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TPS53127PWR Datasheet(PDF) 6 Page - Texas Instruments |
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TPS53127PWR Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 23 page  VBST1 EN1 VO1 VFB1 GND SS1 VFB2 VO2 EN2 VBST2 DRVH1 SW1 DRVL1 PGND1 TRIP1 VIN VREG5 V5FILT SS2 TRIP2 PGND2 DRVL2 SW2 DRVH2 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 9 10 11 12 16 15 14 13 TSSOP PACKAGE (TOP VIEW) TRIP1 VIN VO1 VFB1 GND SS1 VREG5 V5 FILT SS 2 TRIP2 VFB2 VO2 16 15 14 13 18 17 1 2 3 4 5 6 QFN PACKAGE (TOP VIEW) TPS53127 SLVSA93 – MARCH 2010 www.ti.com PIN Fucntion Table (continued) TERMINAL I/O DESCRIPTION QFN TSSOP NAME 24 24 Signal ground pin. Connect to PGND1, PGND2 and system ground at a single GND 3 6 I point. DRVH1, High-side N-Channel MOSFET gate driver outputs. SWx referenced drivers 22, 9 1, 12 O DRVH2 switch between SWx (OFF) and VBSTx (ON). Switch node connections for both the high-side drivers and the over current SW1, SW2 21, 10 24, 13 I/O comparators. DRVL1, Low-side N-Channel MOSFET gate driver outputs. PGND referenced drivers 20, 11 23, 14 O DRVL2 switch between PGNDx (OFF) and VREG5 (ON). Power ground connections for both the low-side drivers and the over current PGND1, 19, 12 22, 15 I/O comparators. Connect PGND1, PGND2 and GND strongly together near the PGND2 IC. TRIP1, Over current threshold programming pin. Connect to GND with a resistor to 18, 13 21, 16 I TRIP2 GND to set threshold for low-side RDS(ON) current limit. Supply Input for 5-V linear regulator. Bypass to GND with a minimum VIN 17 20 I high-quality 0.1-mF ceramic capacitor. 5-V supply input for the entire control circuitry except the MOSFET drivers. V5FILT 15 18 I Bypass to GND with a minimum high-quality 1.0-mF ceramic capacitor. V5FILT is connected to VREG5 via an internal 10- Ω resistor. Output of 5-V linear regulator and supply for MOSFET drivers. Bypass to GND VREG5 16 19 O with a minimum high-quality 4.7-mF ceramic capacitor. VREG5 is connected to V5FILT via an internal 10- Ω resistor. Soft-start programming pin. Connect capacitor from SSx pin to GND to program SS1, SS2 4,14 7, 17 O soft-start time. 6 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): TPS53127 |
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