25DMOW GAPTEC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 6

Technical content

GAPTEC-Electronic GmbH & Co. KG sales@gaptec-electronic.com – www.gaptec-electronic.com Page 1 of 6 25DMOW_1.5 – Rev. 2020-1.0 Specifications subject to change without notice. 25DMOW_1.5 series 25W - Single Output - Wide Input - Isolated & Regulated DC-DC Converter DC-DC Converter 25 Watt The 25DMOW_1.5 series are isolated 25W DC/DC converters with 2:1 input voltage. They feature efficiency up to 88%, 1500VDC isolation, operating temperature of -40°C to +85°C, input under-voltage protec - tion, output over-voltage, output over-current, output short circuit protection and meets IEC60950-1. They are widely applied in optical networking equipment, wireless base stations, microwave radio communications, telecom and data equip - ment applications. Common specifications Short circuit protection: Hiccup, continuous, self-recovery Cooling: Free air convection Operation temperature range: -40°C~+85°C Storage temperature range: -55°C~+125°C Storage humidity range: 90% MAX Thermal stability time: 30mins FIT: 312.5; 109/MTBF Vibration: IEC60068-2-6: 10~500Hz sweep, 0.75mm excursion, 10g acceleration, 10minutes in each 3 perpendicular directions Shock: IEC 60068-2-27:200g acceleration, dura- tion 3ms, 6 drops in each 3 perpendicu- lar directions Safety: Compliant to IEC60950-1, UL60950-1, EN60950-1 and GB4943 Switching frequency: 450KHz TYP, fixed frequency Transportation: ETS300019-1-2 MTBF (Telcordia SR332, ground fixed, 40°C): 3,200,000 hours Weight: 6.5g Output specifications Item Test condition Min Typ Max Units Voltage set point 25°C, Io=Io (max) 4.95 5 5.05 V Line regulation* Vin(min to Vin(max) Io= Io(max), Vo=Vo(nom) ±0.1 %Vo Load regulation* Vin=Vin(nom) Io=0 to Io (max) ±0.125 %Vo Voltage precision At 50% load ±1 %Vo Voltage adjust- ment range -20 10 %Vo Remote sense Vsense = Vout - Vload, sense connected at load 10 %Vo Current Limit 5.5 7.5 A External load capacitance Full resistive load, low ESR 0 2200 µF Temperature coefficient At all outputs 200 ppm/°C Dynamic response recovery time 25%-50%-25%,50%- 75%-50% Io(nom) 100 200 µS Dynamic response 50%-75%-50%,di/ dt=2.5A/µS

  • Recovery time
  • Overshoot ±150 µs mV Ripple and noise** 50 mVp-p Turn-on delay time Time from instant at which Vin=Vin (Turn- on) until Vo=10% of Vo (nom) 10 50 ms Turn-on rise time Time for Vo to rise from 10% of Vo (nom) to 90% of Vo (nom) 10 50 ms * Regulation specifications describe the deviation as the input line voltage or output load current is varied from a nominal midpoint value to either extreme (50% load). ** Output noise may be further reduced by installing an external filter. See Ripple&Noise test setup. Use only as much output filtering as needed and no more. Larger caps (especially low-ESR ceramic types) may slow transient response or degrade dynamic performance. Thoroughly test your application with all components installed. Wide 2:1 input voltage range High efficiency up to 88% Short circuit protection (SCP) Isolation voltage: 1.5kVDC Over-current, over-voltage, over-temperature protection Input under-voltage lockout RoHS compliant Operating temperature range: -40°C to +85°C Fixed switching frequency Remote on/off negative logic International standard pin-out Monotonic startup into pre-biased loads Adjustable output voltage range IEC/UL/EN60950-1 approved Example: 25DMOW_4805S1.5 25 = 25Watt; D = DIP; M = Miniature; O = Open frame; W = wide input (2:1); 36-75Vin; 5Vout; S = single output; 1.5 = 1500VDC Protection specifications Item Test condition Min Typ Max Units Input under voltage lockout
  • Turn-on
  • Turn-off
  • Hysteresis V V V Short circuit current Hiccup 0.3 A Over current protection Hiccup mode, automatic recovery yes Over voltage protection Under the converter’s maximum allowable output power. Hiccup mode, minimum load of 20%Io max 6 7.2 V Over temperature protection Automatic recovery See OTP section 115 °C Over Temperature Protection Hysteresis Automatic recovery See OTP section 5 °C UL-60950-1 (E347551) Remote control specifications Item Test condition Min Typ Max Units Logic low voltage -0.7 1.2 V Logic high voltage 2.4 14 V Control current 1 mA

GAPTEC-Electronic GmbH & Co. KG sales@gaptec-electronic.com – www.gaptec-electronic.com Page 2 of 6 25DMOW_1.5 – Rev. 2020-1.0 Specifications subject to change without notice. 25DMOW_1.5 series 25W - Single Output - Wide Input - Isolated & Regulated DC-DC Converter Typical characteristics Isolation specifications Item Test condition Min Typ Max Units Isolation voltage* Input/output 1500 VDC Isolation resistance** Test at 500VDC 10 MΩ Isolation capacitance 2200 pF * Test duration 1 minute, leak current lower than 10mA ** The isolation resistance of input to output is no less than 10MΩ Input specifications Item Test condition Min Typ Max Units Operating input voltage 36 48 75 V Max. input current 100% load Vin= Vin (min) to Vin (max) 0.9 A Input current no load, full input 45 75 mA Short circuit input current 50 mA Reflected ripple current peak-to-peak 15 mA Inrush transient Vin=48V 0.05 A2S Input fuse Fast blow 2 A Dynamic Response Vin=48V/Vo=5V,50%-75%-50%load,2.5A/µs @25°C Output ripple & noise @25°C(Vin=48V/Io=5A,20MHz bandwidth) Efficiency Converter Efficiency Vs. Output Current Derating Available load current vs. ambient temperature and airflow for the module mounted horizontally Part Number Input Voltage [VDC] Nominal Range Max Output Voltage [VDC] Output Current [A, max] Efficiency [%, Min./Typ.] Capacitive load [µF, Max.] 25DMOW_4805S1.5 5 36-75 80 5 5000 86/88 1000 Product Selection Guide

GAPTEC-Electronic GmbH & Co. KG sales@gaptec-electronic.com – www.gaptec-electronic.com Page 3 of 6 25DMOW_1.5 – Rev. 2020-1.0 Specifications subject to change without notice. 25DMOW_1.5 series 25W - Single Output - Wide Input - Isolated & Regulated DC-DC Converter Typical characteristics Start-up Typical Start-up @25°C(Vin=48V/Io=5A) Start-up Typical Start-up @25°C(Vin=48V/Io=0A) Test configurations Measure input reflected ripple current with a simulated source inductance of 12µH. The measurement points for input reflected ripple current is showed above. Scope measurements should be made using a BNC socket, with 220µF Tantalum capacitor and 2*47µF ceramic capacitor. Position the oscilloscope between 51mm and 76mm (2 inch and 3 inch) from the module. Input Reflected Ripple Current Test Setup Output Ripple and Noise Test Setup

GAPTEC-Electronic GmbH & Co. KG sales@gaptec-electronic.com – www.gaptec-electronic.com Page 4 of 6 25DMOW_1.5 – Rev. 2020-1.0 Specifications subject to change without notice. 25DMOW_1.5 series 25W - Single Output - Wide Input - Isolated & Regulated DC-DC Converter Remote on/off Remote sense Output voltage programming The REM pin is used to turn the power converter remote on or off via a system signal. This power module is negative logic version. When the REM pin is at logic low the power turns on and turns off at logic high. We also provide positive logic remote On/Off, turns the module on during logic high voltage and off during a logic low. To turn the power module on and off, the user must supply a switch to control the voltage between the REM pin and -Vin terminal (see Figure on the left). A logic low is VREM =-0.7V to 1.2V. During logic high, the maximum VREM voltage genera- ted by the power module is 15V. If not using the remote on/off feature, perform one of the following to turn the converter on: For negative logic, short REM pin to -Vin. For positive logic, leave REM pin open. Remote sense minimizes the effects of distribution losses by regulating the voltage at the remote sense connections (see figure on the left). The voltage between the remote sense pins and the output terminals must not exceed the output voltage sense range (<10% Vo(nom)). The voltage between the +VO1 and GND terminals must not exceed the minimum output overvoltage protection value shown in the Electrical Specifications table. This limit includes any increase in voltage due to remote sense compensation and output voltage programming (trim). If not using the remote sense feature to regulate the output at the point of load, then connect +S to +VO1 and -S to GND. Output voltage trim allows the user to increase or decrease the output voltage set point of a module. This is accomplished by connecting an external resistor between the TRIM pin and either the +S or -S pins. If not using the trim feature, leave the TRIM pin open. To increase the output voltage, refer to the figure on the left. A trim resistor, Rtrimup, is connected between the TRIM and +S. Circuit configuration to increase output voltage Circuit configuration for remote sense Remote On/Off Implementation

GAPTEC-Electronic GmbH & Co. KG sales@gaptec-electronic.com – www.gaptec-electronic.com Page 5 of 6 25DMOW_1.5 – Rev. 2020-1.0 Specifications subject to change without notice. 25DMOW_1.5 series 25W - Single Output - Wide Input - Isolated & Regulated DC-DC Converter Recommended reflow profile Output voltage programming Heat transfer via convection Over temperature protection Trimming beyond 110% of the rated output voltage is not an acceptable design practice, as this condition could cause unwanted triggering of the output overvoltage protection (OVP) circuit. When trimming up, care must be taken not to exceed the converter’s maximum allowable output power. To decrease the output voltage (see figure on the left), a trim resistor, Rtrimdown, should be connected between the TRIM and -S, with a value of Lead-free (Pb-free) solder processes For Pb-free solder processes, a pin temperature (TPIN) in excess of the sol- der melting temperature (TL, +217°C to +221°C for Sn/Ag/Cu solder alloys) for more than 30 seconds, and a peak temperature of +235°C on all solder joints is recommended to ensure a reliable solder joint. For Pb-free solder processes, the product is qualified for MSL 3 according to IPC/JEDEC standard J-STD-020C. During reflow, TP must not exceed +245°C at any time. Circuit configuration to decrease output voltage Recommended airflow direction Tref Temperature Measurement Location

GAPTEC-Electronic GmbH & Co. KG sales@gaptec-electronic.com – www.gaptec-electronic.com Page 6 of 6 25DMOW_1.5 – Rev. 2020-1.0 Specifications subject to change without notice. 25DMOW_1.5 series 25W - Single Output - Wide Input - Isolated & Regulated DC-DC Converter Recommended EMC application Mechanical dimensions Suggested configuration to meet the conducted emission limits of EN55022 Class B. Note: 1. The maximum capacitive loads offered were tested at input voltage range and full load. 2. Only typical model listed. Non-standard models will be different from the abo- ve, please contact us for more details. 3. All specifications are measured at TA = 25°C, humidity <75%, nominal input voltage and rated output load unless otherwise specified. 4. In this datasheet, all the test methods of indications are based on corporate standards. 5. We can provide product customization service, please contact our technicians directly for specific information. 6. Our products shall be classified according to ISO14001 and related environmen- tal laws and regulations, and shall be handled by qualified units. Note: Dimensions are in millimeters and (inches). Tolerances: Through hole mounting Recommended pad layout