Demonstration System
EPC9114
Quick Start Guide
EPC2107 and EPC2036
6.78 MHz, ZVS Class-D Wireless Power System
QUICK START GUIDE
Demonstration System EPC9114
DESCRIPTION
The EPC9114 wireless power system comprises the three boards
(shown in Figure 1) namely:
1) A Source Board (Transmitter or Power Amplifier) EPC9510
2) A Class 2 A4WP compliant Source Coil (Transmit Coil)
3) A Category 3 A4WP compliant Device Coil with rectifier and DC
smoothing capacitor.
The amplifier board features the enhancement-mode half-bridge
field effect transistor (FET), the 100 V rated EPC2107 eGaN FET with
integrated synchronous bootstrap FET. The amplifier is configured for
single ended operation and includes the gate driver/s, oscillator, and
feedback controller for the pre-regulator that ensures operation for
wireless power control based on the A4WP standard. This allows for
testing compliant to the A4WP class 2 standard over the entire load
range of ±35j Ω. The pre-regulator features the 100 V rated 65 mΩ
EPC2036 as the main switching device for a SEPIC converter.
The amplifier is equipped with a pre-regulator controller that adjusts
the voltage supplied to the ZVS class D amplifier based on the limits
of 3 parameters; coil current, DC power delivered and maximum
voltage. The coil current has the lowest priority followed by the power
delivered with the amplifier supply voltage having the highest priority.
Changes in the device load power demand, physical placement of the
device on the source coil and other factors such as metal objects in
proximity to the source coil all contribute to variations in coil current,
DC power and amplifier voltage requirements. Under any conditions,
the controller will ensure the correct operating conditions for the ZVS
class D amplifier based on the A4WP standard.
The Source coil used in this wireless power transfer demo system is
provided by NuCurrent (nucurrent.com). Reverse Engineering of the
Source coil is prohibited and protected by multiple US and international
patents. For additional information on the source coil, please contact
NuCurrent direct or EPC for contact information.
MECHANICAL ASSEMBLY
The assembly of the EPC9114 Wireless Demonstration kit is simple and
shown in Figure 1. The source coil and amplifier have been equipped
with SMA connectors. The source coil is simply connected to the amplifier.
The device board does not need to be mechanically attached to the
source coil.
DETAILED DESCRIPTION
The Amplifier Board (EPC9510)
Figure 2 shows the system block diagram of the EPC9510 ZVS class-D
amplifier with pre-regulator and Figure 3 shows the details of the ZVS
class-D amplifier section. The pre-regulator is used to control the ZVS
class-D wireless power amplifier based on three feedback parameters
1) the magnitude of the coil current indicated by the green LED, 2) the
DC power drawn by the amplifier indicated by the yellow LED and 3)
a maximum supply voltage to the amplifier indicated by the red LED.
Only one parameter at any time is used to control the pre-regulator
with the highest priority being the maximum voltage supplied to the
amplifier followed by the power delivered to the amplifier and lastly the
magnitude of the coil current. The maximum amplifier supply voltage
is pre-set to 66 V and the maximum power drawn by the amplifier is
pre-set to 10 W. The coil current magnitude is pre-set to 580 mARMS,
but can be made adjustable using P25. The pre-regulator comprises a
SEPIC converter that can operate at full power from 17 V through 24 V.
The pre-regulator can be bypassed to allow testing with custom control
hardware. The board further allows easy access to critical measurement
nodes that allow accurate power measurement instrumentation
hookup. A simplified diagram of the amplifier board is given in Figure 2.
The device board includes a high frequency schottky diode based full
bridge rectifier and output filter to deliver a filtered unregulated DC
voltage. The device board comes equipped with two LED’s, one green
to indicate the power is being received with an output voltage equal
or greater than 4 V and a second red LED that indicates that the output
voltage has reached the maximum and is above 37 V.
For more information on the EPC2107 and EPC2036 eGaN FETs please
refer to the datasheet available from EPC at www.epc-co.com. The
datasheet should be read in conjunction with this quick start guide.
2 |
80 mm
47 mm
The Source and Device Coils are Alliance for Wireless Power (A4WP)
compliant and have been pre-tuned to operate at 6.78 MHz with the
EPC9510 amplifier. The source coil is Class 2 and the device coil is
Category 3 compliant.
50 mm
Amplifier Board
150 mm
The EPC9114 wireless power demonstration system is a high efficiency,
A4WP compatible, Zero Voltage Switching (ZVS), Voltage Mode class-D
wireless power transfer demonstration kit capable of delivering up to
10 W into a DC load while operating at 6.78 MHz (Lowest ISM band).
The purpose of this demonstration system is to simplify the evaluation
process of wireless power technology using eGaN® FETs.
57 mm
Device Board
Figure 1: EPC9114
Demonstration System
Source Coil
103 mm
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QUICK START GUIDE
Demonstration System EPC9114
Table 1: Performance Summary (TA = 25°C) EPC9510
Symbol
Parameter
Conditions
Min
Max
Units
VIN
Bus Input Voltage Range – PreRegulator Mode
Also used in
bypass mode
for logic supply
17
24
V
VIN
Amp Input Voltage Range – Bypass
Mode
0
80
V
VOUT
Switch Node Output Voltage
66
V
IOUT
Switch Node Output Current (each)
0.8*
A
Vextosc
External Oscillator Input Threshold
Input ‘Low’
-0.3
0.8
V
Input ‘High’
2.4
5
V
VPre_Disable
Pre-regulator Disable
Voltage Range
Floating
-0.3
5.5
V
IPre_Disable
Pre-regulator Disable
Current
Floating
-10
10
mA
VOsc_Disable
Oscillator Disable
Voltage Range
Open Drain/
Collector
-0.3
5
V
IOsc_Disable
Oscillator Disable
Current
Open Drain/
Collector
-25
25
mA
VSgnDiff
Differential or Single Select Voltage
Open Drain/
Collector
-0.3
5.5
V
Differential or Single Select Current
Open Drain/
Collector
-1
1
mA
ISgnDiff
* Maximum current depends on die temperature – actual maximum current will be subject to switching
frequency, bus voltage and thermals.
Table 2: Performance Summary (TA = 25 °C) Category 3 Device Board
Symbol
Parameter
VOUT
IOUT
Conditions
Min
Max
Units
Output Voltage Range
0
38
V
Output Current Range
0
1.5#
A
# Actual maximum current subject to operating temperature limits
The pre-regulator can be bypassed by connecting the positive
supply directly to the ZVS class-D amplifier supply after removing
the jumper at location JP1 and connecting the main positive
supply to the bottom pin. JP1 can also be removed and replaced
with a DC ammeter to directly measure the current drawn by
the amplifier. When doing this observe a low impedance
connection to ensure continued stable operation of the controller.
Together with the Kelvin voltage probes (TP1 and TP2) connected
to the amplifier supply, an accurate measurement of the power
drawn by the amplifier can be made.
The pre-regulator can also be disabled in a similar manner as the oscillator
using JP50. However, note that this connection is floating with respect to
the ground so removing the jumper for external connection requires a
floating switch to correctly control this function. Refer to the datasheet of
the controller IC and the schematic in this QSG for specific details.
The EPC9510 is provided with 3 LED’s that indicate the mode of
operation of the system. If the system is operating in coil current limit
mode, then the green LED will illuminate. For power limit mode, the
yellow LED will illuminate. Finally, when the pre-regulator reaches
maximum output voltage the red LED will illuminate indicating that
the system is no longer A4WP compliant as the load impedance
is too high for the amplifier to drive. When the load impedance
is too high to reach power limit or voltage limit mode, then the current
limit LED will illuminate incorrectly indicating current limit mode. This
mode also falls outside the A4WP standard and by measuring the
amplifier supply voltage across TP1 and TP2 will show that it has nearly
reach the maximum value limit.
ZVS Timing Adjustment
Setting the correct time to establish ZVS transitions is critical
to achieving high efficiency with the EPC9510 amplifier. This
can be done by selecting the values for R71 and R72 or P71
and P72 respectively. This procedure is best performed using a
potentiometer installed at the appropriate locations that is used to
determine the fixed resistor values. The timing MUST initially be set
WITHOUT the source coil connected to the amplifier. The timing
diagrams are given in Figure 10 and should be referenced when
following this procedure. Only perform these steps if changes have
been made to the board as it is shipped preset. The steps are:
1. With power off, remove the jumper in JP1 and install it into JP50 to
place the EPC9510 amplifier into Bypass mode. Connect the main input
power supply (+) to JP1 (bottom pin – for bypass mode) with ground
connected to J1 ground (-) connection.
2. With power off, connect the control input power supply bus (19 V) to
(+) connector J1. Note the polarity of the supply connector.
3. Connect a LOW capacitance oscilloscope probe to the probe-hole of
the half-bridge to be set and lean against the ground post as shown in
Figure 9.
4. Turn on the control supply – make sure the supply is approximately 19 V.
The EPC9510 is also provided with a miniature high efficiency
switch-mode 5 V supply to power the logic circuits on board such as
the gate drivers and oscillator.
5. Turn on the main supply voltage starting at 0 V and increasing to the
required predominant operating value (such as 24 V but NEVER exceed
the absolute maximum voltage of 66 V).
The amplifier comes with its own low supply current oscillator that is
pre-programmed to 6.78 MHz ± 678 Hz. It can be disabled by placing
a jumper into JP70 or can be externally shutdown using an externally
controlled open collector / drain transistor on the terminals of JP70
(note which is the ground connection). The switch needs to be capable
of sinking at least 25 mA. An external oscillator can be used instead
of the internal oscillator when connected to J70 (note which is the
ground connection) and the jumper (JP71) is removed.
6.
While observing the oscilloscope adjust the applicable
potentiometers to so achieve the green waveform of Figure 10.
7. Replace the potentiometers with fixed value resistors if required.
Remove the jumper from JP50 and install it back into JP1 to revert the
EPC9510 back to pre-regulator mode.
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QUICK START GUIDE
Demonstration System EPC9114
Determining component values for LZVS
QUICK START PROCEDURE
The ZVS tank circuit is not operated at resonance, and only provides the
necessary negative device current for self-commutation of the output
voltage at turn off. The capacitor CZVS1 is chosen to have a very small
ripple voltage component and is typically around 1 µF. The amplifier
supply voltage, switch-node transition time will determine the value of
inductances for LZVS1 and LZVS2 which needs to be sufficient to maintain
ZVS operation over the DC device load resistance range and coupling
between the device and source coil range and can be calculated using
the following equation:
The EPC9114 demonstration system is easy to set up and evaluate the
performance of the eGaN FET in a wireless power transfer application.
Refer to Figure 1 to assemble the system and Figures 6 through 8 for
proper connection and measurement setup before following the
testing procedures.
The EPC9510 can be operated using any one of two alternative
methods:
a. Using the pre-regulator.
b. By-passing the pre-regulator.
LZVS =
∆tvt
8 ∙ fsw∙ COSSQ + Cwell
(1)
Where:
Δtvt
= Voltage transition time [s]
ƒSW
= Operating frequency [Hz]
COSSQ
= Charge equivalent device output capacitance [F].
Cwell
= Gate driver well capacitance [F]. Use 20 pF for the LM5113
NOTE. the amplifier supply voltage VAMP is absent from the equation as it
is accounted for by the voltage transition time. The COSS of the EPC2107
eGaN FETs is very low and lower than the gate driver well capacitance
Cwell which as a result must be now be included in the ZVS timing
calculation. The charge equivalent capacitance can be determined using
the following equation:
VAMP
1
(2)
COSSQ =
∙
COSS (v) ∙ dv
VAMP 0
∫
To add additional immunity margin for shifts in coil impedance, the value
of LZVS can be decreased to increase the current at turn off of the devices
(which will increase device losses). Typical voltage transition times range
from 2 ns through 12 ns.
The Source Coil
Figure 4 shows the schematic for the source coil which is Class 2 A4WP
compliant. The matching network includes both series and shunt tuning.
The matching network series tuning is differential to allow balanced
connection and voltage reduction for the capacitors.
The Device Board
Figure 5 shows the basic schematic for the device coil which is Category
3A4WP compliant. The matching network includes both series and
shunttuning. The matching network series tuning is differential to
allow balanced connection and voltage reduction for the capacitors.
The device board comes equipped with a kelvin connected output
DC voltage measurement terminal and a built in shunt to measure the
output DC current. Two LEDs have been provided to indicate that the
board is receiving power with an output voltage greater than 4 V (green
LED) and that the board output voltage limit has been reached (greater
than 36 V using the red LED).
4 |
a. Operation using the pre-regulator
The pre-regulator is used to supply power to the amplifier in this mode
and will limit the coil current, power delivered or maximum supply
voltage to the amplifier based on the pre-determined settings.
The main 19 V supply must be capable of delivering 2 ADC. DO NOT
turn up the voltage of this supply when instructed to power up
the board, instead simply turn on the supply. The EPC9510 board
includes a pre-regulator to ensure proper operation of the board
including start up.
1. Make sure the entire system is fully assembled prior to making
electrical connections and make sure jumper JP1 is installed. Also
make sure the source coil and device coil with load are connected.
2. With power off, connect the main input power supply bus to J1 as
shown in Figure 7. Note the polarity of the supply connector.
3. Make sure all instrumentation is connected to the system.
4. Turn on the main supply voltage to the required value (19 V).
5. Once operation has been confirmed, observe the output voltage,
efficiency and other parameters on both the amplifier and
device boards.
6. For shutdown, please follow steps in the reverse order.
b. Operation bypassing the pre-regulator
In this mode, the pre-regulator is bypassed and the main power is
connected directly to the amplifier. This allows the amplifier to be
operated using an external regulator. In this mode there is no protection
for ensuring the correct operating conditions for the eGaN FETs.
1. Make sure the entire system is fully assembled prior to making
electrical connections and make sure jumper JP1 has been removed
and installed in JP50 to disable the pre-regulator and place the
EPC9510 in bypass mode. Also make sure the source coil and device
coil with load are connected.
2. With power off, connect the main input power supply bus to the
bottom pin of JP1 and the ground to the ground connection of J1 as
shown in Figure 7.
3. With power off, connect the control input power supply bus to J1.
Note the polarity of the supply connector. This is used to power the
gate drivers and logic circuits.
4. Make sure all instrumentation is connected to the system.
5. Turn on the control supply – make sure the supply is 19 V range.
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Demonstration System EPC9114
6. Turn on the main supply voltage to the required value (it is
recommended to start at 0 V and do not exceed the absolute
maximum voltage of 80 V).
7. Once operation has been confirmed, adjust the main supply voltage
within the operating range and observe the output voltage, efficiency
and other parameters on both the amplifier and device boards.
8. For shutdown, please follow steps in the reverse order. Start by
reducing the main supply voltage to 0 V followed by steps 6 through 2.
NOTE.
1. When measuring the high frequency content switch-node (Source Coil Voltage), care
must be taken to avoid long ground leads. An oscilloscope probe connection (preferred
method) has been built into the board to simplify the measurement of the Source Coil
voltage (shown in Figure 9).
SEPIC
Pre-Regulator
1 VDC – ZVS Class-D
Amplifier
66 VDC
19 VDC
Coil
|Icoil |
2. You may experience audible noise emanating from the inductor of the SEPIC converter.
This is due to a minor instability. This minor instability does not impact the performance
of the power amplifier or the protection circuitry of the system.
I coil
VAMP
3. AVOID using a Lab Benchtop programmable DC as the load for the category 3 device
board. These loads have low control bandwidth and will cause the EPC9114 system to
oscillate at a low frequency and may lead to failure. It is recommended to use a fixed low
inductance resistor as an initial load. Once a design matures, a post regulator, such as a
Buck converter, can be used.
THERMAL CONSIDERATIONS
CS
IAMP
X
Combiner
PAMP
Control Reference Signal
Figure 2: Block diagram of the EPC9510 wireless power amplifier
The EPC9114 demonstration system showcases the EPC2107 and
EPC2036 eGaN FETs in a wireless energy transfer application. Although
the electrical performance surpasses that of traditional silicon devices,
their relatively smaller size does magnify the thermal management
requirements. The operator must observe the temperature of the gate
driver and eGaN FETs to ensure that both are operating within the
thermal limits as per the datasheets.
NOTE. The EPC9114 demonstration system has limited current protection only when
operating off the Pre-Regulator. When bypassing the pre-regulator there is no current
protection on board and care must be exercised not to over-current or over-temperature
the devices. Excessively wide coil coupling and load range variations can lead to increased
losses in the devices.
Bypass Mode
Connection
Pre-Regulator
Jumper
VAMP
Pre-Cautions
The EPC9114 demonstration system has no enhanced protection
systems and therefore should be operated with caution. Some specific
precautions are:
1. Never operate the EPC9114 system with a device board that is A4WP
compliant as this system does not communicate with the device to
correctly setup the required operating conditions and doing so can
lead to failure of the device board. Contact EPC should operating
the system with an A4WP compliant device is required to obtain
instructions on how to do this. Please contact EPC at info@epc-co.com
should the tuning of the coil be required to change to suit specific
conditions so that it can be correctly adjusted for use with the ZVS
class-D amplifier.
JP1
PreRegulator
Coil
Connection
Q1
VIN
+
J1
Q2
LZVS
CZVS
Figure 3: Diagram of EPC9510 amplifier circuit
2. There is no heat-sink on the devices and during experimental
evaluation it is possible present conditions to the amplifier that may
cause the devices to overheat. Always check operating conditions and
monitor the temperature of the EPC devices using an IR camera.
3. Never connect the EPC9510 amplifer board into your VNA in an
attempt to measure the output impedance of the amplifier. Doing so
will severely damage the VNA.
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QUICK START GUIDE
Demonstration System EPC9114
Matching
Impedance
Network
Class 2
Coil
Matching
Impedance
Network
Coil
Connection
Un-Regulated
DC output
Cat. 3
Coil
Source Coil
Device Board
Figure 4: Basic schematic of the A4WP Class 2 Source Coil
Figure 5: Basic Schematic of the A4WP Category 3 Device Board
Voltage
Source Jumper
Bypass Connection
17-24 VDC
V IN Supply
(Note Polarity)
Pre-Regulator Jumper
Operating Mode LED
Indicators
+
Coil Current Setting
Switch-node
Pre-Regulator
Oscilloscope probe
Switch-node Main
Oscilloscope Probe
Ground Post
Ground Post
Amplifier
Timing Setting
(Not Installed)
Source Coil
Connection
Internal Oscillator
Selection Jumper
Disable Pre-Regulator
Jumper
Disable
Oscillator
Jumper
V
Amplifier
Supply Voltage
(0 V – 80 V max. )
External
Oscillator
Figure 6: Proper Connection and Measurement Setup for the Amplifier Board
6 |
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Demonstration System EPC9114
Source Board
Connection
Matching with
trombone tuning
Figure 7: Proper connection for the source coil
External Load
Connection
Output Voltage
> 5 V LED
Output Voltage
> 37 V LED
Standoffs for Mechanical
attachment to Source Coil
to these locations (x5)
Device Output
mV
Current
(300 m Shunt)
Device Output
Voltage
(0 V – 38 Vmax)
A
Load Current
V
(See Notes for details)
* ONLY to be used with
Shunt removed
Matching
Figure 8: Proper connection and measurement setup for the device board
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QUICK START GUIDE
Demonstration System EPC9114
Do not use
probe ground lead
Ground
probe
against
post
Place probe tip
in large via
Minimize
loop
Figure 9: Proper Measurement of the Switch Nodes using the hole and ground post
Q1 turn-off
Q2 turn-off
VAMP
VAMP
Q2 turn-on
0
Partial
Shoot- ZVS
through
Q1 turn-on
time
ZVS
0
Partial
Shoot- ZVS
through
ZVS + Diode
Conduction
time
ZVS
ZVS + Diode
Conduction
Figure 10: ZVS Timing Diagrams
8 |
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Demonstration System EPC9114
Table 3: Bill of Materials - Amplifier Board
Item
Qty
Reference
Part Description
Manufacturer
Part #
1
2
3
4
5
6
2
8
2
1
1
1
C1, C80
C2, C4, C51, C70, C71, C72, C81, C130
C3, C95
C5
C20
C45
1 µF, 10 V
100 nF, 16 V
22 nF, 25 V
DNP (100 nF, 16 V)
DNP (10 nF, 50 V)
DNP (10 nF, 100 V)
TDK
Würth
Würth
Würth
Murata
Murata
C1005X7S1A105M050BC
885012205037
885012205052
885012205037
GRM155R71H103KA88D
C1005X7S2A103K050BB
7
1
C73
DNP (22 pF, 50 V)
Würth
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
1
1
1
5
2
3
1
1
2
1
2
1
2
1
3
1
1
2
7
2
1
1
1
1
1
1
2
1
1
5
1
1
1
1
2
1
2
1
1
1
2
1
1
1
2
1
1
1
C133
R20
R45
C6, C7, C31, C44, C82
C11, C12
C15, C64, C65
C21
C22
C30, C50
C32
C43, C53
C52
C61, C62
C63
C90, C91, C92
C131
Czvs1
D1, D95
D2, D21, D40, D41, D42, D71, D72
D3, D20
D4
D35
D36
D37
D60
D90
GP1, GP60
J1
J2
J70, JP1, JP50, JP70, JP71
L60
L80
L90
Lsns
Lzvs1, Lzvs2
P25
P71, P72
Q1
Q60
Q61
R2, R82
R3
R4
R21
R25, R133
R26
R30
R31
DNP (1 nF, 50 V)
DNP (10k)
DNP (1.5k)
22 pF, 50 V
10 nF, 100 V
2.2 µF, 100 V
680 pF, 50 V
1 nF, 50 V
100 nF, 100 V
47 nF, 25 V
10 nF, 50 V
100 pF
4.7 µF, 50 V
10 µF, 35 V
1 µF, 25 V
1 nF, 50 V
1 µF, 50 V
40 V, 300 mA
40 V, 30 mA
DNP (40 V, 30 mA)
5 V1, 150 mW
LED 0603 Yellow
LED 0603 Green
LED 0603 Red
100 V, 1A
40 V, 1A
.1" mAle Vert.
.156" mAle Vert.
S mA Board Edge
.1" mAle Vert.
100 µH, 2.2A
10 µH, 150 mA
47 µH, 250 mA
110 nH
390 nH
DNP (10k)
DNP (1k)
100 V, 220 mΩ with SB
100 V, 65 mΩ
DNP (100 V, 6A, 30mΩ)
20 Ω
27 k
4.7 Ω
100k
6.8k, 1%
2.8k, 1%
100 Ω
71k5, 1%
Murata
Panasonic
Panasonic
Würth
TDK
Taiyo Yuden
Murata
Murata
Murata
Murata
Murata
Murata
Taiyo Yuden
Taiyo Yuden
Würth
Murata
Würth
ST
Diodes Inc.
Diodes Inc.
Bournes
Lite-On
Lite-On
Lite-On
On-Semi
Diodes Inc.
Würth
Würth
Linx
Würth
CoilCraft
Taiyo Yuden
Würth
CoilCraft
CoilCraft
Murata
Murata
EPC
EPC
EPC
Stackpole
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
ERJ-2GEJ103X
ERJ-2RKF1501X
885012005057
C1005X7S2A103K050BB
HMK325B7225KN-T
GRM155R71H681KA01D
GRM155R71H102KA01D
GRM188R72A104KA35D
GRM155R71E473KA88D
GRM155R71H103KA88D
GRM1555C1H101JA01D
UMK325BJ475MM-T
GMK325BJ106KN-T
885012206076
GRM1555C1H102JA01D
885012207103
BAT54KFILM
SDM03U40
SDM03U40
CD0603-Z5V1
LTST-C193KSKT-5A
LTST-C193KGKT-5A
LTST-C193KRKT-5A
MBRS1100T3G
PD3S140-7
61300111121
645002114822
CONSAM003.062
61300211121
MSD1260-104ML
LBR2012T100K
7440329470
2222SQ-111JE
2929SQ-391JE
PV37Y103C01B00
PV37Y102C01B00
EPC2107
EPC2036
EPC2007C
RMCF0402JT20R0
ERJ-2GEJ273X
ERJ-2GEJ4R7X
ERJ-2GEJ104X
ERJ-2RKF6801X
ERJ-2RKF2801X
ERJ-3EKF1000V
ERJ-6ENF7152V
(continued on next page)
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| 9
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Demonstration System EPC9114
Table 3: Bill of Materials - Amplifier Board (continued)
10 |
Item
Qty
Reference
Part Description
Manufacturer
Part #
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
1
1
2
1
2
2
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
R32
R33
R35, R36
R37
R38, R91
R40, R130
R41, R131
R42
R43
R44, R90
R50
R51
R52
R53
R54
R60
R61
R70
R71
R72
R73
R80
R92
R132
R134
TP1, TP2
Tsns
U1
U30
U50
U70
U71
U72
U80
U90
U130
8.2k, 1%
75k
634 Ω
150k, 1%
49.9k, 1%
261k
6.04k
24.9k
10.5k
100k, 1%
10 Ω
124k, 1%
71.5k, 1%
1.00k
0Ω
80 mΩ, 0.4 W
300 mΩ, 0.125 W
47k
430 Ω
180 Ω
10k
2.2 Ω
9.53k 1%
18k 1%
470k
SMD Probe Loop
10 µH, 1:1, 96.9%
100 V, eGaN Driver
Power & Current Monitor
Boost Controller
Programmable Oscillator
2 In NAND
2 In AND
Gate Driver with LDO
1.4 MHz, 24 V, 0.5 A Buck
Comparator
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Yageo
Vishay Dale
Vishay Dale
Panasonic
Panasonic
Panasonic
Panasonic
Yageo
Panasonic
Panasonic
Panasonic
Keystone
CoilCraft
Texas Instruments
Linear
Texas Instruments
KDS Daishinku
Fairchild
Fairchild
Texas Instruments
MPS
Texas Instruments
ERJ-2RKF8201X
ERJ-2GEJ753X
ERJ-2RKF6340X
ERJ-2RKF1503X
ERJ-2RKF4992X
ERJ-3EKF2613V
ERJ-2RKF6041X
ERJ-2RKF2492X
ERJ-2RKF1052X
ERJ-2RKF1003X
ERJ-3EKF10R0V
ERJ-2RKF1243X
ERJ-2RKF7152X
ERJ-2RKF1001X
RC0402JR-070RL
WSLP0603R0800FEB
RL0805FR-070R3L
ERJ-2RKF4702X
ERJ-2RKF4300X
ERJ-2RKF1800X
ERJ-2GEJ103X
RC0402JR-072R2L
ERJ-2RKF9531X
ERJ-2RKF1802X
ERJ-2RKF4703X
5015
PFD3215-103ME
LM5113TM
LT2940IMS#PBF
LM3478MAX/NOPB
DSO221SHF 6.780
NC7SZ00L6X
NC7SZ08L6X
UCC27611DRV
MP2357DJ-LF
TLV3201AIDBVR
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Demonstration System EPC9114
Table 4: Bill of Materials - Source Coil
Item
Qty
Reference
Part Description
Manufacturer
Part #
1
2
3
4
5
6
1
1
1
1
1
1
Ctrombone
C1
C2
C3
PCB1
J1
470 pF, 300 V
3.3 pF, 1500 V
3.3 pF, 1500 V
390 pF, 630 V
Class 2 Coil Former
SMA PCB Edge
Vishay
Vishay
Vishay
Vishay
NuCurrent
Linx
VJ1111D471KXLAT
VJ1111D3R3CXRAJ
VJ1111D3R3CXRAJ
VJ1111D391KXLAT
R42DMTxD1
CONREVSMA003.031
Table 5: Bill of Materials - Device Board
Item
Qty
Reference
Part Description
Manufacturer
Part #
1
2
3
4
5
1
1
1
2
4
C84
C85
PCB1
CM1, CM11
CM2, CM12, CMP1, CMP2
100 nF, 50 V
10 µF, 50 V
Cat3PRU
470 pF
DNP
Murata
Murata
Coastal Circuits
Vishay
GRM188R71H104KA93D
GRM32DF51H106ZA01L
Cat3DeviceBoard
VJ1111D471KXLAT
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
4
1
1
4
1
1
1
1
2
2
1
1
1
4
1
CM5, CM7, CMP3, CMP4
CM6
CM8
D80, D81, D82, D83
D84
D85
D86
D87
J81, J82
LM1, LM11
R80
R81
R82
TP1, TP2, TP3, TP4
JPR1
DNP
56 pF
68 pF
40 V, 1 A
LED 0603 Green
2.7 V 250 mW
LED 0603 Red
33 V, 250 mW
.1" Male Vert.
82 nH
300 mΩ, 1 W
4.7k Ω
422 Ω
SMD Probe Loop
Wire Jumper at CM11
Vishay
Vishay
Diodes Inc.
Lite-On
NXP
Lite-On
NXP
Würth
Würth
Stackpole
Stackpole
Yageo
Keystone
VJ0505D560JXPAJ
VJ0505D680JXPAJ
PD3S140-7
LTST-C193KGKT-5A
BZX84-C2V7,215
LTST-C193KRKT-5A
BZX84-C33,215
61300211121
744912182
CSRN2512FKR300
RMCF1206FT4K70
RMCF0603FT422R
5015
–
–
–
–
–
–
EPC would like to acknowledge Würth Electronics (www.we-online.com/web/en/wuerth_elektronik/start.php), Coilcraft (www.coilcraft.com), and KDS Daishinku America (www.kdsamerica.com) for their support of this project.
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2016 |
| 11
5V
1
2
1
2
1
2
3
OSC
FB
GND
CNTL
Reg
DRV
Oscillator Disable
R73
10k
C73
22 pF, 50 V
EMPTY
Oscillator
3
5V
C70
100 nF, 16 V
IntOsc
U70
DSO221SHF 6.780
VCC
OE
OUT
GND
5V
OSC
C91
1µF, 25 V
L90
47µH 250 mA
C95
22 nF, 25 V
BAT54KFILM
D95
C90
1 µF, 25 V
5V
Figure 11: EPC9510-ZVS class-D schematic
1
R70
47k
5V
OSC
6
1
VIN
D90
40 V 1 A
PD3S140-7
IN
5
Logic Supply Regulator
0.81V
EN
.1" Male Vert.
1
2
JP70
R92
9.53k 1%
R91
49.9k 1%
4
U90
MP2357DJ-LF
2
1
2
C92
1µF, 25 V
C72
100 nF, 16 V
B
A
C71
100 nF, 16 V
IntOsc
U71
NC7S Z00L6X
U72
NC7S Z08L6X
Y
5V
OSC
Jumper100
JP71
JP72
.1" Male Vert.
5V
5V
B
A
FD2
2
D71
40 V 30 mA
SDM03U40
TBD
1
FD3
2
L_S ig1
H_Sig1
External Oscillator
.1" Male Vert.
1
2
J70
D72
40 V 30 mA
SDM03U40
TBD
R72
1k
P72
Deadtime Fall
1
R71
1k
P71
L_S ig1
H_Sig1
VOUT
VIN
Pre-Regulator
PreRegulator
EPC9510PR_R1_0.SchDoc
GND
Icoil
5V
VOUT
VIN
VAMP
OUT
SMD probe loop
1
TP2
SMD probe loop
1
TP1
LIN
HIN
OutA
a
EPC9510_SE_ZVSclassD_Rev1_0.S chDoc
VAMP
VAMP
5V
5V
Icoil
5V
VIN
Main Supply
19 V 1 Amax
1
2
J1
.156" Male Vert.
10k
R20
JP10
VAMP
Czvs1
1 µF 50 V
ZVS Tank Circuit
Lzvs1
TBD
Coil Current Sense
C20
10 nF, 50 V
D20
SDM03U40
40 V 30 mA
Pre-Regulator Disconnect
VOUT
JP1
.1" Male Vert.
Jumper100
1
2
Deadtime Rise
OSC
Local Fiducials
FD1
Internal / External Oscillator
OSC
OSC
5V
1
2
R90
100k 1%
4
1
2
1
R21
100k
2
Lsns
110 nH
P25
10k
Current Adjust
C22
10 nF, 50 V
J2
SMA Board Edge
Tsns
10µH 1:1 96.9%
C21
680 pF, 50 V
D21
SDM03U40
40 V 30 mA
4
1
VIN
1
2
GND
3
2
1
1 2
2
12 |
2
R26
TBD
Icoil
R25
TBD
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Demonstration System EPC9114
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EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2016 |
LIN
C7
22 pF, 50 V
LIN
HIN
C3
22 nF, 25 V
D3
SDM03U40
EMPTY
R2
20 Ω
GND
Gate Driver
U1
LM5113 TM
Figure 12: EPC9510- Gate driver and power devices schematic
C6
22 pF, 50 V
HIN
C5
100 nF, 16 V
EMPTY
4.7 V
C2
100 nF, 16 V
5V
1
2
5V
1
2
R4
4.7 Ω
GL
2
C4
100 nF, 16 V
OUT
GL
GL
Out
GU
GU
5 VHS
4.7 V
C1
1µF, 10 V
D1
BAT54KFILM
.1" Male Vert.
Ground Post
1
GP1
5V
VAMP
D4
CD0603-Z5 V1
5 VHS
Synchronous Bootstrap Power Supply
1
D2
SDM03U40
R3
27k
Gbtst
Q1B
EPC2107
Probe Hole
GL
1
PH1
GU
GND
C15
2.2µF, 100 V
Out
VAMP
OUT
100 V, 220 mΩ with BS
Q1A
EPC2107
C12
10 nF, 100 V
C11
10 nF, 100 V
VAMP
VAMP
VAMP
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Demonstration System EPC9114
| 13
2
Icoil
D41
SDM03U40
R4 1 40 V, 30 mA
6.04k
D40
C43
10nF, 50 V
SDM03U40
40 V, 30 mA
R4 3
10.5k
SDM03U40
40 V, 30 mA R4 4
100k 1%
D42
Output Current Limit
24.9k
2
Output Power Limit
2
Vom
1
2
Pmon 1 R4 2
R4 5
C45
1.5k
10 nF, 100 V
EMPTY
EMPTY
1
1 R4 0
261k
2
VOUT
1
Output Voltage Limit
1
R5 3
1.00k
2
Pre-Regulator Disable
1
2
1
2
1
Vfdbk
C44
22 pF, 50 V
VOUT
C51
100 nF, 16 V
1
C52
100 pF
R3 2
8.2k 1%
2
Isens
FB
Vsepic
Osc
1 R30
2
100 Ω
C30
100 nF, 100 V
C32
47nF, 25 V
Pcmp
V+
2
UVLO
VIN
8
9
Vsepic
DR
VCC
6
1
Lo
Latch Hi
UVLC
1.24V
R6 1
PreDR
2
C50
100 nF, 100 V
GND
Q
I-
R130
261k
VOUT
R131
6.04k
VOUT
1
2
CMPOUT
CMPOUT
4
R132
18k 1%
C131
1nF, 50 V
2
VDD
D35
4
3
5V
1
C133
1nF, 50 V
EMPTY
1 R134
470k
2
U130
TLV3201AIDBVR
5V
C130
100 nF, 16 V
5V
D36
Current Mode
2
D37
VSS
VREF
GLPH
GLPL
5 VGD
GLPH 1
1 R3 6
2 5V
634 Ω
EP Isns
5
4
6
C81
100 nF, 16 V
Isns
5 VGD
Voltage Mode
Gate Driver
U80
UCC27611DRV
LDO
1 R35
2
634 Ω
R33
75k
Power Mode
R1 33
6.8k 1%
5V
Iled
Pled
1
5 VGD
C80
1µF, 10 V
Isns
C65
2.2µF, 100V
VOUT
C82
22 pF, 50 V
Isns
3
2
Isns
PW M
1
5 VGD
L80
10 µH, 150 mA
Pmon
Imon
5V
1 R8 2
20 Ω
Imon 5
Pmon
VOUT
DC Power Monitor
CLR LE
D
I+
300 mΩ, 0.125 W
U30
LT2940 IMS #PBF
CMP+
V-
7
3
V+
8
Pgnd
Cnt
U50
LM3478 MAX/NOPB
1 R5 0
10 Ω
Agnd
VIN
1.26 V
Comp
FA/SD
C53
10 nF, 50 V
1
3
2
Comp
Vfdbk
7
FA/SD
C31
22 pF, 50 V
R52
0Ω
R52
71.5k 1%
R3 1
71k5 1%
Isns
2
Figure 13: Pre-regulator schematic
2
4
1
1
2
1
5
12
R51
124k 1%
10
JP50
.1" Male Vert.
6
2
11
R8 0
2.2 Ω
R38
49.9k 1%
Pcmp
R37
150k 1%
Isns
R6 0
80 mΩ, 0.4 W
GLPL
Q60
EPC2036
100 V, 65 mΩ
ProbeHole
1
PH60
C62
4.7µF, 50 V
VIN
GND
Ground Post
1
GP60
.1" Male Vert.
Q61
EP C2007C
100 V, 6 A, 30 mΩ
D60
MBRS110 0T3G
100 V, 1A
C63
10µF, 35 V
SW
C61
4.7µF, 50 V
VIN
L60
100 µH, 2.2 A
2 GLPL
VIN
VIN
4
3
5V
1
2
1
2
1
2
1
5
2
1
2
1
2
2
1
2
1
14 |
2
C64
2.2µF, 100 V
Vsepic
QUICK START GUIDE
Demonstration System EPC9114
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Demonstration System EPC9114
Ctrombone
470 pF 1111
Adjust on trombone
J1
SMA PCB
Edge
Coil Matching
C3
390 pF 1111
Amplifier
Connection
Cl1
Cls2PTU
C2
3.3 pF 1111
C1
3.3 pF 1111
Figure 14: Class 2 Source Board Schematic
1
TP3
SMD probe loop
1
Kelvin Output Current
TP4
SMD probe loop
J81
.1" Male Vert.
2
1
Shunt Bypass
VRECT
1
2
R80
300 mΩ,1W
RX Coil
DNP
56 pF
Output
1
SMD probe loop
TP2
LM 1
Kelvin Output Voltage
1
82 nH
SMD probe loop
VRECT
CM P4
DNP pF
CMP2
DNP
CM 11 CM 7
470 pF DNP
C84
100 nF, 50V
Matching
LM 11
CM 8
68 pF
VOUT
C85
10 µF, 50 V
D81
40 V, 1 A
VOUT
R81
4.7k
D84
LED 0603
Green
82 nH
CM 12
DNP
VRECT
1
CM 6
.1" Male Vert.
TP1
R82
422 Ω
2
CMP3
DNP
CM 2
D82
40 V, 1A
2
Cl1
Cat3PRU
CMP1
DNP
D80
40 V, 1 A
CM1
470 pF
2
1
1
CM 5
DNP
J82
VOUT
D86
LED 0603 Red
D83
40 V, 1 A
D85
2.7 V, 250 mW
D87
33 V, 250 mW
Receive Indicator Over-Voltage Indicator
V OUT > 4 V
V OUT > 36 V
Figure 15: Category 3 device board schematic
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2016 |
| 15
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Demonstration Board Notification
The EPC9114 board is intended for product evaluation purposes only and is not intended for commercial use. Replace components on the Evaluation Board only with those parts shown on
the parts list (or Bill of Materials) in the Quick Start Guide. Contact an authorized EPC representative with any questions.
This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk.
As an evaluation tool, this board is not designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As board
builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not RoHS compliant. Efficient Power Conversion
Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant.
The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this Quick Start Guide constitute a sales contract or create any kind of warranty, whether express
or implied, as to the applications or products involved.
Disclaimer: EPC reserves the right at any time, without notice, to make changes to any products described herein to improve reliability, function, or design. EPC does not assume any liability
arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, or other intellectual property whatsoever, nor the
rights of others.
