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UCC28711 Datasheet(PDF) 3 Page - Texas Instruments |
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UCC28711 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 34 page  VDD VS CBC GND HV DRV CS 1 2 3 4 7 6 5 UCC28710 UCC28714 UCC28715 VDD VS NTC GND HV DRV CS 1 2 3 4 7 6 5 UCC28711 UCC28712 UCC28713 UCC28710, UCC28711, UCC28712, UCC28713, UCC28714, UCC28715, UCC28716 www.ti.com SLUSB86B – NOVEMBER 2012 – REVISED JULY 2015 5 Device Comparison Table (1) (2) MINIMUM PACKAGE PINS ORDERABLE DEVICES SWITCHING OPTIONS FREQUENCY (Hz) UCC28710D Programmable cable compensation UCC28711D NTC option, 0-mV (at 5-V output) cable compensation NTC option, 150-mV (at 5-V output) cable 680 UCC28712D compensation SOIC (D) 7 NTC option, 300-mV (at 5-V output) cable UCC28713D compensation UCC28714D 340 Programmable cable compensation UCC28715D 1500 Programmable cable compensation (1) See Mechanical, Packaging, and Orderable Information for specific device ordering information. (2) For other fixed cable compensation options, please consult the factory. 6 Pin Configuration and Functions SOIC (D) PACKAGE 7 PINS (TOP VIEW) Pin Functions PIN UCC28710 UCC28711 I/O DESCRIPTION NAME UCC28714 UCC28712 UCC28715 UCC28713 Cable compensation is a programming pin for compensation of cable voltage drop. CBC 3 — I Cable compensation is programmed with a resistor to GND. Current sense input connects to a ground-referenced current-sense resistor in series with the power switch. The resulting voltage is used to monitor and control the peak CS 5 5 I primary current. A series resistor can be added to this pin to compensate the peak switch current levels as the AC-mains input varies. Drive is an output used to drive the gate of an external high voltage MOSFET DRV 6 6 O switching transistor. The ground pin is both the reference pin for the controller and the low-side return for the drive output. Special care should be taken to return all AC decoupling capacitors GND 4 4 — as close as possible to this pin and avoid any common trace length with analog signal return paths. The high-voltage pin connects directly to the rectified bulk voltage and provides HV 7 7 I charge to the VDD capacitor for start-up of the power supply. NTC an interface to an external negative temperature coefficient resistor for remote NTC — 3 I temperature sensing. Pulling this pin low shuts down PWM action. VDD is the bias supply input pin to the controller. A carefully-placed bypass capacitor VDD 1 1 I to GND is required on this pin. Copyright © 2012–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: UCC28710 UCC28711 UCC28712 UCC28713 UCC28714 UCC28715 UCC28716 |
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