EPC9509 Quick Start Guide Datasheet by EPC

EFFICIENT POWER CONVERSION l
Demonstration System
EPC9509
Quick Start Guide
EPC2108 and EPC2036
6.78 MHz, ZVS Class-D Wireless Power Amplifier
QUICK START GUIDE Demonstration System EPC9509
2 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
DESCRIPTION
The EPC9509 is a high efficiency, Zero Voltage Switching (ZVS), class-D
wireless power amplifier demonstration board that operates at 6.78 MHz
(Lowest ISM band). The purpose of this demonstration system is to sim-
plify the evaluation process of wireless power amplifier 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 enhancement-mode, half-bridge field
effect transistor (FET), the 60 V rated EPC2108 eGaN FET with integrated
synchronous bootstrap FET. The amplifier can be set to operate in either
differential 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.
For more information on the EPC2108 eGaN FETs please refer to the data-
sheet available from EPC at www.epc-co.com. The datasheet should be
read in conjunction with this quick start guide.
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
VsgnDiff
Differential or Single-Select
Voltage
Open Drain/
Collector -0.3 5.5 V
IsgnDiff
Differential or Single-Select
Current
Open Drain/
Collector -1 1 mA
EPC9509 amplifier board photo
DETAILED DESCRIPTION
The Amplifier Board (EPC9509)
Figure 1 shows the system block diagram of the EPC9509 ZVS class-D
amplifier with pre-regulator and figure 2 shows the details of the ZVS
class-D amplifier section. The pre-regulator is used to control the ZVS
class-D wireless power amplifier based on three feedback parameters
1) the magnitude of the coil current indicated by the green LED, 2) the
DC power drawn by the amplifier indicated by the yellow LED and 3)
a maximum supply voltage to the amplifier indicated by the red LED.
Only one parameter at any time is used to control the pre-regulator
with the highest priority being the maximum voltage supplied to the
amplifier followed by the power delivered to the amplifier and lastly the
magnitude of the coil current. The maximum amplifier supply voltage
is pre-set to 52 V and the maximum power drawn by the amplifier 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 amplifier supply after removing jumper JP1 at
location JP1 and connecting the main positive supply to the bottom pin.
JP1 can also be removed and replaced with a DC ammeter to directly
measure the current drawn by the amplifier. When doing this observe
a low impedance connection to ensure continued stable operation of
the controller. Together with the Kelvin voltage probes (TP1 and TP2)
connected to the amplifier supply, an accurate measurement of the
power drawn by the amplifier can be made. The EPC9509 is also provided
with a miniature high efficiency switch-mode 5 V supply to power the logic
circuits on board such as the gate drivers and oscillator.
The amplifier comes with its own low supply current oscillator that is
pre-programmed to 6.78 MHz ± 678 Hz. It can be disabled by placing
a jumper into JP70 or can be externally shutdown using an externally
controlled open collector / drain transistor on the terminals of JP70 (note
which is the ground connection). The switch needs to be capable of
sinking at least 25 mA. An external oscillator can be used instead of the internal
oscillator when connected to J70 (note which is the ground connection)
and the jumper (JP71) is removed.
* Maximum current depends on die temperature – actual maximum current will be subject to switching
frequency, bus voltage and thermals.
The prerregulator can also be disabled in a similar manner as the oscillator using JPSO. However, note that this connection is floating with respect to the 9 s k T each i and r f T operation a the 9 n r a the | k T 7 p reach k S T e amplifier e r of t be 5 c m power. T to 5 (1 fl external k F i szn c Z S to a be d P a P d both 5 i i T when f m 'l supply (H to JPl (bottom pin — for bypass mode) with ground connected
QUICK START GUIDE Demonstration System EPC9509
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 3
The pre-regulator can also be disabled in a similar manner as the oscillator
using JP50. However, note that this connection is floating with respect to the
ground so removing the jumper for external connection requires a floating
switch to correctly control this function. Refer to the datasheet of the con-
troller IC and the schematic in this QSG for specific details.
The ZVS timing adjust circuits for the ZVS class D amplifiers are each
independently settable to ensure highest possible efficiency setting and
includes separate ZVS tank circuits. This allows OOK modulation capability
for the amplifier.
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 illumi-
nate. Finally, when the pre-regulator reaches maximum output voltage the
red LED will illuminate indicating that the system is no longer A4WP compli-
ant as the load impedance is too high for the amplifier to drive. When the
load impedance is too high to reach power limit or voltage limit mode, then
the current limit LED will illuminate incorrectly indicating current limit mode.
This mode also falls outside the A4WP standard and by measuring the am-
plifier supply voltage across TP1 and TP2 will show that it has nearly reach
the maximum value limit.
Single ended or Differential Mode operation
The EPC9509 amplifier can be operated in one of two modes; single-
ended or differential mode. Single ended operation offers higher amplifier
efficiency but reduced imaginary impedance drive capability. If the
reflected impedance of the tuned coil load exceeds the capability of
the amplifier to deliver the desired power, then the amplifier can be
switched over to differential mode. In differential mode, the amplifier 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 differential mode and can be switched to
single ended mode by inserting a jumper into J75. When inserted the ampli-
fier operates in the single-ended mode. Using an external pull down with
floating collector/ drain connection will have the same effect. The external
transistor must be capable of sinking 25 mA and withstand at least 6 V.
For differential 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 efficiency with the EPC9509 amplifier. 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 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 5 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 EPC9509 amplifier into Bypass mode. Connect the main input power
supply (+) to JP1 (bottom pin – for bypass mode) with ground connected
to J1 ground (-) connection.
2. With power off, connect the control input power supply bus (19 V) to (+)
connector (J1). Note the polarity of the supply connector.
3. Connect a LOW capacitance oscilloscope probe to the probe-hole of
the half-bridge to be set and lean against the ground post as shown in
Figure 4.
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 re-
quired predominant operating value (such as 24 V but NEVER exceed the
absolute maximum voltage of 52 V).
6. While observing the oscilloscope adjust the applicable potentiometers to
so achieve the green waveform of figure 5.
7. Repeat for the other half-bridge.
8. Replace the potentiometers with fixed value resistors if required. Remove
the jumper from JP50 and install it back into JP1 to revert the EPC9509
back to pre-regulator mode.
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 capacitors CZVS1 and CZVS2 are chosen to have a
very small ripple voltage component and are 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:
(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 amplifier supply voltage VAMP 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 off
of the devices (which will increase device losses). Typical voltage
transition times range from 2ns through 12ns. For the
differential case the voltage and charge (COSSQ) are doubled when
calculating the ZVS inductance.
LZVS = ∆tvt
8 ∙ fsw∙ (COSSQ + Cwell)
COSSQ =
VAMP
∙
∫
0
VAMP
COSS (v) ∙ dv
1
7M1?“
QUICK START GUIDE Demonstration System EPC9509
4 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
QUICK START PROCEDURE
The EPC9509 amplifier board is easy to set up and evaluate the
performance of the eGaN FET in a wireless power transfer application.
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 amplifier in this
mode and will limit the coil current, power delivered or maximum
supply voltage to the amplifier based on the pre-determined settings.
The main 19 V supply must be capable of delivering 2 ADC. DO NOT
turn up the voltage of this supply when instructed to power up the
board, instead simply turn on the supply. The 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 electri-
cal connections and make sure jumper JP1 is installed. Also make sure
the source coil and device coil with load are connected.
2. With power off, connect the main input power supply bus to J1 as
shown in figure 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 confirmed, observe the output voltage,
efficiency and other parameters on both the amplifier and device
boards.
6. For shutdown, please follow steps in the reverse order.
b. Operation bypassing the pre-regulator
In this mode, the pre-regulator is bypassed and the main power is
connected directly to the amplifier. This allows the amplifier to be
operated using an external regulator. In this mode there is no protection
for ensuring the correct operating conditions for the eGaN FETs.
When in bypass mode it is crucial to slowly turn up the supply voltage
starting at 0 V. Note that in bypass mode you will be using two supplies;
one for logic and the other for the amplifier power.
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
EPC9509 in bypass mode. Also make sure the source coil and device
coil with load are connected.
2. With power off, connect the main input power supply bus +VIN to the
bottom pin of JP1 and the ground to the ground connection of J1 as
shown in figure 3.
Figure 1: Block diagram of the EPC9509 wireless power amplifier
X
IAMP P
AMP
VAMP
Icoil
|Icoil |
19 V
SEPIC
pre-regulator ZVS class D
amplifier
Control reference signal
Combiner
DC
C
Coil
S
4 V –
DC
52 VDC
3. With power off, connect the control input power supply bus to J1.
Note the polarity of the supply connector. This is used to power the
gate drivers and logic circuits.
4. Make sure all instrumentation is connected to the system.
5. Turn on the control supply – make sure the supply is 19 V range.
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 confirmed, adjust the main supply voltage
within the operating range and observe the output voltage, efficiency
and other parameters on both the amplifier and device boards.
8. For shutdown, please follow steps in the reverse order. Start by reducing
the main supply voltage to 0 V followed by steps 6 through 2.
NOTE.
1. When measuring the high frequency content switch-node (Source Coil Voltage), care
must be taken to avoid long ground leads. An oscilloscope probe connection (preferred
method) has been built into the board to simplify the measurement of the Source Coil
voltage (shown in Figure 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. AVOID using a Lab Benchtop programmable DC as the load for the device board. These
loads have low control bandwidth and will cause the EPC9509 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.
Dlfible Drefleu zvs Class D I . EPCSSOQ 555.9- m. u DsclllaxwaDisablsa‘lnul , ”(‘3 cm: 2615 w: - :‘r- 3‘: .7 ~ eean
QUICK START GUIDE Demonstration System EPC9509
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 5
Figure 2: Diagram of EPC9509 amplifier circuit
Figure 3: Proper connection and measurement setup for the amplifier board
+
V
AMP
Q
1_a
L
ZVS12
Q
2_a
Q
1_b
Q
2_b
L
ZVS2
C
ZVS2
C
ZVS1
L
ZVS1
Coil
connection
Single
ended
operation
jumper
Pre-
regulator
Pre-regulator
jumper
JP1
J1
V
IN
Bypass mode
connection
V
External
oscillator
Ground post Switch-node secondary
oscilloscope probe
Disable
oscillator
jumper
Source coil
connection
Switch-node main
oscilloscope probe
Ground post
Coil current setting
Operating mode LED
indicators
Amplifier voltage
source jumper
Pre-regulator jumper bypass connection
Amplifier
supply voltage
(0 V – 52 Vmax )
Disable pre-regulator
jumper
OOK modulation input
9-24 VDC
VIN supply
(note polarity)
Amplifier timing
setting (not installed)
Single ended/ differential
mode operation selector
+
Ground post
Switch-node
pre-regulator
oscilloscope probe
Internal oscillator
selection jumper
Amplifier board – front-side
was made. ‘ In cmm Differs-mink ‘éupeq m. F Dsdll may: :
QUICK START GUIDE Demonstration System EPC9509
6 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Figure 4: Proper measurement of the switch nodes using the hole and ground post
Figure 5: ZVS timing diagrams
Switch-node
measurement
points
Shoot-
through
Q2 turn-on
Q1 turn-off
VAMP
0
time
ZVS
Partial
ZVS
ZVS + diode
conduction
Shoot-
through
Q1 turn-on
Q2 turn-off
VAMP
0 time
ZVS
Partial
ZVS
ZVS + diode
conduction
QUICK START GUIDE Demonstration System EPC9509
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 7
Pre-Cautions
The EPC9509 demonstration system has a limited controller and no
enhanced protection systems and therefore should be operated with
caution. Some specific precautions are:
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.
2. There is no heat-sink on the devices and during experimental
evaluation it is possible present conditions to the amplifier that may
cause the devices to overheat. Always check operating conditions and
monitor the temperature of the EPC devices using an IR camera.
3. Never connect the EPC9509 amplifier board into your VNA in an
attempt to measure the output impedance of the amplifier. Doing so
will severely damage the VNA.
THERMAL CONSIDERATIONS
The EPC9509 demonstration system showcases the EPC2108 and
EPC2036 eGaN FETs in a wireless energy transfer application. Although
the electrical performance surpasses that of traditional silicon devices,
their relatively smaller size does magnify the thermal management
requirements. The operator must observe the temperature of the gate
driver and eGaN FETs to ensure that both are operating within the thermal
limits as per the datasheets.
NOTE. The EPC9509 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.
Table 2: Bill of Materials - Amplifier 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
(continued on next page)
QUICK START GUIDE Demonstration System EPC9509
8 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Table 2: Bill of Materials - Amplifier Board (continued)
Item Qty Reference Part Description Manufacturer Part #
40 1 Lzvs12 DNP CoilCraft TBD
41 5 P25, P71, P72, P77, P78 10 k, DNP (1 k) 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 27 k Panasonic ERJ-2GEJ273X
47 2 R4_a, R4_b 4.7 Ω Panasonic ERJ-2GEJ4R7X
48 1 R20 DNP (10 k) Panasonic ERJ-2GEJ103X
49 1 R21 100 k Panasonic ERJ-2GEJ104X
50 1 R25 7.5 k Panasonic ERJ-2RKF7501X
51 1 R26 2 k Panasonic ERJ-2RKF2001X
52 1 R30 100 Ω Panasonic ERJ-3EKF1000V
53 1 R31 51.0 k 1% Panasonic ERJ-3EKF5102V
54 1 R32 8.2 k 1% Panasonic ERJ-2RKF8201X
55 2 R33, R70 47 k Panasonic ERJ-2RKF4702X
56 2 R35, R36 634 Ω Panasonic ERJ-2RKF6340X
57 1 R37 150 k 1% Panasonic ERJ-2RKF1503X
58 2 R38, R91 49.9 k 1% Panasonic ERJ-2RKF4992X
59 1 R40 196 k Panasonic ERJ-3EKF1963V
60 1 R41 6.04 k Panasonic ERJ-2RKF6041X
61 1 R42 24.9 k Panasonic ERJ-2RKF2492X
62 1 R43 10.5 k Panasonic ERJ-2RKF1052X
63 2 R44, R90 100 k 1% Panasonic ERJ-2RKF1003X
64 1 R50 10 Ω Panasonic ERJ-3EKF10R0V
65 1 R51 124 k 1% Panasonic ERJ-2RKF1243X
66 1 R52 71.5 k 1% Panasonic ERJ-2RKF7152X
67 1 R53 1.00 k
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 10 k
Panasonic ERJ-2GEJ103X
74 1 R80 2.2 Ω
Yageo RC0402JR-072R2L
75 1 R92 9.53 k 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 National Semiconductor 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
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.
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 efficiency by changing Lzvs1 and Lzvs2 from 390nH (Coilcraft 2929SQ-391JEB) to 500nH (Coilcraft 2929SQ-501JEB).
QUICK START GUIDE Demonstration System EPC9509
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 9
Figure 6: EPC9509 - ZVS class-D amplifier schematic
19 V, 1.5 Amax
Vin5 V
VoutGND
Icoil
PreRegulator
EPC9509PR_R2_0.SchDoc
Vin5 V
Vout
Pre-Regulator
SDM03U40
40 V, 30 mA
D71
5 V
5 V
5 V
Deadtime A Fall
Deadtime A Rise
1k
P71EMPTY
A
B
U71
NC7SZ00L6X
A
B
Y
U72
NC7SZ08L6X
5 V
DSO221SHF 6.780
42
GND
OUT3
OE
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
1k
P72EMPTY
22 Ω
1 2
R72
SDM03U40
40 V, 30 mA
D77
1 k
P77EMPTY
SDM03U40
40 V, 30 mA
D78
1 k
P78EMPTY
OSC
H_Sig1
L_S ig1
H_Sig2
L_S ig2
OSC
.1" Male Vert.
1
2
JP71
.1" Male Vert.
1
2
J75
Single / Differential Mode
nSD
nSD
nSD
5 V
10 k
12
R75
OutA
OutB
ZVS Tank Circuit
1
2
.156" Male Vert.
J1
Vin
Main Supply
VampVout
SMA Board Edge
J2
DNP
JMP 1
Single Ended Operation Only
Pre-Regulator Disconnect
SMD probe loop
1
TP 1
SMD probe loop
1
TP 2
Vamp
VAMP
5 V
GN D
Lin
OUTHin
a
EPC9509_SE_ZVSclassD_Rev2_0.SchDoc
390 nH
Lzvs1
390 nH
Lzvs2
TBD
Lzvs12
1μF, 50 V
Czvs2
Vamp
VAMP
5 V
GND
Lin
OUTHin
b
EPC9509_SE_ZVSclassD_Rev2_0.SchDoc
Vamp
H_Sig1
L_Sig1
H_Sig2
L_Sig2
5 V
5 V
Jumper 100
JP10
Coil Current Sense
SDM03U40
40 V, 30 mA
D21
Icoil
Icoil
124 Ω
1 2
R71
124 Ω
1 2
R78
10 k
12
R73
47 k
1
2
R70
100nF, 16 V
C77
100 nF, 16 V
C78
100 nF, 16 V
C72
100nF, 16 V
C71
22 pF, 50 V
C75
22 pF, 50 V
C73
EMPTY
1 μF, 25 V
C90
1uF, 25 V
C92
1 μF, 50 V
Czvs1
100 nF, 16 V
C70
Jumper 100
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
9.53 k, 1%
12
R92
49.9 k, 1%
12
R91
5 V
22 nF, 25 V
C95
47 μH, 250 mA
L90
100 k, 1%
12
R90
Vin
D95
BAT54KFILM
PD3S140-7
40 V, 1 A
D90
1uF, 25 V
C91
6.81 k, 1%
1
2
R26
22 Ω
1 2
R77
4.3 k, 1%
12
R25
10 k
P25
EMPTY
EMPTY
Current Set/Adjust
Vin
Reverse Polarity Protection
1
2
10 μH 1:1 96.9%
3
4
Tsns1
EMPTY
82 nH
Lsns
EMPTY
EMPTY
51 Ω 1/2 W
1 2
R21
680 pF, 50 V
C21
SDM03U40
40 V, 30 mA
D76
nSDOOKM
OOKM
OOKM
.1" Male Vert.
1
2
J76
OOK Modulation
5 V
10 k
12
R76
22 pF , 50 V
C76
OOKM
25V, 11A
D1
SMAJ22A
1
3
1:20 Current Xrmr
4
6
Tsns2
CST7030-020LB
1 nF, 50 V
C22
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 efficiency by changing Lzvs1 and Lzvs2 from 390nH (Coilcraft
2929SQ-391JEB) to 500nH (Coilcraft 2929SQ-501JEB).
QUICK START GUIDE Demonstration System EPC9509
10 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017
Figure 7: EPC9509 - Gate driver and power devices schematic
This schematic is repeated for each single-ended ZVS class D amplifier.
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
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
EPC2108
Q1B
EPC2108
4.7 Ω
1 2
R4
100 nF, 16 V
C2
100 nF, 16 V
C4
100 nF, 16 V
C5
C6
22 pF, 50 V
22 p
F, 50 V
C7
QUICK START GUIDE Demonstration System EPC9509
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 11
Figure 8: EPC9509 - Pre-regulator schematic
100 k, 1%
12
R44
Vin
Isns
4.7 k
1 2
R53
100 pF
C52
.1" Male Vert.
1
2
JP50
PreRegulator Disable
FA/SD
Vout
Vin
Vsepic
5 V 5 VGD
5 VGD
GLPH
GLPL
Gate Driver
2.2 Ω
1 2
R80
GLPLGLPH
1 2
40 mΩ, 0.4 W
R60
SW
VinVin
5 V
Vout
GND
PreDR PWM
71.5 k 1%
12
R52
124 k 1%
12
R51
5 V
10 nF, 50 V
C53
Ground Post
C62C61
2.2 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
LM3478MAX/NOPB
0 Ω
1 2
R54
100 V, 1 A
D60
MBRS1100T3G
Vfd bk Vin
Isns
2.2 μF, 100 V
C63
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
LatchHi
Lo
CMPout
CMPout
Pmon
Imon
CMP+
U30
LT2940IMS#PBF
1 2
150 mΩ, 0.25 W
R61
6
2
3EP
4
5
LDO VREF
VSS
1VDD
U80
UCC27611DRV
47 k
1 2
R33
D36
D35
Current Mode
Power Mode
Pmon
Imon
Vsepic Vout
634 Ω
1 2
R35 5 V
8.2 k, 1%
1
2
R32
45.3 k, 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
SDM03U40
40 V, 30 mA
D41
23.2 k
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
10 Ω
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
22 pF, 50 V
C32
22pF, 50 V
C31
5 VGD
5 VGD
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
EMPTY
GLPL
Pcmp
49.9 k, 1%
1
2
R38
6.04 k
1
2
R41
10.5 k
1
2
R43
150 k, 1%
12
R37
196 k
1 2
R40
22nF, 25 V
C51
SDM03U40
40 V, 30 mA
D42
4
3
1
52
U130
TLV3201AIDBVR
100 nF, 16 V
C130
D37
634 Ω
1 2
R36
5 V
5 V
Voltage Mode
Vom
Pled
Iled
Vout 18 k, 1%
1
2
R132
5 V
6.04 k
1
R131
196 k
12
R130
1 nF, 50 V
C131
5 V
4
3
1
52
U220
TLV3201AIDBVR
100 nF, 16 V
C220
5 V
5 V
18 k, 1%
1
2
R222
5 V
5.76 k
12
R221
71.5 k
12
R220
1nF, 50 V
C221
SDM03U40-7
40 V, 30 mA
D47
6.04 k
1 2
R49
15.4 k
1
2
R48
Vin
UVLO
UVLO
UVLO Limit
D221
4.7 μF, 50 V 4.7 μF, 50 V
EFFIEIENT POWER (ONVERSION l
Demonstration Board Notification
The EPC9509 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.
EPC Products are distributed through Digi-Key.
www.digikey.com
For More Information:
Please contact info@epc-co.com
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