Development Board
EPC9511 Rev. 1.0
Quick Start Guide
EPC2107
10 W Multi-Mode Wireless Power Amplifier Board
QUICK START GUIDE
Development Board EPC9511
DESCRIPTION
The EPC9511 is a high efficiency, power demonstration amplifier
capable of operating to multiple wireless power standards. It can
operate to the Qi standard of the Wireless Power Consortium (WPC),
the Power Matters Alliance (PMA) standard (now merged with AirFuel™
Alliance) and AirFuel (formerly A4WP) wireless power standards. In
AirFuel resonant mode, hence referred to as AirFuel mode, the EPC9511
system operates at 6.78 MHz with the amplifier circuit configured for
ZVS operation. In this mode, the system can deliver up to 10 W of power
into the source coil. In Qi/PMA inductive mode, the system operates
at 165 kHz with the amplifier circuit configured for hard-switching
operation and can deliver up to 5 W of load power into the device. An
external oscillator can be used to operate the board to any desired
frequency. The purpose of the EPC9511 is to simplify the evaluation
process of both resonant and inductive wireless power technologies
using eGaN® FETs and eGaN® ICs.
47 mm
EPC9511 Amplifier Board
57 mm
Figure 1: EPC9511 wireless power amplifier board
1 VDC – 66 VDC – AirFuel mode
1 VDC – 26 VDC – Qi/PMA mode
The amplifier board features various enhancement-mode GaN devices
which are:
• The 100 V rated EPC2107 half-bridge eGaN® IC with integrated
synchronous bootstrap FET used in the main wireless power amplifier.
SEPIC
pre-regulator
19 VDC
Coil
• The 100 V rated EPC2036 eGaN FET used in the ZVS disconnect switch
circuit and the main device of the SEPIC converter pre-regulator.
| Icoil |
The amplifier is equipped with a pre-regulator controller that adjusts
the voltage supplied to the class D amplifier based on the limits of
three parameters: coil current magnitude, DC power delivered to
the amplifier, and maximum amplifier supply voltage. The controller
ensures that all the three parameters operate within their respective
limits. 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. Based on load
conditions, the controller will ensure the correct operating conditions
for the class D amplifier based on the AirFuel standard. Operation in
the Qi/PMA mode follows the same procedure where only the voltage,
power, and current levels are adjusted accordingly. While this does not
fully follow the Qi standard, it allows the EPC9511 to demonstrate the
capabilities of eGaN FETs and ICs in a multi-mode system. Enhanced
micro-controller based control systems can allow the system to operate
and be compliant to either standard.
The pre-regulator can be bypassed to allow testing with custom control
hardware. The board further allows easy access to critical measurement
2 |
6.78 MHz– AirFuel Mode
165 kHz – Qi/PMA Mode
Icoil
• The 100 V rated EPC2038 eGaN FET used in the controller circuit for
changing set points based on operating mode.
The amplifier is configured for single ended operation and includes
the gate driver(s), oscillators, and feedback controller for the preregulator, which ensures operation for wireless power control based on
the AirFuel standard. This configuration allows for testing compliant to
the AirFuel Class 2 standard over a load range as high as ±35j Ω. The
pre-regulator features the 100 V rated 65 mΩ EPC2036 as the main
switching device for a SEPIC converter.
580 mAACRMS – AirFuel mode
1500 mAACRMS – Qi/PMA mode
CS
ZVS Class D
amplifier
VAMP
IAMP
X
Controller
PAMP
Control reference signal
Figure 2: Block diagram of EPC9511 multi-mode capable
wireless power amplifier controller.
nodes facilitating accurate power measurement instrumentation
hookup. A simplified control diagram of the amplifier board is given
in figure 2.
For more information on the EPC2107, EPC2036, and EC2038 eGaN
FETs please refer to the respective datasheet available from EPC at
www.epc-co.com. The datasheet should be read in conjunction with
this quick start guide.
DETAILED DESCRIPTION
The Amplifier Board (EPC9511)
Figure 2 shows the control system block diagram of the EPC9511 ZVS
class D amplifier with pre-regulator and figure 3 shows the power
schematic. 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.
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QUICK START GUIDE
Development Board EPC9511
Table 1: Performance Summary (TA = 25°C) EPC9511 Rev. 1.0
Symbol
Parameter
Conditions
Min
Max
Units
VIN
Also Used in Bypass
Mode for Logic Supply
17
24
V
VIN
Main Input Voltage Range –
Pre-Regulator Mode
Amplifier Input
Voltage Range
Bypass Mode
0
80
V
VIN_UVLO+
VIN Rising Threshold
Regulated Mode Only
18.3
V
VIN_UVLO-
VIN Falling Threshold
Regulated Mode Only
VAMP
IOUT
Vextosc
VPre_Disable
IPre_Disable
VExt_Osc
IExt_Osc
VMode_Src
IMode_Src
VMode_Sel
IMode_Sel
VMode_Ret
IMode_Ret
Regulated AirFuel Mode
Amplifier Supply Voltage Regulated
Qi/PMA Mode
Switch Node
Output Current
External Oscillator
Input ‘Low’
Input Threshold
Input ‘High’
Pre-regulator Disable
Floating
Voltage Range
Pre-regulator Disable
Floating
Current
External Oscillator
Open Drain/
Voltage Range
Collector
External Oscillator
Open Drain/
Current Range
Collector
Mode Select
Source Voltage
Mode Select
Source Current
AirFuel and Qi/PMA
Mode Select Input Voltage
modes
AirFuel
and Qi/PMA
Mode Select Input Current
modes
Mode Select Return
Voltage
Mode Select Return
Current
17.3
V
66
26
V
1.7*
A
-0.3
2.4
0.8
5
V
-0.3
5.5
V
-10
10
mA
-0.3
5
V
-25
25
mA
4.5
5.5
V
30
mA
-0.3
5.1
V
-50
30
mA
-2.5
2.5
V
-25
25
mA
* Maximum current depends on die temperature – actual maximum current will be subject to switching
frequency, bus voltage and thermals.
The amplifier comes with two of its own low supply current oscillators.
This first oscillator is pre-programmed to 6.78 MHz ± 678 Hz and
the second to 165 kHz. The oscillator signal can be disconnected by
removing jumper JP71 and can then be sourced from an external
oscillator when connected to J70. J70 can also serve as an oscillator
reference output when using the internal oscillators.
The pre-regulator can be disabled by inserting a jumper into 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 EPC9511 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 can no longer regulate either the coil current or delivered
power. This can occur when the magnitude of the load impedance is
too high in AirFuel mode or if the device unit draws insufficient current
in the inductive (Qi) mode.
The EPC9511 amplifier is also equipped with Under Voltage Lockout
(UVLO) protection which prevents the amplifier from starting up with
insufficient voltage on the main supply. This feature is only operational
in the regulated mode and does not affect operation in bypass mode.
In addition, the EPC9511 has protection against reverse polarity
connection of the main supply that is capable of conducting as much
as 11 ADC for a short period.
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 in AirFuel mode and 26 V in Qi/PMA mode and the maximum power
drawn by the amplifier is pre-set to 10 W in either mode. The coil current
magnitude is pre-set to 580 mARMS in AirFuel mode and 1500 mARMS in
Qi/PMA mode, but can be made adjustable using P25. The pre-regulator
comprises a SEPIC converter that can operate at full power with an input
supply voltage from 17 V through 24 V.
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, the operator
must provide 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 EPC9511 is also provided with a miniature high efficiency switchmode 5 V supply to power the logic circuits on board such as the gate
drivers and oscillator allowing the EPC9511 board to operate from a
single source.
Bypass mode
connection
JP1
Pre-regulator
jumper
VAMP
Coil
connection
Preregulator
Q1Aa
VIN
LZVS
J1
+
Q1Ab
CZVS
Q2
Q3
Figure 3: Power circuit schematic of EPC9511 amplifier.
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QUICK START GUIDE
Development Board EPC9511
ZVS Timing Adjustment (AirFuel Mode ONLY)
NOTE. the amplifier supply voltage VAMP is absent from the equation as it
Setting the correct time to establish ZVS transitions is critical to
achieving high efficiency with the EPC9511 amplifier when operating
at high frequency. 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 (P71 and P72)
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 8 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 EPC9511 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 Vin+ 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 7.
4. Turn on the control supply after ensuring that the supply is
approximately 19 V with a 2 A current limit.
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 80 V).
6. While observing the oscilloscope, adjust the applicable
potentiometers to achieve the green waveform of figure 8.
7. Replace the potentiometers with fixed value resistors if required.
Remove the jumper from JP50 and install it back into JP1 to revert
the EPC9511 back to pre-regulator mode.
Determining component values for LZVS (AirFuel Mode ONLY)
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 and switch-node transition time will determine the
value of inductance for LZVS = LZVS1 + 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. The value of the
inductance can be calculated using the following equation:
LZVS =
Δtvt
8 fsw (COSSQ + Cwell )
(1)
VAMP
(2)
COSSQ = 1
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.
QUICK START PROCEDURE
The EPC9511 amplifier board 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 5 through 11
for proper connection and measurement setup before following the
testing procedures.
The EPC9511 can be operated using any one of two alternative methods
to either wireless power standard:
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 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. It is not
necessary to turn up the voltage of this supply when instructed to
power up the board, instead simply turn on the supply.
1. Make sure the entire system is fully assembled prior to making
electrical connections and make sure jumper JP1 and JP71 are
installed. Select AirFuel or Qi/PMA mode according to figure 5 and 6.
Also make sure the source coil is attached to the amplifier and that
the device board is connected to a load.
2. With power off, connect the main input power supply bus to J1 as
shown in figure 4. Note the polarity of the supply connector.
3. Make sure all instrumentation is connected to the system.
4. Turn on the main supply voltage (19 V). It is not necessary start at 0 V.
Instead, preset the voltage to 19 V and then power up.
5. Once operation has been confirmed, observe the output voltage,
efficiency and other parameters on both the amplifier and device
boards.
Where:
4 |
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:
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
6. For shutdown, please follow the above five steps in the reverse order.
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QUICK START GUIDE
Development Board EPC9511
b. Operation bypassing the pre-regulator
Precautions
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. NOTE: In this mode there is
no protection for ensuring the correct operating conditions for the
eGaN devices.
The EPC9511 demonstration system has no controller or enhanced
protection systems and therefore should be operated with caution.
Some specific precautions are:
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
EPC9511 in bypass mode. Also make sure a source coil is attached to
the amplifier and that device board is connected to a load.
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 4.
3. With power off, connect the control input power supply bus to +VIN
(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 in the 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 80 V or the current rating of the main EPC2107 ICs).
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. Monitor the temperature of the FETs as device failures can
occur if the junction temperature exceeds 150°C.
8. For shutdown, please follow the above 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 7).
2. AVOID using a Lab Benchtop programmable DC load as the load for the device boards.
These loads have low control bandwidth and will cause the EPC9511 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.
1. Never operate the EPC9511 system with a receiving device board that
is AirFuel, Qi or PMA compliant as this system does not communicate
with the device to correctly setup the required operating conditions.
Doing so can lead to failure of the compliant device unit. Contact EPC
to obtain instructions should operating the system with a compliant
device be required. Please contact EPC at info@epc-co.com should
the tuning of the coils be required to be changed to suit specific
conditions so that it can be correctly adjusted for use with the ZVS
class-D amplifier.
2. There is no heat-sink on the devices and during experimental
evaluation it is possible to 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 EPC9511 amplifier board into your VNA in an
attempt to measure the output impedance of the amplifier. Doing
so will severely damage the VNA. Contact EPC should you require
information on the output impedance of the amplifier.
4. It is strongly recommended to place a 5 mm thick Plexiglas spacer on
top of the source coil during testing to protect the user from exposed
electrical contacts and static discharge that can cause the amplifier
to fail.
5. The operator should not change oscilloscope probe locations
or measurements on the board while in operation. Turn off first
before moving the probe to a new location. Failure to follow this
recommendation can lead to board failure.
6. Never touch the coil, or any exposed conductors on the any of the coils
to avoid RF burns and potential failure of the amplifier.
NOTE.
The EPC9511 can also be purchased as part of EPC9121 demonstration kit. The EPC9121
wireless power system comprises four boards namely:
1. A multi-mode capable EPC9511 source board (transmitter or power amplifier)
2. A multi-mode source coil (transmit coil) compatible with the AirFuel Class 2 standard
and Qi (A6) /PMA standards
3. An AirFuel compatible Category 3 AirFuel device coil (receive coil) with rectifier and DC
output
4. A Wireless Power Consortium (Qi) and Power Matters Alliance (now AirFuel) compatible
device coil (receive coil) with rectifier and DC output
THERMAL CONSIDERATIONS
The EPC9511 demonstration system showcases the EPC2107, EPC2036,
and EPC2038 eGaN FETs and ICs 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 EPC9511 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.
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Development Board EPC9511
Bypass Connection
Operating mode
LED indicators
Coil current setting
(not installed)
+
19 VDC
VIN Supply
(Note Polarity)
Pre-Regulator Jumper
Pre-regulator
switch-node
oscilloscope probe
Amplifier
switch-node main
oscilloscope probe
Ground post
Ground Post
Amplifier
timing setting
(not installed)
Source coil
connection
External
oscillator
Internal oscillator
selection jumper
Mode select
& LED drive
Disable
pre-regulator
jumper
V
Amplifier supply voltage
(0 V – 80 Vmax)
Figure 4: Proper connection and measurement setup for the EPC9511 amplifier board.
AirFuel Source
Qi / PMA
(+In) (+5 V out) (+In)
Return
(-GND)
Amplifier Board – Top-side
Circuit not included with demo
Shown in AirFuel mode position
AirFuel
mode
Qi / PMA
mode
Switch MUST have OFF position!
Figure 5: Proper connection setup for operating mode selection using a switch and LEDs.
AirFuel Source
Qi / PMA
(+In) (+5 V out) (+In)
Return
(-GND)
Amplifier Board – Top-side
Mode select jumper position:
Solid = AirFuel mode
Dash = Qi/PMA mode
GND = Not used
Figure 6: Proper connection setup for operating mode selection using jumpers.
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Development Board EPC9511
Do not use
probe ground lead
Ground probe
against post
Place probe tip
in large via
Minimize loop
Figure 7: Proper measurement of switch Node waveforms.
Q1 turn-off
Q2 turn-off
VAMP
VAMP
Q1 turn-on
Q2 turn-on
0
Shoot-through
0
time
Partial ZVS
Shoot-through
time
Partial ZVS
ZVS
ZVS
ZVS + Diode
Conduction
ZVS + Diode
Conduction
Figure 8: ZVS timing diagrams
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Development Board EPC9511
Table 2: Bill of Materials - Amplifier Board
Item
Qty
1
2
3
2
2
3
Reference
Part Description
Manufacturer
Part #
1 µF, 10 V
10 nF, 100 V
2.2 µF 100 V
Würth
TDK
Taiyo Yuden
885012105012
C1005X7S2A103K050BB
HMK325B7225KN-T
100 nF, 25 V
Würth
885012105018
5
1
C1, C80
C11, C12
C15, C64, C65
C2, C4, C5, C51, C70, C71, C72, C75, C77, C78, C81,
C100, C101, C130, C200, C210
C20, C22, C46, C131, C135
C21 (Only Populate with Tsns1)
4
16
5
6
1 nF, 50 V
680 pF, 50 V
Würth
Murata
885012205061
GRM155R71H681KA01D
7
1
C45 (Not Populated)
10 nF, 100 V
Murata
C1005X7S2A103K050BB
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
56
57
1
2
1
1
1
2
2
1
2
1
5
2
1
3
1
2
11
1
2
1
1
1
3
1
1
2
1
1
1
4
3
1
1
1
1
2
1
2
3
3
1
3
1
1
2
1
1
1
1
1
C73 (Not Populated)
C133, C223 (Not Populated)
C220
C221
C27
C3, C95
C30, C50
C32
C43, C53
C52
C6, C7, C31, C44, C82
C61, C62
C63
C90, C91, C92
Czvs1
D1, D95
D2, D3, D21, D40, D41, D42, D47, D48, D49, D71, D72
D20
D203, D221
D35
D36
D37
D4, D100, D101
D60
D90
GP1, GP60
J1
J100
J2
J70, JP1, JP50, JP71
JP10, JP72, JP100
L60
L80
L90
Lsns (Only Populate with Tsns1)
Lzvs1, Lzvs2
P25
P71, P72
Q1
Q2, Q3, Q60
Q20, Q46, Q135
Q61 (Not Populated)
R132, R200, R222
R133
R134
R2, R82
R201
R21
R220
R223
22 pF, 50 V
1 nF, 50 V
100 nF, 16 V
1 nF, 50 V
82 nF, 16 V
22 nF, 25 V
100 nF, 100 V
47 nF, 25 V
10 nF, 50 V
100 pF, 50 V
22 pF, 50 V
4.7 µF, 50 V
10 µF, 35 V
1 µF, 25 V
1 µF, 50 V
40 V, 300 mA
40 V, 30 mA
25 V, 11 A
3 V9, 150mW
LED 0603 Yellow
LED 0603 Green
LED 0603 Red
5 V1, 150 mW
100 V, 1A
40 V, 1A
.1" Male Vert.
.156" Male Vert.
.1" Male Vert.
SMA Board Edge
.1" Male Vert.
.1'' Shunt Jumper
100 µH 2.2 A
10 µH 150 mA
47 µH 250 mA
82 nH (only with Tsns1)
390 nH
10 kΩ
1 kΩ
100 V 220 mΩ with Sync Boot FET
100 V 65 mΩ
100 V 2.8 Ω
100 V 6 A 30 mΩ
18 kΩ 1%
6.81 kΩ 1%
470 kΩ
20 Ω
4.53 kΩ 1%
51 Ω 1/2 W (with Tsns2), 10 kΩ (with Tsns1)
71.5 kΩ
6.8 kΩ 1%
TDK
Murata
Würth
Murata
Murata
Würth
Murata
Würth
Würth
Würth
Würth
Würth
Taiyo Yuden
Murata
Würth
ST
Diodes Inc.
Littelfuse
Bournes
Würth
Würth
Würth
Bournes
On-Semi
Diodes Inc.
Würth
Würth
Würth
Linx
Würth
Würth
Würth
Würth
Würth
CoilCraft
CoilCraft
Murata
Murata
EPC
EPC
EPC
EPC
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
C1005C0G1H220J050BA
GRM1555C1H102JA01D
885012205037
GRM1555C1H102JA01D
GRM155R71C823KA88D
885012205052
GRM188R72A104KA35D
885012205054
885012205067
885012005061
885012005057
885012209048
GMK325BJ106KN-T
GRM188R61E105KA12D
885012207103
BAT54KFILM
SDM03U40-7
SMAJ22A
CD0603-Z3V9
150060YS75000
150060VS75000
150060RS75000
CD0603-Z5V1
MBRS1100T3G
PD3S140-7
61300111121
645002114822
61300411121
CONSMA003.062
61300211121
60900213421
744871101
74479778310
7440329470
1515SQ-82NJEB
2929SQ-391JE
PV37Y103C01B00
PV37Y102C01B00
EPC2107
EPC2036
EPC2038
EPC2007C
ERJ-2RKF1802X
ERJ-2RKF6811X
ERJ-2RKF4703X
ERJ-2RKF20R0X
ERJ-2RKF4531X
ERJ-P06J510V / ERJ-P06J103V
ERJ-3EKF7152V
ERJ-2RKF6801X
(continued on next page)
8 |
| EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2016
QUICK START GUIDE
Development Board EPC9511
Table 2: Bill of Materials - Amplifier Board (continued)
Item
Qty
Reference
Part Description
Manufacturer
Part #
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
92
93
94
1
1
1
1
4
1
1
1
2
1
2
1
4
4
1
2
1
1
2
2
1
1
1
1
1
1
1
1
1
1
5
1
1
1
2
1
1
R224
R25
R26
R27
R3
R30, R102, R103, R104
R31
R32
R33
R35, R36
R37
R38, R91
R4
R40, R130, R202, R203
R41, R49, R131, R221
R42
R43, R48
R45 (Not Populated)
R44, R90
R46, R135
R50
R51
R52
R53
R54
R60
R61
R70
R71
R72
R73, R76, R77, R100, R101
R75
R80
R92
TP1, TP2
Tsns1 (Not Populated)
Tsns2
330 kΩ
4.3kΩ 1% (with Tsns2), 6.81 kΩ (with Tsns1)
22 kΩ 1% (with Tsns2), 2.8 kΩ (with Tsns1)
3.3 kΩ 1%
27 kΩ
100 Ω
71 kΩ 5 1%
8.2 kΩ 1%
75 kΩ
634 Ω
150 kΩ 1%
49.9 kΩ 1%
4.7 Ω
261 kΩ
6.04 kΩ
36.5 kΩ
15.4 kΩ
1.5 kΩ
100 kΩ 1%
11.3 kΩ
10 Ω
124 kΩ 1%
71.5 kΩ 1%
1.00 kΩ
0Ω
80 mΩ 0.4 W
220 mΩ 0.333 W
47 kΩ
430 Ω
180 Ω
10 kΩ
68 kΩ
2.2 Ω
9.53 kΩ 1%
SMD Probe Loop
10 µH 1:1 96.9%
1:20 Current Xrmr
ERJ-2RKF3303X
ERJ-2RKF4301X / ERJ-2RKF6811X
ERJ-2RKF2202X / ERJ-2RKF2801X
ERJ-2RKF3301X
ERJ-2RKF2702X
ERJ-3EKF1000V
ERJ-6ENF7152V
ERJ-2RKF8201X
ERJ-2RKF7502X
ERJ-2RKF6340X
ERJ-2RKF1503X
ERJ-2RKF4992X
RMCF0402FT4R70
ERJ-3EKF2613V
ERJ-2RKF6041X
ERJ-2RKF3652X
ERJ-2RKF1542X
ERJ-2RKF1501X
ERJ-2RKF1003X
ERJ-2RKF1132X
ERJ-3EKF10R0V
ERJ-2RKF1243X
ERJ-2RKF7152X
ERJ-2RKF1001X
ERJ-2GE0R00X
WSLP0603R0800FEB
RL1220S-R22-F
ERJ-2RKF4702X
ERJ-2RKF4300X
ERJ-2RKF1800X
ERJ-2RKF1002X
ERJ-2RKF6802X
RMCF0402FT2R20
ERJ-2RKF9531X
5015
PFD3215-103ME
CST7030-020LB
95
1
U1
100 V eGaN Driver
96
97
98
99
100
101
102
103
104
105
106
107
108
3
1
1
1
1
1
1
1
1
1
1
1
1
U130, U200, U220
U210
U30
U50
U70
U71
U72
U75
U77
U78
U80
U90
PCB
Comparator
+Edge-trig D-Flop with Clr & Rst
Power & Current Monitor
Boost Controller
Pgm Osc.
2 In NAND
2 In AND
Dither Oscillator
MUX
Reconfig Logic 57
Gate Driver with LDO
1.4 MHz 24 V 0.5 A Buck
EPC9511 Amplifier Board
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Stackpole
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Vishay Dale
Susumu
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Stackpole
Panasonic
Keystone
CoilCraft
CoilCraft
National
Semiconductor
Texas Instruments
Fairchild
Linear
Texas Instruments
EPSON
Fairchild
Fairchild
mAxim
Fairchild
Fairchild
Texas Instruments
MPS
EPC
LM5113TM
TLV3201AIDBVR
NC7SZ74L8X
LT2940IMS#PBF
LM3478 mAX/NOPB
SG-8002CE-PHB-6.780MHz
NC7SZ00L6X
NC7SZ08L6X
DS1090U-32+
NC7SZ157L6X
NC7SZ57L6X
UCC27611DRV
MP2357DJ-LF
B5008 Rev. 1.0
EPC would like to acknowledge Würth Electronics (www.we-online.com/web/en/wuerth_elektronik/start.php) for their support of this project.
Table 3: Off Board Components
Item
Qty
1
2
3
1
2
1
Reference
Part Description
Manufacturer
Part #
SW1000
D1000, D1001
J1000
Rocker SW SPDT 120 V 5 A
40x12mm LED backlight
Con4x1.1F
E-Switch
BCrobotics
TE Connectivity
100SP3T1B1M1QEH
LEDB-003
534237-2
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2016 |
| 9
HFOsc
1
LFosc
3
1
0
4
1
2
1
2
IntOsc
GND
JP71
.1" Male Vert.
QiMode
A5 V
2
2
A4WPmode
HF Oscillator
3
5
D1000
SW1000
D1001
DNP
DNP
40x12 mm
DNP
J1000
J100
1
2
3
4
1
2
3
4
R103
100 Ω
4
Figure 9: EPC9511 - ZVS class-D amplifier schematic
R1 00
10k
.1" Male Vert.
1
C100
100 nF, 25 V
D100
CD 0603-Z5V1
R101
10 K
C101
100 nF, 25 V
2
JC1
1
Czvs1
1μF 50 V
AirFuel / WPC-Qi Mode Select & LED driver
D101
CD0603-Z5V1
A4WPmode
2
1
R102
100 Ω
2
Con4x1.1 F
DNP
A5V 1
5V
Q5V
LEDret
QiMode
1
1
JC0
7
8
L F Oscillator
1
J2
SMA Board Edge
Lsns
82 nH
EMPTY
Va mp
Vamp
1
1
A4WPmode
2
J1
J0
6
5
T P1
T P2
Switch Change Detect
R77
10 K
C20
1nF, 50 V
Q2
EPC2036
100 V 65 mΩ
SMD probe loop
2
1
2
GND
QiMode
ZVS Tank Circuit
Vo ff
L Fosc
Dither
Q20
EPC2038
100 V 2.8 Ω
OutA
L zvs2
390 nH
OSC
AirFuel / WPC-Qi Mode Select & LED external
1
Pre
Scale
OSC
C27
82 nF, 16 V
A4WPmode
Q3
EPC2036
100 V 65 mΩ
2 QiMode
R104
100 Ω
ZVS Tank Disconnect
Development Board EPC9511
R75
68 K
U75
DS 1090U-32+
R2 7
3.3 K 1%
Tsns1
10 μH 1:1 96.9%
EMPTY
SMD probe loop
40x12 mm
C75
100 nF, 25 V
T sns2
CST7030-020LB
1:20 Current Xrmr
L zvs1
390 nH
Jumper 100
U78
Reconfig Logic 57
NC7SZ57L6X
C78
100 nF, 25 V
Q5 V
VCC
IntOsc
L in
Internal / External Oscillator
4
6
5V
Q5 V
Bias
XNOR
1
R76
10 K
C70
100 nF, 25 V
2
3
V CC
HFOsc
3
OUT
JP72
GND
OUT
GND
Hi n
2
4
VCC
OE
1
2
1
H_Sig1
L _Sig1
C77
100 nF, 25 V
5V
U70
SG-8002CE-PHB- 6.780 MHz
Vamp
.1" Male Vert.
1
2
1
R70
47 K
VAMP
5V
External Oscillator
A5 V
A5 V
5V
J70
OSC
5V
Oscillator Select
EPC9511ZVSCD_Rev1_0.SchDoc
Icoil
4
D72
40 V 30 mA
SDM03U40-7
U77
NC7SZ157L 6X
2
A4WPmode 6
VCC
Coil Current Sense
1
5
1
2
C73
22 pF, 50 V
EMPTY
Nclr
Pre-Regulator
5V
R73
10 K
R21
51 ohm 1/2 W
Vo ff
C72
100 nF, 25 V
OSC
2
180 Ω
5V
Logic Supply Regulator
OSC
1
Y
R2 6
22 K 1%
2
3
B
1
L _Sig1
4
C92
1 μF, 25 V
Vamp
3
OSC
C91
1 μF, 25 V
R72
Vamp
P25
10 K
EMPTY
EMPTY
2
A
GND
1K
EMPTY
R25
4.3 K 1%
C22
1 nF, 50 V
Vout
6
Nclr
L 90
47 μH 250 mA
D90
40 V 1 A
PD3S140-7
2
R92
9.53 K 1%
U72
NC 7SZ08L 6X
5V
Current Adjust
C21
680 pF, 50 V
1
C95
22 nF, 25 V
6
GND
2
1
FB
DRV
Vout
Vin
Nclr
Reg
CNTL
V off
3
EN
0.81V
Icoil
P72
GND
2
R91
49.9 K 1%
Deadtime Fall
5V
BAT54KFILM
1
1
1
OSC
4
Vin
Vamp
Pre-Regulator Disconnect
2
2
5V
5V
Icoil
PreRegulator
EPC9511PR_R1_0.SchDoc
M ode
A4WPmode
5V
Vout
D21
SDM0 3U40-7
40 V 30 mA
Reverse Polarity Protection
2
Main Supply
19 V 1 Amax
D71
40 V 30 mA
SDM0 3U40-7
D95
IN
H_Sig1
2
430 Ω
C71
100 nF, 25 V
JP1
.1" Male Vert.
1
1
B
5
1
U90
MP 2357DJ-L F
R90
100 K 1%
R71
D20
25 V, 11 A
SMAJ22A
Vin
1
2
5V
C90
1 μF, 25 V
Vin
1K
EMPTY
Jumper 100
2
A
OSC
Vin
U71
NC 7SZ00L 6X
JP10
J1
.156" Male Vert.
P71
QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2016 |
Nclr
Vin
Deadtime Rise
5V
| 10
5V
5V
1
R4
4 Ω7
2
5VHS
C2
100 nF, 25 V
C4
100 nF, 25 V
Gbtst
QUICK START GUIDE
11 |
Q1B
EPC2107
D4
CD0603-Z5V1
OUT
D3
SDM03U40-7
40 V 30 mA
1
4.7 V
Synchronous Bootstrap Power Supply
C3
22n F, 25 V
R3
27 K
2
C5
100 nF, 25 V
Vamp
Vamp
1
VAMP
C12
10 nF, 100 V
2
C11
10 nF, 100 V
GL
Vamp
C15
2.2 μF 100 V
5 VHS
Vamp
GU
GU
Out
Hin
Hin
4.7 V
C6
22 pF, 50 V
Lin
GL
GL
Lin
C7
22 pF, 50 V
U1
L M5113T M
Q1A
E PC2107
100 V 220 mΩ with SB
GU
D1
BAT54KFILM
5V
PH1
Out
1
ProbeHole
GL
C1
1 μF, 10 V
Gate Driver
GP1
GND
1
.1" Male Vert.
Figure 10: EPC9511 - Gate driver and power devices schematic
Ground Post
GND
OUT
Development Board EPC9511
| EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2016
D2
SDM03U40-7
R2
20 Ω
D47
1
SDM0 3U40-7
40 V 30 mA
2
FA/SD
7
FA/SD
Comp
2
Comp
Output Voltage Limit
D40
2
1
2
UVLO
U50
L M3478MAX/NOPB
1.26 V
C52
100 pF
Vfdbk
3
FB
DR
C51
100 nF, 25 V
Isns
1
2
1
1 R82
20E
PreDR
2
5 VGD
1
Isns
2
PWM
VDD
C81
100 nF, 25 V
Isns
VREF
LDO
3
U80
UCC27611DRV
C82
22pF, 50V
Isns
Pgnd
VSS
6
5 VGD
5
4
GLPH
GLPL
D60
MBRS1100T 3G
100 V 1 A
L 60
100 μH 2.2 A
Vsepic
C63
10 μF 35 V
Vin
EP Isns
GLPH 1
R80
2 Ω2
SW
1
ProbeHole
Q60
EPC2036
100 V 65 mΩ
2 GLPL
Gate Driver
Isns
Q61
EPC2007C
100 V 6 A 30 mΩ
EMPTY
GLPL
Vfdbk
SDM0 3U40-7
40 V 30 mA
R44
100 K 1%
Latch
4
Pmon
1
Pled
Q
CMPout
2
DC Power Monitor
5V
5V
1
5V
Figure 11: EPC9511 - Pre-regulator schematic
1
4
R135
11.3 K
5
1 R224
330 K
R223
6.8 K 1%
2
R133
6.81 K 1%
C133
1 nF, 50 V
EMPTY
2
UVLO
U220
T LV3201AIDBVR
C221
1nF, 50 V
CD0603-Z3V9
1 R134
470 K
1
Q135
EPC2038
100 V 2.8 Ω
Mode
Voltage Switch Threshold Latch
3
U130
T LV3201AIDBVR
C131
1 nF, 50 V
2
C210
100 nF, 25 V
R221
6.04 K
5V
C220
100 nF, 16 V
5V
R222
18 K 1%
2
R131
6.04 K
Nclr
C135
1 nF, 50 V
Voltage Switch Threshold Detect
2
1
Vdown
5
D221
1
4
1
3
R220
71.5 K
5V
3
5V
C223
1 nF, 50 V
EMPTY
2
CLR
U210
NC7SZ74L 8X
Q
Vin
Voltage Mode
5V
2
VCC
Q
CLK
GND
2
D
2
2
CD 0603-Z3V9
R201
4.53 K 1%
Vo ff 7
PR
1
2
R203
261 K
6
2
D203
Clear
U200
T LV3201AIDBVR
1
1
1
4
1
5V
5V
Under-Voltage Lock-Out
Set to 17.3 - 18.3 V
2
Development Board EPC9511
1 Vre f
R130
261 K
1 R36
2 5V
634 Ω
C130
100 nF, 25 V
R132
18 K 1%
Vout
8
Voff
3
5V
4
2
5
5V
D37
2
634 Ω
6
2
1
1
R20
18 K 1%
2
R202
261 K
C200
100 nF, 25 V
R35
1
D36
5V
5V
5V
Vamp
R38
49.9 K 1%
Current Mode
GND
2 Pcmp
150 K 1%
D35
Iled
Lo
Hi
R37
1
Power Mode
CLR LE
UVLC
9
C44
22 pF, 50 V
2
1
10
Pmon
CMPout
1
Icoil
GND
D
1.24 V
Ground Post
2
75 K
5
CMP+
R33
1
Imon
2
3
5
1
V-
C32
47 nF, 25 V
Imon
2
V+
7
1
1
D42
I-
I+
GP60
.1" Male Vert.
R60
80 mΩ 0.4 W
1
8
Vout
Vout
C65
2.2 μF, 100 V
U30
LT2940IMS#PBF
2
Pcmp
Vo ut
2
C31
22 pF, 50 V
2
1
R32
8.2 K 1%
Output Current Limit
R6 1
2
1
2
V+
1
2
C43
10 nF, 50 V
VCC
R31
71 K5 1%
SDM0 3U40-7
40 V 30 mA
R43
15.4 K
11
Vout
D41
2
1
Pmon 1 R4 2
36.5k
12
Output Power Limit
1
220 mΩ 0.333 W
1 R3 0
2
100 Ω
C30
100nF, 100V
1
Vsepic
Vsepic
2
C46
1 nF, 50 V
C64
2.2 μF 100 V
PH60
2
4
Agnd
C53
10 nF, 50 V
R46
11.3 K
Mode
6
Isens
1
Q46
EPC2038
100 V 2.8 Ω
Cnt
R54
0Ω
5 VGD
5 VGD
C80
1μF, 10 V
Isns
2
R45
1.5 K
EMPTY
R53
1.00 K
SDM0 3U40-7
R41 40 V 30 mA
6.04k
L 80
10 μH 150 mA
5V
5
1
C45
10 nF, 100 V
EMPTY
2
Vom
261k
1
1
Vout
C50
100 nF, 100 V
Vin
Osc
C62
4.7μF 50 V
2
2
R52
71.5 K 1%
1 R5 0
10 Ω
1
Vin
4
PreRegulator Disable
Mode Switch protection
Vin
C61
4.7μF 50 V
1
2
3
2
R48
15.4k
SDM0 3U40-7
40 V 30 mA
R40
Vin
Vin
8
D49
UVLO
R51
124 K 1%
JP50
.1” Male Vert.
2
1
SDM0 3U40-7
40 V 30 mA
5V
2
6.04k
1
R49
1
QUICK START GUIDE
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D48
Voff
| 12
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Demonstration Board Notification
The EPC9511 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.
