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EPC EPC2007C | Demoboard EPC9112

6.78 MHz, ZVS Class-D Wireless Power System using EPC2007C / EPC2038

Overview

TopologyWireless Power Transfer
Input voltage7-12 V
Output 138 V / 1.5 A

Description

The EPC9112 wireless power demonstration system is a high efficiency, A4WP compatible, Zero Voltage Switching (ZVS), Voltage Mode 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). The purpose of this demonstration system is to simplify the evaluation process of wireless power technology using eGaN® FETs.The EPC9112 wireless power system comprises the three boards (shown in Figure 1) namely:1) A Source Board (Transmitter or Power Amplifier) EPC95072) A Class 3 A4WP compliant Source Coil (Transmit Coil)3) A Category 3 A4WP compliant Device Coil with rectifier and DC smoothing capacitor. The amplifier board features the EPC2007C and EPC2038 enhancement mode field effect transistors (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. This revision of the wireless demonstration amplifier includes a synchronous bootstrap FET supply for the upper FETs of the ZVS class-D amplifier that eliminates the reverse recovery losses of the gate driver’s internal bootstrap diode that dissipates energy in the upper FET. This circuit has been implemented using the new EPC2038 eGaN FET specifically designed for this function. To learn more about the synchronous bootstrap supply please refer to the following [1, 2, 3]. The EPC9507 amplifier board can also be operated using an external oscillator or by using the included new ultra low power Diashinku 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.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.

Products

Order Code Data­sheet Downloads Product seriesPitch
(mm)
MountIR 1
(A)
Working Voltage
(V (AC))
PCB/Cable/PanelContact Resistance
(mΩ)
Tol. RL
(mm)
H
(mm)
L
(µH)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersionTol. LTest Condition LQmin.Test Condition QRDC max.
(mΩ)
PinsRowsGenderTypeIR
(A)
PackagingColor Samples
60900213421
STE 3D IGSWR-PHD 2.54 mm Multi-Jumper Jumper with Test Point 2.54 250 20 max. 2.44 1 Jumper 3 Bag Black
61300111121
IGE STE 3D ALT EAG CADWR-PHD 2.54 mm THT Pin Header 2.54 THT 250 20 max. 2.54 1 Single Pin Header Straight 3 Bag
61300211121
IGE STE 3D ALT EAG CADWR-PHD 2.54 mm THT Pin Header 2.54 THT 250 20 max. 5.08 2 Single Pin Header Straight 3 Bag
61300311121
IGE STE 3D ALT EAG CADWR-PHD 2.54 mm THT Pin Header 2.54 THT 250 20 max. 7.62 3 Single Pin Header Straight 3 Bag
645002114822
IGE STE 3D ALT EAG CADWR-WTB 3.96 mm Male Vertical Locking Header 3.96 THT 7 250 PCB 20 max. 7.92 2 Male Vertical 7 Bag White
744314101
STE ALT EAG CAD LTS PSP SPE IGS CADWE-HCI SMT Flat Wire High Current Inductor SMT 7 4.8 10 7.5 4 33 40 Superflux SMT ±20% 100 kHz/ 100 mV 36.3 2 3.5
744912182
STE ALT EAG CAD LTS PSP IGS CAD SPAWE-CAIR Air Coil SMT 4.83 4.2 0.082 1300 ±5% 150 MHz 100 150 MHz 9.4 2.5
Samples
Order Code Data­sheet Downloads Product seriesPitch
(mm)
MountIR 1
(A)
Working Voltage
(V (AC))
PCB/Cable/PanelContact Resistance
(mΩ)
Tol. RL
(mm)
H
(mm)
L
(µH)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersionTol. LTest Condition LQmin.Test Condition QRDC max.
(mΩ)
PinsRowsGenderTypeIR
(A)
PackagingColor Samples