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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 close 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.
| Quantity |
Price |
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| 1-49 |
$80.00 |
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| 50-99 |
$75.00 |
|
| 100-199 |
$63.30 |
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| 200+ |
$61.00 |
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| 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 |
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| J1 |
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Faston |
Positive input |
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| J2 |
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Faston |
Negative input |
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| J3 |
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Pin1 |
Negative out |
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Pin2 |
Positive out to battery |
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Pin3 |
N/C |
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Pin4 |
negative to green LED |
(needs a 1K resistor in series) |
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Pin5 |
negative to yellow LED |
(needs a 1K resistor in series) |
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Pin6 |
negative to red LED |
(needs a 1K resistor in series) |
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Pin7 |
+5V for LED return |
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| J4 |
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Pin1 |
RX |
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Pin2 |
TX |
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| J5 |
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Pin1 |
MCLR |
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Pin2 |
VDD |
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Pin3 |
NEG |
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Pin4 |
DAT |
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Pin5 |
CLK |
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