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TPS272C45 データシート(PDF) 12 Page - Texas Instruments |
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TPS272C45 データシート(HTML) 12 Page - Texas Instruments |
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12 / 46 page  7.6 SNS Timing Characteristics VS = 6 V to 36 V, TJ = -40°C to +125°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SNS TIMING - CURRENT SENSE tSNSION1 Settling time from rising edge of DIA_EN 50% of VDIA_EN to 95% of settled ISNS VENx = 5 V, VDIA_EN = 0 V to 5 V RSNS = 1 kΩ, IL = 2 A 30 µs tSNSION1 Settling time from rising edge of DIA_EN 50% of VDIA_EN to 95% of settled ISNS VENx = 5 V, VDIA_EN = 0 V to 5 V RSNS = 1 kΩ, IL = 100 mA 60 µs tSNSION2 Settling time from rising edge of EN and DIA_EN 50% of VDIA_EN VEN to 95% of settled ISNS VENx = VDIA_EN = 0 V to 5 V VS = 24 V, RSNS = 1 kΩ, RL = 12 Ω 85 µs tSNSIOFF1 Settling time from falling edge of DIA_EN VENx = 5 V, VDIA_EN = 5 V to 0 V RSNS = 1 kΩ, IL = 2 A 20 µs tSETTLEH Settling time from rising edge of load step VEN1 = 5 V, VDIA_EN = 5 V RSNS = 1 kΩ, IOUT = 0.8 A to 2 A 20 µs tSETTLEL Settling time from falling edge of load step VENx = 5 V, VDIA_EN = 5 V RSNS = 1 kΩ, IOUT = 2 A to 0.8 A 20 µs SNS TIMING - MULTIPLEXER tMUX Settling time from current sense on CHx to CHy VENx = 5V, VDIA_EN = 5 V VSEL = 0 V to 5 V RSNS = 1 kΩ, IOUT1 = 0.2 A, IOUT2 = 2 A 20 µs 7.7 Switching Characteristics VS = 6 V to 36 V, TJ = -40°C to +125°C (unless otherwise noted) Parameter Test Conditions Min Typ Max Unit tDR CH1 and CH2 Turnon delay time VS = 24 V, RL = 48 Ω 50% of EN to 10% of VOUT 20 30 40 µs tDF CH1 and CH2 Turnoff delay time VS = 24 V, RL = 48 Ω 50% of EN to 90% of VOUT 15 35 55 µs SR2R VOUTx rising slew rate VS = 24 V, 25% to 75% of VOUT, RL = 48 Ω 0.4 0.6 0.8 V/µs SR2F VOUTx falling slew rate VS = 24 V, 75% to 25% of VOUT, RL = 48 Ω 0.5 0.9 1.2 V/µs fmax Maximum PWM frequency 1 kHz tON CH1 and CH2 Turnon time VS = 24 V, RL = 48 Ω 50% of EN to 90% of VOUT 40 70 µs tOFF CH1 and CH2 Turnoff time VS = 24 V, RL = 48 Ω 50% of EN to 10% of VOUT 35 70 µs tON - tOFF CH1 and CH2 Turnon and off matching 1ms ON time switch enable pulse VBB = 24 V, RL = 48 Ω –25 0 25 µs ΔPWM CH1 and CH2 PWM accuracy - average load current 200-µs enable pulse, VS = 24 V, RL = 48 Ω F = fmax –12.5 0 12.5 % ΔPWM CH1 and CH2 PWM accuracy - average load current 100-µs enable pulse, VS = 24 V, RL = 48 Ω F = fmax –25 0 25 % tON - tOFF CH1 Turnon and off timing matching 100-µs enable pulse, VS = 24 V, RL = 48 Ω F = fmax –25 0 25 µs tON - tOFF CH2 Turnon and off timing matching 100-µs enable pulse, VS = 24 V, RL = 48 Ω F = fmax –25 0 25 µs TPS272C45 SLVSF24 – DECEMBER 2020 www.ti.com 12 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated Product Folder Links: TPS272C45 |
同様の部品番号 - TPS272C45 |
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同様の説明 - TPS272C45 |
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