EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 EPC Products are distributed through Digi-Key. www.digikey.com For More Information: Please contact [email protected] 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 DESCRIPTION The EPC9115 demonstration board is a fully regulated 300 kHz isolated DC/DC bus converter with a 12 V, 42 A output and a input range of 48 – 60 V. The demonstration board features the enhancement mode (eGaN®) field effect transistors (FETs), the EPC2020 (60 V) and EPC2021 (80 V), along with eGaN FET specific integrated circuit drivers – the LM5113 half-bridge driver and UCC27611 low side driver from Texas Instruments. The power stage is a conventional hard-switched 300 kHz isolated buck converter. The EPC9115 board is intended to showcase the superior performance that can be achieved using eGaN FETs and eGaN driver together in a conventional topology. The complete converter fits within a standard eighth-brick envelope, but the demonstration board is oversized to allow connections for bench evaluation. There are also various probe points to facilitate simple waveform measurement and efficiency calculation. A complete block diagram of the circuit is given in Figure 1. The converter uses a full-bridge (FB) primary power stage, a 4:1 transformer, and a center-tapped (CT) output stage with active reset snubbers. Control is provided by a Microchip dsPIC® controller, and basic voltage mode control is implemented. For more information on the EPC2020 and EPC2021 eGaN FETs, as well as the gate drivers and controller, please refer to the datasheets available from EPC at www.epc-co.com, www.ti.com, and www.microchip.com. These datasheets, should be read in conjunction with this quick start guide. Demonstration Board EPC9115 Quick Start Guide 1/8th Brick Converter Featuring EPC2020 and EPC2021 Demonstration Board Notification EPC9115 boards are intended for product evaluation purposes only and are not intended for commercial use. As evaluation tools, they are 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. Table 1: Performance Summary (V IN =52 V, T A = 25°C, 400 LFM unless otherwise specified) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V IN Bus Input Voltage Range 48 52 60 V V OUT Output Voltage 11.4 1 12 12.1 V I OUT Output Current 2 Ta = 25°C, no forced air cooling 3 5 A Ta = 25°C, ~200 LFM 35 A Ta = 25°C, ~400 LFM 42 A f SW Switching Frequency 300 kHz Output Ripple Frequency 600 kHz Peak Efficiency 48 V IN , 30 A I OUT 96.7 % Full Load Efficiency 52 V IN , 42 A I OUT 96.4 % Full Load Efficiency 56 V IN , 42 A I OUT 96.3 % Full Load Efficiency 60 V IN , 42 A I OUT 96.1 % 1 Output voltage duty cycle limited to 98% 2 Maximum current limited by thermal considerations 3 Board placed vertical on long edge to aid convection – Do NOT operate horizontally without forced air cooling
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EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015
EPC Products are distributed through Digi-Key.www.digikey.com
For More Information:
Please contact [email protected] your local sales representative
Visit our website: www.epc-co.com
Sign-up to receive EPC updates atbit.ly/EPCupdates or text “EPC” to 22828
DESCRIPTION
The EPC9115 demonstration board is a fully regulated 300 kHz isolated DC/DC bus converter with a 12 V, 42 A output and a input range of 48 – 60 V. The demonstration board features the enhancement mode (eGaN®) field effect transistors (FETs), the EPC2020 (60 V) and EPC2021 (80 V), along with eGaN FET specific integrated circuit drivers – the LM5113 half-bridge driver and UCC27611 low side driver from Texas Instruments. The power stage is a conventional hard-switched 300 kHz isolated buck converter. The EPC9115 board is intended to showcase the superior performance that can be achieved using eGaN FETs and eGaN driver together in a conventional topology.
The complete converter fits within a standard eighth-brick envelope, but the demonstration board is oversized to allow connections for bench evaluation. There are also various probe points to facilitate simple waveform measurement and efficiency calculation.
A complete block diagram of the circuit is given in Figure 1. The converter uses a full-bridge (FB) primary power stage, a 4:1 transformer, and a center-tapped (CT) output stage with active reset snubbers. Control is provided by a Microchip dsPIC® controller, and basic voltage mode control is implemented. For more information on the EPC2020 and EPC2021 eGaN FETs, as well as the gate drivers and controller, please refer to the datasheets available from EPC at www.epc-co.com, www.ti.com, and www.microchip.com. These datasheets, should be read in conjunction with this quick start guide.
Demonstration Board EPC9115Quick Start Guide
1/8th Brick ConverterFeaturing EPC2020 and EPC2021
Demonstration Board NotificationEPC9115 boards are intended for product evaluation purposes only and are not intended for commercial use. As evaluation tools, they are 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.
Table 1: Performance Summary (VIN=52 V, TA = 25°C, 400 LFM unless otherwise specified)SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Bus Input Voltage Range 48 52 60 V
VOUT Output Voltage 11.41 12 12.1 V
IOUT Output Current2 Ta = 25°C, no forced air cooling3 5 A
Ta = 25°C, ~200 LFM 35 A
Ta = 25°C, ~400 LFM 42 A
fSW Switching Frequency 300 kHz
Output Ripple Frequency 600 kHz
Peak Efficiency 48 VIN, 30 A IOUT 96.7 %
Full Load Efficiency 52 VIN, 42 A IOUT 96.4 %
Full Load Efficiency 56 VIN, 42 A IOUT 96.3 %
Full Load Efficiency 60 VIN, 42 A IOUT 96.1 %1 Output voltage duty cycle limited to 98%2 Maximum current limited by thermal considerations3 Board placed vertical on long edge to aid convection – Do NOT operate horizontally without forced air cooling
QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 2
EPC9115
QUICK START PROCEDURE
Figure 1: Block Diagram of EPC9115 Demonstration Board
Demonstration board EPC9115 is easy to set up to evaluate the performance of the EPC2020 and EPC2021 eGaN FETs and LM5113 and UCC27611 drivers. Refer to Figure 2 for proper connect and measurement setup and follow the procedure below:
1. With power off, connect the input power supply bus betweenVIN+ and VIN- euro connectors as shown.
2. Add input and output voltage measurements to the Kelvinconnections provided as shown.
3. With power off, connect the load as desired between VOUT+ and VOUT- euro connectors as shown. A resistive or constant current load isrecommended.
4. Turn on the supply voltage to the required value. Do not exceed theabsolute maximum voltage of 60 V on VIN.
5. Measure the output voltage to make sure the board is fully functionaland operating no-load.
6. Turn on active load and adjust to the desired load current while stayingbelow the maximum current (This will depend on the cooling provided. If no forced air cooling, then keep the load current below 5 A).
7. If testing under moderate to full load conditions, ensure that a fanor other source of forced convection is producing adequate airflow (≥ 400 LFM recommended for full load operation).
8. Once operational, adjust the bus voltage and load current within theallowed operating range and observe the output switching behavior, efficiency and other parameters.
9. For shutdown, please follow steps in reverse.NOTE. For accurate high frequency content switch node and gate voltage waveforms, use a short ground clip or purpose-made probe adapter, as shown in Fig. 3. Avoid long ground leads on oscilloscope probes. Please note that primary and secondary side grounds are not connected to each other on the EPC9115 demo board. When measuring multiple signals ensure that they are always referenced to the same ‘ground’ potential to avoid potential circuit failure or instrumentation failure.
EPC2021
Q1
EPC2021
Q2
EPC2021
Q3
EPC2021
Q4
4T
1T
EPC2020
Q5
EPC2020
Q7
Cf12*4.7 uF
Lf1 470nH
EPC2020
Q6
EPC2020
Q8
1T
R2
5.2k
C1
100n
C2
470nF
D1
D4
D5
M1
Lf2 330n
Cf112*1 uF
M2
A2Controller
A1
V_OUT+
vp+
vp-
vsa
vsb
vsct
Vsnu
b
vsa
vsb
V_OUT-
V_IN+
V_IN-
p1
p1p2
p2
s1 s2
snb1
snb2
I_O
UT_
SNS
V_O
UT_
SNS
V_BIAS_PRI
V_BIAS_SEC
p1
p2
s1s2snb1snb2
I_OUT_SNS
V_OUT_SNS
QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 3
EPC9115
CIRCUIT PERFORMANCEThe EPC9115 demonstration circuit was designed to showcase the size and performance that can readily be achieved using eGaN FETs. The 300 kHz operating frequency is 50% - 100% higher than typical commercial eighth-brick converters.
Figure 4 shows typical full-load waveforms for a 52 V input voltage using probe tip adapters as shown in Figure 3. Figure 5 shows efficiency plots for several input voltages at 400 LFM (2 m/s) airflow at 25 °C. Data are taken after converter reaches thermal steady state.
Figure 4: Typical waveforms taken at 52 VIN to 12 VOUT/42 AOUT
QUICK START PROCEDURE
Figure 3: Proper Measurement of Switch Nodes or Output Voltage
Figure 2: Proper Connection and Measurement Setup
EPC 9115, Regulated Eigth-brick Demo Board
VIN Supply<60 V Load
Secondary Waveforms
Primary Waveforms
Vds
Vds
Vgs
Vgs
VIN
−V
IN+
VIN−
VOUT−VOUT+
VO
UT−
VO
UT+VIN−
VIN+
A A
V
V
Minimize loop
Do not use probe ground lead
Vpri Switch Node10 V/div
Vsec Drain Node 5 V/div
Vpri Gate4 V/div
QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 4
EPC9115
OPERATING CONSIDERATIONS
The EPC9115 is a demonstration platform intended to show the capabilities of eGaN FETs in an eighth-brick application. The converter has basic regulation and overcurrent protection, but the complete feature set often found with 1/8th-brick converters is not implemented. In particular, the EPC9115 does not have overvoltage, over-temperature, or fast-acting short-circuit protection. Hence, the circuit is recommended for power stage and efficiency evaluation purposes. The transient response has not been optimized.
SOURCE and LOAD: It is recommended that the converter be driven from a source with both low ac and dc impedance. Additional input capacitance may be added as necessary. Additional output capacitance may be added to the output in the form of electrolytic capacitors, up to 1000 μF. Addition of bulk capacitance in the form of low ESR capacitors is not recommended.
THERMAL MANAGEMENT: The EPC9115 demo board has no on-board thermal protection. Thermal images for steady state full load operation are shown in Figure 6. The EPC9115 is intended for bench evaluation with nominal room ambient temperature and forced air cooling. Operation without forced air cooling is possible for limited power operation. It is recommended that the maximum temperature on the EPC9115 not exceed 125 °C.
ELECTRICAL PROTECTION: Overcurrent protection is set at a nominal value of 50 A at room temperature. Current sensing is implemented using inductor DCR sensing, and as a result exhibits variability as a function of the inductor and its temperature. As the inductor becomes hotter, the trip point becomes lower.
The EPC9115 demo board does not have any input overvoltage protection on board. It is also recommended to make sure that the converter is started with an output voltage of 1V or less.
Figure 5: Typical efficiency curves. Operating conditions: 400 LFM (2 m/s) forced convection, ambient temperature 27 °C, thermal steady state. The converter is running unregulated for the 48 V case.
Figure 6: Thermal images of EPC9115. Operating conditions: 400 LFM (2 m/s) forced convection, ambient temperature 27 °C, thermal steady state.
98
97
96
95
94
93
92
91
90
E�
cieny
(%)
VIN = 60VIN = 56VIN = 52VIN = 48
0 10 20 30 40 50 IOUT (A)
400 LFM
QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 5
EPC9115
Table 2: Bill of MaterialsDesignator Description Quantity Value MFG MFGPN
C1, C2, C3, C4, C10, C11 Capacitor, 2.2 µF, 6.3 V, X5R 6 2.2 µF TDK Corporation C1005X5R0J225M050BC
C12, C13, C17, C42, C43, C46, C47, C50, C55, C58 Capacitor, 22 pF, 50 V, NPO, 5% 10 22 pF Murata GRM1555C1H220JA01D
C14, C16 Capacitor, 4.7 µF, 6.3 V, X7S 2 4.7 µF TDK C1608X7S0J475K080AC
C18 Capacitor, 1000 pF, 50 V, NPO, 5% 1 1000 pF Murata GRM1555C1H102JA01D
C19 Capacitor, 0.1 µF, 50 V, X7R 1 100 nF, 50 V TDK C1005X7R1H104K050BB
C20, C21, C22, C23, C24, C25, C51, C54, C65, C67, C68, C69 Capacitor, 1 µF, 100 V, X7S 12 1 µF, 100 V TDK C2012X7S2A105M125AE
C26 Capacitor, 0.047 µF, 25 V, X7R, 5% 1 0.047 µF, 25 V Murata GRM155R71E473JA88D
C27, C28, C29, C30, C31, C32, C33, C34, C35, C36, C37, C38 Capacitor, 4.7 µF, 25 V, X7R 12 4.7 µF, 25 V TDK CGA4J1X7R1E475K125AC
C39 Capacitor. 3300 pF, 2000 V, X7R 1 3300 pF Johanson 202S43W332KV4E
C40, C41, C44, C45, C48, C49, C52, C53, C70, C71 Capacitor 10 0.22 µF Murata GRM155R71C224KA12D
C5, C59, C61, C64, C66 Capacitor 4 0.1 µF, 100 V Murata GRM188R72A104KA35D
C6, C9 Capacitor, 3.3 µF, 16 V, X5R 2 3.3 U TDK Corporation C1608X5R1C335K
C60, C62 Capacitor 2 2.2 U Samsung CL31B225KCHSNNE
C63 Capacitor 1 470 nF, 50 V TDK CGA4J3X7R1H474K125AB
C7 Capacitor, 330 pF, 25 V, NPO, 5% 1 330 pF Murata GRM1555C1E331JA01D
C8 Capacitor, 0.1 µF, 16 V, X7R 1 0.1 µF Murata GRM155R71C104KA88D
D1, D2, D3 Schottky diode 3 BAT41K ST Microelectronics BAT41KFILM
D6, D9 Schottky 60 V 1A 2 60 V, 1 A Vishay MSS1P6-M3/89A
D7 Zener Diode 1 33 V, 10 mA NXP BZX384-C33,115
J2 Programming connector 1 N/A TE Connectivity 5520425-3
J3, J5, J6, J9, J10, J13 Test point 6 N/A Keystone 5015
J4, J8 Power connector 2 N/A Molex 399100102
J7, J14, J15, J16 Connector 4 N/A Tyco 4-103185-0-02
L1 Inductor 1 180 Ω TDK MPZ1608S181ATAH0
L2 Inductor 1 0.33 µF, 20 A Abracon ASPI-7318-R33M-T
L3 470 nH, 62A inductor 1 470 nH Vishay IHLP-6767GZ-01
Q1, Q2, Q3, Q4 eGaN FET, 80 V, 60 A, 2.5 mΩ 4 EPC EPC2021
Q13, Q14 NPN/PNP DFN PBSS4160PANP 2 NXP PBSS4160PANP,115
Q16 DUAL NPN DFN PBSS4160PAN 1 NXP PBSS4160PAN,115
Q5, Q6, Q7, Q8 eGaN FET, 60 V, 60 A, 2 mΩ 4 EPC EPC2020
Q9, Q10 P-Channel DMOS FET, -60 V, 1.6 A, logic level gate 2 Vishay SQ1421EEH-T1-GE3
R1, R19, R26, R33, R40, R42, R43 Resistor 7 1R0 Yageo RC0402FR-071RL
R12, R13 Resistor, 1% 2 470 Vishay CRCW0402470RFKED
R14 Resistor, 0.1% 1 4.99 K, 0.1% Susumu RG1608P-4991-B-T5
R15, R46, R48, R51 Resistor, 0.1% 4 1 K, 0.1% Susumu RG1005P-102-B-T5
R2 Resistor 1 100 K Vishay CRCW0603100KFKEA
R20, R24, R27, R31, R34, R38, R41, R45 Resistor 8 4.7 Yageo RC0402FR-074R7L
R21, R23, R28, R30, R37, R44, R59, R60 Resistor 8 49.9 Yageo RC0402FR-0749R9L
R22, R25, R29, R32 Resistor 4 ZERO Vishay CRCW04020000Z0ED
R3, R4 Resistor 2 33.2 K Vishay RC0402FR-0733K2L
QUICK START GUIDE
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 6
EPC9115
Table 2: Bill of MaterialsDesignator Description Quantity Value MFG MFGPN
R36, R57 Resistor 2 1 Vishay CRCW08051R00FKEA
R39, R53 Resistor 2 2 Vishay CRCW08052R00FKEA
R47 Resistor 1 249 Yageo RC0402FR-07249RL
R49 Resistor, 0.1% 1 20 K, 0.1% Susumu RG1005P-203-B-T5
R5, R11, R16, R17 Resistor 4 10 K Vishay CRCW040210K0FKED
R50 Resistor, 0.1% 1 4.99 K, 0.1% Susumu RG1005P-4991-B-T5
R55, R56 Resistor 2 2.2 Yageo RC0402FR-072R2L
R6, R18 Resistor 2 15 K Yageo RC0402FR-0715KL
R7, R8 Resistor 2 4.75 K Yageo RC0402FR-074K75L
R9, R10 Resistor 2 1.8 K Yageo RC0402FR-071K8L
T1 Bias transformer 1 Custom Coils CCI-7082
U1 3.3 V linear regulator 1 3.3 V Microchip MCP1700T3302EMBCT-ND
U10, U11 eGaN Gate Driver with LDO 2 TI UCC27611DRVT
U12 Rail-to-Rail Input/Output, ±15 V, Operational Amplifier 1 TI OPA209AIDBV
U2, U4 5.0 V linear regulator 2 LP2985 5 V TI LP2985-50DBVR
U3 Power supply controller 1 On Semiconductor NCP1030DMR2G
U5 dsPIC microcontroller 1 Microchip DSPIC33FJ16GS502-E/M
U6 Dual inverter 1 NC7WZ14 Fairchild NC7WZ14EP6X
U7 2 channel unidirectional magnetic isolator 1 IL611 NVE Corporation IL611-1E
U8, U9 half-bridge eGaN gate driver 2 LM5113 TI LM5113TME/NOPB
CORE1 Planer E core 1 Ferroxcube EQ20/R-3F35
CORE2 Planer I core 1 Ferroxcube PLT20/S-3F35
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 7
QUICK START GUIDE EPC9115
Figure 7: EPC9115 Demonstration board schematic - Power
CENTER-TAPPED PLANAR XFORMER
PLANAR XFORM
1 1J3
1 1J6
11 J13
3300P
1 2
C391
2
1U, 100VC25
12
1U, 100VC24
12
1U, 100VC23
12
1U, 100VC22
12
1U, 100VC54
12
1U, 100VC69
0.33U 20A
1 2
L2
11 J9
GS1_1
GNDOUT_RET
GPURGPUL
GPLL
VIN_FILT
PRYSWR
PRYSWL
GS1_2
VIN
GS2
_2
GS2
_1
SEC _SW
GPL R
15k
1 2
R18
4.7 uF 35V4.7 uF 35V 4.7 uF 35V 4.7 uF 35V 4.7 uF 35V 4.7 uF 35V 4.7 uF 35V 4.7 uF 35V 4.7 uF 35V 4.7 uF 35V 4.7 uF 35V 4.7 uF 35VC27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38
470nH
L 3
IOUT_ SENSE
12
60V 1AD6
60V 1AD9
0.1uF, 100VC59
0.1uF, 100VC64
0.1uF, 100VC61
0.1uF, 100VC66
D7
DNP
1 2
D4
21 2R53
21 2R3 9
2E2
12
R5 6
2E2
12
R55
VCC_ SEC
V_ SNUB
OUT_ R ET
V_ SNUB_ 2
VG _SNUB1
VG _SNUB2
OUT_ R ET
OUT_ RET
V_ SNUB_ 1
GND
GND
+OUT
OUT_ R ET
1 1
2 2
J4
CON- 0399100102
11
22
J8
CON- 0399100102
80VG
D1
S1
Q180VG
D1
S1
Q2
80VG
D1
S1
Q480VG
D1
S1
Q3
60VG
D1
S1
Q560VG
D1
S1
Q6
60VG
D1
S1
Q860VG
D1
S1
Q7
11
22
33 4 45 56 67 78 8BR 1
EBDOSA
VIN
VIN
GNDOUT_ R ET
+OUT
C63
Q9SQ1421EEH
Q10SQ1421EEH
12
1U, 100VC68
12
1U, 100VC67
*
C602.2U
C622.2U
12
1U, 100VC65
*
C26
12
1U, 100VC51
12
1U, 100VC21
12
1U, 100VC20
J11 J12
PRYSW
V_ SNUB_ 2
V_ SNUB_ 1
11 2R5 7
11 2R36
J1
SEC _SW _CT
DNP
C72Cap Pol1
DNP
C73Cap Pol1
DNP
C75Cap Pol1
DNP
C74Cap Pol1
OUT_ R ET
11 J10
11 J5OUTER_METAL
.1" Male Vert.
12
J7
.1" Male Vert.
12
J14
12
J15
12
J16
470n, 50V
0.047u, 50V
AK
.1” Male Vert..1” Male Vert.
D Zener
CENTER-TAPPED PLANAR XFORMER
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 8
QUICK START GUIDE EPC9115
Figure 8: EPC9115 Demonstration board schematic – Gate Drive
6
2
1
Q16APBSS4160PAN
6
2
1
Q13APBSS4160PANP
4
5
3
Q13BPBSS4160PANP
1.8k
R91.8k
4.7k
R74.7k
3
5
4
Q16BPBSS4160PAN
6
2
1
Q14APBSS4160PANP
4
5
3
Q14BPBSS4160PANP
1.8k
R1 01.8k
4.7k
R84.7k
OUT_RET
VG_SNUB1 VG_SNUB2
DSP_SIG_SNUB1 DSP_SIG_SNUB2
V_SNUB_2 V_SNUB_1
0.22U
12
C41
1R01 2R19
0.22U
1 2
C70
ZERO1 2R25
4.991 2R20
ZERO1 2R22
4.991 2R24
LM5113
LOH A1
VSSA2
A3
LILOHIA4 B1
B4
HS C1
C4
HOL D1D2D3
HS1 D4
U8
22P
12
C4322P
12
C42
49.91 2R21
49.91 2R23
GND
GND+5V_PRY
SIG_1
GPUL
GPLL
SIG_2
PRYSWL
VDD1VDDHBHIHOH
0.22
U
1 2
C49
1R01 2R33
0.22U
1 2
C48
4.991 2R34
4.991 2R38
22P
12
C50
49.91 2R37
+5V0_SEC
GS1_1OUT_RET
OUT_RET
OUT_RET
DSP_SIG_SEC1
GS1_2
6
2
3 EP
45
LDO VREF
VSS
1 VDD
U10
UCC27611DRV
1R01 2R40
0.22U
12
C45
1R01 2R26
0.22U
1 2
C44
ZERO1 2R32
4.991 2R27
ZERO1 2R29
4.991 2R31
LM5113
A1
A2
A3
A4 B1
B4
C1
C4
D1D2D3
D4
U9
22P
12
C1322P
12
C12
49.91 2R60
49.91 2R59
GPLRGND
GND+5V_PRY
SIG_1GPUR
SIG_2
PRYSWR
DNP1 2R35
GND GND
LOH
VSS
LILOHI
HSHOL
HS1
VDD1VDDHBHIHOH
0.22
U
1 2
C53
1R01 2R42
0.22U
1 2
C52
4.991 2R41
4.991 2R45
22P
12
C55
49.91 2R44
+5V0_SEC
OUT_RET
OUT_RET
OUT_RET
DSP_SIG_SEC2
GS2_2
GS2_1
UCC27611DRV
6
2
3 EP
54
LDO VREF
VSS
1 VDD
U11
1R01 2R43
EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2015 | | PAGE 9
QUICK START GUIDE EPC9115
Figure 9: EPC9115 Demonstration board schematic – Bias and Control
IL611
1234 5
678
U7
4701 2
1%
R12
22P
1 2
C58
22P
1 2
C17
1 6+5V
5
U6A
NC7WZ14
NC7WZ14
3 4
U6B
GND
+5V_PRY
OUT_RET
SIG_1
SIG_2
DSP_SIG1
DSP_SIG2
49.91 2R28
49.91 2R30
22P
12
C4622P
12
C47
GND GND
+5V_PRY
0.22U
2
C71
GND
0.22U
1 2
C40
GND
4701 2
1%
R13
IN1+IN1-IN2+IN2- GND
O2O1
VDD
AN2/CMP1C/CMP2A/RA2AN3/CMP1D/CMP2B/RP0/CN0/RB0AN4/CMP2C/CMP3A/RP9/CN9/RB9AN5/CMP2D/CMP3B/RP10/CN10/RB10VSS0OSC1/CLKIN/AN6/CMP3C/CMP4A/RP1/CN1/RB1OSC2/CLKO/AN7/CMP3D/CMP4B/RP2/CN2/RB2PGED2/DACOUT/INT0/RP3/CN3/RB3PGEC2/ETXREF/PR4/CN4/RB4VDDPGED3/RP8/CN8/RB8PGEC3/RP15/CN15/RB15TDO/RP5/CN5/RB5PGED1/TDI/SCL/RP6/CN6/RB6
123456789
1011121314
AN1/CMP1B/RA1AN0/CMP1A/RA0
MCLRAVDDAVSS
PWM1L/RA3PWM1H/RA4
PWM2L/RP14/CN14/RB14PWM2H/RP13/CN13/RB13
TCK/PWM3L/RP13/CN12/RB12TMS/PWM3H/RP11/CN11/RB11
VCAP/VDDCOREVSS1
PGEC1/SDA/RP7/CN7/RB7EP
282726252423222120191817161529
U5
180 OHMS
1 2
L1
4.7U
12
C16
4.7U
12
C14
10K
12
R1610K
12
R17
1 1J2A
2 2J2B
3 3J2C
4 4J2D
5 5J2E
10K
12
R11
MCLR
MCLR
3V3_SEC
+3V3_SEC
+3V3_SEC
+3V3_SEC
OUT_RET
OUT_RET
OUT_RET
OUT_RET
BA DSP_SIG_SEC1
VOUT_DSP
DSP_SIG_SEC2
PGEC
PGEC
SDA
SDA
SCL
SCL
DSP_SIG1DSP_SIG2
PGED
PGED
DSP_SIG_SNUB1DSP_SIG_SNUB2
IOUT_DSP
IN CIRCUIT PROGRAM HEADER FOR CONTROLLING PARAMETERS, 12C
33FJ16GS502
4.99K
12
0.1%
R14
1K
12
0.1%
R15
1000P
12
C18
+OUT
OUT_RET
VOUT_DSP
+
SP
2
3
4
5
1
U12OPA2 09AIDB V
DNP
12
R52
1k
1 2
0.1%
R48
100nF, 50 VC19
2491 2R47
DN
P
12
C57
DNP
1 2
C15
OUT_RET
OUT_RET
IOUT_SENSE
+OUT
V_SNUB
OUT_RET
IOUT_D
DNPD5
+3V3_SEC
1k
1 2
0.1%
R51
1k
12
0.1%
R46
4.99k
1 2
0.1%
R50
20k
1 2
0.1%
R49
2.2U
12
C10EN3
VO 5
GND 2
VI1
BYP 4
U4
NCP1030
GND1
CT2
VFBF3
COMP4 OV 5UV 6VCC 7VDR 8
U3
100 K
12
R2
15K
12
R6
330 P
12
C7
33.2K
12
R3
10K
12
R5
12
D3
3.3U
12
C9
12
D1
3.3U
12
C6
1 2
D2
0.1U
12
C8
1
2
T1A
33
4 4T1B
5
6 6
T1C
0.1U
12
C5
1R0
1 2R1
33.2K
12
R4
EN3
VO 5
GND 2
VI1
BYP 4
U2
2.2U
12
C2
2.2U
12
C3
2.2U
12
C4
VO 32
1
2.2U
12
C1
2.2U
12
C11
+ 5V0_SEC
+ 3V3_SEC
GND
+ 5V_PRY
OUT_RET
VCC_SEC
VCC_SEC
VIN_FILT
R1 handy to disable bias
VIN
GND
GND
GND
VCC_PRY
VCC_PRY
VCC_PRY
BAT41K
BAT41K
BAT41K
LP2985 5V0
U13V3
LP2985 5V0
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