MOTOROLA
SEMICONDUCTOR~
TECHNICAL
DATA
MC34261
MC33261
Advance information
Power Factor Controller
The MC34261, fvtC33261 series are active power factor controllers
specifically designed for use as a preconverter in electronic ballast and
in off-line power converter applications. These integrated circuits feature
an internal start-up timer, a one quadrant multiplier for near unity power
factor, zero current detector to ensure critical conduction operation, high
gain error amplifier,
trimmed
internal
bandgap
reference,
current
sensing comparator, and a totem pole output ideally suited for driving a
power MOSFET.
Also included are protective features consisting of input undervoltage
lockout with hysteresis, cycle-by-cycle
current limiting, and a latch for
single pulse metering.
These
devices are available
in dual-in-line and
surface mount plastic packages.
q
q
Internal Start-Up Timer
One Quadrant Multiplier
-. ,.
.
P SUFFIX
PUSTIC PACWGE
CASE 626
?’..
<
)
D SUFFIX
PMSTIC PACWGE
CASE 751
(SO-8)
®
PIN CONNECTIONS
II
VoltageFeedback
Input ‘
Compensation 2
MultiplierInput 3
CurrentS;n~: 4
n
Cop Mew)
I
I
8
Vcc
7 Dive Output
6 Gnd
5 Zero Current
Detectlrrput
I
L
ErrorAmp
Mutiptier
I
ORDERING
INFORMATION
.
O
,,’
I
Multiplier &
input ~ 1
L–_E––––
P
Gnd
6
______
MC33261 D
MC33261 P
40°
to +85°C
SO-8
Plastic DIP
This dwment
rnnttins
without not!m.
infomtion
on a new prtiud.
SFM~tions
and information herein are subj~
to tiange
0 MOTOROU
INC., 1992
.
.
MAXIMUM RATINGS
Rating
Total
Power Supply and Zener Current
Symbol
(Ice
+
Value
30
500
-l.o
tolo
50
-10
Unit
mA
mA
12)
Output Current, Source
or Sink (Note 1)
Current Sense, Multiplier, and Voltage Feedback Inputs
Zero
Current Detect Input
10
yn
Iin
v
mA
High State Foward Current
Low State
Reverse Current
Power Dissipation and Thermal Characteristics
P Sufix, Plastic Package Case 626
Maximum
Power Dissipation @ TA = 70°C
Thermal Resistance, Junction-to-Air
D Sufix, Plastic Package Case 626
Maximum
Power Dissipation @ TA = 70°C
PD
RgJA
800
100
450
178
+150
o to +70
40 to +85
mW
‘CM
mW
‘cm
PD
ReJA
TJ
Thermal Resistance, Junction-to-Rr
Operating Junction Temperature
Operating Ambient Temperature (Note 3)
MC34261
MC33261
Storage Temperature
“c ,
TA
Tsto
-55 to+150
temperature range that applies (Note 3), unless otherwise noted.)
I
Characteristic
Symbol
..f>’~j~ ::
~,: ,..
.,
.*..,t.(,},,.~,
>,
Typ
$’*>*
\
,:,,.
,
Max
Unit
Voltage Feedback Input Threshold
TA =
25°C
(Vcc= 12v to28v)
TA = Tlow to
Thigh
Line Regulation (Vcc = 12 V to 28 V, TA = 25°C)
Input Bias Current (VFB = O~
‘<{$$
vFQ~f
,{$,*L
JJi>
‘ 2.465
.<:&.e !:
. .’:$,<
,$,2
\.*\
2.44
k, ~>~k
*,LJ*#~ne
~
“%$R
“ ilB
_
—
v
2.5
1.0
4.3
2.535
2.54
10
–1 .0
—
—
0.75
—
2.44
mV
@
dB
MHz
mA
v
MULTIPLIER
Dynamic Input Voltage Range
Multiplier Input (Pin 3)
Compensation (Pin 2)
..**’
Input Bias Current (VFB =1~%~:~#
i..:>,.\ \.Jf”
“’!+\
~~~)~’ ~.<.
“~,,?
‘,FO..*:
.:,, !,+..,.,,,,..’:?~
,,..>:
I.”-’’<,p:
,~,
,.*!, ,~
..-?,,.
..“~.+’
,-p
.:,> ~:.
v
Vpin 3
V~n 2
tIB
K
0 to 2.5
VFB to
(vFB + 1.0)
—
0.4
oto3.5
VFB to
(VFB + 1.5)
4.3
0.62
—
—
-1.0
0.8
@
lN
Multiplier Gain (Vpin ~/&&~~, Vpin 2 = VFB + 1.0 V, Note 2)
ZERO CURRENT ~~%@R
Input Thresh~f~qf~e
(~n increasing)
vth
vH
v[H
L’IL
1.3
40
6.1
3.3
—
—
—
1.6
110
6.7
0.7
1.8
200
—
1.0
v
mV
Hystere~f~~~&~creasing)
Input *}Woltage
v
HigW$afe (lpET = 3.0 mA)
Low State (lDET = –3.0 mA)
CURRENT SENSE COMPARATOR
Input Bias Current (Vpin 4 = OV)
Input Offset Voltage (Vpin 2 = 1.1 V, Vpin 3 = OV)
Delay to Output
IIB
V[o
tpHL fi~out)
4.5
3.5
200
–2.0
15
400
@
mV
ns
G
:’
.,
.,.
MOTOROLA
2
MC34261 . MC33261
—.
,
..
!
i“<”-
:.,
ELECTRICAL
CHARACTERISTICS
(Vcc =
12 V,
for typical values
TA =
25°C,
for min/max values TA is the operating ambient
noted.)
temperature range that applies (Note 3), unless othe~ise
I
Characteristic
/
..
DRIVE OUTPUT
Symbof
Min
Typ
Max
Unit
V)
Output Voltage (Vcc=12
Low State
(lSink=20mA)
([sink = 200 mA)
High State
(lSource = 20 mA)
(Isource = 200 mA)
Output Voltage (Vcc = 30 V)
High State (lsource = 20 mA, CL= 15 pF)
Output Voltage Rise Time (CL = 1.0 nF)
Output Voltage Fall Time (CL = 1.0 nF)
output Voltage with UVLO Activated (Vcc = 7.0 V, Isink = 1.0 mA)
RESTART TIMER
Restart Tme Delay
UNDERVOLTAGE
LOCKOUT
(Vcc
Increasing)
v
VOL
VOH
—
1.8
9.8
7.8
0.3
2.4
10.3
8.3
0.8
3.3
—
8.8
.-:.:$,
\
%@.$,:&,
~~ep.
VO(max)
14
tr
tf
VOH(UVLO)
—
—
-
—
16
50
50
v
ns
<’e $p??$o
~
0>$ ,“’ ;,. .:”
0.8
\ y,~~/,>:’
‘ J>+..
,<,<x+>h’’a,;~
—
—
ns
v
tDLY
150
e, ‘*%,,$$o
ps
Start-Up Threshold
Vth
$.&,,
‘t..
~ :b$:,?,,
‘$*, $
*
10.0
~q.p$$
10.8
Minimum Operating Voltage
After Turn-On (Vcc Decreasing)
Hysteresis
TOTAL DEVICE
Power Supply Current
Stati-Up (VCC =
7.0 V)
Operating
Dynamic Operating (50
kHz, CL = 1.0 nF)
vshutdown
‘ki,,t.?s
,t
, ‘~~~,,
?@””
.,.t”. <:
,.
v
v
v
8.0
2.0
7 ~~ 9.0
2.5
VH ,<:\ ‘“’:’’$;1.75
;%%
;:,~::<,,
.,,.,.“.~.~.:.
,? t~Q#
~
.\]t, ,,*, *.-*
,7..
“+$,,,
~$$’
>
“
—
—
mA
0.3
7.1
0.5
12
20
—
v
.....,l~?~
.~t.}**,”
—
9.0
36
.,
t:
o
\A+,+.,,.
~~~:~%,
Power Supply Zener Voltage
.,
Vz
30
,~{:
,..
NOTES 1. Maximumpaskagepowerdissipation
Kmits
mustbe observed..‘kh.Y&,:Vlow O°Cfor MC34261
=
.>.:
*.~?*$,l~~y,\
= 40°C for MC33261
“~k,.,
..~,,,\
~ ~ = Pin 4 ~reshold Voltage
,$$
VRn 3(V~n 2- VFB)
.\\
TMg~ +70°C for MC34261
= 45°C for MC33261
figure
1. Curre@,&.#
Input Threshold
figure
2. Current Sense Input Threshold
versus Multiplier Input
---
-0.5
0
0.5
1.0
1.5
2.0
lNp~voLTAGE
2.5
~
3.0
3.5
4.0
4.12
4.08
-0.04
0
0.04
0.08
0.12
vf~,
uLT~puER
M
,..
?
.
O
MC34261
q
VM,MUL~PUER
INPUT VOLTAGE ~
MC33261
MOTOROM
3
.
.
.
.
F
&
Figure 3. Voltage Feedback Input Threshold
Change versus Temperature
Figure
4. Error
Amp
Open-Loop
Gain and Phase
versus Frequency
g A.o
VCC=12V
<
Pins 1 to 2
5
~
0
o
%
u
a
F
-4.0
x
u
a
m
/ ‘
a
-8.0
u
L
u
o
~ -12 T
o
>
m
u
-ifi
>
‘ :55
-25
-
\
\
/ ‘
0
25
50
75
fC)
TA,AMBIENT
TEMPERATURE
Figure 5. Error Amp Small Signal
Transient Response
3.0 v
2.55 V
2.5 V
2.5 V
o
2.45 V
0
MOTOROLA
4
MC34261
q
,.,‘,
;. :...
MC33261
——-
figure 9. Zero Current Detector Input Threshold
Voltage Change versus Temperature
~
;
~
40
figure
o
z
g -2.0
10.
OUtpUt Saturation
versus
Load
Current
{
Voltage
Vcc ~
Vcc= 12V
80
PS
Pulsed bad
120 Hz Rate
\
\
20
—
\
VCC=12V
Upper Threshold
~“ Inmeasing)
u
o
g
~
o -
q
o
5
u
~ -20
+
~
>
a
-40
-55
h
o
: -4,0
o
F
<
~ -6,0
~_
Source Saturzton
(bad to Ground)
!
1
I
t
Lower Threshold
-25
0
25
50
75
PC)
100
125
TA, AMBIENT KMPERATURE
figure
11. Drive Output Waveform
90%
.
0
-,
‘:,
... .
\
versus Supply Voltage
12 r
11
E
:+:<$
>:.”
,, ,
Hgure13.
Supp[y&u&nt
Rgure 14. Undervoltage Lockout Thresholds
versus Temperature
I
—
.
~
~
3
10 —
—
Start-Up Threshold
WCC Imeasing)
—
~
0
:
9.0
J
n
n
~ 8.0 —
G
‘J
> 7.0
Wnimum Operating Threshold
WCC Dweasing)
0
10
Vu,
20
SUPPEf VOLTAGE ~
30
40
6.0
-55
-25
0
25
50
75
~C)
lM
125
,..
.
O
MC34261 . MC33261
TA, AMBiERT TEMPERATURE
MOTOROM
5
——-—.. .
_________
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