Demonstration System EPC9111 Quick Start Guide

Transcription

1 Demonstration System EPC9 Quick Start Guide 6.78 MHz, ZVS Class-D Wireless Power System using EPC04C/EPC038 Revision 3.

2 Demonstration System EPC9 DESCRIPTION The EPC9 Wireless power demonstration system is a high efficiency, A4WP compatible, Zero Voltage Switching (ZVS), Class-D Wireless Power transfer demonstration kit capable of delivering up to 35 W into a DC load while operating at 6.78 MHz (Lowest ISM band). It includes an amplifier board (EPC9506) with a pre-regulator that limits the output current and voltage and ensures proper operation of the amplifier regardless of coupling and load variations between the source and device. The purpose of this demonstration system is to simplify the evaluation process of the wireless power technology using egan FETs. The EPC9 wireless power system comprises three boards (shown in figure ) namely: ) A Source Board (Transmitter or Power Amplifier) EPC9506 ) A Class 3 A4WP compatible Source Coil (Transmit Coil) 3) A Category 3 A4WP compatible Device Coil with rectifier and DC smoothing capacitor. The amplifier board features the EPC04C and EPC038 enhancement mode field effect transistor (FET) in an optional half-bridge topology (single ended configuration) or default full-bridge topology (differential configuration), and includes the gate driver/s and oscillator that ensures operation of the system at 6.78 MHz The amplifier board can also be operated using an external oscillator or by using the included ultra low power oscillator. This revision can operate in either Single ended or Differential mode by changing a jumper setting. This allows for high efficiency operation with load impedance ranges that allow for single ended operation. Table : Performance Summary (TA = 5 C) EPC9506 Symbol Parameter Conditions Min Max Units V DD Control Supply Input Range V IN Bus Input Voltage Range Pre-Regulator mode V IN Bus Input Voltage Range Bypass mode V OUT I OUT V extosc V Pre_Disable I Pre_Disable V Osc_Disable I Osc_Disable Switch Node Output Voltage Switch Node Output Current (each) External Oscillator input threshold Pre-regulator disable voltage range Pre-regulator disable current Oscillator disable voltage range Oscillator disable current 7 V 8 3 V 0 3 V V IN V 0* A Input Low V Input High.4 Open drain/ collector Open drain/ collector Open drain/ collector Open drain/ collector ma ma Finally, the timing adjust circuits for the ZVS Class-D amplifiers have been separated to further ensure highest possible efficiency setting and includes separate ZVS tank circuits. The amplifier board is equipped with a pre-regulator that limits the DC 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. The Source and Device Coils are Alliance for Wireless Power (A4WP) compatible and have been pre-tuned to operate at 6.78 MHz with the EPC9506 amplifier. The source coil is class 3 and the device coil is category 3 compliant. The device board includes a high frequency schottky diode based full bridge rectifier and output filter to deliver a filtered unregulated DC voltage. The device board comes equipped with two LED s, one green to indicate the power is being received with an output voltage equal or greater than 4 V and a second red LED that indicates that the output voltage has reached the maximum and is above 37 V. For more information on the EPC04C and EPC038 egan FETs please refer to the datasheet available from EPC at The datasheet should be read in conjunction with this quick start guide. The amplifier coil used in this wireless power transfer demo system is provided by NuCurrent (nucurrent.com). Reverse Engineering of the Source coil is prohibited and protected by multiple US and international patents. For additional information on the source coil, please contact NuCurrent direct or EPC for contact information. Table : Performance Summary (TA = 5 C) Catagory 3 Device Board Symbol Parameter Conditions Min Max Units V OUT Output Voltage Range 0 38 V I OUT Output Current Range 0.5# A # Actual maximum current subject to operating temperature limits * Assumes inductive load, maximum current depends on die temperature actual maximum current with be subject to switching frequency, bus voltage and thermals. EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07

3 MECHANICAL ASSEMBLY The assembly of the EPC9 Wireless Demonstration kit is simple and shown in figure. The source coil and amplifier have been equipped with reverse polarity SMA connectors. The source coil is simply connected to the amplifier. The device board does not need to be mechanically attached to the source coil. DETAILED DESCRIPTION The Amplifier Board (EPC9506) Figure 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.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 V below the input voltage. The pre-regulator can be bypassed by moving the jumper (JP60) over from the right pins to the left 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 5 ma. An external oscillator can be used instead of the internal oscillator when connected to J7 (note which is the ground connection) and the jumper (JP70) is moved from the right pins to the left pins. The pre-regulator can also be disabled in the same manner as the oscillator using J5. 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 pins to the left 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 Q and Q are used. In this mode only L ZVS and C ZVS are used to establish ZVS operation. If a permanent single ended configuration is required and Q and Q are populated, then the following changes need to be made to the board: ) Remove R77 and R78 OR P77 and P78. ) Short out C4_ and C43_. 3) Short the connection of JMP (back side of the board) 4) Remove L ZVS (if populated) 5) Add L ZVS (70nH) 6) Check that C ZVS is populated, if not then install. Demonstration System EPC9 7) R7 and R7 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 R7, R7, R77, and R78 respectively. This procedure is best performed using potentiometers P7, P7, P77, and P78 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 9 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:. Remove the jumper in JP60 and insert it into J5 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 ) and the ground of the main power to the ground (-) connection of J50 -VIN.. 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 J between the two egan FETs Q0_x and Q_A and lean against the ground post as shown in figure Turn on the control supply make sure the supply is between 7 V and V range (7. is recommended). 5. Turn on the main supply voltage to the required predominant operating value (such as 4 V but NEVER exceed the absolute maximum voltage of 3 V). 6. While observing the oscilloscope adjust P7 or P77 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 P7 or P 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 J5 and inserting it back into JP60 (right pins & 3). Differential Operation The amplifier can be configured for differential operation where all the devices are used; Q, Q, Q and Q. In this mode either L ZVS, L ZVS and C ZVS or L ZVS only is used to establish ZVS operation. EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07 3

4 QUICK START GUIDE Demonstration System EPC9 Determining Component Values for LZVS 8 fsw COSSQ Where: () 64 mm 0 mm Source Coil tvt 80 mm Device Board 50 mm LZVS = Amplifier Board 45 mm 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 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: Δtvt = Voltage transition time [s] fsw = Operating frequency [Hz] 68 mm 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: VAMP () COSSQ = 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 ns through ns. For the differential case the voltage and charge (COSSQ) are doubled. QUICK START PROCEDURE The EPC9 demonstration system is easy to set up and evaluate the performance of the egan FET in a wireless power transfer application. Refer to figure to assemble the system and figures 4 though figure 8 for proper connection and measurement setup before follow the testing procedures. The EPC9506 can be operated using any one of two alternative methods: a. Using the pre-regulator b. Bypassing the pre-regulator The Source Coil Figure 3 shows the schematic for the source coil which is class 3 A4WP compliant. The matching network includes both series and shunt tuning. The matching network series tuning is differential to allow balanced connection and voltage reduction for the capacitors. The Device Board Figure 4 shows the basic schematic for the device coil which is category 3 A4WP compliant. The matching network includes both series and shunt tuning. The matching network series tuning is differential to allow balanced connection and voltage reduction for the capacitors. The device board comes equipped with a kelvin connected output DC voltage measurement terminal and a built in shunt to measure the output DC current. Two LEDs have been provided to indicate that the board is receiving power with an output voltage greater than 4 V (green LED) and that the board output voltage limit has been reached (greater than 37 V using the red LED). 4 Figure : Mechanical Assembly of the EPC9 Wireless Power Transfer Demonstration System 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.. Make sure the entire system is fully assembled prior to making electrical connections and make sure jumper (JP60 is set to pre-regulator right pins).. With power off, connect the main input power supply bus to +VIN (J50). Note the polarity of the supply connector. 3. With power off, connect the control input power supply bus to +VDD (J90). Note the polarity of the supply connector. 4. Select and connect an applicable load resistance to the device board. 5. Make sure all instrumentation is connected to the system. 6. Turn on the control supply make sure the supply is between 7 V and V (7. is recommended). EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07

5 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 3 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. 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 current or thermal protection for the egan FETs.. Make sure the entire system is fully assembled prior to making electrical connections and remove the jumper JP60 and insert it into J5 to place the EPC9506 amplifier in bypass mode. Never connect the main power positive (+) to J50 when operating in bypass mode.. With power off, connect the main input power supply ground to the ground terminal of J50 (-) and the positive (+) to the center pin of JP With power off, connect the control input power supply bus to +V DD (J90). Note the polarity of the supply connector. 4. Select and connect an applicable load resistance to the device board. 5. Make sure all instrumentation is connected to the system. 6. Turn on the control supply make sure the supply is between 7 V and V range (7. is recommended). 7. Turn on the main supply voltage to the required value (it is recommended to start at V and do not exceed the absolute maximum voltage of 3 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. See Pre-Cautions when operating in the bypass mode 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. Demonstration System EPC9 SWITCHING BETWEEN SINGLE-ENDED AND DIFFERENTIAL MODE OPERATION The ZVS Class-D amplifier can be operated in either single-ended or differential mode operation by changing the jumper setting of J75. When inserted the amplifier 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 5 ma and withstand at least 6 V. THERMAL CONSIDERATIONS The EPC9 demonstration system showcases the EP04C and EPC038 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 EPC9 is intended for bench evaluation with room ambient temperature with load power up to 35 W without the need for a heat-sink. However, 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 EPC9 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. Pre-Cautions The EPC9 demonstration system has no controller or enhanced protections systems and therefore should be operated with caution. Some specific pre-cautions are:. Never operate the Source Coil within 6 inches in any direction of any solid metal objects as this will shift the tuning of the coil. Please contact EPC 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 amplifer.. 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. 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 (J and J3 as shown in figure 8). EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07 5

6 Demonstration System EPC9 Bypass Mode Pre-Regulator Jumper JP60 V AMP Coil Pre- Regulator Q L ZVS Q V IN L ZVS + Pre- Regulation J50 L ZVS Q C ZVS Figure : Diagram of EPC9506 Amplifier Board Single Ended Operation Jumper Q Matching Impedance Network Matching Impedance Network Class 3 Coil Coil Cat. 3 Coil Un-Regulated DC output Source Coil Figure 3: Diagram of the A4WP Class 3 Source Coil Device Board Figure 4: Basic Schematic of the A4WP Category 3 Device Board Stand-off Mounting Holes (x4) 7- V DC Gate Drive and Control Supply (Note Polarity) V DC V IN Supply (Note Polarity) + Amplifier Voltage Source Jumper Bypass Pre-Regulator Jumper Pre-Regulator Timing Setting (Not Installed) Amplifier Timing Setting (Not Installed) Switch-node Main Oscilloscope probe Source Coil Ground Post Pre-Regulator Current Setting Disable Pre-Regulator Jumper Oscillator Selection Jumper External / Internal External Oscillator Disable Oscillator Jumper Switch-node Secondary Oscilloscope probe Amplifier Board Front-side Figure 5: Proper and Measurement Setup for the EPC9506 Amplifier Board 6 EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07

7 Demonstration System EPC9 Source Board Matching with trombone tuning External Load Output Voltage > LED Output Voltage > 37 V LED Standoffs for Mechanical attachment to Source Coil to these locations (x5) Device Output Current (300 m Shunt) mv A Device Output Voltage (0 V 38 V max ) V Load Current (See Notes for details) * ONLY to be used with Shunt removed Matching Half / Full Bridge Mode Jumper Figure 6: Proper for the Source Coil Figure 7: Proper and Measurement Setup for the Device Board Do not use probe ground lead Ground probe against post Place probe tip in large via Minimize loop Figure 8: Proper Measurement of the Switch Nodes Using the Hole and Ground Post Q turn-off Q turn-off V AMP Q turn-on V AMP Q turn-on 0 Partial ZVS ZVS time 0 Shootthrough Shootthrough Partial ZVS ZVS time ZVS + Diode Conduction ZVS + Diode Conduction Figure 9: ZVS Timing Diagrams EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07 7

8 Demonstration System EPC9 Table 4: Bill of Materials - Amplifier Board Item Qty Reference Part Description Manufacturer Part # C_, C_ Capacitor, Ceramic, 4.7 µf, 0 V ±0%, X5R Samsung CL05A475MP5NRNC C5, C60 Capacitor, Ceramic, 4.7 µf, 6 V, ±0%, X5R TDK C608X5RC475K080AC 3 7 C5_, C5_, C6_, C6_, C6, C64, C65 Capacitor, Ceramic, 4.7 µf, 50 V, ±0%, X5R Taiyo Yuden UMK35BJ475MM-T 4 C50 Capacitor, Ceramic,.0 µf, 50 V, ±0%, X7R Taiyo Yuden UMK07AB705KA-T 5 Czvs, Czvs Capacitor, Ceramic,.0 µf, 50 V, 0%, X7R TDK C0X7RH05K5AB 6 3 C90, C9, C9 Capacitor, Ceramic,.0 µf,, ±0%, X5R Murata GRM88R6E05KAD 7 6 C7, C7, C77, C78, C80, C8 Capacitor, Ceramic, 00 nf,, ±0%, X7R TDK C608X7RE04K080AA 8 9 C_, C_, C4_, C4_, C5_, C5_, C57, C63, C70 Capacitor, Ceramic, 00 nf,, ±0%, X7R TDK C005X7RE04K050BB 9 C3_, C3_ Capacitor, Ceramic, nf,, ±0%, X7R TDK C005X7RE3K050BB 0 C_, C_, C_, C_, C3_, C3_, C4_, C4_, C55, C66, C67, C68 Capacitor, Ceramic, 0 nf, 00 V, ±0%, X7S TDK C005X7SA03M050BB C53, C54 Capacitor, Ceramic,. nf, 50 V, ±0%, X7R Yageo CC040KRX7R9BB C56 Capacitor, Ceramic, nf, 50 V, ±0%, X7R Yageo CC040KRX7R9BB0 3 C8, C83 Capacitor, Ceramic, 00 pf, 50 V, ±5%, NPO TDK C608C0GH0J080AA 4 C84 Capacitor, Ceramic, 47 pf, 50 V, ±5%, NPO Yageo CC040JRNPO9BN C4_, C4_, C43_, C43_, C75 Capacitor, Ceramic, pf, 50 V, ±5%, NPO TDK C005C0GH0J050BA 6 RT Resistor, 470 KΩ, ±3%, /0 W, Th@5 C Murata NCP5WM474E03RC 7 R57 Resistor, 374 KΩ, ±%, /0 W Panasonic ERJ-3EKF3743V 8 R58 Resistor, 4 KΩ, ±%, /0 W Panasonic ERJ-RKF43X 9 R5 Resistor, 80 KΩ, ±%, /0 W Panasonic ERJ-RKF803X 0 R70 Resistor, 47 KΩ, ±5%, /0 W Stackpole RMCF0603JT47K0 R59 Resistor, 45.3 KΩ, ±%, /0 W Panasonic ERJ-RKF453X R50 Resistor, 40. KΩ, ±%, /6 W Yageo RC040FR-0740KL 3 R3_, R3_ Resistor, 7 KΩ, ±%, ±/6 W Panasonic ERJ-RKF70X 4 R54 Resistor, 5 KΩ, ±5%, /6 W Yageo RC040JR-075KL 5 R73 Resistor, 0 KΩ, ±%, /0 W Stackpole RMCF0603FT0K0 6 R5, R75 Resistor, 0 KΩ, ±%, /0 W Panasonic ERJ-RKF00X 7 R47 Resistor, 6.04 KΩ, ±%, /0 W Panasonic ERJ-RKF604X 8 R49 Resistor, 3.3 KΩ, ±%, /0 W Panasonic ERJ-RKF330X 9 R48 Resistor,.7 KΩ, ±%, /0 W Panasonic ERJ-RKF74X 30 R83 Resistor, 9 Ω, ±%, /0 W Panasonic ERJ-3EKF90V 3 R7, R78 Resistor, 80 Ω, ±%, /0 W Panasonic ERJ-3EKF800V 3 R7, R77 Resistor, 50 Ω, ±%, /0 W Panasonic ERJ-3EKF500V 33 R8 Resistor, 3.6 Ω, ±%, /0 W Panasonic ERJ-3EKF3R6V 34 R_, R_ Resistor, 0 Ω, ±%, /6 W Stackpole RMCF040FT0R R55, R56, R84 Resistor, 0 Ω, ±%, /6 W Yageo RC040FR-070RL 36 R4_, R4_ Resistor, 4.7 Ω, ±%, ±/6 W Yageo RC040FR-074R7L 37 6 R0_, R0_, R_, R_, R60, R6 Resistor,. Ω, ±%, /6 W Yageo RC040JR-07RL 38 R6 Resistor, 4 mω, ±%, W Susumu PRL63-R04-F-T 39 L60 40 Lzvs D_, D_ D_, D_, D3_, D3_, D7, D7, D77, D78, D8, D83 Inductor, 0 μh, ±0%, 3.5 A, 33 mω, Resonance = 40 MHz, Frequency Tested = 00 KHz Inductor, 500 nh, ±5%, ±%, 4.3 A, 6.5 mω, Resonance = 485 MHz, Frequency Tested = 50 MHz Diode, Schottky Diode, 30 V, VF = 370 ma, 30 ma Diode, Schottky, 00 V, 0. A, VF = 00 ma Würth Electronics CoilCraft Diodes Inc ST Microelectronics 99SQ-50_EB SDM03U40-7 BAT4KFILM 43 D4_, D4_ Diode, Zener, 5. V, 50 mw. ±5% Bourns Inc. CD0603-Z5V 44 6 Q0_, Q0_, Q_, Q_, Q60, Q6 egan FET, 40 V, 0 A, R DS(on) = 6 0 A, EPC EPC04C (continued on next page) 8 EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07

9 Demonstration System EPC9 Table 4: Bill of Materials - Amplifier Board (continued) Item Qty Reference Part Description Manufacturer Part # 45 Q4_, Q4_ egan FET, 00 V, 6 A, R DS(on) = 30 6 A, EPC EPC U90 Jumper, Jumper with Test Point X Pin 4 JMP, JP6 0.00" Pitch EPC would like to acknowledge Würth Electronics ( for their support of this project. Note : (36 pin Header to be cut as follows) (8) (GP_, GP_, J6) cut pin (J5, J70, J7, J75, JP70, J90) cut pins (JP60) cut 3 pins IC's, LDO, 50 ma, up to 6 V IN, V dropout = ma Microchip Table 5: Bill of Materials - Source Coil Item Qty Reference Part Description Manufacturer Part # Ctrombone 680 pf, 300 V Vishay VJD68KXDAR C 3 C 5 pf, 500 V Vishay VJD50JXRAJ 4 C3 560 pf, 300 V Vishay VJD56KXDAR 5 PCB Class 3 coil former NuCurrent R6_RZTX_D 6 C4, C6 0 Ω, 06 Vishay RCL060000Z0EA 7 C5 8 J SMA PCB edge Linx CONREVSMA Table 6: Bill of Materials - Device Board Item Qty Reference Part Description Manufacturer Part # C84 00 nf, 50 V Murata GRM88R7H04KA93D C85 0 µf, 50 V Murata GRM3DF5H06ZA0L 3 PCB Cat3PRU Coastal Circuits Cat3DeviceBoard 4 CM, CM 300 pf Vishay VJD30KXLAT 5 4 CM, CM, CMP, CMP Vishay VJD0JXRAT, VJD560JXRAJ 6 3 CM5, CM7, CMP3 Vishay VJ0505D0JXCAJ 7 CM6, CM8 56 pf Vishay VJ0505D560JXPAJ 8 CMP4 00 pf Vishay VJ0505D0JXCAJ 9 4 D80, D8, D8, D83 40 V, A Diodes Inc. PD3S D84 LED 0603 Green Lite-On LTST-C93KGKT-5A D85.7 V 50 mw NXP BZX84-CV7,5 D86 LED 0603 Red Lite-On LTST-C93KRKT-5A 3 D87 33 V, 50 mw NXP BZX84-C33,5 4 J8, J8." Male Vert. Würth LM, LM 8 nh Würth R mω, W Stackpole CSRN5FKR300 7 R8 4.7k Ω Stackpole RMCF06FT4K70 8 R8 4 Ω Yageo RMCF0603FT4R 9 4 TP, TP, TP3, TP4 SMD probe loop Keystone JPR Wire Jumper at CM EPC would like to acknowledge Würth Electronics ( for their support of this project. MCP703T-500E/MC 47 3 U_, U_, U60 IC's, Gate Driver, 5. VDC,. A, 4. to 5. Texas Instruments LM53TME/NOPB 48 U50 IC's, Step Down Controller,.07 MHz, 6 V to 36 V Linear Technologies LT374EUF#PBF 49 3 U7, U77, U8 IC's, Logic NAND Gate,.6 to 5., ± 4 ma Fairchild NC7SZ00L6X 50 3 U7, U78, U80 5 U70 IC's, Input NAND Gate, Tiny Logic,.6 to 5., ± 3 ma IC's, Programmable Oscillator.5 to 60 MHz, V IN =.8 V/./.8 V/3.0 V/3.3 V/5.0 V EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07 9 Fairchild 5 TP, TP Test Point, Test Point Subminiature Keystone GP_, GP_, J6, J5, JP60, J70, J7, J75, JP70, J90 (See Note ) Header, Male Vertical, 36 Pin. 30" Contact Height,." Center Pitch EPSON FCI NC7SZ08L6X SG-800CE-PHB HLF 54 J Connector, RP-SMA Plug, 50 Ω Linx CONREVSMA03.06 Connector, Male Locking Header, WR-WTB 55 J50 Molex Inc mm,.56" Center to Center Pitch Pin Optional Components C73 Capacitor, pf, 7 P49, P7, P7, P77, P78, P8, P83 Potentiometer, k, 0 k 3 Lzvs, Lzvs Inductor,

10 Demonstration System EPC9 Q4 E PC V.8 Ω C 00nF, Gbtst R4 4 Ω 7 C4 00nF, HS D4 CD 0603-Z5V OUT 4.7 V D3 SDM0 3U40 40V 30mA C5 00nF, R3 7 K R 0 Ω Synchronous Bootstrap Power Supply C3 nf, D SDM0 3U40 VAMP Va mp C 0nF, 00 V Va mp C 0nF, 00 V Va mp C5 4.7 μf 50 V GL H Va mp Va mp Va mp C3 0nF, 00 V C4 0nF, 00 V C6 4.7 μf 0 V Hin L in Hin L in C4 pf, 50 V Hin L in C43 pf, 50 V U L M53T M Gate Driver HS GUH GUL Out GL H GL L 4.7 V D BAT54K FIL M C 4.7μF 0 V R0 GUH Ω R GL H Ω GUL PH ProbeHole GLL Va mp Out Q0 E PC04C OUT Q E PC04C GP. Male Vert. Ground Post Figure 0: EPC9506 Source Board Amplifier Schematic 0 EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07

11 Demonstration System EPC9 R K J5 PreDis. Male Vert. R58 4 K PreDis EN/UVLO 9 Vref Vref UVLO 3 Sync 7 Rt 5 Osc 40. K 6 0 VC Cnt 8 LG 5 Cnt V 4 0 SS Cnt U50 LT374EUF#PBF C50 μf, 50 V Vccint C5 4.7 μf, 6 V 4 Figure : EPC9506 -Source Board Pre-Regulator Schematic R5 80 K R5 0 K R54 5 K C53.nF, 50 V Sns+ Vout Vfdbk C54.nF, 50 V C56 nf, 50 V R55 0 Ω R56 0 Ω Vout PWM HG PWM A B U80 NC7SZ08L6X Y C80 00nF, Buffer 5V R84 0 Ω C84 47pF, 50 V PWM HGPR LGPR A U8 NC7SZ00L6X B C8 00nF, Buffer R8 3.6 Ω Deadtime Upper P8 HGPR EMPTY K D8 SDM03U40 UP C μf, 6 V C63 00nF, U60 LM53TM SW UP GUPH GUPL SW GLPH GLPL Gate Driver R83 9 Ω Deadtime Lower P83 LGPR EMPTY K D83 SDM03U40 R6 GUPH Ω GUPL GLPH R60 Ω Q6 EPC04C GLPL SW Q60 EPC04 C Sns+ R6 4m ΩW C66 C67 0nF, 00 V 0nF, 00 V C68 0nF, 00 V Vout Vout PreRegulator Disable Vref R K C57 00nF, 0 K P49 R48.74 K C55 0nF, 00 V Current Set Vref R K Temp C8 00pF, C83 00pF, R K J6 ProbeHole C μf 50 V C μf 50 V L60 0 μh J6." Male Vert. Ground Post C6 4.7 μf 50 V EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07

12 Demonstration System EPC9 J SMA PCB Edge C trombone 680 pf Adjust on trombone C6 0 Ω 06 Amplifier C3 560 pf PCB Cls3PTU C 5 pf C4 0 Ω 06 Coil Matching C5 C Figure : Class 3 Source Board Schematic Kelvin Output Current TP3 SMD probe loop TP4 SMD probe loop J8." Male Vert. Shunt Bypass CM 5 CM CM 300 pf CM 6 56 pf LM 8 nh V RECT D80 40 V, A D8 40 V, A R mω,w TP SMD probe loop TP Kelvin Output Voltage SMD probe loop V OUT J8." Male Vert. Output Cl Cat3PRU CMP CMP3 RX Coil CM P4 00 pf CMP CM 300 pf CM 7 Matching LM 8 nh V RECT V RECT V OUT V OUT C84 00 nf, 50V C85 0 µf, 50 V R8 4.7k D84 LED 0603 Green R8 4 Ω D86 LED 0603 Red CM CM 8 56 pf D8 40 V, A D83 40 V, A D85 D87.7 V, 50 mw 33 V, 50 mw Receive Indicator V OUT > 4 V Over-Voltage Indicator V OUT > 36 V Figure 3: Category 3 Device Board Schematic EPC EFFICIENT POWER CONVERSION CORPORATION COPYRIGHT 07

13 For More Information: Please contact or your local sales representative Visit our website: Sign-up to receive EPC updates at bit.ly/epcupdates or text EPC to 88 EPC Products are distributed through Digi-Key. Demonstration Board Warning and Disclaimer The EPC9 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 00% 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.