Using the UCC28911EVM-718
User's Guide
Literature Number: SLUUBA1
March 2015
User's Guide
SLUUBA1 – March 2015
Using the UCC28911EVM-718 7.5W Universal Off-Line
Flyback Converter with Primary-Side Regulation
1
Introduction
The UCC28911EVM-718 evaluation module is an offline flyback power supply that provides isolated
output voltage and current regulation without the use of an optocoupler. The input accepts a voltage range
of 85 VAC to 265 VAC, 47 Hz to 64 Hz.
2
Description
The evaluation module uses the UCC28911 CV/CC PWM HV Switcher. This device integrates a 700-V
power MOSFET and controller that processes operating information from an auxiliary flyback winding and
from the power MOSFET to provide precise output voltage and current control. Control algorithms in the
UCC28911 allow operating efficiencies to meet or exceed applicable standards. Discontinuous Conduction
Mode (DCM) with valley switching is used to reduce switching losses. A combination of switching
frequency and peak-primary current amplitude modulation is used to keep conversion efficiency high
across the full load and input voltage range. Figure 1 below details the output V-I characteristic.
Low-system parts count and built-in advanced protection features result in a cost-effective solution that
meets stringent world-wide energy efficiency requirements.
This user’s guide provides the schematic, component list, assembly drawing, art work, and test set up
necessary to evaluate the UCC28911 in a typical off-line converter application.
Typical Target Output V-I Characteristic
Output Voltage (V)
5
4
±5%
±5%
3
2
1
Typical
Application
1
1.5
Output Current (A)
2.0
Figure 1. Output Voltage as a Function of Output Load
2
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with Primary-Side Regulation
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Description
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2.1
Applications
The UCC28911 is suited for use in isolated off-line systems requiring high efficiency and advanced fault
protection features including:
• USB Compliant Adapters for Cell Phones, Tablets and Cameras
• 7-W to 10-W AC-to-DC Power Supplies
2.2
Features
The UCC28911EVM-718 features include:
• Isolated 7.5-W, 5-V Output
• Universal Off-Line Input Voltage Range
• Meets USB Specification 1.1
• Multiple Operating Modes and Valley Switching (for optimum efficiency over entire operating range)
• Primary-Side Control Eliminates Need for Optocoupler
• Output Over-Voltage Protection
• Input Under-Voltage Protection
• Primary Over-Current protection
• Thermal Shutdown
• Controlled Start Up and Restart After Fault Protection
CAUTION
High voltage levels are present on the evaluation module when energized.
Proper precautions must be taken when working with the EVM. The large bulk
capacitors, C1 and C2, and the output capacitors, C7 and C8, must be
completely discharged before the EVM can be handled. Serious injury can
occur if proper safety precautions are not followed.
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3
Electrical Performance Specifications
3
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Electrical Performance Specifications
Table 1. UCC28911EVM-718 Electrical Performance Specifications
PARAMETER
TEST CONDITIONS
Min
NOM
MAX
UNITS
Input Characteristics
VIN
Input voltage
85
115/230
265
V
fLINE
Frequency
PNL
No-load power
VIN = VNOM IOUT = 0 A
47
50/60
64
Hz
15
20
mW
VIN(uvlo)
Brownout voltage
IOUT = INOM
70
V
VINOV
Brownout recovery voltage
80
V
IIN
Input current
VIN = VMIN IOUT = IOUT(max)
0.3
A
Output Characteristics
VOUT
Output voltage
VIN = VMIN to VMAX IOUT = 0 to INOM
4.75
5
5.25
V
IOUT(max)
Maximum output current
VIN = VMIN to VMAX
IOUT(min)
Minimum output current
VIN = VMIN to VMAX
1.425
1.5
1.575
A
ΔVOUT
Output voltage ripple
VIN = VMIN to VMAX IOUT = 0 to INOM
150
mV
POUT
Output power
VIN = VMIN to VMAX
7.5
W
0
A
System Characteristics
η
Average efficiency
VIN = VNOM IOUT = 25%,
50%,,75%,,100% of IOUT
75%
Mechanical
W
L
H
4
Width
Dimensions
3.5
in
Length
5
in
Component Height
1
in
Using the UCC28911EVM-718 7.5W Universal Off-Line Flyback Converter
with Primary-Side Regulation
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J1
NEUTRAL
FKN1WSJR-52-4R7
4
~
~
D1
3
L2
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1mH
6.8k
R2
C1
10 F
400V
6.8k
R1
1mH
C2
10 F
400V
C4
0.1 F
33.0
R7
C5
10 F
D4
170V
D2
R8
30.0k
R10
430.0k
R9
100.0k
5
6
R5
1.50k
R6
100k
UCC28911D
VS
VDD
U1
C3
100pF
D3
GND
GND
GND
IPK
DRAIN
1
2
3
4
8 HV
R3
1.27k
600V
i
R4
15.0k
4
1
5
2
T1
7
6
8
9
D5
R11
180
C6
2200pF
2
1
3
C7
1200 F
C8
0.1 F
-VOUT
R12
6.8k
+VOUT
J2
+5V 1.5A
+VOUT
-VOUT
4
88 VAC TO 265 VAC
47 Hz TO 63 Hz
I IN MAX. =300 mA
LINE
NEUTRAL
LINE
RF1
L1
CAUTION! HIGH VOLTAGE
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Schematic
Schematic
Figure 2. UCC28911EVM-718 Schematic
Using the UCC28911EVM-718 7.5W Universal Off-Line Flyback Converter
with Primary-Side Regulation
5
Circuit Description
5
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Circuit Description
A brief description of the circuit elements follows:
• Diode Bridge D1, input capacitors C1 and C2, transformer T1, UCC28911 switcher U1, Schottky
rectifier D5 and capacitor C7 form the power stage of the converter.
NOTE: The UCC28911 U1 is also part of the power stage since the high-voltage MOSFET is
internal to U1.
•
•
•
•
•
•
•
•
•
•
•
•
6
Capacitor C8 filters the high-frequency noise directly across the electrolytic output capacitor.
The input EMI filter is made up of C1 and C2 and differential mode inductors, L2 and L3.
R1, R2 serve the dual function of dampening input filter oscillations and prevent a large voltage being
developed across L2 and L3 in the event of an ESD pulse.
Input-current protection is provided by fusible resistor, RF1.
Resistors R5 and R6, capacitor C3, and diodes D2 and D3 make up the primary-side voltage clamp.
The clamp prevents the drain voltage on U1 from exceeding its maximum rating. A secondary function
of the clamp is to alleviate the EMI currents associated with the turnoff voltage of U1.
Operating bias to the controller is provided by the auxiliary winding on T1, diode D4, resistor R7 and
bulk capacitor C5.
Capacitor C4 is a decoupling capacitor which should always be good quality low ESR/ESL type
capacitors placed as close to the device pins as possible and returned directly to the device ground
reference.
Secondary-side snubber C6 and R11are used to reduce the effects switching noise of D5.
Resistor R9 programs the start-up voltage threshold.
Resistors R8 and R10 program the output voltage set point.
Resistors R3 and R4 program the maximum output current.
Resistor R12 is used to adjust the no-load output voltage.
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EVM Test Set Up
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6
EVM Test Set Up
Figure 3 shows the equipment set up when measuring the input power consumption during no load.
During the no-load test, the power analyzer should be set for long averaging in order to include several
cycles of operation and an appropriate current scale factor should be used. Figure 4 shows the basic test
set up recommended to evaluate the UCC28911EVM-718 with a load.
WARNING
High voltages that may cause injury exist on this evaluation
module (EVM). Please ensure all safety procedures are followed
when working on this EVM. Never leave a powered EVM
unattended.
6.1
Test Equipment
See Figure 3 and Figure 4 for recommended test set ups.
AC Input Source: The input source shall be an isolated variable AC source capable of supplying between
85 VRMS and 265 VRMS at no less than 15 W and connected as shown in Figure 3 and Figure 4. For
accurate efficiency calculations, a power meter should be inserted between the AC source and the EVM.
For highest accuracy, connect the voltage terminals of the power meter directly across the power source.
NOTE: Connecting the voltage terminals directly to the EVM results in a small current error. This is
very significant when measuring no load power.
Load: For the output load, a programmable electronic load set to constant current mode and capable of
sinking 0 to 1.5 ADC at 10 VDC shall be used. For highest accuracy, VOUT can be monitored by connecting a
DC voltmeter, DMM V1, directly across the VOUT and –VOUT terminals as shown in Figure 3 and Figure 4. A
DC current meter, DMM A1, should be placed in series with the electronic load for accurate output current
measurements.
Power Meter: The power analyzer (PM1) shall be capable of measuring low-input current, typically less
than 100 µA, and a long averaging mode if low-power standby mode input-power measurements are to be
taken. An example of such an analyzer is the Yokogawa WT210 Digital Power Meter. To measure the
intermittent bursts of current and power drawn from the line during no-load operation, the WT210 should
be set to integrate.
Multimeters: Two digital multimeters are used to measure the regulated output voltage (DMM V1) and
load current (DMM A1).
Oscilloscope: A digital or analog oscilloscope with a 500-MHz scope probe is recommended.
Recommended Wire Gauge: a minimum of AWG 24 wire is recommended. The wire connections
between the AC source and the EVM, and the wire connections between the EVM and the load should be
less than two feet long.
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EVM Test Set Up
6.2
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Recommended Test Set Up for Operation Without a Load
V_HI
V_LO
A_HI
A_LO
LINE
AC
SOURCE
NEUT
+
-
DMM V1
Figure 3. UCC28911EVM-718 Recommended Test Set Up without a Load
6.3
Recommended Test Set Up for Operation With a Load
V_HI
V_LO
A_HI
A_LO
DMM A1
LINE
AC
SOURCE
NEUT
+
-
Electronic
Load
DMM V1
Figure 4. UCC28911EVM-718 Recommended Test Set Up With a Load
8
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Test Procedure
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7
Test Procedure
All tests should use the set up as described in Section 5 of this user’s guide. The following test procedure
is recommended primarily for power up and shutting down the evaluation module. Never leave a powered
EVM unattended for any length of time.
7.1
Applying Power to the EVM
1. Set up the EVM as shown in Section 6 of this user’s guide.
(a) If no-load input power measurements are to be made, set the power analyzer to long averaging or
integrating power measurement mode.
(b) For operation with a load, as shown in Figure 4, set the electronic load to constant resistance
mode.
2. Prior to turning on the AC source, set the voltage to between 85 VAC and 265 VAC.
3. Turn on the AC source.
4. Monitor the output voltage on DMM V1.
5. Monitor the output current on DMM A1.
6. The EVM is now ready for testing.
7.2
No-Load Power Consumption
1. Use the test set up shown in Figure 3.
(a) Set the power analyzer to integrating average power mode.
(b) Set the current measurement scale to 0.25 A.
(c) Set the voltage range to 300 V.
(d) Set the measurement mode to RMS.
2. Apply power to the EVM per Section 7.1.
3. Monitor the input power on the power analyzer while varying the input voltage.
4. Make sure the input power is off and the bulk capacitor and output capacitors are completely
discharged before handling the EVM.
7.3
Output Voltage Regulation and Efficiency
1. For load regulation:
(a) Use the test set up shown in Figure 4.
(b) Set the AC source to a constant voltage between 85 VAC and 265 VAC.
(c) Apply power to the EVM per Section 7.1.
(d) Vary the load current from 0 A up to 1.5 A, as measured on DMM A1.
(e) Observe that the output voltage on DMM V1 remains between 4.75 V and 5.25 V from no load up
to 1.5 A and thereafter the current remains between 1.425 A and 1.575 A until the output voltage
drops to 2 V or lower. See Figure 1 for details.
2. For line regulation:
(a) Set the load to sink 1.5 A.
(b) Vary the AC source from 85 VAC to 265 VAC.
(c) Observe that the output voltage on DMM V1 remains between 4.75 V and 5.25 V.
3. Make sure the input power is off and the bulk capacitor and output capacitors are completely
discharged before handling the EVM.
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Test Procedure
7.4
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Output Voltage Ripple
1. For output ripple measurements, solder a 0.1-µF, 50-V ceramic capacitor and 4.7-µF, 35-V tantalum
capacitor on a BNC adapter as shown in Figure 5 below. Connect the red test lead to the VOUT output
and the black test lead to the –VOUT on the EVM.
2. Connect the other end of the BNC cable to the oscilloscope and monitor the output ripple on the
oscilloscope.
3. Apply power to the EVM per Section 7.1.
Figure 5. Typical Example of Tip Measurement Technique
7.5
Equipment Shutdown
1. Ensure the load is at maximum; this quickly discharges the output capacitors.
2. Turn off the AC source.
3. Make sure the bulk capacitors, C1, C2 and output capacitor, C7 are completely discharged before
handling the EVM.
10
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with Primary-Side Regulation
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Performance Data and Typical Characteristic Curves
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8
Performance Data and Typical Characteristic Curves
Figure 6 through Figure 14 present typical performance curves for the UCC28911EVM-718.
6
100 VIN
115 VIN
230 VIN
265 VIN
Output Voltage (V)
5
4
3
2
1
1
1.1
1.2
1.3
Output Current (A)
1.4
1.5
1.6
D001
Figure 6. Typical V-I Characteristic
Table 2. Average and 10% Load Efficiency
VIN (V)
f (Hz)
PIN (W)
IOUT (A)
VOUT (V)
POUT (W)
Eff (%)
Avg Eff (%)
115
60
10.27
1.497
5.131
7.68
74.79
75.48
7.654
1.122
5.123
5.75
75.10
5.047
0.747
5.118
3.82
75.75
2.495
0.372
5.115
1.90
76.26
1.042
0.148
5.119
0.76
72.71
10.02
1.493
5.148
7.69
76.71
7.476
1.119
5.133
5.74
76.83
4.964
0.744
5.122
3.81
76.77
2.527
0.370
5.120
1.89
74.97
1.052
0.145
5.117
0.74
70.53
230
50
76.32
Table 3. No-Load Power Consumption
VIN (V)
f (Hz)
PIN (mW)
VOUT (V)
115
60
11.4
5.21
230
50
13.5
5.21
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Performance Data and Typical Characteristic Curves
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Table 4. Typical V-I Test Data
100 VAC
12
115 VAC
230 VAC
265 VAC
IOUT (A)
VOUT (V)
IOUT (A)
VOUT (V)
IOUT (A)
VOUT (V)
IOUT (A)
VOUT (V)
1.387
5.147
1.387
5.148
1.387
5.148
1.387
5.148
1.401
5.147
1.401
5.148
1.401
5.149
1.401
5.148
1.415
5.147
1.416
5.148
1.416
5.149
1.416
5.149
1.429
5.147
1.43
5.149
1.431
5.149
1.43
5.148
1.444
5.147
1.445
5.149
1.445
5.149
1.445
5.149
1.46
5.147
1.46
5.149
1.461
5.149
1.461
5.149
1.472
5.136
1.476
5.15
1.476
5.149
1.476
5.149
1.473
5.086
1.48
5.108
1.492
5.15
1.492
5.15
1.474
5.033
1.481
5.058
1.508
5.15
1.508
5.15
1.476
4.987
1.482
5.004
1.513
5.11
1.525
5.15
1.477
4.933
1.483
4.952
1.514
5.057
1.524
5.089
1.477
4.88
1.484
4.902
1.515
5.004
1.525
5.037
1.478
4.829
1.485
4.85
1.516
4.951
1.526
4.983
1.479
4.777
1.485
4.796
1.517
4.899
1.527
4.93
1.48
4.726
1.486
4.743
1.518
4.843
1.527
4.874
1.481
4.673
1.487
4.691
1.519
4.791
1.528
4.821
1.482
4.621
1.488
4.64
1.519
4.736
1.529
4.766
1.483
4.568
1.489
4.585
1.52
4.681
1.53
4.712
1.483
4.516
1.49
4.532
1.521
4.629
1.531
4.659
1.484
4.461
1.49
4.479
1.521
4.574
1.531
4.603
1.485
4.409
1.491
4.426
1.522
4.519
1.532
4.547
1.486
4.357
1.491
4.373
1.523
4.465
1.533
4.494
1.486
4.302
1.492
4.32
1.523
4.41
1.533
4.438
1.487
4.25
1.493
4.267
1.524
4.355
1.534
4.384
1.487
4.195
1.494
4.214
1.524
4.3
1.534
4.328
1.488
4.143
1.494
4.158
1.525
4.244
1.535
4.273
1.489
4.091
1.495
4.106
1.525
4.189
1.536
4.217
1.489
4.036
1.495
4.051
1.526
4.136
1.536
4.162
1.49
3.982
1.496
3.999
1.526
4.08
1.537
4.106
1.49
3.928
1.497
3.944
1.527
4.022
1.537
4.051
1.49
3.874
1.497
3.89
1.527
3.969
1.537
3.993
1.491
3.82
1.497
3.835
1.528
3.914
1.538
3.939
1.492
3.767
1.497
3.781
1.528
3.859
1.539
3.884
1.493
3.713
1.499
3.727
1.529
3.803
1.539
3.827
1.493
3.659
1.499
3.672
1.53
3.747
1.54
3.771
1.494
3.605
1.499
3.618
1.53
3.692
1.541
3.718
1.495
3.551
1.5
3.563
1.531
3.636
1.541
3.661
1.495
3.497
1.501
3.51
1.531
3.581
1.542
3.606
1.495
3.443
1.502
3.455
1.532
3.525
1.542
3.549
1.496
3.388
1.502
3.401
1.532
3.469
1.543
3.493
1.497
3.334
1.502
3.347
1.533
3.413
1.543
3.436
1.498
3.281
1.503
3.292
1.533
3.358
1.543
3.381
1.498
3.225
1.503
3.237
1.534
3.302
1.544
3.325
1.498
3.171
1.504
3.181
1.534
3.246
1.544
3.267
1.499
3.117
1.504
3.127
1.534
3.188
1.546
3.213
1.498
3.062
1.504
3.072
1.535
3.133
1.546
3.157
1.5
3.011
1.505
3.016
1.535
3.077
1.546
3.1
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Performance Data and Typical Characteristic Curves
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Table 4. Typical V-I Test Data (continued)
100 VAC
115 VAC
230 VAC
265 VAC
IOUT (A)
VOUT (V)
IOUT (A)
VOUT (V)
IOUT (A)
VOUT (V)
IOUT (A)
VOUT (V)
1.5
2.951
1.505
2.961
1.535
3.021
1.547
3.042
1.5
2.896
1.505
2.906
1.536
2.964
1.547
2.986
1.501
2.841
1.505
2.85
1.536
2.907
1.546
2.929
1.5
2.786
1.505
2.794
1.536
2.851
1.547
2.873
1.501
2.729
1.506
2.74
1.536
2.794
1.548
2.815
1.501
2.675
1.505
2.683
1.536
2.738
1.548
2.758
1.501
2.621
1.506
2.626
1.537
2.682
1.547
2.7
1.502
2.565
1.506
2.572
1.536
2.624
1.547
2.642
1.502
2.509
1.506
2.516
1.537
2.568
1.547
2.585
1.502
2.453
1.506
2.46
1.537
2.51
1.547
2.527
1.501
2.397
1.506
2.405
1.537
2.453
1.547
2.47
1.502
2.341
1.506
2.349
1.537
2.396
1.547
2.412
1.502
2.286
1.506
2.292
1.537
2.339
1.547
2.355
1.501
2.23
1.506
2.237
1.536
2.281
1.547
2.296
1.502
2.174
1.505
2.181
1.536
2.224
1.546
2.239
1.501
2.119
1.505
2.124
1.536
2.167
1.546
2.181
1.501
2.062
1.505
2.067
1.535
2.11
1.546
2.124
1.501
2.006
1.505
2.011
1.535
2.052
1.545
2.066
1.501
1.949
1.504
1.956
1.535
1.994
1.546
2.008
1.5
1.894
1.504
1.898
1.534
1.936
1.545
1.95
1.499
1.838
1.503
1.841
1.533
1.879
1.544
1.892
1.5
1.782
1.503
1.786
1.533
1.821
1.544
1.834
1.498
1.725
1.502
1.73
1.532
1.764
1.543
1.776
1.497
1.668
1.501
1.673
1.531
1.705
1.542
1.718
1.497
1.612
1.501
1.616
1.531
1.648
1.541
1.659
1.496
1.555
1.5
1.559
1.53
1.591
1.54
1.601
1.495
1.499
1.498
1.503
1.528
1.532
1.539
1.543
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13
Performance Data and Typical Characteristic Curves
www.ti.com
Figure 7. Ripple with 5 V, 1.5 A Out, 115 VAC in 20 mV/div 100 µs/div
Figure 8. Ripple with 5 V, 1 A Out, 115 VAC in 20 mV/div 100 µs/div
14
Using the UCC28911EVM-718 7.5W Universal Off-Line Flyback Converter
with Primary-Side Regulation
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Performance Data and Typical Characteristic Curves
www.ti.com
Figure 9. Step Load 1.5 A to 0.5 A, C4 200 mV/div, C3 2 A/div 200 ms/div
Figure 10. Step Load 1.5 A to 0 A, C4 500 mV/div, C3 2 A/div 200 ms/div
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15
Performance Data and Typical Characteristic Curves
www.ti.com
Figure 11. Output Voltage Start 115 VAC, 1.5-A load, 1 V/div 50 mS/div
Figure 12. Output Voltage Start, 230 VAC, 1.5-A load, 1 V/div 50 ms/div
16
Using the UCC28911EVM-718 7.5W Universal Off-Line Flyback Converter
with Primary-Side Regulation
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Performance Data and Typical Characteristic Curves
www.ti.com
Figure 13. Primary-Side Switching Waveforms 85 VAC
(1.5-A Load Drain Voltage, CH 1 100 V/div and Current, CH3 0.5 A/div 2 µs/div)
Figure 14. Primary-Side Switching Waveforms 265 VAC
(1.5-A Load Drain Voltage, CH 1 100 /div and Current,CH4 0.5 A/div 2 µs/div)
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17
EVM Assembly Drawing and Layout
9
www.ti.com
EVM Assembly Drawing and Layout
The following figures show the design of the UCC28911EVM-718 printed circuit board.
Figure 15. UCC28911EVM-718 (top view)
Figure 16. PCB (top)
18
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EVM Assembly Drawing and Layout
www.ti.com
Figure 17. PCB (bottom)
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19
List of Materials
10
www.ti.com
List of Materials
10.1 Flyback Transformer
10.1.1
•
•
•
•
•
10.1.2
Material List
EE16/8/5 ferrite core pair.
EE16/8/5 9-pin through hole, horizontal bobbin.
0.18-mm OD enamel copper wire.
0.35-mm Furukawa TEX-E triple insulated copper wire or equivalent.
10.6-mm wide mylar tape.
Winding Table
Table 5. Winding Table
WINDING
START
WDG 1
2
WDG 2
WDG 3
WDG 4
WDG 5
WDG 6
WDG 7
WDG 8
20
FINISH
5
4
x
1
3
6
7
x
4
4
NC
8
9
WIRE
WINDING
DIRECTION
TURNS
COMMENTS
0.18-mm OD
CW
50
WDG 1 is full single layer. Finish of WDG1
is lead out towards pin 2 and becomes
start of WDG2.
Tape
CW
2
0.18-mm OD
CW
49
10.6-mm
tape
CW
2
0.18-mm OD
CW
25
10.6-mm
tape
CW
2
0.18-mm OD
CW
25
10.6-mm
tape
CW
2
0.18-mm OD
CW
21
10.6-mm
tape
CW
2
0.18-mm OD
CW
28
10.6-mm
tape
CW
2
0.35-mm
TEX
CCW
6
10.6-mm
tape
CCW
2
0.35-mm
TEX
CCW
6
10.6-mm
tape
CCW
2
Using the UCC28911EVM-718 7.5W Universal Off-Line Flyback Converter
with Primary-Side Regulation
Copyright © 2015, Texas Instruments Incorporated
WDG 1 is full single layer. Finish of WDG1
is lead out towards pin 2 and becomes
start of WDG2.
WDG 3 wound bifilar. single layer
WDG 4 wound bifilar, single layer
WDG 5 wound bifilar. single layer
WDG 6 wound bifilar, single layer
WDG 7 wound bifilar
WDG 8 wound bifilar
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List of Materials
www.ti.com
10.1.3
Transformer Cross Section
Finish BLUE on pin 4
Finish GREEN on 8
Finish YELLOW on 9
Start BLUE on pin 1
Start BROWN on pin 3
Start GREEN on 6
Start YELLOW on 7
Finish BROWN on pin 4
Finish Brown Cut Here
Start BLUE on pin 4
Start BROWN is cut
Finish Blue is cut here
Finish on pin 5
CORE
Start on pin 2
Figure 18. Transformer Cross Section
10.1.4
Electrical Specifications
Table 6. Electrical Specifications
10.1.5
PARAMETER
PINS
DC resistance
1 to 4
0.685 Ω, 10%
DC resistance
2 to 5
2.680 Ω, 10%
DC resistance
6 to 9
Tie 6 to 7 and 8 to 9
Inductance
2 to 5
10 kHz,100 mV
825 µH, 10%
Dielectric
1 to 9
4500 VAC, 1 s
No breakdown
625 VAC, 1 s
No breakdown
Dielectric
1 to 5
Turns ratio
(2 to 5) and (1 to 4)
Turns ratio
(2 to 5) and (9 to 6)
TEST CONDITIONS
VALUE
0.021 Ω, 20%
4.71:1, 1%
Tie 6 to 7 and 8 to 9
16.5:1, 1%
Part View
Figure 19. Part View
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21
Detailed List of Materials
11
www.ti.com
Detailed List of Materials
Table 7. UCC28911EVM-718 List of Materials
QTY
12
DES
DESCRIPTION
MANUFACTURER
PART NUMBER
2
C1, C2
Capacitor, aluminum, 10 µF, 400 V, ±20%, 2.864788 Ω,
TH
Panasonic
EEUED2G100
1
C3
Capacitor, ceramic, 100 pF, 500 V, ±5%, C0G/NP0, 1206
Kemet
C1206C101JCGACT
U
1
C4
Capacitor, ceramic, 0.1 µF, 25 V, ±10%, X5R, 0603
AVX
06033D104KAT2A
1
C5
Capacitor, aluminum, 10 µF, 35 V, ±20%, TH
Nichicon
UVR1V100MDD1TA
0
C6
Capacitor, ceramic, 2200 pF, 50 V, ±10%, X7R, 0805
AVX
08055C222KAT2A
1
C7
Capacitor, aluminum, 1200 µF, 10 V, ±20%, TH
Panasonic
EEUFM1A122
1
C8
Capacitor, ceramic, 0.1 µF, 50 V, ±5%, X7R, 1206
AVX
12065C104JAT2A
1
D1
Diode, switching-bridge, 600 V, 1 A, TH
Diodes Inc.
DF06M
1
D2
Diode, TVS, Uni, 170 V, 600 W, SMB
ST Microelectronics
SMBJ170A-TR
1
D3
Diode, switching, 600 V, 1 A, TH
Vishay-Semiconductor 1N4937-E3
1
D4
Diode, switching, 200 V, 0.2 A, SOD-123
Diodes Inc.
BAV21W-7-F
1
D5
Diode, Schottky, 40 V, 10 A, PowerDI5
Diodes Inc.
PDS1040L-13
4
H109,
H110,
H111,
H112
Bumpon, hemisphere, 0.44 X 0.20, clear
3M
SJ-5303 (CLEAR)
2
J1, J2
Conn term block, 2 position, 5.08 mm, TH
Phoenix Contact
1715721
2
L1, L2
Inductor, shielded drum core, metal composite, 1 mH, 0.5
A, 1.7 Ω, TH
Wurth Elektronik
768772102
3
R1, R2,
R12
Resistor, 6.8 kΩ, 5%, 0.25 W, 1206
Vishay-Dale
CRCW12066K80JNE
A
1
R3
Resistor, 1.27 kΩ, 1%, 0.25 W, 1206
Vishay-Dale
CRCW12061K27FKE
A
1
R5
Resistor, 1.50 kΩ, 1%, 0.25 W, 1206
Vishay-Dale
CRCW12061K50FKE
A
1
R7
Resistor, 33.0 Ω, 1%, 0.25 W, 1206
Panasonic
ERJ-8ENF33R0V
1
R8
Resistor, 30.0 kΩ, 1%, 0.25 W, 1206
Panasonic
ERJ-8ENF3002V
1
R9
Resistor, 100.0 kΩ, 1%, 0.25 W, 1206
Vishay-Dale
CRCW1206100KFKE
A
1
R10
Resistor, 430.0 kΩ, 1%, 0.25 W, 1206
Yageo America
RC1206FR-07430KL
1
RF1
Resistor, 4.7 Ω, 5%, 1 W, fusible, TH
Yageo America
FKN1WSJR-52-4R7
0
R4
Resistor, 15.0 kΩ, 1%, 0.25 W, 1206
Vishay-Dale
CRCW120615K0FKE
A
0
R6
Resistor, 100 kΩ, 5%, 0.25 W, 1206
Vishay-Dale
CRCW1206100KJNE
A
0
R11
Resistor, 180 Ω, 5%, 0.25 W, 1206
Vishay-Dale
CRCW1206180RJNE
A
1
T1
Transformer, 825 µH
Wurth Elektronik
eiSos
750315369
1
U1
High-Voltage Flyback Switcher with Primary-Side
Regulation and Constant-Current Control, D0007A
Texas Instruments
UCC28911D
1
PCB
Printed Circuit Board
Any
PWR718
References
1. Datasheet, UCC28910, UCC28911 High-Voltage Flyback Switcher with Constant-Current Control,
Texas Instruments Literature Number, SLUS769.
22
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STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES
1.
Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or
documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein.
Acceptance of the EVM is expressly subject to the following terms and conditions.
1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility
evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not
finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For
clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions
set forth herein but rather shall be subject to the applicable terms and conditions that accompany such Software
1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,
or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production
system.
2
Limited Warranty and Related Remedies/Disclaimers:
2.1 These terms and conditions do not apply to Software. The warranty, if any, for Software is covered in the applicable Software
License Agreement.
2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM
to User. Notwithstanding the foregoing, TI shall not be liable for any defects that are caused by neglect, misuse or mistreatment
by an entity other than TI, including improper installation or testing, or for any EVMs that have been altered or modified in any
way by an entity other than TI. Moreover, TI shall not be liable for any defects that result from User's design, specifications or
instructions for such EVMs. Testing and other quality control techniques are used to the extent TI deems necessary or as
mandated by government requirements. TI does not test all parameters of each EVM.
2.3 If any EVM fails to conform to the warranty set forth above, TI's sole liability shall be at its option to repair or replace such EVM,
or credit User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the
warranty period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to
repair or replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall
be warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day
warranty period.
3
Regulatory Notices:
3.1 United States
3.1.1
Notice applicable to EVMs not FCC-Approved:
This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit
to determine whether to incorporate such items in a finished product and software developers to write software applications for
use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless
all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause
harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is
designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of
an FCC license holder or must secure an experimental authorization under part 5 of this chapter.
3.1.2
For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:
CAUTION
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.
FCC Interference Statement for Class A EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.
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FCC Interference Statement for Class B EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
•
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
3.2 Canada
3.2.1
For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210
Concerning EVMs Including Radio Transmitters:
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
Concernant les EVMs avec appareils radio:
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Concerning EVMs Including Detachable Antennas:
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.
Concernant les EVMs avec antennes détachables
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur
3.3 Japan
3.3.1
Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に
輸入される評価用キット、ボードについては、次のところをご覧ください。
http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page
3.3.2
Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan are NOT certified by
TI as conforming to Technical Regulations of Radio Law of Japan.
If User uses EVMs in Japan, User is required by Radio Law of Japan to follow the instructions below with respect to EVMs:
1.
2.
3.
Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal
Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for
Enforcement of Radio Law of Japan,
Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
EVMs, or
Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.
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【無線電波を送信する製品の開発キットをお使いになる際の注意事項】
本開発キットは技術基準適合証明を受けておりません。
本製品のご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注意ください。
1.
2.
3.
電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用
いただく。
実験局の免許を取得後ご使用いただく。
技術基準適合証明を取得後ご使用いただく。
なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。
上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。
日本テキサス・インスツルメンツ株式会社
東京都新宿区西新宿６丁目２４番１号
西新宿三井ビル
3.3.3
Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ
い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
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4
EVM Use Restrictions and Warnings:
4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT
LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling
or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information
related to, for example, temperatures and voltages.
4.3 Safety-Related Warnings and Restrictions:
4.3.1
User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user
guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and
customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input
and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or
property damage. If there are questions concerning performance ratings and specifications, User should contact a TI
field representative prior to connecting interface electronics including input power and intended loads. Any loads applied
outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible
permanent damage to the EVM and/or interface electronics. Please consult the EVM user 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, even with the inputs and outputs kept within the specified allowable ranges, some circuit
components may have elevated case temperatures. These components include but are not limited to linear regulators,
switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the
information in the associated documentation. When working with the EVM, please be aware that the EVM may become
very warm.
4.3.2
EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the
dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.
User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,
affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic
and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely
limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and
liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or
designees.
4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,
state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all
responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and
liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local
requirements.
5.
Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate
as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as
accurate, complete, reliable, current, or error-free.
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6.
Disclaimers:
6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY WRITTEN DESIGN MATERIALS PROVIDED WITH THE EVM (AND THE
DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL FAULTS." TI DISCLAIMS ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY
THIRD PARTY PATENTS, COPYRIGHTS, TRADE SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.
6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS AND
CONDITIONS SHALL BE CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY
OTHER INDUSTRIAL OR INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD
PARTY, TO USE THE EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY
INVENTION, DISCOVERY OR IMPROVEMENT MADE, CONCEIVED OR ACQUIRED PRIOR TO OR AFTER DELIVERY OF
THE EVM.
7.
USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS
LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,
EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY
HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS AND CONDITIONS. THIS OBLIGATION
SHALL APPLY WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY
OTHER LEGAL THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.
8.
Limitations on Damages and Liability:
8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE,
INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE
TERMS ANDCONDITIONS OR THE USE OF THE EVMS PROVIDED HEREUNDER, REGARDLESS OF WHETHER TI HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED
TO, COST OF REMOVAL OR REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES, RETESTING, OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS,
LOSS OF SAVINGS, LOSS OF USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL
BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED.
8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY WARRANTY OR OTHER OBLIGATION
ARISING OUT OF OR IN CONNECTION WITH THESE TERMS AND CONDITIONS, OR ANY USE OF ANY TI EVM
PROVIDED HEREUNDER, EXCEED THE TOTAL AMOUNT PAID TO TI FOR THE PARTICULAR UNITS SOLD UNDER
THESE TERMS AND CONDITIONS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE CLAIMED. THE EXISTENCE
OF MORE THAN ONE CLAIM AGAINST THE PARTICULAR UNITS SOLD TO USER UNDER THESE TERMS AND
CONDITIONS SHALL NOT ENLARGE OR EXTEND THIS LIMIT.
9.
Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s)
will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in
a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable
order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s),
excluding any postage or packaging costs.
10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas,
without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to
these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas.
Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief
in any United States or foreign court.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2015, Texas Instruments Incorporated
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IMPORTANT NOTICE
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changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
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supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
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TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
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