Demonstration
System EPC9506
Quick Start Guide
ZVS Class-D Wireless Power Amplifier
Demo Board using EPC2014
QUICK START GUIDE
Demonstration System EPC9506
DESCRIPTION
The EPC9506 is a high efficiency, Zero Voltage Switching (ZVS),
Class-D Wireless Power amplifier demonstration board 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 by including all the critical components on a single
board that can be easily connected into an existing system.
The amplifier board features the EPC2014 (40 V rated - EPC9506)
enhancement mode field effect transistor (FET) in an optional
half-bridge topology (single ended configuration) or default fullbridge topology (differential configuration), and includes the
gate driver/s and oscillator that ensures operation of the system
at 6.78 MHz. The amplifer board can also be operated using an
external oscillator.
The amplifier board is equipped with a pre-regulator that limits the current
of the supply to the amplifier. As the amplifier draws more current, which
can be due to the absence of a device coil, the pre-regulator will reduce
the voltage being supplied to the amplifier that will ensure a safe operating point. The pre-regulator also monitors the temperature of the main
amplifier FETs and will reduce current if the temperature exceeds 85°C.
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 1.
Table 1: Performance Summary (TA = 25 °C) EPC9506
Symbol
Parameter
VDD
Control Supply
Input Range
Bus Input Voltage Range –
Pre-Regulator mode
Bus Input Voltage Range –
Bypass mode
Switch Node
Output Voltage
Switch Node Output Current
(each)
External Oscillator
Input Threshold
Input ‘Low’
Pre-regulator Disable
Voltage Range
Pre-regulator Disable
Current
Oscillator Disable
Voltage Range
Oscillator Disable
Current
VIN
VIN
VOUT
IOUT
Vextosc
VPre_Disable
IPre_Disable
VOsc_Disable
IOsc_Disable
Conditions
Min
Max
Units
7
12
V
8
32
V
0
32
V
VIN
V
10*
A
-0.3
0.8
V
Input ‘High’
2.4
5
V
Open Drain/
Collector
Open Drain/
Collector
Open Drain/
Collector
Open Drain/
Collector
-0.3
5.5
V
-1
1
mA
-0.3
5
V
-25
25
mA
* Assumes inductive load, maximum current depends on die temperature – actual maximum current with be subject to
switching frequency, bus voltage and thermals.
For more information on the EPC2014 eGaN FET please refer to the datasheet available from EPC at www.epc-co.com. The data-sheet should be
read in conjunction with this quick start guide.
EPC9506 Amplifier Board Photo
PAGE 2 |
| EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015
QUICK START GUIDE
DESCRIPTION
The Amplifier Board (EPC9506)
Figure 1 shows a diagram of the EPC9506 ZVS class D amplifier with preregulator. The pre-regulator is set to a specified DC output current limit (up
to 1.5 A) by adjusting P49 and operates from 8 V through 36 V input. The
output voltage of the pre-regulator is limited to approximately 2 V below
the input voltage. The pre-regulator can be bypassed by moving the jumper
(JP60) over from the right 2 pins to the left 2 pins. To measure the current
the amplifier is drawing, an ammeter can be inserted in place of the jumper
(JP60) in the location based on the operating mode (pre-regulator or bypass).
The amplifier comes with its own oscillator that is pre-programmed to
6.78 MHz ± 678 Hz. It can be disabled by placing a jumper into J70 or can
be externally shutdown using an externally controlled open collector / drain
transistor on the terminals of J70 (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 J71 (note which is the ground connection) and the jumper (JP70) is
moved from the right 2 pins to the left 2 pins.
The pre-regulator can also be disabled in the same manner as the oscillator
using J51. The pre-regulator can be bypassed, to increase the operating
voltage (with no current or thermal protection) to the amplifier or to use
an external regulator, by moving the jumper JP60 from the right 2 pins to
the left 2 pins. Jumper JP60 can also be used to connect an ammeter to
measure the current drawn by the amplifier (make sure the ammeter
connects to the pins that correspond to the mode of operation either
bypass or pre-regulator).
Single Ended Operation
The amplifier can be configured for single ended operation where only
devices Q1 and Q2 are used. In this mode only LZVS1 and CZVS are used to
establish ZVS operation. If Q11 and Q12 are populated, then the following
changes need to be made to the board:
1) Remove R76 and R77
2) Short out C46 and C47
3) Short the connection of JMP1 (back side of the board)
Demonstration System EPC9506
1. Remove the jumper in JP60 and insert it into J51 to place the EPC9506
amplifier in bypass mode. With power off connect the main input
power supply (+) bus to the center pin of JP60 (pin 2) and the ground
of the main power to the ground (-) connection of J50 -VIN.
2. With power off, connect the control input power supply bus to +VDD
(J90). Note the polarity of the supply connector.
3. Connect a LOW capacitance oscilloscope probe to the probe-hole J2
and lean against the ground post as shown in Figure 2.
4. Turn on the control supply – make sure the supply is between 7 V and
12 V range (7.5 V is recommended).
5. Turn on the main supply voltage to the required predominant
operating value (such as 24 V but NEVER exceed the absolute
maximum voltage of 32 V).
6. While observing the oscilloscope adjust P74 for the rising edge
of the waveform so achieve the green waveform of figure 4.
Repeat for the falling edge of the waveform by adjusting P75.
7. Check that the setting remains optimal with a source coil attached.
In this case it is important that the source coil is TUNED to resonance
WITH an applicable load. Theoretically the settings should remain
unchanged. Adjust if necessary.
8. Replace the potentiometers with fixed value resistors. Configure
the EPC9506 amplifier back to normal operation by removing the
power connections to J50 and JP60, removing the jumper in J51 and
inserting it back into JP60 (right 2 pins 2 & 3).
Differential Operation
The amplifier can be configured for differential operation where all the
devices are used; Q1, Q2, Q11 and Q12. In this mode either LZVS1, LZVS11 and
CZVS or LZVS12 only is used to establish ZVS operation.
Determining Component Values for LZVS
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 capacitance CZVS 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 inductance
for LZVSx 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:
LZVS =
4) Remove LZVS12 (if populated)
8 ∙ fsw∙ COSSQ
5) Add LZVS1 (270 nH)
6) Check that CZVS1 is populated, if not then install.
7) R74 and R75 may need to be adjusted for the new operating
condition to achieve maximum efficiency (see section on ZVS timing
adjustment).
ZVS Timing Adjustment
Setting the correct time to establish ZVS transitions is critical to
achieving high efficiency with the EPC9506 amplifier. This can be done
by selecting the values for R74 and R75 respectively. This procedure is
best performed using potentiometer P74 and P75 installed that is used to
determine the fixed resistor values. The procedure is the same for both
single ended and differential mode of operation. The timing MUST initially
be set WITHOUT the source coil connected to the amplifier. The timing
diagrams are given in Figure 4 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:
∆tvt
(1)
Where: Δtvt = Voltage transition time [s]
fsw = Operating frequency [Hz]
COSSQ = Charge equivalent device output capacitance [F].
Note that the amplifier supply voltage VAMP is absent from the equation as
it is accounted for by the voltage transition time. The charge equivalent
capacitance can be determined using the following equation:
COSSQ =
1
VAMP
∙
∫
VAMP
COSS (v) ∙ dv
(2)
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. For the differential case
the voltage and charge (COSSQ) are doubled.
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 |
| PAGE 3
QUICK START GUIDE
Demonstration System EPC9506
QUICK START PROCEDURE
The EPC9506 amplifier board is easy to set up and evaluate the
performance of the eGaN FET in a wireless power transfer application.
3. With power off, connect the control input power supply bus to +VDD
(J90). Note the polarity of the supply connector.
The EPC9506 can be operated using any one of two alternative methods:
4. Select and connect an applicable load resistance to the device board.
a. Using the pre-regulator
5. Make sure all instrumentation is connected to the system.
b. Bypassing the pre-regulator
6. Turn on the control supply – make sure the supply is between 7 V and
12 V range (7.5 V is recommended).
a. Operation using the pre-regulator
The pre-regulator is used to supply power to the amplifier in this mode
and will limit the DC current to the amplifier based on the setting. The
pre-regulator also monitors the temperature of the amplifier and will limit
the current in the event the temperature exceeds 85°C.
7. Turn on the main supply voltage to the required value (it is
recommended to start at 2 V and do not exceed the absolute maximum
voltage of 32 V).
1. Make sure the entire system is fully assembled prior to making electrical
connections and make sure jumper (JP60 is set to pre-regulator
– right 2 pins).
8. 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. See Pre-Cautions when operating in the bypass mode
2. With power off, connect the main input power supply bus to +VIN
(J50). Note the polarity of the supply connector.
9. 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.
3. With power off, connect the control input power supply bus to +VDD
(J90). Note the polarity of the supply connector.
NOTE. 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 (J2 and J3 as shown in Figure 3).
4. Select and connect an applicable load resistance to the device board.
5. Make sure all instrumentation is connected to the system.
THERMAL CONSIDERATIONS
6. Turn on the control supply – make sure the supply is between 7 V and
12 V (7.5 V is recommended).
The EPC9506 demonstration system showcases the EPC2014
eGaN FET 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.
7. Turn on the main supply voltage to the required value (it is
recommended to start at 8 V and do not exceed the absolute maximum
voltage of 32 V ).
8. 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.
9. 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. The EPC9506 demonstration system has limited current and thermal protection only
when operating off 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 overtemperature the devices. Wide coil coupling and load range variations can lead to increased
losses in the devices.
b. Operation bypassing the pre-regulator
Pre-Cautions
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.
The EPC9506 demonstration system has no controller or enhanced
In this mode there is no current or thermal protection for the eGaN FETs.
1. 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.
1. Make sure the entire system is fully assembled prior to making electrical
connections and remove the jumper JP60. Never connect the main
power positive (+) to J50 when operating in bypass mode.
2. With power off, connect the main input power supply ground to the
ground terminal of J50 (-) and the positive (+) to the center pin of JP60.
PAGE 4 |
protections systems and therefore should be operated with caution.
Some specific precautions are:
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.
| EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015
QUICK START GUIDE
Demonstration System EPC9506
Bypass Mode
Connection
Pre-Regulator
Jumper
VAMP
JP60
PreRegulator
Coil
Connection
L ZVS12
Q1
VIN
+
Q 11
L ZVS11
L ZVS1
Single
Ended
Operation
Jumper
Q2
J50
C ZVS
PreRegulation
Connection
Q 12
7-12 VDC
Gate Drive and
Control Supply
(Note Polarity)
6-32 VDC
VIN Supply
(Note Polarity)
+
+
Figure 1: Diagram of EPC9506 Amplifier Board
Stand-off Mounting
Holes (x4)
Amplifier Voltage
Source Jumper
Bypass Connection
Pre-Regulator Jumper
Switch-node Main
Oscilloscope probe
Pre-Regulator
Timing Setting
(Not Installed)
Source Coil
Connection
Amplifier
Timing Setting
(Not Installed)
Ground Post
Pre-Regulator
Current Setting
Switch-node
Secondary
Oscilloscope probe
Disable Pre-Regulator
Jumper
Oscillator Selection
Jumper
External / Internal
Disable Oscillator
Jumper
External
Oscillator
Amplifier Board – Front-side
Figure 2: Proper Connection and Measurement Setup for the Amplifier Board
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 |
| PAGE 5
QUICK START GUIDE
Demonstration System EPC9506
Do not use
probe ground lead
Ground
probe
against
post
Place probe tip
in large via
Minimize
loop
Figure 3: Proper Measurement of the Switch Nodes Using the Hole and Ground Post
Q1 turn-off
Q2 turn-off
VAMP
VAMP
Q2 turn-on
Q1 turn-on
0
Partial
Shoot- ZVS
through
time
ZVS
0
Partial
Shoot- ZVS
through
ZVS + Diode
Conduction
time
ZVS
ZVS + Diode
Conduction
Figure 4: ZVS Timing Diagrams
PAGE 6 |
| EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015
QUICK START GUIDE
Demonstration System EPC9506
Table 3: Bill of Materials - Amplifier Board
Item
Qty
1
12
2
3
4
5
6
7
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
7
4
2
5
1
2
1
3
4
1
2
3
1
4
1
2
1
4
1
2
1
2
1
1
4
6
6
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
Reference
C1, C2, C3, C4, C11, C12, C13, C14
C55, C66, C67, C68
C5, C6, C15, C16, C62, C64, C65
C40, C44 C52, C60
C41, C45
C42, C43, C46, C47 C84
C50
C53, C54
C56
C57, C63, C70
C71, C72, C80, C81
C73
C82, C83
C90, C91, C92
Czvs1
D74, D75, D82, D83
J1
J44, J61
J50
J51, J70, J71, J90
JMP1
JP60, JP70
L60
Lzvs1, Lzvs11
Lzvs12
P49
P74, P75, P82, P83
Q1, Q2, Q11, Q12, Q60, Q61
R1, R2, R11, R12, R60, R61
R47
R48
R49
R50
R51
R52
R54
R55, R56, R84
R57
R58
R59
R62
R70
R73
R74
R75
R76, R77
Part Description
Manufacturer
Part #
10 nF, 100 V
TDK
C1005X7S2A103K050BB
4.7 µF, 50 V
4.7 µF, 16 V
22 nF, 25 V
47 pF, 50 V
1 µF, 50 V
2.2 nF, 50 V
1 nF, 50 V
100 nF, 25 V
100 nF, 25 V
DNP, 100 pF, 25 V
100 pF, 25 V
1 µF, 25 V
DNP 1 µF, 50 V
40 V, 30 mA
SMA Board Edge
.1" Male Vert.
.156" Male Vert.
.1" Male Vert.
DNP
.1" Male Vert.
10µ H
DNP, 270 nH
500 nH
DNP, 10k Ω
DNP, 1k Ω
40 V, 10 A, 16 mΩ
2.2 Ω
6.04k Ω
2.74k Ω
3.3k Ω
40.2k Ω
280k Ω
10k Ω
15k Ω
10 Ω
374k Ω
124k Ω
45.3k Ω
24 mΩ, 1 W
47k Ω
10k Ω
100 Ω
124 Ω
0Ω
Taiyo Yuden
TDK
TDK
Yageo
Taiyo Yuden
Yageo
Yageo
TDK
TDK
Generic
TDK
TDK
Taiyo Yuden
Diodes Inc.
Linx
Tyco
Würth
Würth
UMK325BJ475MM-T
C1608X5R1C475K
C1005X7R1E223K050BB
CC0402JRNPO9BN470
UMK107AB7105KA-T
CC0402KRX7R9BB222
CC0402KRX7R9BB102
C1005X7R1E104K050BB
C1608X7R1E104K
Generic
C1608C0G1H101J080AA
C1608X7R1E105K
C2012X7R1H105K125AB
SDM03U40
CONREVSMA013.062
4-103185-0-01
645002114822
61300311121
Tyco
Würth
CoilCraft
CoilCraft
Murata
Murata
EPC
Yageo
Panasonic
Panasonic
Panasonic
Yageo
Panasonic
Yageo
Yageo
Yageo
Panasonic
Panasonic
Panasonic
Susumu
Stackpole
Yageo
Panasonic
Panasonic
Yageo
4-103185-0-03
744314101
2222SQ-271JEB
2929SQ-501JEB
PV37Y103C01B00
PV37Y102C01B00
EPC2014
RC0402JR-072R2L
ERJ-2RKF6041X
ERJ-2RKF2741X
ERJ-2RKF3301X
RC0402FR-0740K2L
ERJ-2RKF2803X
RC0402FR-0710KL
RC0402JR-0715KL
RC0402FR-0710RL
ERJ-2RKF3743X
ERJ-2RKF1243X
ERJ-2RKF4532X
PRL1632-R024-F-T1
RMCF0603JT47K0
RC0603JR-0710KL
ERJ-3EKF1000V
ERJ-3EKF1240V
RC0603JR-070RL
–
–
(continued on next page)
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 |
| PAGE 7
QUICK START GUIDE
Demonstration System EPC9506
Table 3: Bill of Materials - Amplifier Board (continued)
Item
Qty
46
47
48
49
50
51
52
53
54
55
1
1
1
2
3
1
1
2
2
1
56
2
Reference
Part Description
Manufacturer
Part #
R82
R83
RT1
TP1, TP2
U40, U44, U60
U50
U70
U71, U80
U72, U81
U90
JPR1 (JP60 right), JPR2
(JP70 right)
31.6 Ω
191 Ω
470k Ω at 25°C
SMD probe loop
100 V eGaN Driver
Step Down Controller
Programmable Oscillator – 6.78 MHz
2 In AND
2 In NAND
5.0 V, 250 mA, DFN
Panasonic
Panasonic
Murata
Keystone
Texas Instruments
Linear Technologies
EPSON
Fairchild
Fairchild
Microchip
ERJ-3EKF31R6V
ERJ-3EKF1910V
NCP15WM474E03RC
5015
LM5113TM
LT3741EUF#PBF
SG-8002CE
NC7SZ08L6X
NC7SZ00L6X
MCP1703T-5002E/MC
.1” jumper
TE Connectivity
382811-8
EPC would like to acknowledge Würth Electronics (www.we-online.com/web/en/wuerth_elektronik/start.php) for their support of this project.
PAGE 8 |
| EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015
.1" Ma le Ve rt.
1
2
J 90
V7 IN
L ogic Supply
7.5 VDC - 12 VDC
C73
100 pF, 25 V
OSC
Oscillator Disable
.1" Male Vert.
1
2
J 70
External Oscillator
.1" Male Ve rt.
ExtOsc
1
R73
10k
2
5V
OSC
1
R70
47k
OSC
OSC
3
2
1
ExtOsc
C90
1 µF , 25 V
C72
100 nF, 25 V
5V
5V
OUT
.1" Ma le Ve rt.
2
R73
10k
D75
40 V 30 mA
DNP 1k
P 75
V7 IN
Logic 2Supply Regulator
1
J 90
124 Ω
R75
5V
IntOsc
OSC
ExtOsc
5V
L _S ig
V7 IN
B
A
5V
5V
C90
1 µF , 25 V
C92
1 µF , 25V
5V
C72
100 nF, 25 V
B
A
3
U70
Pgm Osc.
OUT
GND
VCC
5V
C71
100 nF, 25 V
Oscillator
OE
5V
R_ S ig
5V
OUT
R74
100 Ω
2
L _S ig
R77
D75
40 V 30 mA
DNP 1k
P 75
C91
1 µF , 25 V
C92
1 µF , 25V
5V
C47
47pF , 50V
R_ S ig 1
Deadtime Left
2
C43
47pF , 50V
L _S ig
0Ω
R75
2
C42
47pF , 50 V
R_ S ig
124 Ω
1
R76
R_ S ig
0Ω
C46
47pF , 50V
L _S ig 1
D74
40 V, 30 mA
DNP 1k
P74
Deadtime Right
1
Logic Supply Regulator
IN
U90
5.0V 250 mA DF N
U72
NC7SZ00L6X
C70
100 nF, 25 V
IntOs c
Y
U71
NC 7S Z 08L 6X
Internal/External Oscillator
C91
1 µF , 25 V
OSC
1
R70
47k
OSC
Deadtime Left
1
L ogic Supply
7.5 VDC - 12 VDC
IN
U90
5.0V 250 mA DF N
C73
100 pF, 25 V
OSC
U72
NC7SZ00L6X
2
D74
40 V, 30 mA
DNP 1k
P74
Oscillator Disable
.1" Male Vert.
1
C70
100 nF, 252V
J 70
IntOs c
100 Ω
R74
Deadtime Right
1
External Oscillator
U71
NC 7S Z 08L 6X
Y
ExtOsc
.1" Male Ve rt.
1
2
J 71
3
2
1
Figure 5: EPC9506 Source Board Amplifier Schematic
V7 IN
5V
B
A
3
U70
Pgm Osc.
OUT
GND
VCC
5V
C71
100 nF, 25 V
Oscillator
OE
5V
B
A
5V
Internal/External Oscillator
IntOsc
4
2
1
2
1
2
1
2
2
U40
LM5113TM
VOUT
Pre-Regulator
PreRegulator
EPC9507PR_r1_1.SchDoc
GND
VIN
Temp
Gate Driver
U44
LM5113TM
Gate Driver
5V
C44
4.7µF , 16V
C40
4.7µF , 16 V
5V
5V
5V
VOUT
VIN
0Ω
R76
C46
47pF , 50V
GLH2
L _S ig GLL2
1
5V
OutB
GRH2
GRL2
5 VHS2
OUT B
C45
22nF , 25V
5VHS2
GLH1
GLL1
5V
OUTA
GRH1
GRL1
5VHS 1
OUTA
C41
22nF , 25V
5VHS 1
2
2 GRL2
Q11
EPC2014
0Ω
R77
2 GLL2
Q12
EPC2014
2
1
P robe Hole
J2
470k @ 25°C
1
VAMP
VOUT
GLH2
GLL2
5V
Pre-Regulator
EPC9507PR_r1_1.SchDoc
VOUT
VIN
VOUT
VIN
GLH2 1
C14
10nF , 100V
VAMP
Differential ZVS Class DPreRegulator
Wireless Power Source Board using EPC2014
GND
OutB
C13
10nF , 100V
VAMP
Q1
GRL1
R2
2Ω2
1
TP2
VAMP
Operation Only
Q11
EPC2014
2
1
F D2
J 50
.156" Male Vert.
VIN
OUT B
1
JP6
.1" Ma le
P re-R egul
VIN
P robeHole
J3
Lzvs 11
DNP 270nH
L zvs12
500nH
Lzvs 1
DNP 270 nH
Main Supply
6 V ~ 32 V 2 A max EPC9506
Local Fiducials
F D1
Board Standoffs
2 GLL2
Q12
EPC2014
VAMP
1
P robe Hole
J2
RT 1
470k @ 25°C
T emp
Demonstration System EPC9506
Differential ZVS Class D Wireless Power Sourc
R12
2Ω2
C16
4.7µF 50V, 2.2µF 100V
Secondary Amplifier
VAMP
4.7µF 250V,GRL2
2.2µF 100V
R11
2Ω2C15
Ground Post
OUTA
VAMP
Z V S Tank Cir cuit
Czvs1
DNP 1 µF 50V
J1MP 1
DNP
J 44
GLL1
Q2
EPC2014
2
Main Amplifier
Single Ended
.1" Ma le Ve rt.
GRH2 1
C12
10nF , 100V
C11
10nF 5, 100V
VHS2
GRH2
GRL2
2
S MD probe loop
VAMP
J P 60
.1" Ma le Ve rt.
VIN
VAMP
C6
EPC2014
4.7µF 50V, 2.2µF 100V
R1
VAMP
2Ω2
J1
SMA Board Edge
GLH1
1
GRH1 1
C4
10nF , 100V
VAMP
VAMPOUT B
C45
22nF , 25V
5VHS2
GLH1
GLL1
5V
OUTA
GRL1
5VHS 1
C3
10nF ,GRH1
100V
VAMP
OUTA
V
1AMP
C2
10nF , 100V SMD probe
C5 loop
4.7µF 50V, 2.2µF 100V
T P1
VAMP
C1 C41
10nF
, 100V
22nF
, 25V
5VHS 1
VAMP
Temp
P re-R egulator B ypass
Gate Driver
OUT B
U44
P robeHole
LM5113TM
J3
Lzvs 11
DNP 270nH
L zvs12
500nH
Gate Driver
Lzvs 1
DNP 270 nH
Main Supply
6 V ~ 32 V 5V
2 A max EPC9506
5V
1
2
VIN
VAMP
C44
4.7µF , 16V
T emp
U40
LM5113TM RT 1
OUTA
VAMP
C40
4.7µF , 16 V
J 50
.156" Male Vert.
C47
47pF , 50V
R_ S ig 1
R12
Secondary Amplifier
2GLH2 1 2Ω2
GRH2 1
5V
Czvs1
DNP 1 µF 50V
Ground Post
R11
2Ω2
5V
Z V S Tank Cir cuit
C43
47pF , 50V
EPC2014
.1" Ma le Ve rt.
1
J 44
GLL1
Q2
L _S ig
S MD probe loop
1
TP2
2
GRL1
Q1
EPC2014
VAMP
R_ SAmplifier
ig
Main
R2
2Ω2
47pF , 50 V
GLH1 C42
1
GRH1 1
R1
2Ω2
SMD probe loop
1
T P1
t°
J 71
GND
1
2
4
2
t°
J P 70
.1" Male Vert.
Temp
1
2
Temp
1
2
J P 70
.1" Male Vert.
GND
3
2
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 |
3
2
1
QUICK START GUIDE
| PAGE 9
2
C54
2.2 nF , 50V
R54
15k
R49
3.3k
VREF
P 49
1
2
1
Temp
R47
6.04k
R48
2.74k
1
R59
45.3k
VREF
C55
10nF , 100V
6
3
C nt1
5
SS
C nt2
1.5V
VC
Rt
E N/UVLO
V REF
S ync
O sc
U50
LT3741EUF #PBF
10
12
2
40.2k
R50
1
2
13
P reDis
VREF
C57
100nF , 25V
C53
2.2nF , 50V
R58
124k
VIN
Cnt
UVLO
20
Figure 6: EPC9506 -Source Board Pre-Regulator Schematic
Current Set
DNP 10k
1
P reDis
1
2
.1" Male Ve rt.
1
2
1
2
J 51
1
PreRegulator Disable
GND
4
R57
374k
GND
11
VIN
GND
14
2
1
2
GND
21
1.2V
C56
1nF , 50V
1
7
1
9
LG
18
VCCINT
8
HG
17
15
16
19
C50
1µF , 50V
VIN
R56 10Ω
R55 10Ω
Vfd bk
2 VOUT
2 S ns+
C5 2
4.7µF , 16V
1
2
1
2
PAGE 10 |
2
R52
10k
R51
280k
VOUT
10Ω
R84
2
C84
47pF , 50V
HG 1
5V
5V
B
A
5V
C60
4.7µF , 16V
5V
C80
100nF , 25V
B
A
C81
100nF , 25V
LG PR
HG PR
PWM
PWM
5V
P WM
5V
Buffer
Buffer
U81
NC7SZ00L6X
Gate Driver
U60
LM5113TM
Y
U80
NC7SZ08L6X
PR
R82
31.6Ω
2
191Ω
2
C83
100pF , 25V
D83
40V 30mA
DNP 1k
P 83
Deadtime Lower
1
R83
GL PH
GL PL
5V
SW
G UP H
G UP L
5VUP
SW
C63
100nF , 25V
5VUP
C82
100pF , 25V
D82
40V 3 0mA
DNP 1k
P 82
Deadtime Upper
1
R61
2Ω2
R60
1 2Ω2
1
LG P R
GL PH
GUPH
HG
GL PL
Q60
GND
EPC2014
2
P robeHole
1
SW
G UP L
Q61
EPC2014
J 62
2
VIN
VIN
S ns+
1
Ground Post
.1" Ma le Ve rt.
1
J 61
C66
10nF , 100V
VIN
10uH
L 60
2
C67
10nF , 100V
VIN
24mΩ 1W
R62
C64
4.7µF 50V, 2.2µF 100V
VIN
C65
4.7µF 50V, 2.2µF 100V
VIN
VOUT
C62
4.7µF 50V,
2.2µF 100V
VOUT
C68
10nF , 100V
VIN
QUICK START GUIDE
Demonstration System EPC9506
| EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015
For More Information:
Please contact info@epc-co.com
or your local sales representative
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EPC Products are distributed through Digi-Key.
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Demonstration Board Notification
The EPC9506 board is intended for product evaluation purposes only and is not intended for commercial use. As an evaluation tool, it 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. No
Licenses are implied or granted under any patent right or other intellectual property whatsoever. EPC assumes no liability for applications assistance, customer product design, software
performance, or infringement of patents or any other intellectual property rights of any kind.
EPC reserves the right at any time, without notice, to change said circuitry and specifications.
