Design Example: Multi-output Battery Backup Power Supply Board
|This universal input (90-280 VAC, 50/60 Hz) power
supply board has 12 VDC, 5 VDC, 3.3 VDC, and 2.5VDC outputs, and charges a 12 volt lead acid
battery which automatically switches in when the AC power is removed.
This is an expample of a custom product that we have developed. The last production run was in 2004, some of the components are now obsolete, so it cannot be manufactured according to the current design.
Custom design and manufacture of state-of-the-art battery chargers, UPS, and power supplies for OEMs in a hurry!
. Model : PST-DCUPS-30 Multiple output AC input DC power supply with battery backup, a DC UPS board level product.
input +5 VDC at 1 amp +3.3 VDC at 3 amps. Also available from this board are 2.5 VDC at 1.2 Amps +12 VDC at 1 amp, AC failed signal--A TTL signal indicating that the AC power is down. Battery bad alarm--A TTL signal indicating that the battery should be replaced. External power down signal--shuts everything down but +12 VDC when activated by an external TTL signal. Also turns the supply on with a TTL signal. Size of board: 5 x 7.75 x 1.75 inches. the 1.75 inches can be negotiated down to 1.32 if necessary. Size of battery: The Hawker Cyclone 8 AH 12 Volt pack is 5.25 x 3.68 x 4.19 inches, and weighs 6.75 kg.
Inexpensive switchmode AC switching power supply AC/ DC converter.
Inexpensive fully regulated power supply with IEC input and