48V to 12V2.5A 30W DC to DC isolated transfer input power supply module URB4812LD-30WR3
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Buycount：
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Price$7.87
Product Feature
UR(A)B_LD-30WR3 series product output power is 30W，4:1 wide voltage input range，efficiency up to 91%，conversional isolation volatge of 1500VDC，allowable operating temperature is -40℃to+85℃，
with input under-voltage protection, output over-voltage, over-current,short-circuit protection function, bare metal meets CISPR32/EN55032CLASSA ， widely used in medical, industrial control, electri power, instrumentation,communication, railway and other fields.
Wide input voltage range(4:1),Output 30W
Conversion efficiency91%(Typ)
Isolation voltage 1500Vdc
Ultra low power consumption:0.036W(Typ）
Fast startup:1ms(Typ)
Working temperature range：-40°C~+85℃
Input undervoltage ， output short circuit ， overcurrent，overvolatge protection
Metal case,low output ripple
International standard pins,PCB board in-line
Enviroment Condition
| 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
| Project name | Working conditions | Unit | Notes |
| Related input voltage | 48 | Vdc | |
| Input voltage range | 18-75 | Vdc | |
| Maximum input current | ≤1.45 | A | |
| Reflected ripple | Nominal input voltage 40 | mA | DC 5V rated input voltage series |
| Impulse voltage | ≤100 | Vdc | |
| Starting voltage | 18 | Vdc | |
| Input undervoltage protection | 12-15.5 | Vdc | |
| Start-up delay | 1 | ms | Rated input voltage and constant resistance load |
| Input filter type | PI version | ||
| Hot plugged | Non-support | ||
Output Characteristics(5V/6000mA)
| Project name | Technical requirement | Unit | Notes |
| No load rated output voltage | 5V±2% | Vdc | |
| Short-time maximum output current | ≥6000 | mA | |
| Rated output current | 5900 | mA | |
| Voltage regulation | ±0.5 | % | |
| Load regulation | ±0.5 | % | |
| Transfer efficiency | Vin=5Vdc, output full load 90 | % | |
| Output ripple and noise (mVp-p) | Pure resistive load, 20MHz bandwidth, peak to peak | mV | |
| Output over-current protection | the maximum load 110-200% | Vdc | |
| Insulation voltage | Input- output, test in 1 minute, leakage current less than 1mA/1500V | - | |
| Insulation resisitance | Input- output, insulation volaltge 500VDC/1000MΩ | MΩ | |
| Isolation capacitance | Input- output, 100KHz/0.1V 1000pF | - |
Note:
(1) For product model with output voltage ±5VDC or ±9VDC , the maximum output voltage accuracy is ±5% under 0% - 5% load condition
(2) When tested according to the 0%-00% load working condition, the load adjustment rate is ±5%
(3) 0%-5% load ripple & noise less than or equal to 5% Vo. Ripple and noise test method, Twisted pair test method, can add capacitive load at the output to reduce light load ripple
Typical Application Circuits
EMC parameter recommendation
| Component No. | 24V Input Product | 48V Input Product | 110V Input Product |
| FMSE Fuse | Access the corresponding fuse accrding to customer needs | ||
| MOV/Varistor | 14D560K | 14D101K | 14D201K |
| LDM1/Common mode inductance | 10mH | 15mH | 30mH |
| CO,C1 Ceramic capacitors | 100μF/50V | 100μF/100V | 100μF/200V |
| E1,E2 Electrolytic capacitor | 1μF/50V | 1μF/100V | 0.47μF/250V |
| LDM2/Differential mode inductance | 10μH | 15μH | 68μH |
| CY1/Y2 Capacitance | 1nF/250vAC | ||
Notes：
* Fuses and varistors are basic parts of protection circuits (required).
* If the certification is required, the safety capacitor and common mode inductance cannot be omitted.
