Microprocessor controlled 12V lead acid, SLA, VRLA charging board with wide input voltage

Lead-acid charge board with wide range of input voltages

Home: Custom battery chargers, custom power supplies, custom battery packs

Custom design and manufacture of state-of-the-art battery chargers, UPS, and power supplies for OEMs in a hurry?

This is a microprocessor controlled SEPIC topology DC/DC converter programmed to perform as a battery charger.

Theory of Operation:
When input voltage is applied the following operations proceed.

1. The processor Initializes
2. All 3 LEDs come on for 1 second in self-test
3. The power Red LED turns on
4. The processor waits briefly until the output has a voltage greater than 1.0V
5. The processor then turns on the PWM with current set to high (about 1.7Amps)
6. The Yellow LED turns on indicating charging.
7. When the battery is charged to 13.65V the Green LED turns on to to indicate a full battery.
8. The battery continues to trickle charge (about 20mA) to balance and maintain the battery.

Can be used as a solar charge controller
Can use locally to the battery to boost voltage after a long wire run, for example on POE.
Output voltage can be higher or lower than the input voltage.

Form factor and custom features can be redesigned to OEM requirements.

PST-SEP12V-CH
Input voltage	8-30 volts nominal, higher range possible
Output Voltage:	12 volts nominal, pulsed charge algorithm
Output Power	23 watts peak
Termination method	Voltage sense, terminates to 20 mA trickle charge
Form	Circuit board product, frame or case developed on request
Dimensions	4" x 1.8" x 0.5" (10 cm x 4.6 cm x 2 cm) or smaller, depending on power requirements
Weight	1.2 oz, 34 grams

Prices:

Quantity	Price
1-49	$80.00
50-99	$75.00
100-199	$63.30
200+	$61.00

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