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UCC2819, UCC3819
PROGRAMMABLE OUTPUT
POWER FACTOR PREREGULATOR
SLUS482B - APRIL 2001 − REVISED DECEMBER 2004
D
Controls Boost Preregulator to Near-Unity
D
D
D
D
D
D
D
D
D
D
D
Power Factor
World Wide Line Operation
Over-Voltage Protection
Accurate Power Limiting
Average Current Mode Control
Improved Noise Immunity
Improved Feed-Forward Line Regulation
Leading Edge Modulation
150-µA Typical Start-Up Current
Low-Power BiCMOS Operation
10.8-V to 17-V Operation
Programmable Output Voltage (Tracking
Boost Topology)
D, DW, N, and PW PACKAGES
(TOP VIEW)
GND
PKLMT
CAOUT
CAI
MOUT
IAC
VAOUT
VFF
DRVOUT
VCC
CT
VAI
RT
VSENSE
OVP/EN
VREF
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
description
The UCC2819/UCC3819 provides all the functions necessary for active power factor corrected preregulators.
The controller achieves near unity power factor by shaping the ac-input line current waveform to correspond
to that of the ac-input line voltage. Average current mode control maintains stable, low distortion sinusoidal line
current.
Designed in Texas Instrument’s BiCMOS process, the UCC3819 offers new features such as lower start-up
current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry and a leading-edge
modulation technique to reduce ripple current in the bulk capacitor.
The UCC3819 allows the output voltage to be programmed by bringing out the error amplifier noninverting input.
Available in the 16-pin D, DW, N, and PW packages.
block diagram
VCC
15
OVP/EN 10
7.5 V
REFERENCE
9
VREF
1.9 V
VAOUT
7
VOLTAGE
ERROR AMP
X
÷
MULT
X
X2
CURRENT
AMP
−
+
−
+
0.33 V
ENABLE
ZERO POWER
UVLO
10.2 V/9.7 V
VCC
OVP
16 DRVOUT
S
Q
PWM
LATCH
R
R
1
CLK
GND
PKLMT
−
+
VSENSE 11
VAI 13
−
+
8.0 V
−
+
OSC
PWM
+
−
VFF
8
MIRROR
2:1
CLK
IAC
MOUT
6
5
4
CAI
3
OSCILLATOR
−
+
2
12
14
CT
UDG-01009
CAOUT RT
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
2004, Texas Instruments Incorporated
www.ti.com
1
SLUS482B - APRIL 2001 − REVISED DECEMBER 2004
UCC2819, UCC3819
PROGRAMMABLE OUTPUT
POWER FACTOR PREREGULATOR
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
†
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
Gate drive current, continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2 A
Gate drive current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 A
Input voltage, CAI, MOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V
Input voltage, PKLMT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 V
Input voltage, VSENSE, OVP/EN, VAI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 V
Input current, RT, IAC, PKLMT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA
Maximum negative voltage, DRVOUT, PKLMT, MOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
AVAILABLE OPTIONS
PACKAGE DEVICES
TJ
0°C to 70°C
−40°C to 85°C
D PACKAGE
UCC3819D
UCC2819D
DW PACKAGE
UCC3819DW
UCC2819DW
N PACKAGE
UCC3819N
UCC2819N
PW PACKAGE
UCC3819PW
UCC2819PW
† The D, DW, and PW packages are available taped and reeled. Add TR suffix to device type (e.g. UCC3819DTR) to
order quantities of 2500 devices per reel.
electrical characteristics
, T
A
= 0°C to 70°C for the UCC3819, −40°C to 85°C for the UCC2819, VCC = 12 V,
R
T
= 22 kΩ, C
T
= 270 pF, (unless otherwise noted)
supply current
PARAMETER
Supply current, off
Supply current, on
VCC = 12 V,
TEST CONDITIONS
VCC = (VCC turnon threshold −0.3 V)
No load on DRVOUT
2
MIN
TYP
150
4
MAX
300
6
UNITS
µA
mA
UVLO
PARAMETER
VCC turnon threshold
VCC turnoff threshold
UVLO hysteresis
TEST CONDITIONS
MIN
9.7
9.4
0.3
TYP
10.2
9.7
0.5
MAX
10.8
UNITS
V
V
V
voltage amplifier
PARAMETER
VIO
VAI bias current
VSENSE bias current
CMRR
Open loop gain
High-level output voltage
Low-level output voltage
TEST CONDITIONS
VAOUT = 2.75 V,
VAOUT = 2.75 V,
VSENSE = VREF,
VCM = 1 V to 7.5 V
VAOUT = 2 V to 5 V
IL = −150
µA
IL = 150
µA
VCM = 3.75 V
VCM = 3.75 V
VAOUT = 2.5 V
50
50
5.3
0
MIN
−15
50
50
70
90
5.5
50
5.6
150
TYP
MAX
15
200
200
UNITS
mV
nA
nA
dB
dB
V
mV
2
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UCC2819, UCC3819
PROGRAMMABLE OUTPUT
POWER FACTOR PREREGULATOR
SLUS482B - APRIL 2001 − REVISED DECEMBER 2004
R
T
= 22 kΩ, C
T
= 270 pF, (unless otherwise noted)
electrical characteristics
, T
A
= 0°C to 70°C for the UCC3819, −40°C to 85°C for the UCC2819, VCC = 12 V,
over voltage protection and enable
PARAMETER
Over voltage reference
Hysteresis
Enable threshold
Enable hysteresis
TEST CONDITIONS
MIN
VREF
+0.48
300
1.7
0.1
TYP
VREF
+0.50
500
1.9
0.2
MAX
VREF
+0.52
600
2.1
0.3
UNITS
V
mV
V
V
current amplifier
PARAMETER
Input offset voltage
Input bias current
Input offset current
Open loop gain
Common-mode rejection ratio
High-level output voltage
Low-level output voltage
Gain bandwidth product
VCM = 0 V,
VCM = 0 V,
VCM = 0 V,
VCM = 0 V,
VCM = 0 V to 1.5 V,
IL = −120
µA
IL = 1 mA
See Note 1
TEST CONDITIONS
VCAOUT = 3 V
VCAOUT = 3 V
VCAOUT = 3 V
VCAOUT = 2 V to 5 V
VCAOUT = 3 V
MIN
−3.5
TYP
0
−50
25
90
60
5.6
0.1
80
6.5
0.2
2.5
6.8
0.5
MAX
2.5
−100
100
UNITS
mV
nA
nA
dB
dB
V
V
MHz
voltage reference
PARAMETER
Input voltage, (UCC3819)
Input voltage, (UCC2819)
Load regulation
Line regulation
Short-circuit current
TA = 0°C to 70°C
TA = −40°C to 85°C
IREF = 1 mA to 2 mA
VCC = 10.8 V to 15 V,
VREF = 0 V
See Note 2
TEST CONDITIONS
MIN
7.387
7.369
0
0
−20
−25
TYP
7.5
7.5
MAX
7.613
7.631
10
10
−50
UNITS
V
V
mV
mV
mA
oscillator
PARAMETER
Initial accuracy
Voltage stability
Total variation
Ramp peak voltage
Ramp amplitude voltage
(peak to peak)
NOTES: 1. Ensured by design, Not production tested.
2. Reference variation for VCC < 10.8 V is shown in Figure 2.
TEST CONDITIONS
TA = 25°C
VCC = 10.8 V to 15 V
Line, temp,
See Note 1
MIN
85
−1
80
4.5
3.5
5
4
TYP
100
MAX
115
1
120
5.5
4.5
UNITS
kHz
%
kHz
V
V
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3
SLUS482B - APRIL 2001 − REVISED DECEMBER 2004
UCC2819, UCC3819
PROGRAMMABLE OUTPUT
POWER FACTOR PREREGULATOR
R
T
= 22 kΩ, C
T
= 270 pF, (unless otherwise noted)
electrical characteristics
, T
A
= 0°C to 70°C for the UCC3819, −40°C to 85°C for the UCC2819, VCC = 12 V,
peak current limit
PARAMETER
PKLMT reference voltage
PKLMT propagation delay
TEST CONDITIONS
MIN
−15
150
350
TYP
MAX
15
500
UNITS
mV
ns
multiplier
PARAMETER
IMOUT, high line, low power output
current, (0°C to 85°C)
IMOUT, high line, low power output
current, (−40°C to 85°C)
IMOUT, high line, high power output
current
IMOUT, low line, low power output
current
IMOUT, low line, high power output
current
IMOUT, IAC limited
Gain constant (K)
IMOUT, zero current
IMOUT, zero current, (0°C to 85°C)
IMOUT, zero current, (−40°C to 85°C)
Power limit (IMOUT x VFF)
IAC = 500
µA,
IAC = 500
µA,
IAC = 500
µA,
IAC = 150
µA,
IAC = 150
µA,
IAC = 150
µA,
IAC = 300
µA,
IAC = 150
µA,
IAC = 500
µA,
IAC = 500
µA,
IAC = 500
µA,
IAC = 150
µA,
TEST CONDITIONS
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 1.4 V,
VFF = 1.4 V,
VFF = 1.3 V,
VFF = 3 V,
VFF = 1.4 V,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 1.4 V,
VAOUT = 1.25 V
VAOUT = 1.25 V
VAOUT = 5 V
VAOUT = 1.25 V
VAOUT = 5 V
VAOUT = 5 V
VAOUT = 2.5 V
VAOUT = 0.25 V
VAOUT = 0.25 V
VAOUT = 0.5 V
VAOUT = 0.5 V
VAOUT = 5 V
−375
MIN
0
0
−70
−10
−268
−250
0.5
−90
−19
−300
−300
1
0
0
0
0
−420
TYP
−6
MAX
−20
−23
−105
−50
−346
−400
1.5
−2
−2
−3
−3.5
−485
UNITS
µA
µA
µA
µA
µA
µA
1/V
µA
µA
µA
µA
µW
feed-forward
PARAMETER
VFF output current
IAC = 300
µA
TEST CONDITIONS
MIN
−140
TYP
−150
MAX
−160
UNITS
µA
gate driver
PARAMETER
Pullup resistance
Pulldown resistance
Output rise time
Output fall time
Maximum duty cycle
Minimum controlled duty cycle
At 100 kHz
TEST CONDITIONS
IO = –100 mA to −200 mA
IO = 100 mA
CL = 1 nF,
CL = 1 nF,
RL = 10
Ω,
RL = 10
Ω,
VDRVOUT = 0.7 V to 9 V
VDRVOUT = 9 V to 0.7 V
93
MIN
TYP
5
2
25
10
95
MAX
12
10
50
50
100
2
UNITS
Ω
Ω
ns
ns
%
%
zero power
PARAMETER
Zero power comparator threshold
TEST CONDITIONS
Measured on VAOUT
MIN
0.20
TYP
0.33
MAX
0.50
UNITS
V
4
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