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TPS92314DR Fiches technique(PDF) 4 Page - Texas Instruments |
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TPS92314DR Fiches technique(HTML) 4 Page - Texas Instruments |
4 / 26 page TPS92314 TPS92314A SNVS856B – JUNE 2012 – REVISED MAY 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) VCC = 18V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA = TJ = +25°C. Limits appearing in boldface type apply over the full Operating Temperature Range. Data sheet minimum and maximum specification limits are specified by design, test or statistical analysis. Symbol Parameter Conditions Min Typ (1) Max Units gmISNS ISNS error amp trans-conductance Δ VISNS to Δ ICOMP at VCOMP = 2.5V 96 µmho DELAY CONTROL (DLY) VDLY DLY pin internal reference voltage 1.21 1.24 1.3 V IDLY-MAX DLY source current VDLY= 0V 250 450 µA CURRENT SENSE (ISNS) VISNS-OCP Over Current Limit Detection Threshold TPS92314 1.07 1.15 1.22 V VISNS-OCP Over Current Limit Detection Threshold TPS92314A 1.90 2.0 2.10 V IISNS Current Sense Bias Current VISNS= 5V -1 1 µA TOCP Over current Limit Detection Propagation Measure ISNS pin pulse width with VISNS = 5V 256 ns Delay GATE DRIVER (GATE) VGATE-H GATE low voltage IGATE = 50mA source 7.6 9.4 V VGATE-L GATE high drive voltage IGATE = 50mA sink 85 125 mV tGATE-RISE Rise Time CLOAD = 1nF 94 ns tGATE-FALL Fall Time CLOAD = 1nF 16 ns TON-MIN Minimum ON time With ZCD signal. 311 500 900 ns TON-MAX Maximum ON time 27 43.9 61 µs TOFF-MIN Minimum OFF time 1.00 1.50 1.93 µs TOFF-MAX Maximum OFF time ZCD = GND 67 117 151 µs TOFF-START Maximum OFF time when start up. Maximum OFF time at first 511 switching after 44 78 102 µs UVLO TOFF-OCP Maximum OFF time when OCP OFF time when VISNS =4V. 233 µs THERMAL SHUTDOWN TSD Thermal shutdown temperature See (2) 165 °C Thermal Shutdown hysteresis 20 °C (2) Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at TJ = 165°C (typ.) and disengages at TJ = 145°C (typ). 4 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: TPS92314 TPS92314A |
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