dat date e 03/19/2013 page page 1 of 6 1 of 6 SERIES: PEM1-S │ DESCRIPTION: DC-DC CONVERTER FEATURES • 1 W isolated output • smaller package • single/dual unregulated output • 3,000 Vdc isolation • continuous short circuit protection • extended temperature range (-40~105°C) • antistatic protection up to 8kV • high efficiency at light load • efficiency up to 82% input output output output ripple efficiency MODEL 1 voltage voltage current power and noise typ range min max max typ typ (Vdc) (Vdc) (Vdc) (mA) (mA) (W) (mVp-p) (%) PEM1-S5-S5-S 5 4.5~5.5 5 20 200 1 30 80 PEM1-S5-S12-S 5 4.5~5.5 12 9 83 1 30 80 PEM1-S5-S15-S 5 4.5~5.5 15 7 67 1 60 81 PEM1-S5-S24-S 5 4.5~5.5 24 5 42 1 60 81 PEM1-S5-D5-S 5 4.5~5.5 ±5 ±10 ±100 1 30 80 PEM1-S5-D12-S 5 4.5~5.5 ±12 ±5 ±42 1 30 80 PEM1-S5-D15-S 5 4.5~5.5 ±15 ±4 ±33 1 60 81 PEM1-S5-D24-S 5 4.5~5.5 ±24 ±2 ±21 1 60 81 PEM1-S12-S5-S 12 10.8~13.2 5 20 200 1 30 80 PEM1-S12-S12-S 12 10.8~13.2 12 9 83 1 30 80 PEM1-S12-S15-S 12 10.8~13.2 15 7 67 1 60 81 PEM1-S12-D5-S 12 10.8~13.2 ±5 ±10 ±100 1 30 80 PEM1-S12-D12-S 12 10.8~13.2 ±12 ±5 ±42 1 30 81 PEM1-S12-D15-S 12 10.8~13.2 ±15 ±4 ±33 1 60 81 PEM1-S15-S5-S 15 13.5~16.5 5 20 200 1 30 80 PEM1-S15-S15-S 15 13.5~16.5 15 7 67 1 60 81 PEM1-S15-D5-S 15 13.5~16.5 ±5 ±10 ±100 1 30 80 PEM1-S15-D15-S 15 13.5~16.5 ±15 ±4 ±33 1 60 81 PEM1-S24-S5-S 24 21.6~26.4 5 20 200 1 30 79 PEM1-S24-S12-S 24 21.6~26.4 12 9 83 1 30 81 PEM1-S24-S15-S 24 21.6~26.4 15 7 67 1 60 82 PEM1-S24-D5-S 24 21.6~26.4 ±5 ±10 ±100 1 30 80 PEM1-S24-D12-S 24 21.6~26.4 ±12 ±5 ±42 1 30 81 PEM1-S24-D15-S 24 21.6~26.4 ±15 ±4 ±33 1 60 79 Notes: 1. ripple and noise are measured at 20 MHz BW by “parallel cable” method cui.com CUI Inc │ SERIES: PEM1-S │ DESCRIPTION: DC-DC CONVERTER date 03/19/2013 │ page 2 of 6 PART NUMBER KEY PEM1 - SXX - XXX -S Output Base Number Packaging Style Output Voltage Input Voltage S = single SIP D = dual INPUT parameter conditions/description min typ max units 5 V input models 4.5 5 5.5 Vdc 12 V input models 10.8 12 13.2 Vdc operating input voltage 15 V input models 13.5 15 16.5 Vdc 24 V input models 21.6 24 26.4 Vdc for maximum of 1 second 5 V input models -0.7 9 Vdc surge voltage 12 V input models -0.7 18 Vdc 15 V input models -0.7 21 Vdc 24 V input models -0.7 30 Vdc filter capacitance filter OUTPUT parameter conditions/description min typ max units line regulation for Vin change of 1% ±1.2 % load regulation measure from 10% load to full load 15 % voltage accuracy see tolerance envelope curve voltage balance dual output, balanced loads ±0.5 ±1 % switching frequency 100% load, nominal input voltage 100 300 kHz temperature coefficient 100% load ±0.03 %/°C PROTECTIONS parameter conditions/description min typ max units short circuit protection continuous, automatic recovery SAFETY AND COMPLIANCE parameter conditions/description min typ max units isolation voltage for 1 minute at 1 mA max. 3,000 Vdc isolation resistance at 500 Vdc 1,000 MΩ conducted emissions CISPR22/EN55022, class B (external circuit required) IEC/EN61000-4-2, class B, contact ± 8kV for single outputs ESD IEC/EN61000-4-2, class B, contact ± 6kV for dual outputs MTBF as per MIL-HDBK-217F @ 25°C 3,500,000 hours RoHS compliant yes ENVIRONMENTAL parameter conditions/description min typ max units operating temperature see derating curve -40 105 °C storage temperature -55 125 °C storage humidity non-condensing 95 % temperature rise at full load 25 °C cui.com CUI Inc │ SERIES: PEM1-S │ DESCRIPTION: DC-DC CONVERTER date 03/19/2013 │ page 3 of 6 SOLDERABILITY parameter conditions/description min typ max units hand soldering 1.5 mm from case for 10 seconds 300 °C wave soldering see wave soldering profile 260 °C Peak Temp. 260°C Max. Wave Soldering Time 250 4 Sec. Max. 200 10 Sec. Max. 150 100 50 0 Time (sec.) MECHANICAL parameter conditions/description min typ max units dimensions 19.50 x 6.00 x 9.00 (0.768 x 0.236 x 0.20 inch) mm case material epoxy resin (UL94-V0) weight 2.4 g MECHANICAL DRAWING units: mm[inch] tolerance: ±0.25[±0.010] pin section tolerance: ±0.10[±0.004] f >  f  @    f >f@  >@  >@ Front View >@ Bottom View Side View >@ ∅>@ PIN CONNECTIONS    PIN Single Output Dual Output 1 Vin Vin 2 GND GND  >@ 5 0V -Vo Grid Size: 2.54mm x 2.54mm  >@ 6 No Pin 0V PCB Layout 7 +Vo +Vo Top View cui.com f >f@ f >f@ Temperature (°C) f  >f@ >@ f >f@ f >f@ f >f@ f >f@ Typical Load Line CUI Inc │ SERIES: PEM1-S │ DESCRIPTION: DC-DC CONVERTER date 03/19/2013 │ page 4 of 6 DERATING CURVES Tolerance Envelope Curve Temperature Derating Curve 10 7.5 100 5 2.5 80 2.5 Rated Output Voltage 0 60 -2.5 -2.5 Safe operating area 40 -5 -7.5 -7.5 20 -10 10 20 30 40 50 60 70 80 90 100 Output Current Percentage (%) -40-20 0204060 85 105 120 (Nominal Input Voltage) Ambient Temperature (°C) EMC RECOMMENDED CIRCUIT LDM Recommended external circuit components Vin Vin +Vo Vin C1 LDM C2 (Vdc) EUT LOAD C1 5 4.7μF/50V 6.8μH NC 12 4.7μF/50V 6.8μH NC GND GND -Vo (0V) 15 4.7μF/50V 6.8μH 470pF/3kV 24 4.7μF/50V 6.8μH 470pF/3kV C2 TEST CONFIGURATION Oscilloscope Lin External components Lin 4.7μH Current Probe Load Cin DC DC 220μF, ESR < 1.0Ω Cin at 100 KHz Lin(4.7μH) Cin(220μF, ESR< 1.0Ω at 100KHz) Note: Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance. cui.com Output Voltage Accuracy (%) Load (%) CUI Inc │ SERIES: PEM1-S │ DESCRIPTION: DC-DC CONVERTER date 03/19/2013 │ page 5 of 6 APPLICATION NOTES 1. Output load requirement To ensure this module can operate efficiently and reliably, the minimum output load may not be less than 10% of the full load during operation. If the actual output power is low, connect a resistor at the output end in parallel to increase the load. 2. Overload Protection Under normal operating conditions, the output circuit of this product has no protection against overload. The simplest method to add this is to add a circuit breaker to the circuit. 3. Recommended circuit If you want to further decrease the input/output ripple, you can increase the capacitance accordingly or choose capacitors with low ESR (see Figure 1). However, the capacitance of the output filter capacitor must be appropriate. If the capacitance is too high, a startup problem might arise. For every channel of the output, to ensure safe and reliable operation, the maximum capacitance must be less than the maximum capacitive load (see Table 1). Single Output +Vo Vin Cout Cin DC DC GND 0V Figure 1 Dual Output +Vo Vin Cout 0V Cin DC DC Cout GND Vo Vin Cin Single Vo Cout Dual Vo Cout (Vdc) (µF) (Vdc) (µF) (Vdc) (µF) 5 4.7 5 10 ±5 4.7 Table 1 12 2.2 12 2.2 ±12 1 15 2.2 15 1 ±15 0.47 24 1 24 1 ±24 0.47 It’s not recommended to connect any external capacitors in applications with less than 0.5 watt output. 4. Output Voltage Regulation and Over-voltage Protection Circuit The device for output voltage regulation, over-voltage and over-current protection is a linear regulator and a capacitor filtering net- work with overheat protection which can be connected to the input or output end in series (see Figure 2). The recommended capaci- tance of its filter capacitor (see Table 1), and the linear regulator is based on the actual voltage and current required. SingleOutput REG +Vo Vin REG DC DC GND 0V Figure 2 DualOutput +Vo REG Vin REG 0V DC DC GND REG -Vo Note: 1. Operation under minimum load will not damage the converter; however, they may not meet all specifications listed. 2. Max. capacitive load tested at input voltage range and full load. 3. All specifications measured at: Ta=25°C, humidity<75%, nominal input voltage and rated output load, unless otherwise specified. cui.com CUI Inc │ SERIES: PEM1-S │ DESCRIPTION: DC-DC CONVERTER date 03/19/2013 │ page 6 of 6 REVISION HISTORY rev. description date 1.0 initial release 03/19/2013 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Fax 503.612.2383 Tualatin, OR 97062 cui.com 800.275.4899 techsupport@cui.com CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website. CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.