EPC EPC9113 User manual

Demonstration
System EPC9113
Quick Start Guide
6.78 MHz, ZVS Class-D Wireless Power System
using EPC2108 / EPC2036

QUICK START GUIDE
2 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Demonstration System EPC9113
DESCRIPTION
The EPC9113 wireless power demonstration system is a high eciency,
A4WP compatible, Zero Voltage Switching (ZVS), Voltage Mode class-D
wireless power transfer demonstration kit capable of delivering up to
16 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.
The EPC9113 wireless power system comprises the three boards (shown
in Figure 1) namely:
1) A Source Board (Transmitter or Power Amplier) EPC9509
2) A Class 3 A4WP compliant Source Coil (Transmit Coil)
3) A Category 3 A4WP compliant Device Coil with rectier and DC
smoothing capacitor.
The amplier board features the enhancement-mode, half-bridge eld
eect transistor (FET), the 60 V rated EPC2108 eGaN FET with integrated
synchronous bootstrap FET. The amplier can be set to operate in either
dierential mode or single-ended mode 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 3 standard over a load
range as high as ±50j Ω. The pre-regulator features the 100 V rated 65 mΩ
EPC2036 as the main switching device for a SEPIC converter.
The EPC9509 can operate in either Single ended or Dierential mode by
changing a jumper setting. This allows for high eciency operation with
load impedance ranges that allow for single ended operation.
The timing, the timing adjust circuits for the ZVS class-D ampliers have
been separated to further ensure highest possible eciency setting and
includes separate ZVS tank circuits.
The amplier is equipped with a pre-regulator controller that adjusts the
voltage supplied to the ZVS Class-D amplier 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 amplier 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
amplier voltage requirements. Under any conditions, the controller will
ensure the correct operating conditions for the ZVS class-D amplier
based on the A4WP standard. 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 simplied diagram of the
amplier board is given in Figure 2.
The Source and Device Coils are Alliance forWireless Power (A4WP) compliant
and have been pre-tuned to operate at 6.78 MHz with the EPC9509 am plier.
The source coil is class 3 and the device coil is category 3 compliant.
The device board includes a high frequency schottky diode based full
bridge rectier and output lter to deliver a ltered 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 EPC2108 or EPC2036 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.
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.
Figure 1: EPC9113 demonstration system

QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 3
Demonstration System EPC9113
MECHANICAL ASSEMBLY
The assembly of the EPC9113 Wireless Demonstration kit is simple and
shown in Figure 1. The source coil and amplier have been equipped
with SMA connectors. The source coil is simply connected to the
amplier.
The device board does not need to be mechanically attached to the
source coil.
The coil sets of the EPC9111 and EPC9112 (both the source and
device coils) are not compatible with the EPC9113/4 kit. To prevent
inadvertent connection of either, the connectors of the amplier and
coils have been changed from reverse polarity to standard polarity.
Please contact EPC for modications to the original coil set to ensure
compatibility with the EPC9509 amplier.
DETAILED DESCRIPTION
The Amplier Board (EPC9509)
Figure 2 shows the system block diagram of the EPC9509 ZVS class-D
amplier with pre-regulator and Figure 3 shows the details of the
ZVS class-D amplier section. The pre-regulator is used to control
the ZVS class-D wireless power amplier based on three feedback
parameters 1) the magnitude of the coil current indicated by the
green LED, 2) the DC power drawn by the amplier indicated by
the yellow LED and 3) a maximum supply voltage to the amplier
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 amplier followed by the power delivered
to the amplier and lastly the magnitude of the coil current. The
maximum amplier supply voltage is pre-set to 52 V and the maximum
power drawn by the amplier is pre-set to 16 W. The coil current
magnitude is pre-set to 800 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 by connecting the positive supply
directly to the ZVS class-D amplier 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 amplier. 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 amplier supply, an accurate measurement of the
power drawn by the amplier can be made.
The EPC9509 is also provided with a miniature high eciency switch-
mode 5 V supply to power the logic circuits on board such as the gate
drivers and oscillator.
The amplier 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.
The pre-regulator can also be disabled in a similar manner as the oscillator
using JP50. However, note that this connection is oating with respect to
the ground so removing the jumper for external connection requires a
oating switch to correctly control this function. Refer to the datasheet of
the controller IC and the schematic in this QSG for specic details.
The ZVS timing adjust circuits for the ZVS class D ampliers are each
independently settable to ensure highest possible eciency setting
and includes separate ZVS tank circuits. This allows OOK modulation
capability for the amplier.
The EPC9509 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 amplier 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 amplier
supply voltage across TP1 and TP2 will show that it has nearly reach the
maximum value limit.
Table 2: Performance Summary (TA= 25 °C) Category 3 Device Board
Symbol Parameter Conditions Min Max Units
VOUT Output Voltage Range 0 38 V
IOUT Output Current Range 0 1.5# A
# Actual maximum current subject to operating temperature limits
Table 1: Performance Summary (TA= 25°C) EPC9509
Symbol Parameter Conditions Min Max Units
VIN
Bus Input Voltage Range – Pre-
Regulator Mode
Also used in
bypass mode
for logic supply
17 24 V
VIN
Amp Input Voltage Range –
Bypass Mode 0 52 V
VOUT Switch-Node Output Voltage 52 V
IOUT
Switch-Node Output
Current (each) 1* 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
VsgnDi
Dierential or Single-Select
Voltage
Open Drain/
Collector -0.3 5.5 V
IsgnDi
Dierential or Single-Select
Current
Open Drain/
Collector -1 1 mA
* Maximum current depends on die temperature – actual maximum current will be subject to switching
frequency, bus voltage and thermals.

QUICK START GUIDE
4 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Demonstration System EPC9113
Single ended or Dierential Mode operation
TheEPC9509ampliercanbeoperatedinoneoftwomodes;single-ended
or dierential mode. Single ended operation oers higher amplier
eciency but reduced imaginary impedance drive capability. If the
reected impedance of the tuned coil load exceeds the capability of
the amplier to deliver the desired power, then the amplier can be
switched over to dierential mode. In dierential mode, the amplier is
capable of driving an impedance range of 1 Ω through 56 Ω and ±50j Ω
and maintains either the 800 mARMS coil current or deliver up to 16 W
of power. The EPC9509 is set by default to dierential mode and can be
switched to single ended mode by inserting a jumper into J75. When
inserted the amplier operates in the single-ended mode. Using an
external pull down with oating collector/ drain connection will have
the same eect. The external transistor must be capable of sinking 25
mA and withstand at least 6 V.”
For dierential mode only operation, the two ZVS inductors LZVS1 and LZVS2
can be replaced by a single inductor LZVS12 and by removing CZVS1 and CZVS2.
ZVS Timing Adjustment
Setting the correct time to establish ZVS transitions is critical to
achieving high eciency with the EPC9509 amplier. This can be
done by selecting the values for R71, R72, R77, and R78 or P71, P72,
P77, and P78 respectively. This procedure is best performed using a
potentiometer installed at the appropriate locations that is used to
determine the xed resistor values. The procedure is the same for both
single-ended and dierential mode of operation. The timing MUST
initially be set WITHOUT the source coil connected to the amplier.
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 o, remove the jumper in JP1 and install it into JP50 to
place the EPC9509 amplier 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 o, 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.
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
exceedthe absolute maximum voltage of 52 V).
6. While observing the oscilloscope adjust the applicable potentiometers
to so achieve the green waveform of Figure 10.
7. Repeat for the other half-bridge.
8. Replace the potentiometers with xed value resistors if required
Remove the jumper from JP50 and install it back into JP1 to revert the
EPC9509 back to pre-regulator mode.
LZVS = ∆tvt
8 ∙ fsw∙ COSSQ + Cwell
COSSQ =
VAMP
∙
∫
0
VAMP
COSS (v) ∙ dv
1
Determining component values for LZVS
TheZVStankcircuitisnotoperatedatresonance,andonlyprovidesthe
necessary negative device current for self-commutation of the output
voltage at turn o. The capacitors CZVS1 and CZVS2 are chosen to have
a very small ripple voltage component and are typically around 1 µF.
The amplier supply voltage, switch-node transition time will determine
the value of inductance for LZVSx which needs to be sucient 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:
(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. that the amplier supply voltageVAMP is absent from the equation as
it is accounted for by the voltage transition time.The COSS of the EPC2108
eGaN FETs is very low and lower than the gate driver well capacitance
Cwell which as a result must now be included in the ZVS timing calculation.
The charge equivalent capacitance can be determined using
the following equation:
(2)
To add additional immunity margin for shifts in coil impedance, the value
of LZVS can be decreased to increase the current at turn o of the devices
(which will increase device losses). Typical voltage transition times range
from 2 ns through 12 ns. For the dierential case the voltage and charge
(COSSQ) are doubled when calculating the ZVS inductance.
The Source Coil
Figure 4 shows the schematic for the source coil which is Class 3
A4WP compliant. The matching network includes both series and
shunt tuning. The matching network series tuning is dierential to
allow balanced connection and voltage reduction for the capacitors.
The Device Board
Figure5showsthebasicschematicforthedevicecoilwhichisCategory3
A4WP compliant. The matching network includes both series and
shunt tuning. The matching network series tuning is dierential 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).

QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 5
Demonstration System EPC9113
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 4).
2. To maintain control stability, the red LED for voltage mode indicator on the EPC9509
version 1.0 has been disabled. This will be corrected in subsequent revisions of the
board. For questions regarding this LED function, please contact EPC.
3. 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 amplier or the protection circuitry of the system.
4. 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 EPC9113 system to
oscillate at a low frequency and may lead to failure. It is recommended to use a xed low
inductance resistor as an initial load. Once a design matures, a post regulator, such as a
Buck converter, can be used.
THERMAL CONSIDERATIONS
The EPC9113 demonstration system showcases the EPC2108 and
EPC2036 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 EPC9113 demonstration system has limited current and thermal protection
only when operating o the Pre-Regulator. When bypassing the pre-regulator there is no
current or thermal 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.
Pre-Cautions
The EPC9113 demonstration system has no enhanced protection
systems and therefore should be operated with caution. Some specic
precautions are:
1. Never operate the EPC9113 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 the failure of the device board. Please 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 suite
specic conditions so that it can be correctly adjusted for use with the
ZVS class-D amplier.
2. There is no heat-sink on the devices and during experimental
evaluation it is possible present conditions to the amplier 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 EPC9509 amplier board into your VNA in an
attempt to measure the output impedance of the amplier. Doing so
will severely damage the VNA
QUICK START PROCEDURE
The EPC9113 demonstration system is easy to set up and evaluate the
performance of the eGaN FET in a wireless power transfer application. Refer
toFigure1 toassemble thesystem andFigures 6and 8for properconnection
and measurement setup before following the testing procedures.
The EPC9509 can be operated using any one of two alternative methods:
a. Using the pre-regulator
b. Bypassing the pre-regulator
a. Operation using the pre-regulator
The pre-regulator is used to supply power to the amplier in this mode
and will limit the coil current, power delivered or maximum supply volt-
age to the amplier 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 EPC9509 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 o, connect the main input power supply bus to J1 as
shown in Figure 3. 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 conrmed, observe the output voltage
and other parameters on both the amplier 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 amplier. This allows the amplier 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 to place the
EPC9509 amplier in bypass mode. Also make sure the source coil and
device coil with load are connected.
2. With power o, connect the main input power supply bus +VIN to the
bottom pin of JP1 and the ground to the ground connection of J1 as
shown in Figure 3.
3. With power o, 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.
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 52 V).
7. Once operation has been conrmed, adjust the main supply
voltage within the operating range and observe the output voltage,
eciency and other parameters on both the amplier 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.

QUICK START GUIDE
6 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Demonstration System EPC9113
Source Coil
Coil
Connection
Matching
Impedance
Network
Class 3
Coil
Figure 5: Basic schematic of the A4WP Category 3 device board
Figure 3: Diagram of EPC9509 amplier circuitFigure 2: Block diagram of the EPC9509 wireless power amplier
+
V
AMP
Q1_a LZVS12
Q2_a
Q1_b
Q2_b
LZVS2
CZVS2 CZVS1
LZVS1
Coil
Connection
Single
Ended
Operation
Jumper
Pre-
Regulator
Pre-Regulator
Jumper
JP1
J1
VIN
Bypass Mode
Connection
Un-Regulated
DC output
Matching
Impedance
Network
Cat. 3
Coil
Device Board
X
IAMP P
AMP
VAMP
ICOIL
|ICOIL|
19V
SEPIC
Pre-Regulator ZVS Class-D
Amplier
Control Reference Signal
Combiner
DC
C
Coil
S
3V –
DC
52VDC
Figure 4: Basic schematic of the A4WP Class 3 source coil

QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 7
Demonstration System EPC9113
Figure 6: Proper connection and measurement setup for the amplier board
Figure 7: Proper connection for the source coil Figure 8: Proper connection and measurement setup for the device board
Source Board
Connection
Matching with
trombone tuning
Standos for Mechanical
attachment to Source Coil
to these locations (x5)
Device Output
Voltage
(0 V – 38 Vmax)
A
V
mV
External Load
Connection
Matching
Device Output
Current
(300 m Shunt)
Output Voltage
> 5 V LED
Output Voltage
> 37 V LED
Load Current
(See Notes for details)
* ONLY to be used with
Shunt removed
17-24 VDC
VIN Supply
(Note Polarity)
Source Coil
Connection
External
Oscillator
Switch-node Main
Oscilloscope probe
Switch-node Secondary
Oscilloscope probe
Ground Post
Voltage
Source Jumper
Disable Oscillator
Jumper
Disable Pre-Regulator
Jumper
Coil Current Setting
Timing Setting
(Not Installed)
Internal Oscillator
Selection Jumper
+
Pre-Regulator Jumper
Bypass Connection
Single Ended /
Operation Selector
Operating Mode LED
indicators
Ground Post
Ground Post
Supply Voltage
(0 V – 52 Vmax.)
V
Switch-node Pre-
Regulator
Oscilloscope probe

QUICK START GUIDE
8 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Demonstration System EPC9113
Figure 9 : Proper measurement of the switch nodes using the hole and ground post
Figure 10: ZVS timing diagrams
Shoot-
through
Q2 turn-on
Q1 turn-o
VAMP
0
time
ZVS
Partial
ZVS
ZVS + Diode
Conduction
Shoot-
through
Q1 turn-on
Q2 turn-o
VAMP
0
time
ZVS
Partial
ZVS
ZVS + Diode
Conduction
Do not use
probe ground
lead
Ground
probe
against
post
Place probe tip
in large via Minimize
loop

QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 9
Demonstration System EPC9113
Table 3: Bill of Materials - Amplier Board
Item Qty Reference Part Description Manufacturer Part #
1 3 C1_a, C1_b, C80 1 µF, 10 V TDK C1005X7S1A105M050BC
2 12 C2_a, C2_b, C4_a, C4_b, C35, C51,
C70, C71, C72, C77, C78, C81 100 nF, 16 V Würth 885012205037
3 3 C3_a, C3_b, C95 22 nF, 25 V Würth 885012205052
4 2 C5_a, C5_b DNP (100 nF, 16 V) Würth 885012205037
5 1 C20 DNP (1 nF, 50 V) Murata GRM155R71H102KA01D
6 1 C73 DNP (22 pF, 50 V) Würth 885012005057
7 1 R20 DNP (10k) Panasonic ERJ-2GEJ103X
8 8 C6_a, C6_b, C7_a, C7_b, C31, C44,
C75, C82 22 pF, 50 V Würth
885012005057
9 4 C11_a, C11_b, C12_a, C12_b 10 nF, 100 V TDK C1005X7S2A103K050BB
10 4 C15_a, C15_b, C64, C65 2.2 µF, 100 V Taiyo Yuden HMK325B7225KN-T
11 1 C21 680 pF, 50 V Murata GRM155R71H681KA01D
12 1 C22 1 nF, 50 V Murata GRM155R71H102KA01D
13 2 C30, C50 100 nF, 100 V Murata GRM188R72A104KA35D
14 1 C32 1 nF, 50 V Murata GRM1555C1H102JA01D
15 1 C52 100 pF Murata GRM1555C1H101JA01D
16 2 C53, CR43 (on top of R43) 10 nF, 50 V Murata GRM155R71H103KA88D
17 2 C61, C62 4.7 µF, 50 V Taiyo Yuden UMK325BJ475MM-T
18 1 C63 10 µF, 35 V Taiyo Yuden GMK325BJ106KN-T
19 3 C90, C91, C92 1 µF, 25 V Würth 885012206076
20 2 Czvs1, Czvs2 1 µF, 50 V Würth 885012207103
21 3 D1_a, D1_b, D95 40 V, 300 mA ST BAT54KFILM
22 10 D2_a, D2_b, D21, D40, D41, D42,
D71, D72, D77, D78 40 V, 30 mA
Diodes Inc. SDM03U40
23 3 D3_a, D3_b, D20 40 V, 30 mA Diodes Inc. SDM03U40
24 2 D4_a, D4_b 5V1, 150 mW Bournes CD0603-Z5V1
25 1 D35 LED 0603 Yellow Lite-On LTST-C193KSKT-5A
26 1 D36 LED 0603 Green Lite-On LTST-C193KGKT-5A
27 1 D37 LED 0603 Red Lite-On LTST-C193KRKT-5A
28 1 D60 100 V, 1 A On-Semi MBRS1100T3G
29 1 D90 40 V, 1 A Diodes Inc. PD3S140-7
30 3 GP1_a, GP1_b, GP60 .1" Male Vert. Würth 61300111121
31 1 J1 .156" Male Vert. Würth 645002114822
32 1 J2 SMA Board Edge Linx CONSAM003.062
33 6 J70, J75, JP1, JP50, JP70, JP71 .1" Male Vert. Würth 61300211121
34 1 JMP1 DNP
35 1 L60 33 µH, 2.8 A CoilCraft MSD1278-334
36 1 L80 10 µH,150 mA Taiyo Yuden LBR2012T100K
37 1 L90 47 µH, 250mA Würth 7440329470
38 1 Lsns 110 nH CoilCraft 2222SQ-111JE
39 2 Lzvs1, Lzvs2 see addendum statement 390 nH CoilCraft 2929SQ-391JE
40 1 Lzvs12 DNP CoilCraft TBD
41 5 P25, P71, P72, P77, P78 10k, DNP (1k) Bournes, Murata 3266Y-1-103LF, PV37Y102C01B00
42 2 Q1_a, Q1_b 60 V, 150 mΩ with SB EPC EPC2108
43 1 Q60 100 V, 65 mΩ EPC EPC2036
44 1 Q61 DNP (100 V, 6 A, 30 mΩ) EPC EPC2007C
45 3 R2_a, R2_b, R82 20 Ω Stackpole RMCF0402JT20R0
46 2 R3_a, R3_b 27k Panasonic ERJ-2GEJ273X
47 2 R4_a, R4_b 4.7 Ω Panasonic ERJ-2GEJ4R7X
(continued on next page)

QUICK START GUIDE
10 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Demonstration System EPC9113
Table 3: Bill of Materials - Amplier Board (continued)
Item Qty Reference Part Description Manufacturer Part #
48 1 R20 DNP (10k) Panasonic ERJ-2GEJ103X
49 1 R21 100k Panasonic ERJ-2GEJ104X
50 1 R25 7.5k Panasonic ERJ-2RKF7501X
51 1 R26 2k Panasonic ERJ-2RKF2001X
52 1 R30 100 Ω Panasonic ERJ-3EKF1000V
53 1 R31 51.0k 1% Panasonic ERJ-3EKF5102V
54 1 R32 8.2k 1% Panasonic ERJ-2RKF8201X
55 2 R33, R70 47k Panasonic ERJ-2RKF4702X
56 2 R35, R36 634 Ω Panasonic ERJ-2RKF6340X
57 1 R37 150k 1% Panasonic ERJ-2RKF1503X
58 2 R38, R91 49.9k 1% Panasonic ERJ-2RKF4992X
59 1 R40 196k Panasonic ERJ-3EKF1963V
60 1 R41 6.04k Panasonic ERJ-2RKF6041X
61 1 R42 24.9k Panasonic ERJ-2RKF2492X
62 1 R43 10.5k Panasonic ERJ-2RKF1052X
63 2 R44, R90 100k 1% Panasonic ERJ-2RKF1003X
64 1 R50 10 Ω Panasonic ERJ-3EKF10R0V
65 1 R51 124k 1% Panasonic ERJ-2RKF1243X
66 1 R52 71.5k 1% Panasonic ERJ-2RKF7152X
67 1 R53 1.00k Panasonic ERJ-2RKF1001X
68 1 R54 0 Ω Yageo RC0402JR-070RL
69 1 R60 40 mΩ, 0.4 W Vishay Dale WSLP0603R0400FEB
70 1 R61 150 mΩ, 0.25 W Vishay Dale WSL0805R1500FEA18
71 2 R71, R78 124 Ω Panasonic ERJ-2RKF1240X
72 2 R72, R77 22 Ω Panasonic ERJ-2RKF22R0X
73 2 R73, R75 10k Panasonic ERJ-2GEJ103X
74 1 R80 2.2 Ω Yageo RC0402JR-072R2L
75 1 R92 9.53k 1% Panasonic ERJ-2RKF9531X
76 2 TP1, TP2 SMD Probe Loop Keystone 5015
77 1 Tsns 10 µH, 1:1, 96.9% CoilCraft PFD3215-103ME
78 2 U1_a, U1_b 100 V eGaN Driver Texas Instruments LM5113TM
79 1 U30 Power & Current Monitor Linear LT2940IMS#PBF
80 1 U35 DNP (Comparator) Texas Instruments TLV3201AIDBVR
81 1 U50 Boost Controller Texas Instruments LM3478MAX/NOPB
82 1 U70 Programmable Oscillator KDS Daishinku America DSO221SHF 6.780
83 2 U71, U77 2 In NAND Fairchild NC7SZ00L6X
84 2 U72, U78 2 In AND Fairchild NC7SZ08L6X
85 1 U80 Gate Driver with LDO Texas Instruments UCC27611DRV
86 1 U90 1.4 MHz, 24 V, 0.5A Buck MPS MP2357DJ-LF
Addendum Statement; Ongoing testing of the EPC9509 revealed that the improvement in performance of the EPC2108 based design exceeded that of earlier design criteria and as such the design could further be improved to
increase eciency by changing Lzvs1 and Lzvs2 from 390nH (Coilcraft 2929SQ-391JEB) to 500nH (Coilcraft 2929SQ-501JEB).

QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 11
Demonstration System EPC9113
Table 4: Bill of Materials - Source Coil
Item Qty Reference Part Description Manufacturer Part #
1 1 Ctrombone 120 pF, 1000 V Vishay VJ1111D12KXGAT
2 1 C1 3.3 pF, 1500 V Vishay VJ1111D3R3CXRAJ
3 1 C2 12 pF, 1500 V Vishay VJ1111D1120JXRAJ
4 1 C3 120 pF, 1000 V Vishay VJ1111D121KXGAT
5 1 PCB1 Class 3 Coil Former NuCurrent R26_RZTX_D1
6 2 C4, C6 DNP — —
7 1 C5 0 Ω, 0612 Vishay RCL06120000Z0EA
8 1 J1 SMA PCB Edge Linx CONSMA013.031
Table 5: Bill of Materials - Device Board
Item Qty Reference Part Description Manufacturer Part #
1 1 C84 100 nF, 50 V Murata GRM188R71H104KA93D
2 1 C85 10 µF, 50 V Murata GRM32DF51H106ZA01L
3 1 PCB1 Cat3PRU Coastal Circuits Cat3DeviceBoard
4 2 CM1, CM11 470 pF Vishay VJ1111D471KXLAT
5 4 CM2, CM12, CMP1, CMP2 DNP
– –
6 3 CM5, CM7, CMP3, CMP4 DNP
– –
7 1 CM6 56 pF Vishay VJ0505D560JXPAJ
8 1 CMP8 68 pF Vishay VJ0505D680JXCAJ
9 4 D80, D81, D82, D83 40 V, 1 A Diodes Inc. PD3S140-7
10 1 D84 LED 0603 Green Lite-On LTST-C193KGKT-5A
11 1 D85 2.7 V 250 mW NXP BZX84-C2V7,215
12 1 D86 LED 0603 Red Lite-On LTST-C193KRKT-5A
13 1 D87 33 V, 250 mW NXP BZX84-C33,215
14 2 J81, J82 .1" Male Vert. Würth 61300211121
15 2 LM1, LM11 82 nH Würth 744912182
16 1 R80 300 mΩ, 1 W Stackpole CSRN2512FKR300
17 1 R81 4.7k Ω Stackpole RMCF1206FT4K70
18 1 R82 422 Ω Yageo RMCF0603FT422R
19 4 TP1, TP2, TP3, TP4 SMD Probe Loop Keystone 5015
20 1 JPR1 Wire Jumper at CM11
– –
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.

QUICK START GUIDE
12 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Demonstration System EPC9113
Figure 11: EPC9509 - ZVS class-D amplier schematic
19 V 1.5 A max
FD1
Local Fiducials
FD2 FD3
VIN
5 V
VOUT
GND Icoil
PreRegulator EP C9509PR_R1_0.SchDoc
VIN
5 V
VOUT
Pre-Regulator
SDM03U40
40V 30mA D71
5 V
5V
5 V
Deadtime A Fall
Deadtime A Rise
DNP (1k)P71
A B
U71 NC7S Z00L6X
A B
Y
U72 NC7S Z08L6X
5 V
DSO221SHF 6.780
42
GND
OUT 3
O Ω
1VCC
U70
5 V
5 V
Oscillator
IntOsc
5 V
5 V
Logic Supply Regulator
VIN
OSC
OSC
OSC
.1" Male Vert.
1 2
JP70
Oscillator Disable
OSCIntOsc
.1" Male Vert.
1 2
J70
External Oscillator
Internal/External Oscillator
5 V
5 V
5 V
Deadtime B Rise Deadtime B Fall
A B
U77 NC7SZ00L6X
A B
Y
U78 NC7SZ08L6X
5 V
OSC OSC
SDM03U40
40 V 30 mA D72
DNP (1k)
P72
22 Ω
1 2
R72
SDM03U40
40 V 30 mA D77
DNP (1k)
P77
SDM03U40
40 V 30 mA D78
DNP (1k)
P78
OSC
H_Sig1 L_S ig1 H_Sig2 L_S ig2
OSC
.1" Male Vert.
1
2
JP71
.1" Male Vert.
1 2
J75
Mode
nSD
nSD nSD
5 V
10k
1
2
R75
OutA
OUT B
ZVS Tank Circuit
1 2
.156" Male Vert.
J1
VIN
Main Supply VAMP
VOUT
SMA Board Edge
J2
DNP JMP 1
Single-EndedOperation Only
Pre-Regulator Disconnect
1
TP 1
SMD probeloop
SMD probeloop
1
TP 2
VAMP
VAMP
5 V
GND
LIN
OUTHIN
a
EP C9509_S E_ZVSclass-D_Rev1_0.SchDoc
390 nH Lzvs1 390 nH Lzvs2
DNP Lzvs12
1µF 50 V
Czvs2
VAMP
VAMP
5 V
GN D
LIN
OUTHIN
b
EPC9509_SE_ZVSclass-D_Rev1_0.SchDoc
VAMP
H_Sig1 L_Sig1 H_Sig2 L_S ig2
5 V 5V
Jumper100
JP10
110 nH Lsns
Coil Current Sense
100k
1 2
R21
680 pF, 50 V
C21
SDM03U40
40 V 30 mA D20
EMPTY
SDM03U40
40 V 30 mA D21
Icoil
Icoil
124 Ω
1 2
R71 124 Ω
1 2
R78
10 nF, 50 V
C20 EMPTY
10 nF, 50 V
C22
10k
12
R73
47k
1
2
R70
10k
1
2
R20
EMPTY
100 nF, 16 V
C77
100 nF, 16 V
C78
100 nF, 16 V
100 nF, 16 V
C72
C71
22 pF, 50 V
C75
22 pF, 50 V
C73
EMPTY
1 µF, 25 V
C90
C92
1 µF 50 V
Czvs1
100 nF, 16 V C70
Jumper100
JP72
.1" Male Vert.
1
2
JP1
4 3
5
2
1 6
OSC
Reg
0.81V
GND
IN
FB
EN
DRV
CNTL
U90
MP2357DJ-LF
9.53k 1 %
1
2
R92 49.9k 1 %
1
2
R91
5 V
22 nF, 25 V C95
47 µH 250 mA
L90
100k 1%
1
2
R90
VIN
D95 BAT54KFILM
PD3S140-7
40 V 1A
D90
1µF, 25 V 1µF, 25 V
C91
2k
1
2
R26
22 Ω
1 2
R77
7.5k
1
2
R25
10k
P25
EMPTY
Current Adjust
1
2
10 µH 1:1 96.9%
3
4
Tsns
see addendum statement
see addendum statement
Addendum Statement; Ongoing testing of the EPC9509 revealed that the improvement in performance of the EPC2108 based design exceeded that of earlier design criteria and as such the design could further be improved to increase eciency by changing Lzvs1 and Lzvs2 from 390nH (Coilcraft 2929SQ-391JEB) to 500nH (Coilcraft 2929SQ-501JEB).

QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 13
Demonstration System EPC9113
Figure 12: EPC9509 - Gate driver and power devices schematic
This schematic is repeated for each single-ended ZVS class D amplier
GU
5 VHS
5VHS
5 V
GL
Gate Driver
U1
LM5113TM
OUT
GU GL
D1
BAT54KFILM
5 V
4.7 V
4.7 V
GL
20 Ω
12
R2
SDM03U40
D3
EMPTY Synchronous Bootstrap Power Supply
1 µF, 10 V
C1
D4 CD0603-Z5V1
Gbtst
27k
1
2
R3
D2 SDM03U40
22 nF, 25 V
C3
GND
5 V
OUT
VAMP
OUT
GU GL
OUT
2.2 µF 100 V C15
10 nF, 100 V 10 nF, 100 V
C11 C12
VAMP
VAMP
VAMP
VAMP
GND
HIN
LIN
HIN LIN
1
ProbeHole PH1
Ground Post
1
.1" Male Vert.
GP1
60 V 150 mΩ with SB
Q1A EP C2108
Q1B
EPC2108
4.7 Ω
1 2
R4
100 nF, 16 V
C2
100 nF, 16 V
C4
100 nF, 16 V
C5
EMPTY
C6
22 pF, 50 V
22 p
F, 50 V
C7

QUICK START GUIDE
14 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Demonstration System EPC9113
100k 1 %
12
R44
VIN
Isns
100 pF
C52
.1" Male Vert.
1 2
JP50
PreRegulator Disable
FA/SD
VOUT
VIN
Vsepic
5 V 5 VGD
5VGD GLPH GLPL
Gate Driver
2.2 Ω
1 2
R80
GLPLGLPH
1 2
40 mΩ 0.4 W R60
SW
V
IN
V
IN
5 V
VOUT GND
PreDR PWM
71.5k 1 %
1
2
R52 124k 1 %
12
R51 5 V
10 nF, 50 V
100 nF, 16 V
C53
Ground Post
4.7 µF 50 V C62
4.7 µF 50 V C61
22 µF 100 V C64
5
4
UVLO
Osc
3
6
PGND
1.26 V
Cnt
FA/SD
FB Comp
8
7
AGND
Isens
VIN
2 1
DR
U50
LM3478 MAX/NOPB
0 Ω
1 2
R54
100 V 1A
D60
MBRS1100T3G
Vfd bk
VIN
Isns
1
6
D
3
2
1.24 V
12
8 7 9
CLR LE
Q
V-
V+
I-
I+
4 5
11
10
VCC
GND
UVLC
Latch Hi
Lo
CMPOUT
CMPOUT
Pmon
Imon
CMP+
U30 LT2940 IMS #PBF
1 2
150 mΩ 0.25 W
R61
6
2 3EP
4 5
LDO VREF
VSS
1VDD
U80
UCC27611DRV
47k
1 2
R33
D36 D35
Current Mode
Power Mode
Pmon Imon
Vsepic VOUT
634 Ω
1 2
R35 5 V
8.2k 1 %
12
R32 51.0k 1 %
1
2
R31
VOUT
V+
Vsepic
Pcmp
DC Power Monitor
Isns
Isns
Isns
Vfd bk
Pmon
Output Voltage Limit
Output Power Limit
Output Current Limit
SDM03U40 40 V 30 mA D40 D41 SDM03U40 40 V 30 mA
24.9k
1 2
R42
Isns
2.2 µF 100 V C65
10 µH 150 mA
L80
Isns
VOUT
Comp
100 Ω
1 2
R30
Icoil
100 nF, 100 V
C50
10E
1 2
R50
1
.1" Male Vert. GP60
1
ProbeHole PH60
20 Ω
1 2
R82
100 nF, 16 V
C81
100 nF, 100 V
C30
22 pF, 50 V
C44
22 pF, 50 V
C82
1 nF, 50 V
C32
22 pF, 50 V
C31
5 VGD
5VGD
1 µF, 10 V
C80
1
3
33 µH 2.8 A
4
2
L60
100 V 65 mΩ
Q60 EPC2036
EPC2007C 100 V 6 A 30 mΩ
Q61
GLPL
Pcmp 49.9k 1 %
1
2
R38
6.04k
12
R41 10.5k
1
2
R43
150k 1 %
12
R37
196k
1 2
R40
SDM03U40 40 V 30 mA
D42
TLV3201AIDBVR
4 3
1
52
U35
EMPTY 100 nF, 16 V
C35
D37
634 Ω
1 2
R36
5V
5 V
Voltage Mode
Vfd bk
Vom
Vom
Pled Iled
10 µF 35 V C63
C51 1.00k
1 2
R53
Connect pin 1 to pin 5 (+5 V)
place a 10 nF across R43
Figure 13: EPC9509 - Pre-regulator schematic

QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 15
Demonstration System EPC9113
Figure 14: Class 3 source board schematic
Figure 15: Category 3 device board schematic
SMA PCB
Edge
J1
Coil Matching
C2
12pF 1111
Ctrombone
Adjust on trombone C6
DNP
C4
DNP
C5
0 Ω 0612
Amplier
Connection
120 pF 1111
120 pF 1111
C3
3.3 pF 1111
C1
Cls3PTU
PCB1
40 V, 1 A
D80
40 V, 1A
D82
40 V, 1 A
D81
40 V, 1 A
D83
10 µF, 50 V
C85
VRECT
100 nF, 50V
C84
VRECT VRECT VOUT
VOUT
1 2
300 mΩ,1W
R80
.1" Male Vert.
1 2
J81
RX Coil
SMD probe loop
1
TP1
SMD probe loop
1
TP2
Kelvin Output Current
SMD probe loop
1
TP3
SMD probe loop
1
TP4
VOUT
.1" Male Vert.
1
2
J82
Output
Cat3PRU
Cl1
DNP
CMP1
CM1
470 pF
470 pF
CM 11
CM 2
DNP
DNP
CM 12
DNP
CMP2
Kelvin Output Voltage
Shunt Bypass
LM 1
LM 11
82 nH
82 nH
Matching
CMP3
DNPCM P4
DNP pF
CM 5
DNP
CM 6
56 pF
CM 7
DNP
CM 8
68 pF
4.7k
12
R81
Receive Indicator Over-Voltage Indicator
422 Ω
12
R82
LED 0603
Green
D84
LED 0603 Red
D86
VOUT > 4 V VOUT > 36 V
2.7 V, 250 mW 250 mW
D85
33 V,
D87

EPC Products are distributed through Digi-Key.
www.digikey.com
For More Information:
Please contact [e-mail]
or your local sales representative
Visit our website:
www.epc-co.com
Sign-up to receive
EPC updates at
bit.ly/EPCupdates
or text“EPC”to 22828
Demonstration Board Warning and Disclaimer
The EPC9113 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 certied 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. Ecient 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 rightat any time, without notice,to makechanges to anyproducts described herein to improve reliability, function, or design. EPCdoes not assume anyliability
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.