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UCC28061D Datasheet(PDF) 6 Page - Texas Instruments |
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UCC28061D Datasheet(HTML) 6 Page - Texas Instruments |
6 / 31 page UCC28061 SLUS837 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS (continued) At VCC = 16 V, AGND = PGND = 0 V, VINAC = 3 V, VSENSE = 6 V, HVSEN = 3 V, PHB = 5 V, RTSET = 133 kΩ; all voltages are with respect to GND, all outputs unloaded, –40°C < TJ = TA < +125°C, and currents are positive into and negative out of the specified terminal, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PULSE-WIDTH MODULATOR KTL On-time factor, phases A and B VINAC = 3.2 V, VSENSE = 5.8 V(3) 3.6 4.0 4.4 µs/V VINAC = 3.2 V, VSENSE = 5.8 V, KTLS On-time factor, single-phase, A 7.2 8 8.9 PHB = 0 V(3) Phase B to phase A on-time matching VSENSE = 5.8 V, VINAC = 3.2 V –6% 6% COMP = 0.25 V, VINAC = 1 V 1.2 2 2.7 Zero-crossing distortion correction additional on µs time COMP = 0.25 V, VINAC = 0.1 V 12.6 20 29 PHB threshold falling, to single-phase operation To GDB output shutdown VINAC = 1.5 V 0.7 0.8 0.9 V PHB threshold rising, to two-phase operation To GDB output running VINAC = 1.5 V 0.9 1.0 1.1 T(min) Minimum switching period RTSET = 133 kΩ (3) 1.7 2.2 2.5 µs PWM restart time ZCDA = ZCDB = 2 V(4) 165 200 265 THERMAL SHUTDOWN Thermal shutdown temperature TJ, temperature rising (5) +160 °C Thermal restart temperature TJ, temperature falling (5) +140 (3) Gate drive on-time is proportional to VCOMP – 125 mV. The on-time proportionality factor, KT, is different in two-phase and single-phase modes. The on-time factor, KT, scales linearly with the value of RTSET. The minimum switching period is proportional to RTSET. (4) An output on-time is generated at both GDA and GDB if both ZCDA and ZCDB negative-going edges are not detected for the restart time. In single-phase mode, the restart time applies for the ZCDA input and the GDA output. (5) Thermal shutdown occurs at temperatures higher than the normal operating range. Device performance above the normal operating temperature is not specified or assured. 6 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): UCC28061 |
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