EPC9510 TDK

Demonstration System EPC9510 Quick Start Guide EPC2107 and EPC2036 6.78 MHz, ZVS Class-D Wireless Power AmplifierQUICK START GUIDE Demonstration System EPC9510 DESCRIPTION Table 1: Performance Summary (T = 25C) EPC9510 A The EPC9510 is a high efficiency, Zero Voltage Switching (ZVS), class-D Symbol Parameter Conditions Min Max Units wireless power amplifier demonstration board that operates at 6.78 MHz Also used in (Lowest ISM band). The purpose of this demonstration system is to Bus Input Voltage Range V bypass mode 17 24 V IN Pre-Regulator Mode simplify the evaluation process of wireless power amplifier technology for logic supply Amp Input Voltage Range using eGaN FETs by including all the critical components on a single V 0 80 V IN Bypass Mode board that can be easily connected into an existing system. V Switch Node Output Voltage 66 V OUT The amplifier board features the enhancement-mode half-bridge field Switch Node Output Current I 0.8* A effect transistor (FET), the 100 V rated EPC2107 eGaN FET with integrated OUT (each) synchronous bootstrap FET. The amplifier is configured for single ended External Oscillator Input V Input Low -0.3 0.8 V extosc Threshold operation and includes the gate driver/s, oscillator, and feedback Input High 2.4 5 V controller for the pre-regulator that ensures operation for wireless power Pre-regulator Disable V Floating -0.3 5.5 V control based on the A4WP standard. This allows for testing compliant to Pre Disable Voltage Range the A4WP class 2 standard over a load range as high as 35j . The pre- Pre-regulator Disable I Floating -10 10 mA Pre Disable Current regulator features the 100 V rated 65 m EPC2036 as the main switching Oscillator Disable Open Drain/ device for a SEPIC converter. V -0.3 5 V Osc Disable Voltage Range Collector Oscillator Disable Open Drain/ For more information on the EPC2107 and EPC2036 eGaN FETs please I -25 25 mA Osc Disable Current Collector refer to the datasheet available from EPC at www.epc-co.com. The Differential or Single Select Open Drain/ V V -0.3 5.5 SgnDiff Voltage Collector datasheet should be read in conjunction with this quick start guide. Differential or Single Select Open Drain/ I -1 1 mA SgnDiff Current Collector * Maximum current depends on die temperature actual maximum current will be subject to switching frequency, bus voltage and thermals. DETAILED DESCRIPTION Figure 1 shows the system block diagram of the EPC9510 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 66 V and the maximum power drawn by the amplifier is pre-set to 10 W. The coil current magnitude is pre-set to 580 mA RMS but can be made adjustable using P25. The pre-regulator comprises a EPC9510 Amplifier Board Photo SEPIC converter that can operate at full power from 17 V through 24 V. 2 EPC EFFICIENT POWER CONVERSION CORPORATION WWW.EPC-CO.COM COPYRIGHT 2016