Standalone driver can be buy from Taobao, just buy the correct wattage. I changed my existing driver to remote control type. Have not check locally, but most likely it can be bought at Balestier Road light shop or Sim Lim Square.
Buying from Taobao better becareful. Not only price varies. Quality too. So watch carefully the following points.
1. Isolated or non isolated. Non isolated means your electrical live circuit is pass thru from input to LED board. So do not touch LED board when it is power on.
2. Fused or not fused. This is additional protection to your LED light or incase anything wrong. It should not tripped your house circuit breaker.
Other then this. Check those components used. Some driver use very small transformer and is very hot when LED light is on.
Bad quality
https://www.dropbox.com/s/wewcpy07cyezqie/20170115_143936.jpg?dl=0
Not bad
https://www.dropbox.com/s/apyi97rro7vgzlg/20170115_144211.jpg?dl=0
With fuse protection
https://www.dropbox.com/s/4l9uynkf888s3b4/20170115_144324.jpg?dl=0