tea1752t NXP Semiconductors, tea1752t Datasheet - Page 24

• Manufacturer Part Number: tea1752t
• Description: Greenchip Iii Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 5.
T
the IC; unless otherwise specified.
TEA1752T_LT
Product data sheet
Symbol
Pulse width modulator PFC
t
Output voltage sensing PFC (pin VOSENSE)
V
V
V
I
Overcurrent protection PFC (pin PFCSENSE)
V
t
I
Soft start PFC (pin PFCSENSE)
I
V
V
R
Oscillator PFC
f
t
Valley switching PFC (pin PFCAUX)
(ΔV/Δt)
t
t
Demagnetization management PFC (pin PFCAUX)
V
t
on(PFC)
bst(dual)
leb(PFC)
prot(PFCSENSE)
start(soft)PFC
sw(PFC)max
off(PFC)min
vrec(PFC)
to(vrec)PFC
to(demag)PFC
amb
th(ol)(VOSENSE)
reg(VOSENSE)
ovp(VOSENSE)
sense(PFC)max
start(soft)PFC
stop(soft)PFC
start(soft)PFC
th(comp)PFCAUX
= 25
vrec(PFC)
°
C; V
Characteristics
CC
= 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into
Parameter
PFC on-time
open-loop threshold voltage on
pin VOSENSE
regulation voltage on pin
VOSENSE
overvoltage protection voltage
on pin VOSENSE
dual boost current
maximum PFC sense voltage
PFC leading edge blanking
time
protection current on pin
PFCSENSE
PFC soft start current
PFC soft start voltage
PFC soft stop voltage
PFC soft start resistance
maximum PFC switching
frequency
minimum PFC off-time
PFC valley recognition voltage
change with time
PFC valley recognition time
PFC valley recognition time-out
time
comparator threshold voltage
on pin PFCAUX
PFC demagnetization time-out
time
…continued
All information provided in this document is subject to legal disclaimers.
Rev. 02 — 24 June 2010
Conditions
V
V
V
V
for I
V
V
V
ΔV/Δt = 50 mV/μs
ΔV/Δt = 200 mV/μs
enabling voltage
disabling voltage
V
demagnetization to ΔV/Δt = 0
VINSENSE
PFCCOMP
VINSENSE
PFCCOMP
VINSENSE
VOSENSE
VINSENSE
PFCAUX
O(PFCCOMP)
= 1 V peak-to-peak
< 2.1 V
= V
= V
= 3.3 V;
= 0.9 V;
< V
> V
ton(PFCCOMP)max
ton(PFCCOMP)max
bst(dual)
bst(dual)
= 0
TEA1752T; TEA1752LT
or
GreenChip III SMPS control IC
[2]
[3]
Min
3.6
30
-
2.475 2.500 2.525 V
2.60
-
-
0.49
0.51
250
−50
−75
0.46
0.42
12
-
0.8
-
-
-
3
−150
40
Typ
4.5
40
1.15
2.63
−15
−30
0.52
0.54
310
-
−60
0.50
0.45
-
250
1.1
-
-
-
4
−100
50
© NXP B.V. 2010. All rights reserved.
Max
5.0
53
-
2.67
-
-
0.55
0.57
370
−5
−45
0.54
0.48
-
-
1.4
1.7
300
50
6
−50
60
24 of 34
Unit
μs
μs
V
V
μA
nA
V
V
ns
nA
μA
V
V
kΩ
kHz
μs
V/μs
ns
ns
μs
mV
μs