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IQ24280HZC18NRS-G Datasheet(PDF) 10 Page - SynQor Worldwide Headquarters |
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IQ24280HZC18NRS-G Datasheet(HTML) 10 Page - SynQor Worldwide Headquarters |
10 / 12 page Input: Output: Current: Package: 18-36 V 50 V 10 A (500 W) Half-brick Technical Specification APPLICATION CONSIDERATIONS Input System Instability: This condition can occur because any DC-DC converter appears incrementally as a negative resistance load. A detailed application note titled “Input System Instability” is available on the SynQor website which provides an understanding of why this instability arises, and shows the preferred solution for correcting it. Application Circuits: Figure C below provides a typical circuit diagram which details the input filtering and voltage trimming. Input Filtering and External Input Capacitance: Figure D below shows the internal input filter components. This filter dra- matically reduces input terminal ripple current, which otherwise could exceed the rating of an external electrolytic input capacitor. The recommended external input capacitance is specified in the Input Characteristics section on the Electrical Specifications page. More detailed information is available in the application note titled “EMI Characteristics” on the SynQor website. Output Filtering and External Output Capacitance: Figure D below shows the internal output filter components. This filter dramatically reduces output voltage ripple. However, some minimum external output capacitance is required, as specified in the Output Characteristics section on the Electrical Specifications page. No damage will occur without this capacitor connected, but peak output voltage ripple will be much higher. Vin External Input Filter Trim Vin(+) Iload Cload C1 Lin C2 Vout(+) Rtrim-up or Rtrim-down Vsense(+) ON/OFF Regulation Stage Isolation Stage Current Sense Vin(_) Vin(+) Vin(_) Vout(+) Vout(_) Vout(_) Vsense(_) Electrolytic Capacitor Figure C: Typical application circuit (negative logic unit, permanently enabled). Figure D: Internal Input and Output Filter Diagram (component values listed on specifications page). Product # IQ24500HZx10 Phone 1-888-567-9596 www.synqor.com Doc.# 005-HZC2450 Rev. D 06/16/09 Page 10 |
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