Description
Overview of this Hi-link B1203S-1WR3H isolated dc converter
Features
| Specification | Value |
|---|---|
| Input Voltage Range | 11.4V – 12.6V |
| Output Voltage | 3V |
| Output Current | 333mA |
| Output Power | 1W |
| Isolation Voltage | 1500VDC |
| Efficiency | Upto 88% (Typical) |
| Operating Temperature Range | -40°C to +85°C |
| Storage Temperature Range | -55°C to +125°C |
| Package Type | SIP (Single In-line Package) |
| Dimensions | 11.6mm x 7.5mm x 10.0mm |
| Weight | 25 grams |
| Input-Output Isolation | 3kVDC |
| Short Circuit Protection | Yes |
| Overload Protection | Yes |
| Certification | CE, RoHS |
| SKU | RW-DC104 |
Main use of this 12V to 3V 1W 333mA Hi-link isolated dc converter
Environment Condition for Hlk-B1203S-1WR3H DC-DC Power Module
| Project name | Qualification | Unit | Notes |
| Working enviroment temperature | -40—+85 | ℃ | |
| Storage temperture | -40—+80 ℃ | ℃ | |
| Relative humidity | 5—95 | % | |
| Heat dissipation mode | natural cooling | ||
| Atmospheric pressure | 80—106 Kpa | Kpa | |
| Vibrate | Vibration coefficient 10~500Hz,2G10min./1cycle, 60min.each along X,Y,Z axes | Meet the requirements of secondary road transportation |
Input Characteristics of Hlk-B1203S-1WR3H DC-DC Power Module
| Items | Working conditions | Unit | Notes |
| Related input voltage | 12 | Vdc | |
| Input voltage range | 10.8-13.2 | Vdc | |
| Maximum input current | ≤0.2 | A | |
| Reflection ripple current | 15 | mA | DC12V rated input
voltage series |
| Impulse voltage | ≤18 | Vdc | |
| Starting voltage | 10.8 | Vdc | |
| Input under voltage protection | — | Vdc | |
| Start delay time | — | Vdc | Reted input voltage and constant resistance load |
| Input filter type | Capacitive filtering | ||
| Hot plug | Non-support | ||
Output Characteristics of Hlk-B1203S-1WR3H DC-DC Power Module (3.3V/303mA)
| Items | Technical parameters | Unit | Notes |
| No-load rated output voltage Vdc | 3.3V±15% | Vdc | |
| Short time maximum output current | ≥313 | mA | |
| Rated output current | 303 | mA | |
| Voltage regulation | ±1.5 | % | |
| Load regulation | ±12 | % | |
| Conversion efficiency | Vin=3.3Vdc, Output full load 80 | % | |
| Output ripple and noise(m Vp-p) | ≤100 Pure resistive load, 20MHz bandwith, peak to peak value | mV | |
| Output over-voltage protection | Output 110-160% of the maximum voltage | Vdc | |
| Insulation voltage | Input-output, test time 1 minute, leakage current less than 1mA/1500V | ||
| Insulation resistance | Input-output, insulation voltage 500VDC/1000MΩ | MΩ | |
| Isolated capacitor | Input-output,100KHz/0.1V 20pF |
Typical Application Circuits
EMC parameter recommendation for Hlk-B1203S-1WR3H DC-DC Power Module
| Component No. | Function | Recommended value |
|  Cin Capacitance | Filter capacitor | 4.7μA/50V |
| Cout Capacitance | Filter capacitor | 2.2-10μA/50V |
| Lin inductance | Filter inductance | Inductance: 4.7uH |
| Lout inductance | Cin Capacitance | Inductance: 4.7uH |
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