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TPS92640PWPT Datasheet(PDF) 9 Page - Texas Instruments |
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TPS92640PWPT Datasheet(HTML) 9 Page - Texas Instruments |
9 / 37 page VIN = 48V VLED § 32V (10 LEDs) ILED = 1A fSW § 500kHz ILED : 500mA/DIV VSW : 20V/DIV Time : 1Ps/DIV VIN = 48V VLED § 32V (10 LEDs) ILED = 1A fSW § 500kHz fUDIM = 200Hz ILED : 500mA/DIV VSW : 20V/DIV VUDIM : 5V/DIV Time : 1ms/DIV VIN : 50V/DIV VSW : 20V/DIV ILED : 500mA/DIV VIN = 48V VLED § 32V (10 LEDs) ILED = 1A fSW § 500kHz Time : 4ms/DIV 0 100 200 300 400 500 600 700 0 10 20 30 40 50 60 70 80 90 Input Voltgae, V IN(V) C009 1 LED 8 LEDs 15 LEDs f SW § N+] 1RP I LED = 1A (Nom.) L = 68µH, 94mQ 0.900 0.950 1.000 1.050 1.100 0 10 20 30 40 50 60 70 80 90 Input Voltage, V IN(V) C007 1 LED 8 LEDs 15 LEDs f SW § N+] 1RP I LED = 1A (Nom.) L = 68µ, 94mQ 50.0 60.0 70.0 80.0 90.0 100.0 0 10 20 30 40 50 60 70 80 90 Input Voltage, V IN(V) C008 1 LED 8 LEDs 15 LEDs f SW § N+] 1RP I LED = 1A (Nom.) L = 68µH, 94mQ Q HS, QLS : SUD15N15-95 TPS92640, TPS92641 www.ti.com SNVS902A – OCTOBER 2012 – REVISED OCTOBER 2015 Typical Characteristics (continued) Unless otherwise stated, –40°C ≤ TA = TJ ≤ 125°C, VIN = 24 V, VIADJ= 2 V, ILED = 1 A, CVCC = 2.2 μF, CCOMP = 0.47 μF Figure 7. LED Current, ILED vs Input Voltage, VIN Figure 8. Conversion Efficiency, η vs Input Voltage, VIN Figure 9. Converter Switching Frequency, fSW vs Input Figure 10. Waveforms of Power-Up Transient Voltage, VIN Figure 11. Waveforms of Steady-State Operation Figure 12. Waveforms of UDIM Operation (DDIM = 0.5) Copyright © 2012–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: TPS92640 TPS92641 |
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