FEATURES DESCRIPTION APPLICATIONS
Typical Application Diagram
R load
UCC28019A
https://www.sodocs.net/doc/af11927953.html,..................................................................................................................................................SLUS828B–DECEMBER2008–REVISED APRIL2009 8-Pin Continuous Conduction Mode(CCM)PFC Controller
?8-pin Solution Reduces External Components The UCC28019A8-pin active Power Factor
Correction(PFC)controller uses the boost topology ?Wide-Range Universal AC Input Voltage
operating in Continuous Conduction Mode(CCM).?Fixed65-kHz Operating Frequency
The controller is suitable for systems in the100W to ?Maximum Duty Cycle of98%(typ.)2kW range over a wide-range universal ac line input.?Output Over/Under-Voltage Protection Start-up current during under-voltage lockout is less
than200μA.The user can control low power standby ?Input Brown-Out Protection
mode by pulling the VSENSE pin below0.77V.?Cycle-by-Cycle Peak Current Limiting
Low-distortion wave shaping of the input current ?Open Loop Detection
using average current mode control is achieved ?Low-Power User Controlled Standby Mode without input line sensing,reducing the external
component count.Simple external networks allow for
flexible compensation of the current and voltage
control loops.The switching frequency is internally ?CCM Boost Power Factor Correction Power
fixed and trimmed to better than5%accuracy at Converters in the100W to2kW Range
25°C.Fast 1.5-A peak gate current drives the ?Digital TV
external switch.
?Home Electronics
Numerous system-level protection features include ?White Goods and Industrial Electronics
peak current limit,soft over-current,open-loop ?Server and Desktop Power Supplies
detection,input brown-out,and output
over/under-voltage.Soft start limits boost current
during start-up.A trimmed internal reference provides
accurate protection thresholds and regulation
set-point.An internal clamp limits the gate drive
voltage to12.5V.
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.Copyright?2008–2009,Texas Instruments Incorporated Products conform to specifications per the terms of the Texas
Instruments standard warranty.Production processing does not
necessarily include testing of all parameters.
ABSOLUTE MAXIMUM RATINGS (1)
DISSIPATION RATINGS (1)
RECOMMENDED OPERATING CONDITIONS
ELECTROSTATIC DISCHARGE (ESD)PROTECTION
UCC28019A
SLUS828B–DECEMBER 2008–REVISED APRIL https://www.sodocs.net/doc/af11927953.html,
These devices have limited built-in ESD protection.The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION
PART NUMBER PACKAGE
OPERATING TEMPERATURE RANGE,T A
UCC28019ADG4SOIC 8-Pin (D)Lead (Pb)-Free/Green (1)-40°C to 125°C
UCC28019APG4
Plastic DIP 8-Pin (P)Lead (Pb)-Free/Green
(1)
SOIC (D)package is available taped and reeled by adding “R”to the above part number.Reeled quantities are 2,500devices per reel.
Over operating free-air temperature range unless otherwise noted.Unless noted,all voltages are with respect to GND.Currents are positive into and negative out of the specified terminal.
PARAMETER VALUE
UNIT
VCC,GATE
-0.3to 22Input voltage range VINS,VSENSE,VCOMP,ICOMP -0.3to 7V ISENSE
-24to 7Input current range VSENSE,ISENSE -1to 1mA Operating -55to 150Junction temperature,T J Storage -65to 150
°C Lead temperature,T SOL Soldering,10s
300
(1)
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 condition beyond those included under “recommended operating conditions”is not implied.Exposure to absolute-maximum-rated conditions for extended periods of time may affect device reliability.
THERMAL IMPEDANCE,T A =25°C,
T A =85°C,
PACKAGE JUNCTION TO AMBIENT (°C/W)
POWER RATING (W)
POWER RATING (W)
SOIC-8(D)1600.650.25PDIP-8(P)
110
1
0.36
(1)
Tested per JEDEC EIA/JESD 51-1.Thermal resistance is a strong function of board construction and layout.Air flow will reduce thermal resistance.This number is only a general guide.See TI document SPRA953IC Thermal Metrics.
over operating free-air temperature range (unless otherwise noted)
PARAMETER
MIN MAX
UNIT VCC input voltage from a low-impedance source VCC OFF +1V
21V Operating junction temperature,T J
-40
125
°C
PARAMETER
RATING
UNIT Human Body Model (HBM)2kV Charged Device Model (CDM)
500
V
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ELECTRICAL CHARACTERISTICS UCC28019A
https://www.sodocs.net/doc/af11927953.html,..................................................................................................................................................SLUS828B–DECEMBER2008–REVISED APRIL2009 Unless otherwise noted,VCC=15V DC,0.1μF from VCC to GND,-40°C≤T J=T A≤125°C.All voltages are with respect to
GND.Currents are positive into and negative out of the specified terminal.
PARAMETER TEST CONDITION MIN TYP MAX UNITS VCC Bias Supply
ICC PRESTART ICC pre-start current VCC=VCC ON–0.1V25100200μA ICC STBY ICC standby current VSENSE=0.5V1 2.2 2.9
mA ICC ON_load ICC operating current VSENSE=4.5V,C GATE=4.7nF47.510
Under Voltage Lockout(UVLO)
VCC ON VCC turn on threshold1010.511
VCC OFF VCC turn off threshold99.510V UVLO hysteresis0.81 1.2
Oscillator
T A=25°C61.76568.3
f SW Switchin
g frequency-25°C≤T A≤125°C596571kHz
-40°C≤T A≤125°C5771
PWM
VCOMP=0V,VSENSE=5V,
D MIN Minimum duty cycle0%
ICOMP=6.4V
D MAX Maximum duty cycle VSENSE=4.95V94%98%99.3%
t OFF(min)Minimum off time VSENSE=3V,ICOMP=1V100250600ns System Protection
ISENSE threshold,Soft Over Current
V SOC-0.66-0.73-0.79 (SOC)
V ISENSE threshold,Peak Current Limit
V PCL-1-1.08-1.15 (PCL)
ISENSE bias current,ISENSE Open-Pin
I ISOP ISENSE=0V-2.1-4.0μA
Protection(ISOP)
ISENSE threshold,ISENSE Open-Pin
V ISOP ISENSE=open pin0.082
Protection(ISOP)
V VSENSE threshold,Open Loop ICOMP=1V,ISENSE=-0.1V,
V OLP0.770.820.86 Protection(OLP)VCOMP=1V
Open Loop Protection(OLP)Internal
VSENSE=0.5V100250nA pull-down current
VSENSE threshold,output
V UVD 4.63 4.75 4.87 Under-Voltage Detection(UVD)(1)
VSENSE threshold,output Over-Voltage
V OVP ISENSE=-0.1V 5.12 5.25 5.38 Protection(OVP)
V
V INSBROWNOUT Input Brown-Out Detection(IBOP)
0.760.820.88
_th
high-to-low threshold
Input Brown-Out Detection(IBOP)
V INSENABLE_th 1.4 1.5 1.6 low-to-high threshold
I VINS_0V VINS bias current VINS=0V0±0.1μA
ICOMP threshold,external overload
0.6V
protection
(1)Not production tested.Characterized by design.
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ELECTRICAL CHARACTERISTICS(continued)
Unless otherwise noted,VCC=15V DC,0.1μF from VCC to GND,-40°C≤T J=T A≤125°C.All voltages are with respect to GND.Currents are positive into and negative out of the specified terminal.
PARAMETER TEST CONDITION MIN TYP MAX UNITS Current Loop
g mi Transconductance gain T A=25°C0.750.95 1.15mS
Output linear range(2)±50μA
ICOMP voltage during OLP VSENSE=0.5V 3.74 4.3V Voltage Loop
V REF Reference voltage-40°C≤T A≤125°C 4.95 5.1V
g mv Transconductance gain without EDR-31.5-42-52.5
μS
g mv-EDR Transconductance gain under EDR VSENSE=4.65V-440
Maximum sink current under normal
VSENSE=6V,VCOMP=4V213038 operation
Source current under soft start VSENSE=4V,VCOMP=2.5V-21-30-38μA
VSENSE=4V,VCOMP=2.5V-300
Maximum source current under EDR
operation VSENSE=4V,VCOMP=4V-170
Enhanced dynamic response VSENSE
4.63 4.75 4.87V
low threshold,falling(2)
VSENSE input bias current VSENSE=5V20100250nA
VCOMP voltage during OLP VSENSE=0.5V,I VCOMP=0.5mA00.20.4V
VCOMP rapid discharge current VCOMP=3V,VCC=0V0.77mA
V PRECHARGE VCOMP precharge voltage I VCOMP=-100μA,VSENSE=5V 1.76V
I PRECHARGE VCOMP precharge current VCOMP=1.0V-1mA
VSENSE threshold,end of soft start Initial start up 4.95V GATE Driver
GATE current,peak,sinking(2)C GATE=4.7nF2
A GATE current,peak,sourcing(2)C GATE=4.7nF-1.5
GATE rise time C GATE=4.7nF,GATE=2V to8V84060
ns GATE fall time C GATE=4.7nF,GATE=8V to2V82540
GATE low voltage,no load I GATE=0A00.05
GATE low voltage,sinking I GATE=20mA0.30.8
GATE low voltage,sourcing I GATE=-20mA-0.3-0.8
VCC=5V,I GATE=5mA0.20.75 1.2 GATE low voltage,sinking,device OFF
V
VCC=5V,I GATE=20mA0.20.9 1.5
VCC=20V,C GATE=4.7nF11.012.514.0
VCC=11V,C GATE=4.7nF9.510.511.0 GATE high voltage
VCC=VCC OFF+0.2V,C GATE=
8.09.410.2
4.7nF
(2)Not production tested.Characterized by design.
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DEVICE INFORMATION
UCC28019A
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SOIC PDIP Top View
TERMINAL FUNCTIONS
NAME PIN#I/O FUNCTION
Gate drive:Integrated push-pull gate driver for one or more external power MOSFETs.Typical2.0-A GATE8O
sink and1.5-A source capability.Output voltage is typically clamped at12.5V.
GND1Ground:device ground reference.
Current loop compensation:Transconductance current amplifier output.A capacitor connected to ICOMP2O GND provides compensation and averaging of the current sense signal in the current control loop.
The controller is disabled if the voltage on ICOMP is less than0.6V.
Inductor current sense:Input for the voltage across the external current sense resistor,which
represents the instantaneous current through the PFC boost inductor.This voltage is averaged by the
current amplifier to eliminate the effects of ripple and noise.Soft Over Current(SOC)limits the ISENSE3I average inductor current.Cycle-by-cycle Peak Current Limit(PCL)immediately shuts off the GATE
drive if the peak-limit voltage is exceeded.An internal1.5-μA current source pulls ISENSE above0.1
V to shut down PFC operation if this pin becomes https://www.sodocs.net/doc/af11927953.html,e a220-?resistor between this
pin and the current sense resistor to limit inrush-surge currents into this pin.
Device supply:External bias supply input.Under-Voltage Lockout(UVLO)disables the controller until
VCC exceeds a turn-on threshold of10.5V.Operation continues until VCC falls below the turn-off VCC7
(UVLO)threshold of9.5V.A ceramic by-pass capacitor of0.1μF minimum value must be connected
from VCC to GND as close to the device as possible for high frequency filtering of the VCC voltage.
Voltage loop compensation:Transconductance voltage error amplifier output.A resistor-capacitor
network connected from this pin to GND provides compensation.VCOMP is held at GND until VCC,
VINS,and VSENSE all exceed their threshold voltages.Once these conditions are satisfied,VCOMP VCOMP5O is charged until the VSENSE voltage reaches99%of its nominal regulation level.When Enhanced
Dynamic Response(EDR)is engaged,a higher transconductance is applied to VCOMP to reduce the
charge time for faster transient response.Soft Start is programmed by the capacitance on this pin.
The EDR higher transconductance is inhibited during Soft Start.
Input ac voltage sense:A filtered resistor-divider network connects from this pin to the rectified-mains
node.Input Brown-Out Protection(IBOP)detects when the system ac-input voltage is above a
user-defined normal operating level,or below a user-defined“brown-out”level.At startup the VINS4I controller is disabled until the VINS voltage exceeds a threshold of1.5V,initiating a soft start.The
controller is also disabled if VINS drops below the brown-out threshold of0.8V.Operation will not
resume until both VINS and VSENSE voltages exceed their enable thresholds,initiating another soft
start.
Output voltage sense:An external resistor-divider network connected from this pin to the PFC output
voltage provides feedback sensing for regulation to the internal5-V reference voltage.A small
capacitor from this pin to GND filters high-frequency noise.Standby mode disables the controller and
discharges VCOMP when the voltage at VSENSE drops below the enable threshold of0.8V.An VSENSE6I internal100-nA current source pulls VSENSE to GND for Open-Loop Protection(OLP),including pin
disconnection.Output Over-Voltage Protection(OVP)disables the GATE output when VSENSE
exceeds105%of the reference voltage.Enhanced Dynamic Response(EDR)rapidly returns the
output voltage to its normal regulation level when a system line or load step causes VSENSE to fall
below95%of the reference voltage.
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R C ISENSEfilter
UCC28019A
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Block Diagram
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TYPICAL CHARACTERISTICS
0515VCC -Bias Supply Voltage -V
0.51.52.53.04.01020
1.02.03.5
SUPPLY CURRENT
vs
BIAS SUPPLY VOLTAGE
I C C -S u p p l y C u r r e n t -m A
-60
-35
-10
65
115
140
T J -Temperature -°C
8.0
9.011.0
12.0
15
40
90
10.0
V C C (o n )/V C C (o f f )-U V L O T h r e s h o l d -V
UVLO THRESHOLDS
vs
TEMPERATURE
T J -Temperature -°C
24681013579I C C -S u p p l y C u r r e n t -m A
SUPPLY CURRENT
vs
TEMPERATURE
-60
-35
-1065
115
140
15
40
90
T J -Temperature -°C
0.1
0.20.3
0.4
0.5
I C C (s t a r t )-S u p p l y C u r r e n t -m A
SUPPLY CURRENT
vs
TEMPERATURE
-60
-35
-10
65115
140
154090UCC28019A
https://www.sodocs.net/doc/af11927953.html, ..................................................................................................................................................SLUS828B–DECEMBER 2008–REVISED APRIL 2009
Unless otherwise noted,VCC =15V DC ,0.1μF from VCC to GND,-40°C ≤T J =T A ≤125°C.All voltages are with respect to
GND.Currents are positive into and negative out of the specified terminal.
Figure 1.Figure 2.
Figure 3.Figure 4.
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T J -Temperature -°C
55
5963677175f S W -S w i t c h i n g F r e q u e n c y -k H z
OSCILLATOR FREQUENCY
vs
TEMPERATURE
5761656973-60
-35
-10
65
115
140
15
40
90
1016VCC -Bias Supply Voltage -V
55
5963677175
f S W -S w i t c h i n
g F r e q u e n c y -k H z
OSCILLATOR FREQUENCY
vs
BIAS SUPPLY VOLTAGE
576165697320
181412T J -Temperature -°C
0.40.81.21.62.0g m i -G a i n -m A /V
CURRENT AVERAGING
AMPLIFIER TRANSCONDUCTANCE
vs
TEMPERATURE
0.20.61.01.41.8-60
-35-1065115140
154090T J -Temperature -°C
30
3438424650
g m v -G a i n -μA /V
VOLTAGE ERROR AMPLIFIER
TRANSCONDUCTANCE
vs
TEMPERATURE
32
364044
48-60-35-1065115140
154090UCC28019A
SLUS828B–DECEMBER 2008–REVISED APRIL https://www.sodocs.net/doc/af11927953.html,
TYPICAL CHARACTERISTICS (continued)
Unless otherwise noted,VCC =15V DC ,0.1μF from VCC to GND,-40°C ≤T J =T A ≤125°C.All voltages are with respect to GND.Currents are positive into and negative out of the specified terminal.
Figure 5.Figure 6.
Figure 7.Figure 8.
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T J -Temperature -°C
V S O C -I S E N S E T h r e s h o l d -V
ISENSE THRESHOLD
vs
TEMPERATURE
-60
-35
-10
65115
140
1540900-0.2
-0.4-0.6-0.8-1.0
-0.1-0.3-0.5-0.7-0.9
T J -Temperature -°C
4.50
4.75
5.00
5.25
5.50
V R E F -R e f e r e n c e V o
l t a g e -V
REFERENCE VOLTAGE
vs
TEMPERATURE
-60
-35
-10
65115
140
154090T J -Temperature -°C
4.50
5.25
5.50
V O V P /V U V D -V S E N S E T h r e s h o l d -V
VSENSE THRESHOLD
vs
TEMPERATURE
4.75
5.00
-60
-35
-10
65115
140
154090T J -Temperature -°C
0.40.81.21.62.0V O L P –V S E N S E T h r e s h o l d -V
VSENSE THRESHOLD
vs
TEMPERATURE
0.2
0.61.01.41.8-60
-35
-10
65115
140
154090UCC28019A
https://www.sodocs.net/doc/af11927953.html, ..................................................................................................................................................SLUS828B–DECEMBER 2008–REVISED APRIL 2009
TYPICAL CHARACTERISTICS (continued)
Unless otherwise noted,VCC =15V DC ,0.1μF from VCC to GND,-40°C ≤T J =T A ≤125°C.All voltages are with respect to GND.Currents are positive into and negative out of the specified terminal.
Figure 9.Figure 10.
Figure 11.Figure 12.
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T J -Temperature -°C
0.40.81.21.62.0V I N S E N A B L E _T H /V I N S B R O U W N O U T _T H –V I N S T h r e s h o l d -V
VINS THRESHOLD
vs
TEMPERATURE
0.20.61.01.41.8-60
-35
-10
65115
140
154090
T J -Temperature -°C
100
200300400500600
t -T i m e -
n s
MINIMUM OFF TIME
vs
TEMPERATURE
105250350450550-60
-35-1065115140
154090T J -Temperature -°C 0
1020304050t -T i m e -n s
GATE DRIVE SWITCHING
vs
TEMPERATURE
515253545-60
-35
-10
65
115
140
15
40
90
10
12
16
20
VCC -Bias Supply Voltage -V
1020
304050
18
t -T i m e -n s
GATE DRIVE SWITCHING
vs
BIAS SUPPLY VOLTAGE
51525354514
UCC28019A
SLUS828B–DECEMBER 2008–REVISED APRIL https://www.sodocs.net/doc/af11927953.html,
TYPICAL CHARACTERISTICS (continued)
Unless otherwise noted,VCC =15V DC ,0.1μF from VCC to GND,-40°C ≤T J =T A ≤125°C.All voltages are with respect to GND.Currents are positive into and negative out of the specified terminal.
Figure 13.Figure 14.
Figure 15.Figure 16.
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UCC28019ADR UCC28019AD UCC28019AP