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TPS5602IDBT Datasheet(PDF) 3 Page - Texas Instruments |
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TPS5602IDBT Datasheet(HTML) 3 Page - Texas Instruments |
3 / 27 page TPS5602 DUAL, FAST, HIGH EFFICIENCY CONTROLLER FOR DSP POWER SLVS217 – JUNE 1999 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION COMP 12 I/O Voltage monitor comparator input CT 5 I/O The oscillator frequency external capacitor connection GND 7 Control GND INV1 1 I CH1 hysteretic comparator inverting input INV2 15 I CH2 hysteretic comparator inverting input LH1 30 I/O CH2 high-side gate drive boost capacitor input LH2 16 I/O CH1 high-side gate drive boost capacitor input LL1 28 I/O CH1 high-side drive and current protection LL2 18 I/O CH2 high-side drive and current protection NC 2, 4, 6, 14 OUT1_d 27 I/O CH1 low-side gate drive output OUT2_d 19 O CH2 low-side gate drive output OUT1_u 29 O CH1 high-side switch output OUT2_u 17 O CH2 high-side switch output OUTGND1 26 Output GND 1 OUTGND2 20 Output GND 2 REF 8 O 1.185-V reference voltage output REG5V_IN 21 I External 5-V input SOFTSTART1 3 I/O CH1 soft start control external capacitor connection SOFTSTART2 13 I/O CH2 soft start control external capacitor connection STBY1 9 I CH1 standby control STBY2 10 I CH2 standby control TRIP1 25 I CH1 output current control input TRIP2 23 I CH2 output current control input VCC 11 I Supply voltage input Vref5 22 O 5-V internal regulator output VCCSENSE 24 I Supply voltage sense input detailed description vref (1.185 V) The reference voltage is used for the output voltage setting and the voltage protection (COMP). vref (5 V) An internal linear voltage regulator offers a fixed 5-V voltage as the bootstrap voltage so that the design for the bootstrap is much easier. The tolerance is 6%. The extra current capability can also be used to power external circuitry. 5-V switch If the internal 5-V switch senses a 5-V input from REG5V pin, the internal 5-V linear regulator will be disconnected from the MOSFET drivers. The external 5-V will be used for the low-side driver and the high-side bootstrap, thus increasing the efficiency. |
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