openlayer extend to google bounds

Could you please help me to convert openlayer extend to google bounds. I want to geocode from address in my map area so i do this :

 var epsg4326 = new OpenLayers.Projection("EPSG:4326");
    var epsg3943 = new OpenLayers.Projection("EPSG:3943");

    var geocoder = new google.maps.Geocoder();
    var address = document.getElementById("geocodeAddress").value;
    popupGeo.destroy();
    //var convertedBounds = map.maxExtent.transform(epsg3943, epsg4326);
    var northEast = new OpenLayers.LonLat(map.maxExtent.right,map.maxExtent.top);
    var southWest = new OpenLayers.LonLat(map.maxExtent.left, map.maxExtent.bottom);

    var convertedNorthEast = new northEast.transform(epsg3943, epsg4326 );
    var convertedSouthWest = new southWest.transform(epsg3943, epsg4326 );
    //var googleBounds = new google.maps.LatLngBounds(
    //    new google.maps.LatLng(convertedBounds.bottom, convertedBounds.left),
    //    new google.maps.LatLng(convertedBounds.top, convertedBounds.right));
    var googleBounds = new google.maps.LatLngBounds(convertedSouthWest, convertedNorthEast);
    geocoder.geocode({ 'address': address, 'bounds': googleBounds }, function (results, status) {

but i get an error Phi2z no convergence when i try to convert openlayer corners to google epsg4326