John-Joe O’Toole’s early opener was quickly cancelled out by Alex Gilbey but Chris Long ensured the Cobblers moved up to 18th place and were replaced by Dons in the bottom four.
O’Toole latched onto Joe Bunney’s low cross to squirm a shot past visiting goalkeeper Lee Nicholls and hand Northampton a 16th-minute lead.
Their advantage was short lived and only three minutes had passed when Dons restored parity as Osman Sow flashed the ball across goal and Gilbey rifled home first time.
Sow then had a header cleared off the line but the away side were behind again when Long was positioned perfectly to divert Sam Hoskins’ low cross into the bottom corner four minutes before half-time.
Burton midfielder Martin Samuelsen will use the international break to recover from illness after pulling out of Norway U21's games.
Jonas Lossl is staying 'optimistic' over Huddersfield's chances of survival this season and has urged his team-mates to 'go for it'.