EPC9065

EPC9065 Datasheet

Development Board EPC9065 Quick Start Guide

Part	Datasheet
EPC9065	EPC9065 (pdf)

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Development Board EPC9065 Quick Start Guide EPC2007C, EPC8010 MHz, High Power ZVS Class-D Development Board QUICK START GUIDE EPC9065 The EPC9065 is a high efficiency, Zero Voltage Switching ZVS differential mode Class-D amplifier development board that operates at, but is not limited to, MHz Lowest ISM band . The purpose of this development board is to simplify the evaluation process of a high power ZVS Class-D amplifier f or u se i n a pplications s uch a s A 4WP w ireless p ower u sing FETs by including all the critical components on a single board that can be easily connected into an existing system. To support the increased power capability, two mounted heat sinks are included. The amplifier board features the EPC2007C and the EPC8010, which are 100 V rated enhancement-mode gallium nitride FETs FET . The EPC2007C is used in the Class-D amplifier while the EPC8010 is used as a synchronous bootstrap FET. The amplifier can be set to operate in either differential m ode o r s ingle e nded m ode a nd i ncludes t he g ate d rivers and MHz oscillator. For more information on the EPC2007C or EPC8010 eGaN FETs please refer to the datasheet available from EPC at The datasheet should be read in conjunction with this quick start guide. Table 1 Performance Summary TA = 25°C EPC9065 Parameter Conditions Min Max Units VDD Logic Input Voltage Range VAMP Amp Input Voltage Range 0 80 V VOUTA Switch Node Output Voltage VOUTB Switch Node Output Voltage IOUT Switch Node Output Current each ARMS Vextosc External Oscillator Input Threshold Input ‘Low’ Input ‘High’ 5 VOsc_Disable Oscillator Disable Voltage Range Open drain/ collector IOsc_Disable Oscillator Disable Current Open drain/ collector * Maximum current depends on die temperature actual maximum current will be subject to switching frequency, bus voltage and thermals. DETAILED DESCRIPTION The EPC9065 consists of a differential mode ZVS Class-D amplifier, a MHz oscillator, and a separate heat sink for each Class-D section. The power schematic of the EPC9065 is shown in figure For operating frequencies other than MHz, the oscillator can be disabled by placing a jumper into J60 or can be externally shutdown using an externally controlled open collector / drain transistor on the terminals of J60 note which is the ground connection . The oscillator disable switch needs to be capable of sinking at least 25 mA. The external oscillator can then be connected to J71. ZVS Timing Adjustment Setting the correct time to establish ZVS transitions is critical to achieving high efficiency with the EPC9065 amplifier. This can be done by selecting the values for R71, R72, R73, and R74 respectively. This procedure is best performed using a potentiometer installed at the appropriate locations P71, P72, P73, and P74 that is used to determine the fixed resistor values. The timing MUST initially be set without a load connected to the amplifier. The timing diagrams are given in figure 4 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: With power off, connect the logic input supply - 12V toVDD connector J90 . Note the polarity of the supply connector. Connect a LOW capacitance oscilloscope probe to the probe-hole of the half-bridge to be set and lean it against the ground post as shown in figure Turn on the logic supply make sure the supply is set to approximately - 12 V. Coil connection LZVS12 LZVS1 C ZVS1 LZVS2 C ZVS2 Figure 1 Power schematic of the EPC9065 differential mode ZVS amplifier

PDF Datasheet Preview

Development Board EPC9065 Quick Start Guide

EPC2007C, EPC8010 MHz, High Power ZVS Class-D Development Board

QUICK START GUIDE

EPC9065

The EPC9065 is a high efficiency, Zero Voltage Switching ZVS differential mode Class-D amplifier development board that operates at, but is not limited to, MHz Lowest ISM band . The purpose of this development board is to simplify the evaluation process of a high power ZVS Class-D amplifier f or u se i n a pplications s uch a s A 4WP w ireless p ower u sing FETs by including all the critical components on a single board that can be easily connected into an existing system. To support the increased power capability, two mounted heat sinks are included.

The amplifier board features the EPC2007C and the EPC8010, which are 100 V rated enhancement-mode gallium nitride FETs FET . The EPC2007C is used in the Class-D amplifier while the EPC8010 is used as a synchronous bootstrap FET. The amplifier can be set to operate in either differential m ode o r s ingle e nded m ode a nd i ncludes t he g ate d rivers and MHz oscillator.

For more information on the EPC2007C or EPC8010 eGaN FETs please refer to the datasheet available from EPC at The datasheet should be read in conjunction with this quick start guide.

Table 1 Performance Summary TA = 25°C EPC9065

Parameter

Conditions Min Max Units

VDD Logic Input Voltage Range

VAMP Amp Input Voltage Range
0 80 V

VOUTA Switch Node Output Voltage

VOUTB Switch Node Output Voltage

IOUT

Switch Node Output Current each

ARMS

Vextosc

External Oscillator Input Threshold

Input ‘Low’ Input ‘High’ 5

VOsc_Disable

Oscillator Disable Voltage Range

Open drain/ collector

IOsc_Disable Oscillator Disable Current

Open drain/ collector
* Maximum current depends on die temperature actual maximum current will be subject to switching frequency, bus voltage and thermals.

DETAILED DESCRIPTION

The EPC9065 consists of a differential mode ZVS Class-D amplifier, a MHz oscillator, and a separate heat sink for each Class-D section. The power schematic of the EPC9065 is shown in figure

For operating frequencies other than MHz, the oscillator can be disabled by placing a jumper into J60 or can be externally shutdown using an externally controlled open collector / drain transistor on the terminals of J60 note which is the ground connection . The oscillator disable switch needs to be capable of sinking at least 25 mA. The external oscillator can then be connected to J71.

ZVS Timing Adjustment

Setting the correct time to establish ZVS transitions is critical to achieving high efficiency with the EPC9065 amplifier. This can be done by selecting the values for R71, R72, R73, and R74 respectively. This procedure is best performed using a potentiometer installed at the appropriate locations P71, P72, P73, and P74 that is used to determine the fixed resistor values. The timing MUST initially be set without a load connected to the amplifier. The timing diagrams are given in figure 4 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:

With power off, connect the logic input supply - 12V toVDD connector J90 . Note the polarity of the supply connector.

Connect a LOW capacitance oscilloscope probe to the probe-hole of the half-bridge to be set and lean it against the ground post as shown in figure

Turn on the logic supply make sure the supply is set to approximately - 12 V.

Coil connection

LZVS12

LZVS1 C ZVS1

LZVS2

C ZVS2

Figure 1 Power schematic of the EPC9065 differential mode ZVS amplifier

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Datasheet ID: EPC9065 510924