Vincent Janssen hit four goals, including two penalties, as AZ Alkmaar hammered PEC Zwolle 5-1.
The victory kept up AZ's challenge for a place in European competition next season as they climbed into fourth spot, six points behind third-placed Feyenoord.
Janssen, who won his first cap for the Dutch national team last month, is the league's top scorer with 25 goals.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
De Jong netted for PSV in the 10th minute with a close-range header and added a second after halftime, his 22nd league goal of the season. Davy Proepper made it 3-0 in the 81st minute as PSV moved on to 75 points, one more than second-placed Ajax Amsterdam who play their game in hand at home to Utrecht on Sunday.
Feyenoord have 56 points, with three games to go, after a 1-1 home draw with Groningen.
Tonny Vilhena equalised for the hosts after Michael de Leeuw had opened the scoring for Groningen.
Heracles Almelo dropped to sixth after drawing 1-1 at Vitesse Arnhem.
Wout Weghorst equalised with a late penalty after Milot Rashica had been on target for Vitesse just after halftime.
(Reporting by Mark Gleeson; Editing by Tony Jimenez; mark.gleeson@thomsonreuters.com; +27828257807; Reuters Messaging: Reuters Messaging: mark.gleeson.thomsonreuters.com@reuters.net)
