TEA1751LT View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
TEA1751LT
NXP Semiconductors.
TEA1751LT Datasheet PDF : 31 Pages
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NXP Semiconductors
TEA1751LT
HV start-up flyback controller with integrated PFC controller
Table 5. Characteristics …continued
Tamb = 25 C; VCC = 20 V; all voltages are measured with respect to ground; currents are positive when flowing into the IC;
unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ Max Unit
OverVoltage Protection flyback (FBAUX pin)
Iovp(FBAUX)
overvoltage protection current
on the FBAUX pin
279 300 321 A
Ncy(ovp)
number of overvoltage
protection cycles
6
8
12
Demagnetization management flyback (FBAUX pin)
Vth(comp)FBAUX
comparator threshold voltage
on the FBAUX pin
60 80 110 mV
Iprot(FBAUX)
protection current on the
FBAUX pin
VFBAUX = 50 mV
75 -
5 nA
Vclamp(FBAUX)
tsup(xfmr_ring)
clamp voltage on the FBAUX
pin
transformer ringing
suppression time
IFBAUX = 100 A
IFBAUX = 300 A
0.85 0.7
0.79 0.94
1.5 2
0.55 V
1.09 V
2.5 s
Pulse-width modulator flyback
ton(fb)min
minimum flyback on-time
ton(fb)max
maximum flyback on-time
Oscillator flyback
-
tleb
-
ns
32 40 48 s
fsw(fb)max
maximum flyback switching
frequency
100 125 150 kHz
Vstart(VCO)FBCTRL VCO start voltage on the
FBCTRL pin
1.3 1.5 1.7 V
Vhys(FBCTRL)
hysteresis voltage on pin
FBCTRL
[4] -
75 -
mV
VVCO(FBCTRL)
VCO voltage difference on the
FBCTRL pin
-
0.12 -
V
Peak current control flyback (FBCTRL pin)
VFBCTRL
Vto(FBCTRL)
voltage on the FBCTRL pin
time-out voltage on the
FBCTRL pin
for maximum flyback peak current
enable voltage
trip voltage
1.85 2
-
2.5
4.2 4.5
2.15 V
-
V
4.8 V
Rint(FBCTRL)
internal resistance on the
FBCTRL pin
-
3
-
k
IO(FBCTRL)
output current on the FBCTRL
pin
Ito(FBCTRL)
time-out current on the
FBCTRL pin
Valley switching flyback (HV pin)
VFBCTRL = 0 V
VFBCTRL = 2 V
VFBCTRL = 2.6 V
VFBCTRL = 4.1 V
1.4 1.19 0.93 mA
0.6 0.5 0.4 mA
36 30 24 A
34.5 28.5 22.5 A
(V/t)vrec(fb)
flyback valley recognition
voltage change with time
75 -
+75 V/s
td(vrec-swon)
valley recognition to switch on
delay time
[5] -
150 -
ns
Soft-start flyback (FBSENSE pin)
TEA1751LT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3. — 9 January 2013
© NXP B.V. 2013. All rights reserved.
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