst soft on/off pulses) |
For UCC256402, UCC256402A, UCC256403A, UCC256404A |
|
16 |
|
|
For UCC256403, UCC256404, UCC256404B |
|
40 |
|
|
Nsoftmax |
Maximum number of pulses for burst soft on/off |
|
|
7 |
|
|
Ksoft |
Minimal ratio of Vcomp/VFBreplica during burst soft on/off |
|
|
0.33 |
|
|
VLLVolPrgm
|
LL pin voltage during the burst mode exit threshold (BMTH) programming |
|
|
3.5 |
|
V |
BMTHmin
|
Minimal burst mode exit threshold |
|
|
0.2 |
|
V |
BMTLmin
|
Minimal burst mode entry threshold |
|
|
0.2 |
|
V |
BIAS WINDING |
VBWOVPos
|
Output voltage OVP - Positive Threshold |
|
3.86 |
4 |
4.12 |
V |
VBWOVNeg
|
Output voltage OVP - Negative Threshold |
|
-4.12 |
-4 |
-3.86 |
V |
nBWOV
|
Number of BW OVP cycles before BW OVP fault is tripped (1)
|
|
|
5 |
|
|
IBWPrgm
|
BW pin sourcing current for BMTL/BMTH programming |
|
51 |
54 |
57 |
µA |
tBWPrgm
|
BMTL/BMTH programming time |
|
|
2 |
|
ms |
KBMTL/BMTH1
|
Ratio of BMTL/BMTH Option 1 |
|
|
0.95 |
|
|
KBMTL/BMTH2
|
Ratio of BMTL/BMTH Option 2 |
|
|
1 |
|
|
KBMTL/BMTH3
|
Ratio of BMTL/BMTH Option 3 |
|
|
0.9 |
|
|
KBMTL/BMTH4
|
Ratio of BMTL/BMTH Option 4 |
|
|
0.8 |
|
|
KBMTL/BMTH5
|
Ratio of BMTL/BMTH Option 5 |
|
|
0.6 |
|
|
KBMTL/BMTH6
|
Ratio of BMTL/BMTH Option 6 |
|
|
0.6 |
|
|
KBMTL/BMTH7
|
Ratio of BMTL/BMTH Option 7 (Burst mode disable) |
|
|
0.4 |
|
|
RBWPrgm1
|
BW pin equivalent resistance to choose BMTL/BMTH ratio option 1 (2)
|
|
24730 |
|
|
Ω |
RBWPrgm2
|
BW pin equivalent resistance to choose BMTL/BMTH ratio option 2 (2)
|
|
17125 |
|
19976 |
Ω |
RBWPrgm3
|
BW pin equivalent resistance to choose BMTL/BMTH ratio option 3 (2)
|
|
12562 |
|
13624 |
Ω |
RBWPrgm4
|
BW pin equivalent resistance to choose BMTL/BMTH ratio option 4 (2)
|
|
9018 |
|
9813 |
Ω |
RBWPrgm5
|
BW pin equivalent resistance to choose BMTL/BMTH ratio option 5 (2)
|
|
6478 |
|
6849 |
Ω |
RBWPrgm6
|
BW pin equivalent resistance to choose BMTL/BMTH ratio option 6(2)
|
|
4450 |
|
4732 |
Ω |
RBWPrgm7
|
BW pin equivalent resistance to choose BMTL/BMTH ratio option 7 (Burst mode disable) (2)
|
|
2422 |
|
3038 |
Ω |
ADAPTIVE DEADTIME |
dVHS/dt |
Detectable slew rate (1)
|
|
-0.1 |
|
-50 |
V/ns |
FAULT RECOVERY |
tPauseTimeOut
|
Paused timer (1)
|
|
|
1 |
|
s |
THERMAL SHUTDOWN |
TJ_r
|
Thermal shutdown temperature (1)
|
Temperature rising |
125 |
145 |
|
°C |
TJ_H
|
Thermal shutdown hsyterisis (1)
|
|
|
10 |
|
°C |