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TPS65912 Datasheet(PDF) 6 Page - Texas Instruments |
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TPS65912 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 145 page TPS659121, TPS659122 SWCS071B – AUGUST 2012 – REVISED APRIL 2015 www.ti.com 3.1 Signal Descriptions Signal Descriptions for TPS65912x TERMINAL TYPE DESCRIPTION NAME ALT NAME NO. REFERENCE Internal reference voltage. Connect a 100-nF capacitor from this pin to VREF1V25 H3 O GND. Do not load this pin externally. AGND F3, C7 – Analog ground connection; connect to PGND on the PCB DRIVERS / LIGHTING LEDA/GPIO3 B3 I/O General-purpose I/O or LED driver output LEDB/GPIO4 B2 I/O General-purpose I/O or LED driver output LEDC/GPIO5 B1 I/O General-purpose I/O or LED driver output STEP-DOWN CONVERTERS Analog supply input for DC-DC converters; must be connected to VINDCDC_ANA C8 I VINDCDC1, VINDCDC2, VINDCDC3 and VINDCDC4 Power input to DCDC1 converter; connect to VINDCDC2, VINDCDC3, VINDCDC1 H7, J7 I VINDCDC4 and VINDCDC_ANA VDCDC1 J4 I Voltage sense (feedback) input "+" for DCDC1 Voltage sense (feedback) input GND for DCDC1; tie to the GND plane VDCDC1_GND H4 I or to AGND, alternatively tie to the GND-pad of the output capacitor SW1 H6, J6 O Switch node of DCDC1; connect output inductor PGND1 H5, J5 – Power GND connection for DCDC1 converter VCON_PWM F4 I PWM period signal for dynamic voltage scaling on DCDC1 VCON_CLK F5 I Clock signal for dynamic voltage scaling on DCDC1 Power input to DCDC2 converter; connect to VINDCDC1, VINDCDC3, VINDCDC2 C9 I VINDCDC4 and VINDCDC_ANA VDCDC2 D7 I Voltage sense (feedback) input for DCDC2 SW2 D9 O Switch node of DCDC2; connect output inductor PGND2 E9 – Power GND connection for DCDC2 converter Power input to DCDC3 converter; connect to VINDCDC1, VINDCDC2, VINDCDC3 C1 I VINDCDC4 and VINDCDC_ANA VDCDC3 F2 I Voltage sense (feedback) input for DCDC3 SW3 D1 O Switch node of DCDC3; connect output inductor PGND3 E1 – Power GND connection for DCDC3 converter Power input to DCDC4 converter; connect to VINDCDC1, VINDCDC2, VINDCDC4 A7, B7 I VINDCDC3 and VINDCDC_ANA VDCDC4 A4 I Voltage sense (feedback) input "+" for DCDC4 Voltage sense (feedback) input GND for DCDC4; tie to the GND plane VDCDC4_GND B4 I or to AGND, alternatively tie to the GND-pad of the output capacitor SW4 A6, B6 O Switch node of DCDC4; connect output inductor PGND4 A5, B5 – Power GND connection for DCDC4 converter LOAD SWITCH LSI B8, B9 I Input of the load switch LSO A8, A9 O Output of the load switch Load switch enable pin; the status is copied to Bit EN_LS0 C3 I [LOADSWITCH:ENABLE0] in state CONFIG Load switch enable pin; the status is copied to Bit EN_LS1 C2 I [LOADSWITCH:ENABLE1] in state CONFIG 6 Terminal Configuration and Functions Copyright © 2012–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: TPS659121 TPS659122 |
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