REC20-483.4SZ RECOM POWER

6-Side Shielding External ON/OFF control Features 1.6kVDC Isolation DC/DC Converter UL/CSA/EN-60950-1 Certified Wide 4:1 Input Voltage Range Regulated Continuous Short Circuit Protection Efficiency up to 91% Converters REC20-Z Fixed Switching Frequency Description 20 Watt The REC20-xxxxS DZ -series offer single and dual regulated outputs in a 2x1 package with 1.6kVDC isolation and are suitable for higher power industrial applications. Remote on/off control is standard. 2 x 1 The higher current outputs have raised output voltages to compensate for track losses as standard. The converter is fully certified to UL/EN/IEC safety standards. Single and Dual Output Selection Guide Part Input Output Output Efficiency max. Capacitive Number Voltage Range Voltage Current typ. Load VDC VDC mA % F REC20-243.4SZ 9-36 3.4 5000 88 13000 REC20-245.1SZ 9-36 5.1 4000 90 9600 REC20-2412SZ 9-36 12 1667 89.5 1650 REC20-2415SZ 9-36 15 1333 90 1050 REC20-2405DZ 9-36 5 2000 87 4800 REC20-2412DZ 9-36 12 834 89 625 REC20-2415DZ 9-36 15 667 89 525 REC20-483.4SZ 18-75 3.4 5000 88 13000 REC20-485.1SZ 18-75 5.1 4000 90 9600 REC20-4812SZ 18-75 12 1667 89.5 1650 E224736 REC20-4815SZ 18-75 15 1333 90.5 1050 IEC/EN60950-1 Certified REC20-4805DZ 18-75 5 2000 87 4800 UL60950 Certified REC20-4812DZ 18-75 12 835 90 625 CSA C22.2 NO. 60950 Certified EN55022 Certified REC20-4815DZ 18-75 15 667 91 525 Model Numbering REC20- Z nom. Input Voltage Output Voltage Single or Dual Ordering Examples: REC20-4812SZ, Single Output, 18-75Vin (4:1) and 12Vout REC20-2412DZ, Dual Output, 9-36Vin (4:1) and 12Vout www.recom-power.com REV.: 3/2017 ECO-1REC20-Z DC/DC Converter Series Specifications (measured ta= 25C, nominal input voltage, full load and after warm up unless otherwise specified) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. nom. Vin= 24V 9VDC 36VDC Input Voltage Range nom. Vin= 48V 18VDC 75VDC 10ms Start/up Time DC-DC ON 9VDC nom. Vin= 24V DC-DC OFF 7.5VDC Under Voltage Lockout (UVLO) DC-DC ON 18VDC nom. Vin= 48V DC-DC OFF 16VDC Output Voltage Trimming see calculation below 10% DC-DC ON Open or 2.5V<Vr<12V CTRL ON/OFF DC-DC OFF Short or 0V<Vr<1.2V 300kHz Internal Operating Frequency Minimum Load 0% (1) Output Ripple and Noise 100mVp-p Notes: Note1: Ripple and Noise is measured with a 20MHz bandwidth and a 0.1F ceramic capacitor. Output Voltage Trimming Trim UP Trim DOWN +Vout +Vout R1 R1 Vout 3.4V 5.1V 12V 15V R1 R R1 R down down Trim R1 4.71 k 2.3 k 19.43 kTrim 25.6 k Vref Vref Trim Trim Vref Vref R2 2.7 k 2.2 k 5.1 k R3 R3 R3 R3 R3 15 k 9.1 k 36 k R R R2 up R2 up R2 R2 Vref 1.24 V 2.5 V -Vout -Vout Trim Calculation DVout = Vout - Vout Vout = nom. output voltage trimmed DVout = output voltage trim R = trim up resistor a*R2 Vref up R = q r - R3 = k a = q r * R1 = k up R = trim down resistor (Vout + DVout) - Vref R2 - a down a = trim up factor b = trim down factor b*R1 (Vout + DVout) - Vref R = q r - R3 = k b = q r * R2 = k down R1 - b Vref Trim Up: Vout = 5.1V, DVout = 0.51V (10%), Vref= 2.5V 2.5V 1.843k * 2.2k a = q r * 2.3k = 1.843k R = q r - 9.1k = 2.255k up (5.1V + 0.51V) - 2.5V k k 2.2 - 1.843 Trim down: Vout = 5.1V, DVout = -0.51V (-10%), Vref= 2.5V 5.1V + (-0.51V) - 2.5V 1.839k * 2.3k b = q r * 2.2k = 1.839k R = q r - 9.1k = 0.080k down 2.5V 2.3k - 1.839 continued on next page ECO-2 REV.: 3/2017 www.recom-power.com