Using the UCC29910A-730
User's Guide
Literature Number: SLUU505A
May 2011 – Revised October 2011
User's Guide
SLUU505A – May 2011 – Revised October 2011
Buck PFC Pre-Regulator in Power Factor Correction
Applications
1
Introduction
This EVM is to help evaluating UCC29910A buck PFC pre-regulator controller device in Power Factor
Correction (PFC) applications especially targeting notebook computer charger area with universal AC
input voltages.
2
Description
The EVM is a 100-W buck PFC pre-regulator with universal AC input between 90 VAC and 264 VAC, input
frequency between 47 Hz and 63 Hz, and output voltage nominal 84 VDC and maximum load current 1.2 A.
2.1
Typical Applications
•
•
2.2
Features
•
•
•
•
•
•
•
•
•
•
2
High Efficiency AC-DC Adapters
Low Profile and High Density Adapters
Universal Line Input AC Voltage (between 90 VAC and 264 VAC, with frequency range 47 Hz and 63 Hz)
Regulated Output DC Voltage (84 VDC with maximum 1.2-A load current)
Output Voltage Regulation From no Load to Full Load, and From Low Line to High Line
High Efficiency 96% Peak and 95% at Full Load
High Power Factor Over 0.9
Double Sided PCB Layout
Buck PFC Technology
Non-Latching Input Under Voltage Protection
Over Current Protection
Test Points to Facilitate Device and Topology Evaluation
Buck PFC Pre-Regulator in Power Factor Correction Applications
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Electrical Performance Specifications
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3
Electrical Performance Specifications
Table 1. UCC29910AEVM-730 Electrical Performance Specifications
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
Input Characterstics
VIN
Input voltage
90
fAC
Input frequency
47
IIN
Input current
VIN = nom, IOUT = max
VIN_UVLO
Input UVLO
IOUT = min to max
VIN_OV
Input OV
IOUT = min to max
265
PF
Power factor
VIN = nom, 50% load
0.9
82.3
115
264
VAC
63
Hz
1.5
ARMS
80
VAC
Output Characteristics
VOUT
Output voltage (1)
VIN = nom, IOUT = nom
Reg_LN
Line regulation (2)
VIN = min to max, IOUT = nom
5.0%
Reg_LD
Load regulation (2)
VIN = nom, IOUT = min to max
5.0%
VOUT_ripple
Output voltage ripple
VIN = nom, IOUT = max
IOUT
Output current
VIN = min to max
IOCP
Output over current
VIN = nom, IOUT = IOUT - 5%
84
85.7
6
0
1.20
V
VPP
A
1.30
Systems Characteristics
fSW
Switching frequency
Eff_Peak
Peak efficiency
VIN = nom, IOUT = min to max
96%
Eff_FL
Full load efficiency
VIN = nom, IOUT = max
95%
Top
Operating temperature range
VIN = min to max, IOUT = min to max
(1)
(2)
100
25
kHz
°C
Start up is normally with load current not greater than 0.2 A. Start up with no load, or less than 0.2-A load, may make output
voltage higher and can be as high as 88 V. Start up with load current greater than 0.2 A may trigger over current protection and
may make output voltage in hiccup operation.
Load step down to zero may make output voltage higher and can be as high as 90 V.
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Schematic
Schematic
+
+
+
4
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Figure 1. Schematic
4
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Test Setup
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5
Test Setup
5.1
Test Equipment
Voltage Source (Main): 90 VAC to 265 VAC, 2.0 AAC, such as Agilent 6813B AC Power Source/Analyzer, or
equivalent.
Voltage Source (Bias): 10 VDC/0.2 A.
Multimeters: 100 VDC/1.5 ADC four-digit display meters, such as Fluke 45 Dual Display Multimeter, or
equivalent.
Output Load: 100 VDC/1.5 ADC load such as TDI RBL488 Electronic Load 100-120-800, or equivalent.
Fan: 200 LFM minimum.
Recommended Wire Gauge: AWG #18 for input voltage connection and output load connection.
5.2
Recommended Test Setup
FAN
TP10
TP6
TP9
TP11
TP8
TP4
TP1
LINE
L4
L1
C1
F1
NEUTRAL
TP2
AC SOURCE
D5 C5
C6
C19
C21
C20
UCC29910AEVM-730
L3
L2
TP13
+
TP12 J3
TP7 TP5
S1
J2
J1
HPA730
TP3
OFF ON
+
+10V BIAS
SUPPLY
+
V1
+
A1
-
+
(Electronic)
Load-1
Figure 2. UCC29910AEVM-730 Recommended Test Set Up
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Test Setup
5.3
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List of Test Points
Table 2. Test Point Function
6
TEST POINTS
NAME
TP1
LINE input
DESCRIPTION
TP2
NEUTRAL input
TP3
GND
TP4
Rectifier Input
TP5
FET Drive
TP6
GND
Reference ground for power
TP7
3V3B
3.3-V bias and U3 (UCC29910A) Pin 1
TP8
Current Monitor
Q5 drain current monitoring
Q5 drain current monitoring
AC Input voltage LINE connection
AC input voltage NEUTRAL connection
Reference ground for signal
Input after common mode choke
U3 (UCC29910A) Pin 13
TP9
Current Monitor
TP10
Drive
Q5 gate
TP11
Drain
Q5 drain
TP12
VO-
Output voltage negative terminal
TP13
VO+
Output voltage positive terminal
J1
Bias
External 10-V bias
J2
Fault
Manual Fault Input to trigger fault protection from external circuit
J3
Vout
Output power terminal
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Test Procedure
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6
Test Procedure
Set up the EVM per Figure 2.
CAUTION
High voltage and high temperature present when the EVM is in operation!
High voltage present for some time after power down of the EVM. Check output
terminals with a voltmeter before handling the EVM!
6.1
Power Factor and Efficiency Measurement Procedure
1.
2.
3.
4.
Check the switch S1 at ON position. If S1 is not at ON position, switch S1 to the position ON.
Turn on the ventilation fan and keep the fan in operation during the time of test.
Set the AC source voltage to 115 VAC and frequency to 60 Hz. But keep the AC source powered off
Prior to connecting the AC source, set the current to 2.5-A peak and 2.5-A limit. Connecting AC source
to LINE and NEUTRAL terminals as shown in Figure 2.
5. Connect voltmeter V1 across the J3 as shown in Figure 2.
6. Connect ammeter A1 to J3 positive terminal and connect ammeter A1 to Load-1. Then connect Load-1
negative terminal to J3 negative terminal.
7. Connect 10-V Bias to J1, turn on 10-V Bias.
8. Set Load-1 to constant current mode to sink 0.2 ADC and set Load-1 at 100 VDC input range before
turning on the AC source.
9. Turn on the AC source.
10. Varying the load current from 0.2 A to 1.2 A, along with the load current variation:
(a) Read input voltage, input real power, and power factor from the AC source.
(b) Read output voltage and output current from V1 and A1.
11. Turn off the AC source.
12. Set the AC source voltage to 230 VAC and frequency to 50 Hz.
13. Repeat step 8 and 10.
NOTE: Start up is normally with load current not greater than 0.2A.
Start up with no load, or less than 0.2-A load, may make output voltage higher and can be as
high as 88 V.
Start up with load current greater than 0.2 A may trigger over current protection and may
make output voltage in hiccup operation.
Load step down to zero may make output voltage higher and can be as high as 90 V.
6.2
Equipment Shutdown
1.
2.
3.
4.
Shut down
Shut down
Shut down
Shut down
the
the
the
the
AC source
10-V Bias
load
FAN
CAUTION
High voltage may present after power down of the EVM for some time. Check
output terminals with a voltmeter before handling the EVM!
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Performance Data and Typical Characteristic Curves
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7
Performance Data and Typical Characteristic Curves
7.1
Efficiency at 115 VAC and 230 VAC
Figure 3
98.0%
96.0%
Efficiency
94.0%
92.0%
90.0%
88.0%
86.0%
84.0%
82.0%
0.201
0.401
0.601
0.801
1.002
1.202
Load Current: A
115Vac 60Hz
230Vac 50Hz
Figure 3. Efficiency with 115 VAC and 230 VAC (Test Points: TP1, TP2, TP12 and TP13)
7.2
Efficiency at Full Load with Respect to Input Voltage
Figure 4
98.0%
Efficiency at full load
97.0%
96.0%
95.0%
94.0%
93.0%
92.0%
91.0%
90.0%
89.0%
0
0
25
0.
26
5.
23
0
.0
0
21
0.
.0
19
0
0
0
15
0.
17
0.
0
13
0.
0
11
0.
90
.0
88.0%
Input Voltage: Vac
(60Hz for 90Vac to 160Vac and 50Hz for 170Vac to 264Vac
Figure 4. Efficiency at Full Load (Test Points: TP1, TP2, TP12 and TP13)
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Performance Data and Typical Characteristic Curves
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7.3
Power Factor at 115 VAC and 230 VAC
Power Factor
Figure 5
1.000
0.950
0.900
0.850
0.800
0.750
0.700
0.650
0.600
0.550
0.500
0.201
0.401
0.601
0.801
1.001
1.201
Load Current: A
115Vac 60Hz
230Vac 50Hz
Figure 5. PF with 115 VAC and 230 VAC (Test Points: TP1, TP2, TP12 and TP13)
7.4
Power Factor at Full Load with Respect to Input Voltage
Figure 6
0.980
Power Factor at Full Load
0.960
0.940
0.920
0.900
0.880
0.860
0.840
0.820
0.800
90
.0
10
0.
0
11
0.
0
12
0.
0
13
0.
0
14
0.
0
15
0.
0
16
0.
0
17
0.
0
18
0.
0
19
0.
0
20
0.
0
21
0.
0
22
0.
0
23
0.
0
24
0.
0
25
0.
0
26
0.
0
26
5.
0
0.780
Input Voltage: Vac
(60Hz for 90Vac to 160Vac and 50Hz for 170Vac to 264Vac)
Figure 6. PF at Full Load (Test Points: TP1, TP2, TP12 and TP13)
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Performance Data and Typical Characteristic Curves
7.5
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Input Current Harmonic Content (IEC EN61000-3-2 Limits for Class D Equipment)
Input Harmonic Content
EVM
Limits
Current: mArms
1000.00
100.00
10.00
1.00
1
3
5
7
9
11 13 15 17 19 21 23 25 27 29 31 33 35 37 39
Harmonic Number
(230Vac, 50Hz, Full Load)
Figure 7. Harmonic Content with 230Vac Input (Vin = 230Vac at 50Hz, Io = 1.2A Test Points: TP1, TP2,
TP12 and TP13)
7.6
Input Current Harmonic Content (JIS61000-3-2 Limits for Class D Equipment)
Input Harmonic Content
EVM
Limits
Current: mArms
1000.00
100.00
10.00
1.00
1
3
5
7
9
11 13 15 17 19 21 23 25 27 29 31 33 35 37 39
Harmonic Number
(100Vac, 50Hz, Full Load)
Figure 8. Harmonic Content with 100 VAC Input (VIN = 100 VAC at 50 Hz, IO = 1.2 A Test Points: TP1, TP2,
TP12 and TP13 )
10
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7.7
Performance Data and Typical Characteristic Curves
No-Load Output Turn On
Figure 9. No-Load Turn On (VIN = 230 VAC at 50 Hz, IO = 0 A Test Points: TP12 and TP13 )
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Performance Data and Typical Characteristic Curves
7.8
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Output Voltage Ripple
Figure 10. Output Voltage Ripple (VIN = 230 VAC at 50 Hz, IO = 1.2 A Test Points: TP12 and TP13)
12
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7.9
Performance Data and Typical Characteristic Curves
Input Voltage and Current
Figure 11. Input Waveforms (VIN = 230 VAC at 50 Hz, IO = 1.2 A Test Points: TP1 and TP2)
7.10 EMI Performance Achievable on a Full 90-W Adapter Design (reference to SEM1900
topic 4)
NOTE: This EVM is not designed to meet the EMI standard. A reference design shown in SEM1900
does.
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Performance Data and Typical Characteristic Curves
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Figure 12. EMI Conducted Emission Test (Vin = 230Vac at 50Hz, Io = 1.2A)
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EVM Assembly Drawing and PCB layout
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EVM Assembly Drawing and PCB layout
The following figures (Figure 13 through Figure 18) show the design of the UCC29910AEVM-730 printed
circuit board. PCB dimensions: L x W = 6.1 inch x 3.0 inch, four layers and 2-oz copper on outer layers
and 1-oz copper on inner layers.
J4
L4
J5
Figure 13. UCC29910AEVM-730 Top Layer Assembly Drawing (top view)
Figure 14. UCC29910AEVM-730 Bottom Assembly Drawing (bottom view)
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EVM Assembly Drawing and PCB layout
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Figure 15. UCC29910AEVM-730 Top Copper (top view)
Figure 16. UCC29910AEVM-730 Internal Layer 1 (top view)
16
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EVM Assembly Drawing and PCB layout
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Figure 17. UCC29910AEVM-730 Internal Layer 2 (top view)
Figure 18. UCC29910AEVM-730 Bottom Copper (top view)
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List of Materials
9
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List of Materials
Table 3. The EVM Components List (according to the schematic shown in )
REF DES
18
QTY
DESCRIPTION
C1
1
Capacitor, metallized polyester film, 275 VAC, 20%, 330 nF
ECQ-U2A334ML
Panasonic
C10
1
Capacitor, ceramic, 630 V, 20%, 1206, 220 pF
std
std
C11
1
Capacitor, ceramic, 16 V, X7R, ±10%, 0805, 100 nF
std
std
C12, C15,
C22
3
Capacitor, ceramic, 16 V, X7R, ±10%, 0805, 10 nF
std
std
C14, C17
2
Capacitor, ceramic, 100 V, ±10%, 1206, 1 µF
std
std
C18
1
Capacitor, ceramic, 16 V, X7R, ±10%, 0805, 2.2 nF
std
std
C19, C20
2
Capacitor, aluminum, 100 V, 20%, 470 µF
EEU-FC2A471
Panasonic
C2
1
Capacitor, ceramic, 25 V, X7R, 20%, 47 µF
CKG57NX5R1E476M
TDK
C21
1
Capacitor, aluminum, 16 V, 20%, 100 µF
ECA1CM101
Panasonic
C23
1
Capacitor, ceramic, 50 V, X7R, ±10%, 0805, 100 nF
std
std
C3,
C4,C13
3
Capacitor, ceramic, 16 V, X7R, ±10%, 0805, 1 µF
std
std
C5
1
Capacitor, metallized polyproplene film, 450 VDC, 20%,
0.27 µF
ECW-F2W274JAQ
Panasonic
C6
1
Capacitor, metallized polyester film, 450 VDC, 20%, 1.2 µF
ECW-F2W125JA
Panasonic
C7
1
Capacitor, ceramic, 16 V, X7R, ±10%, 0805, 0.47 µF
std
std
C8, C9,
C16
3
Capacitor, ceramic, 630 V, 20%, 1206, 10 nF
std
std
D1, D7
2
Diode, switching, 150 mA, 75 V, 350 mW
BAS16
Onsemi
D2
1
Diode, super fast rectifier, 200 V, 1.0 A
ES1D
Fairchild
D3
1
Diode, Zener, 10 V, 20 mA, 225 mW, 5%, 10 V
BZX84C10LT1G
Onsemi
D4
1
Diode, Zener, 12 V, 20 mA, 225 mW, 5%, 12 V
BZX84C12LT1G
Onsemi
D5
1
Diode, bridge, 6 A, 600 V,
GBU6J
Vishay
D6
1
DIODE, hyperfast 6 A, 600 V
RHRD660S
Fairchild
D8
1
Adjustable precision shunt regulator, 0.5%
TLV431BQDBZT
TI
D9
1
Diode, Zener, 10 V, 20 mA, 225 mW, 5%, 15 V
BZX84C15LT1G
Onsemi
F1
1
Fuse, 3.15 A, 250 V, Slo-Blo, cartridge, 3.15 A
0213 002.
Littlefuse
J1, J3
2
Terminal block, 2 pin, 15 A, 5.1 mm,
ED500/2DS
OST
J2
1
Header, male 2-pin, 100mil spacing,
PEC02SAAN
Sullins
L1
1
Inductor, ± 3% at 100 kHz, 5 mH
750311982
WE
L2, L3
2
Inductor, ±10% at 100 kHz, 103 µH
750311983
WE
L4
1
Transformer, ±15%, 88 µH
750311885
WE
Q1
1
MOSFET, N-channel, 600 V, 7 mA
BSS126
Infineon
Q2, Q3,
Q4, Q8
4
MOSFET, N-channel, 100 V, 0.17 A
BSS123
Fairchild
Q5
1
MOSFET, N-channel, 650 V, 16 A, 0.199 Ω
IPB60R199CP
Infineon
Q6
1
Bipolar, NPN, 40 VCEO, 600 mA, 350 mW
MMBT2222AK
Fairchild
Q7
1
Transistor, PNP, -500 VCEO, -5 VEBO, 50 mA
FMMT560
Zetex
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Table 3. The EVM Components List (according to the schematic shown in ) (continued)
REF DES
QTY
DESCRIPTION
PART NUMBER
MFR
R1, R13
2
Resistor, chip, 1/8 W, 1%, 0805, 0 Ω
std
std
R11, R17,
R18, R35,
R36
5
Resistor, chip, 1/8 W, 1%, 0805, 10 kΩ
std
std
R12
1
Resistor, chip, 1/8 W, 1%, 0805, 680 kΩ
std
std
R14
1
Resistor, chip, 1/8 W, 1%, 0805, 3.3 kΩ
std
std
R15
1
Resistor, chip, 1/8 W, 1%, 0805, 56 kΩ
std
std
R16
1
Resistor, chip, 1/8 W, 1%, 0805, 0 Ω
std
std
R32
1
Resistor, chip, 1/4 W, 1%, 1206, 0.05 Ω
std
std
R19
1
Resistor, chip, 1/2 W, 1%, 1210, 0.15 Ω
std
std
R2, R10
2
Resistor, chip, 1/8 W, 1%, 0805, 300 kΩ
std
std
R20
1
Resistor, chip, 1/8 W, 1%, 0805, 100 kΩ
std
std
R21
1
Resistor, chip, 1/8 W, 1%, 0805, 10 Ω
std
std
R22
1
Resistor, chip, 1/8 W, 1%, 0805, 47 kΩ
std
std
R24, R25
2
Resistor, chip, 1/4 W, 1%, 1206, 2.2 MΩ
std
std
R26
1
Resistor, chip, 1/8 W, 1%, 0805, 13.7 kΩ
std
std
R27
1
Resistor, chip, 1/8 W, 1%, 0805, 270 kΩ
std
std
R28, R30
2
Resistor, chip, 1/4 W, 1%, 1206, 1 MΩ
std
std
R29
1
Resistor, chip, 1/8 W, 1%, 0805, 18 kΩ
std
std
R3
1
Resistor, chip, 1/8 W, 1%, 0805, 390 Ω
std
std
R31
1
Resistor, chip, 1/4 W, 1%, 1206, 330 kΩ
std
std
R33
1
Resistor, chip, 1/8 W, 1%, 0805, 143 kΩ
std
std
R34
1
Resistor, chip, 1/8 W, 1%, 0805, 30 kΩ
std
std
R4
1
Resistor, chip, 1/8 W, 1%, 0805, 1 MΩ
std
std
R5, R6
2
Resistor, chip, 1/4 W, 1%, 1206, 1.5 MΩ
std
std
R7, R9
2
Resistor, chip, 1/4 W, 1%, 1206, 51.1 kΩ
std
std
R8
1
Resistor, chip, 1/8 W, 1%, 0805,
std
std
R37
1
Resistor, chip, 1/2 W,1%, 1210, 1 kΩ
std
std
R23
1
Resistor, chip, 1/8 W,1%, 0805, 100 Ω
std
std
U1
1
50-mA LDO, 3.0 VO
TPS71533DCKR
TI
U2
1
MOSFET driver, inverting
TPS2828DBV
TI
U3
1
Buck PFC
UCC29910APW
TI
VR1, VR2
2
Varistor, 95 VAC
V150CH8
Littelfuse
VR3
1
Varistor, 369 VDC
V430CH8
Littelfuse
ZR1
1
Sidactor, 160 VS, 2.2A
P1300SCLRP
Littelfuse
ZR2
1
Sidactor, 130 VS, 2.2A
P1100SCLRP
Littelfuse
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FCC Warning
This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION
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can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15
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EVM Warnings and Restrictions
It is important to operate this EVM within the input voltage range of 90 VAC to 264 VAC and the output voltage range of 83 VDC to
87 VDC .
Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are
questions concerning the input range, please contact a TI field representative prior to connecting the input power.
Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the
EVM. Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load
specification, please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than 50° C. The EVM is designed to
operate properly with certain components above 50° C as long as the input and output ranges are maintained. These components
include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of
devices can be identified using the EVM schematic located in the EVM User's Guide. When placing measurement probes near
these devices during operation, please be aware that these devices may be very warm to the touch.
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