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VNH7013XP-E Datasheet(PDF) 17 Page - STMicroelectronics |
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VNH7013XP-E Datasheet(HTML) 17 Page - STMicroelectronics |
17 / 24 page VNH7013XP-E Package and PCB thermal data Doc ID 022370 Rev 3 17/24 3.1.2 Thermal resistances definition (values according to the PCB heatsink area) RthHS = RthHSA = RthHSB = High Side Chip Thermal Resistance Junction to Ambient (HSA or HSB in ON state) RthLS = RthLSA = RthLSB = Low Side Chip Thermal Resistance Junction to Ambient RthHSLS = RthHSALSB = RthHSBLSA = Mutual Thermal Resistance Junction to Ambient between High Side and Low Side Chips RthLSLS = RthLSALSB = Mutual Thermal Resistance Junction to Ambient between Low Side Chips 3.1.3 Thermal calculation in transient mode(a) TjHSAB = ZthHS x PdHSAB + ZthHSLS x (PdLSA + PdLSB) + Tamb TjLSA = ZthHSLS x PdHSAB + ZthLS x PdLSA + ZthLSLS x PdLSB + Tamb TjLSB = ZthHSLS x PdHSAB + ZthLSLS x PdLSA + ZthLS x PdLSB + Tamb 3.1.4 Single pulse thermal impedance definition (values according to the PCB heatsink area) ZthHS = High Side Chip Thermal Impedance Junction to Ambient ZthLS = ZthLSA = ZthLSB = Low Side Chip Thermal Impedance Junction to Ambient ZthHSLS = ZthHSABLSA = ZthHSABLSB = Mutual Thermal Impedance Junction to Ambient between High Side and Low Side Chips ZthLSLS = ZthLSALSB = Mutual Thermal Impedance Junction to Ambient between Low Side Chips Equation 1: pulse calculation formula a. Calculation is valid in any dynamic operating condition. Pd values set by user. Z TH δ R TH δ Z THtp 1 δ – () + Þ = where δ t p T ⁄ = |
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