PXO78-500-S CUI

Document overview

  • Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 7

Technical content

cui.com date 10/18/2022 page 1 of 7 SERIES: PXO78-500-S │ DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR

FEATURES

  • economical open-frame design
  • designed to meet EN/BS 62368
  • no-load input current as low as 0.2 mA
  • supports negative output
  • output short circuit protection
  • designed to meet EN IEC 62368-1 & BS EN IEC 62368-1 MODEL input voltage1 output voltage output current output power ripple & noise2 efficiency3 typ (Vdc) range (Vdc) (Vdc) max (mA) max (W) max (mVp-p) typ (%) PXO7803-500-S 24 4.75~36 7~32 3.3 -3.3 500 -300 1.65 0.99 100 85 PXO7805-500-S 24 6.5~36 7~31 500 -300 2.5 1.5 100 90 PXO7806-500-S 24 8~36 7~29 6.5 -6.5 500 -300 3.25 1.95 100 91 PXO7809-500-S 24 12~36 8~27 500 -150 4.5 1.35 100 93 PXO7812-500-S 24 15~36 8~24 -12 500 -150 6.0 1.8 100 94 PXO7815-500-S 24 19~36 8~21 -15 500 -150 7.5 2.25 100 95 Notes: 1. For input voltages higher than 30 Vdc, a 22 µF / 50 V input capacitor is required. 2. Tested at nominal input, 20~100%, 20 MHz bandwidth. At loads below 20%, the max ripple and noise will be 300 mVp-p max. 4. All specifications are measured at Ta=25°C, humidity < 75%, nominal input voltage, and rated output load unless otherwise specified. PART NUMBER KEY Base Number PXO78 XX - 500 - S Output Voltage Output Current Additional Resources: Product Page | 3D Model | PCB Footprint

cui.com date 10/18/2022 │ page 2 of 7CUI Inc │ SERIES: PXO78-500-S │ DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR INPUT parameter conditions/description min typ max units input reverse polarity protection no no-load input current positive output at nominal input voltage negative output at nominal input voltage 0.2 1.5 mA mA filter capacitor filter OUTPUT parameter conditions/description min typ max units maximum capacitive load positive output negative output 680 330 μF μF voltage accuracy at full load, input voltage range

3.3 Vdc output model

line regulation at full load, input voltage range ±0.2 ±0.5 % load regulation at nominal input, 0~100% load ±0.3 ±1 % switching frequency at nominal input voltage, full load 700 kHz transient recovery time at nominal input voltage, 25% load step change 0.2 1 ms transient response deviation at nominal input voltage, 25% load step change ±50 ±250 mV temperature coefficient operating temperature -40°C~80°C ±0.02 %/°C PROTECTIONS parameter conditions/description min typ max units short circuit protection continuous, auto recovery SAFETY AND COMPLIANCE parameter conditions/description min typ max units safety approvals designed to meet 62368: EN/IEC conducted emissions CISPR32/EN55032 CLASS B (see Fig. 5-2 for recommended circuit) radiated emissions CISPR32/EN55032 CLASS B (see Fig. 5-2 for recommended circuit) ESD IEC/EN 61000-4-2 Contact ±4kV, perf. Criteria B radiated immunity IEC/EN 61000-4-3 10V/m, perf. Criteria A EFT/burst IEC/EN 61000-4-4 ±1kV (see Fig. 5-1 for recommended circuit), perf. Criteria B surge IEC/EN 61000-4-5 line to line ±1kV (see Fig. 5-1 for recommended circuit, perf. Criteria B conducted immunity IEC/EN 61000-4-6 3 Vrms, perf. Criteria A MTBF as per MIL-HDBK-217F, 25°C 2,000,000 hours RoHS yes Additional Resources: Product Page | 3D Model | PCB Footprint

cui.com date 10/18/2022 │ page 3 of 7CUI Inc │ SERIES: PXO78-500-S │ DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR ENVIRONMENTAL parameter conditions/description min typ max units operating temperature see derating curve -40 85 °C storage temperature -55 125 °C storage humidity non-condensing 5 95 % SOLDERABILITY parameter conditions/description min typ max units pin soldering resistance temperature soldering time: 10 seconds 260 °C MECHANICAL parameter conditions/description min typ max units weight 0.6 g cooling method natural convection MECHANICAL DRAWING units: mm [inch] tolerance: ±0.50[±0.020] pin section tolerance: ±0.20[±0.008] PIN-OUT PIN POSITIVE OUTPUT NEGATIVE OUTPUT FUNCTION FUNCTION

1 Vin Vin

2 GND -Vout

3 Vout GND

Additional Resources: Product Page | 3D Model | PCB Footprint

cui.com date 10/18/2022 │ page 4 of 7CUI Inc │ SERIES: PXO78-500-S │ DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR DERATING CURVE EFFICIENCY CURVES Figure 1 Additional Resources: Product Page | 3D Model | PCB Footprint

cui.com date 10/18/2022 │ page 6 of 7CUI Inc │ SERIES: PXO78-500-S │ DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR EMC RECOMMENDED CIRCUIT Table 2Figure 5 Recommended external circuit components FUSE choose according to actual input current MOV S20K30 LDM1 82 µH C0 680 µF/50 V C1 / C2 see Table 1 C5 10 µF/50 V LDM2 22 µH Note: For EMC tests we use Part ① in Fig. 5 for immunity and part ➁ for emissions test. Selecting based on needs. Additional Resources: Product Page | 3D Model | PCB Footprint

date 10/18/2022 │ page 7 of 7CUI Inc │ SERIES: PXO78-500-S │ DESCRIPTION: NON-ISOLATED DC SWITCHING REGULATOR 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. Headquarters 20050 SW 112th Ave. Tualatin, OR 97062 800.275.4899 Fax 503.612.2383 cui.com techsupport@cui.com rev. description date 1.0 initial release 10/18/2022 The revision history provided is for informational purposes only and is believed to be accurate.

REVISION HISTORY

Additional Resources: Product Page | 3D Model | PCB Footprint