PRF-1150 13.56MHz 1kW Class E RF Generator

Doc #9200-0255 Rev 1

 2002 Directed Energy, Inc.

1

INTRODUCTION

DEI has developed an RF module to demonstrate the capabilities of our DEIC420 RF

MOSFET gate driver IC and DE275-102N06X2A 1000V 6A RF MOSFET at ISM

frequencies. The PRF-1150 module produces 1000W CW of RF output at 13.56MHz.

with 85% DC to RF conversion efficiency. The module is a self-contained RF generator.

To produce 1kW of RF output, only external DC power need be applied. The module

dimensions as shown in Figure 1 are 6.75” x 3.1” x 2.7” including an air-cooled heatsink

and copper heat-spreader. Impingement flow from a standard 4.5” bench fan provides

adequate cooling for the 1kW output level. Standard 0.1” dual and single row headers

are used for DC input to the module and a single right-angle BNC connector is used for

RF output to a 1kW 50

Ω RF load or attenuator.

Figure 1: PRF-1150 1KW RF Generator Module

MODULE DESCRIPTION

Please refer to Figures 1-6 during this module description. Low-Voltage DC is applied

to the module via connector J1. 5V @ 30 ma and 15V @ 3A are applied to J1 pins 4

and 2 respectively. LEDs D3 and D5 glow green if the appropriate voltages are applied.

U1 is a 13.56MHz clock providing a 50% DC, 0-5V square wave. U2A provides a pulse-

width adjustable source to drive U4, the DEIC420 gate driver IC.