Overview
The DCDC18R Boost Regulator accepts an 11 to 16 Vdc input and boosts it to 18 Vdc, allowing a vehicle to recharge CR3000, CR5000, or CR23X sealed rechargeable batteries. The DCDC18R conveniently attaches to the side of the sealed rechargeable base next to the charger input.
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Detailed Description
Supply voltage from the vehicle is connected to the DCDC18R's Vin terminals. Regulated voltage to charge the data logger’s sealed rechargeable power supply are sourced from the Vout terminals.
Maximum Input Current
The boost regulator implements a soft-start circuit and typically starts regulating for input voltages greater than 10 V. Supply voltages below 10 V pass directly to Vout (through two Schottky diodes dropping the voltage by ~0.6 V). With the DCDC18R operating at the maximum output current (18 V * 1 A = 18 W), the input power required is up to 18 W / 0.8 efficiency = 22.5 W; that is a maximum current of 2.25 A at 10 V.
Specifications
| Maximum Input Current | 2.25 A |
| Input Voltage | 11 to 16 Vdc |
| Output Voltage | 18 Vdc ±5% |
| Quiescent Current | 4 mA |
| Output Current | up to 1.0 A |
| Power Conversion Efficiency | 80 to 90% |
| Operating Temperature Range | -40° to +60°C |
| Dimensions | 6.4 x 8.6 x 2.8 cm (2.5 x 3.4 x 1.1 in.) |
| Weight | 91 g (3 oz) |
Compatibility
Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
Data Loggers
| Product | Compatible | Note |
|---|---|---|
| 21X (retired) | ||
| CR10 (retired) | ||
| CR1000 (retired) | ||
| CR10X (retired) | ||
| CR200 (retired) | ||
| CR205 (retired) | ||
| CR205 (retired) | ||
| CR206 (retired) | ||
| CR210 (retired) | ||
| CR211 (retired) | ||
| CR215 (retired) | ||
| CR216 (retired) | ||
| CR23X (retired) | ||
| CR295 (retired) | ||
| CR3000 (retired) | ||
| CR500 (retired) | ||
| CR5000 (retired) | ||
| CR510 (retired) | ||
| CR800 (retired) | ||
| CR850 (retired) | ||
| CR9000 (retired) | ||
| CR9000X (retired) |
Mounting Equipment
| Product | Compatible | Note |
|---|---|---|
| ENC10/12 | ||
| ENC10/12R | ||
| ENC12/14 | ||
| ENC14/16 | ||
| ENC16/18 | ||
| ENC24/30 | ||
| ENC24/30S |
Additional Compatibility Information
Enclosure Considerations
A desiccated, non-condensing environment is required. The DCDC18R includes built-in keyhole flanges for mounting to the backplate of a Campbell Scientific enclosure.
Documents
Brochures
Manuals
Technical Papers
Frequently Asked Questions
Number of FAQs related to DCDC18R: 1
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The CR3000 rechargeable lead-acid battery base requires more than 16 Vdc to properly charge the batteries. The DCDC18R Boost Regulator was designed for this purpose. Failure to use the DCDC18R with the lead-acid rechargeable battery base will result in permanently damaged batteries. (The batteries will remain below deep-discharge levels.)
The CR3000 internal lead-acid batteries are used whenever the car battery is too low to power the data logger (less than 11 V). For example, when the engine is turned off or during start-up when the vehicle battery voltage drops due to starter current demands.
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