1992 Honda Accord engine dies at stoplights

Car starts and runs great, but when you put on the brakes the rpm's go below 1000 then 500,200 then dead. Itstarts right back up and away you go until the next stop.I thought vacume break booster leak, so I was driving down the road at 35mph with a stop about 300 ft, put the trans in neutral and maintained 3000 rpm and came to the stop using only the parking break, (don't try this at home) the enjine still died. The car idles fine but seems to hate braking pressure, its a 92, its not that smart!