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PQ60010QPA60NK2 Datasheet(PDF) 11 Page - SynQor Worldwide Headquarters |
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PQ60010QPA60NK2 Datasheet(HTML) 11 Page - SynQor Worldwide Headquarters |
11 / 13 page Product # PQ60010QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP610F Rev. D 9/21/07 Page 11 T Technical S echnical Specification pecification Input: Input: Output: Output: Current: Current: PPackage: ackage: 35-75 V 35-75 V 1.0 V 1.0 V 60 A 60 A Quarter-brick Quarter-brick 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 web site (www.synqor.com) which provides an understanding of why this instability arises, and shows the preferred solution for cor- recting it. Application Circuits: Figure D below provides a typical cir- cuit diagram which details the input filtering and voltage trim- ming. Input Filtering and External Capacitance: Figure E below provides a diagram showing the internal input filter components. This filter dramatically reduces input terminal ripple current, which otherwise could exceed the rating of an external elec- trolytic input capacitor. The recommended external input capac- itance is specified in the “Input Characteristics” section. More detailed information is available in the application note titled “EMI Characteristics” on the SynQor website. Vin External Input Filter Trim Vin(+) Iload Cload L Vout(+) Rtrim-up or Rtrim-down Vsense(+) ON/OFF Vin(_) Vin(+) Vin(_) Vout(_) Vsense(_) Electrolytic Capacitor 47µF Figure D: Typical application circuit (negative logic unit, permanently enabled). Figure E: Internal Input Filter Diagram (component values listed on page 3). C |
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