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TPS5140 датащи(PDF) 7 Page - Texas Instruments |
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TPS5140 датащи(HTML) 7 Page - Texas Instruments |
7 / 59 page TPS5140 FOUR-CHANNEL DC/DC CONTROLLER FOR NOTEBOOK PC POWER SLVS305A – DECEMBER 2000 – REVISED JANUARY 2001 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION Ct 8 I/O External capacitor from Ct to GND used for adjusting the triangle oscillator. EXT_PG 21 I External power good signal input FB1 1 O Feedback output of CH1 error amplifier FB2 5 O Feedback output of CH2 error amplifier FB3 25 O Feedback output of CH3 error amplifier GND 9 Control GND GND_UP 40 Ground for 12-V boost converter INV1 64 I Inverting input of CH1 error amplifier, skip comparator and OVP1/UVP1, PG comparator INV2 4 I Inverting input of CH1 error amplifier, skip comparator and OVP2/UVP2, PG comparator INV3 26 I Inverting input of CH1 error amplifier, skip comparator and OVP3/UVP3, PG comparator IN_12V 38 I Input of PMOS switch for 12-V boost output. Connecting to cathode of the external Schottky diode. LH1 61 I/O Bootstrap capacitor connection for CH1 high side gate drive LH2 48 I/O Bootstrap capacitor connection for CH2 high side gate drive LH3 28 I/O Bootstrap capacitor connection for CH3 high side gate drive LL1 59 I/O Bootstrap low for CH1 high side gate driving return and output current protection. Connect to the junction of the high side and low side FETs for floating drive configuration. LL2 50 I/O Bootstrap low for CH2 high side gate driving return and output current protection. Connect to the junction of the high side and low side FETs for floating drive configuration. LL3 30 I/O Bootstrap low for CH3 high side gate driving return and output current protection. Connect to the junction of the high side and low side FETs for floating drive configuration. LL_UP 39 I/O Open drain output of internal NMOS switch for 12-V boost converter. Connect between exter- nal inductor and the anode of the schottky diode. NC 3,20,27,33, 36,41,45,47 58,62,63 No connect OUT1_d 57 O Gate drive output for CH1 low side gate drive OUT2_d 51 O Gate drive output for CH2 low side gate drive OUT3_d 31 O Gate drive output for CH3 low side gate drive OUT1_u 60 O Gate drive output for CH1 high side switching FETs OUT2_u 49 O Gate drive output for CH2 high side switching FETs OUT3_u 29 O Gate drive output for CH3 high side switching FETs OUT_12V 37 O Output of PMOS switch for 12-V boost output. Connect to the output capacitor for 12-V boost output. OUTGND1 56 Ground for CH1 FETs drivers. It is connected to one of the current limiting comparator input. OUTGND2 52 Ground for CH2 FETs drivers. It is connected to one of current limiting comparator input. OUTGND3 32 Ground for CH3 FETs drivers. It is connected to the one of current limiting comparator input. PGOUT 18 O Open drain output for power good signal PG_DELAY 19 I/O Programmable delay for power good. Connect to the external capacitor for timer delay. PHASE_12V 23 I Phase compensation for the12-V boost converter. Connect to an external capacitor. But normally it is not connected. PWM_SEL 7 I PWM or auto PWM/SKIP modes select L: PWM fixed H: auto PWM/SKIP REF 10 O 1.185 V reference voltage output |
Аналогичный номер детали - TPS5140 |
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Аналогичное описание - TPS5140 |
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