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DRV8824 Datasheet(PDF) 5 Page - Texas Instruments |
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DRV8824 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 35 page DRV8824 www.ti.com SLVSA06J – OCTOBER 2009 – REVISED JULY 2014 7.4 Thermal Information DRV8824 THERMAL METRIC UNIT PWP (28 PINS) RHD (28 PINS) RθJA Junction-to-ambient thermal resistance(1) 38.9 35.8 RθJC(top) Junction-to-case (top) thermal resistance(2) 23.3 25.1 RθJB Junction-to-board thermal resistance(3) 21.2 8.2 °C/W ψJT Junction-to-top characterization parameter(4) 0.8 0.3 ψJB Junction-to-board characterization parameter(5) 20.9 8.2 RθJC(bot) Junction-to-case (bottom) thermal resistance(6) 2.6 1.1 (1) The junction-to-ambient thermal resistance under natural convection is obtained in a simulation on a JEDEC-standard, high-K board, as specified in JESD51-7, in an environment described in JESD51-2a. (2) The junction-to-case (top) thermal resistance is obtained by simulating a cold plate test on the package top. No specific JEDEC- standard test exists, but a close description can be found in the ANSI SEMI standard G30-88. (3) The junction-to-board thermal resistance is obtained by simulating in an environment with a ring cold plate fixture to control the PCB temperature, as described in JESD51-8. (4) The junction-to-top characterization parameter, ψJT, estimates the junction temperature of a device in a real system and is extracted from the simulation data for obtaining θJA, using a procedure described in JESD51-2a (sections 6 and 7). (5) The junction-to-board characterization parameter, ψJB, estimates the junction temperature of a device in a real system and is extracted from the simulation data for obtaining θJA , using a procedure described in JESD51-2a (sections 6 and 7). (6) The junction-to-case (bottom) thermal resistance is obtained by simulating a cold plate test on the exposed (power) pad. No specific JEDEC standard test exists, but a close description can be found in the ANSI SEMI standard G30-88. Spacer Copyright © 2009–2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: DRV8824 |
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