The 331A3-24×28-SD by Demke Electronic is a functionally isolated DC/DC buck-boost converter for a nominal input voltage of 24 VDC. It operates across an input voltage range of 9 to 36 VDC and delivers 24 VDC at up to 1.20 A, equivalent to 30 W of output power. Efficiency reaches up to92% at nominal input voltage and full load.
| Input voltage Vin | 9…36 VDC |
|---|---|
| Nominal input voltage | 24 VDC |
| Peak input voltage | 38 VDC |
| Max. input current | 4 A |
| Recommended input fuse | 5 A |
| Output voltage Vout | 24 VDC |
| Output current Iout | 1.2 A |
| Output power Pout | 30 W |
| Efficiency | up to 92 % |
| Output configuration | Unipolar |
| Isolation | Functionally isolated |
| Insulation strength primary to secondary | 500 VDC |
| Insulation strength primary to case | 500 VDC |
| EMI filter | Input and output |
| Switching frequency | 225 kHz |
| Max. capacitive load | Unlimited |
| Control function | SD & SH |
| Shutdown voltage | -0.2…2.8 VDC |
| Switch-high voltage | -0.2…0.2 VDC |
| Dimensions | 50.8 × 50.8 × 10.16 mm |
|---|---|
| Weight | 60 g |
| Mounting | PCB mounting |
| Connection type | Solder pins |
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