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TPIC2101N Fiches technique(PDF) 3 Page - Texas Instruments |
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TPIC2101N Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 21 page TPIC2101 DC BRUSH MOTOR CONTROLLER SLIS060 – OCTOBER 1995 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION V5P5 1 O 5.5 V supply voltage. V5P5 is a regulated voltage supply from Vbat, internally switched to AREF during the run state. This requires a 4.7 µF tantalum capacitor from V5P5 to GND for stability. MAN 2 I Manual control input. MAN is an active high (greater than 5.5 V asserts the manual mode) input that serves as a positive differential input (0-2.3 V full range) for the manual mode. In man mode, Iman is approx. 20×Iccs. AUTO 3 I PWM control input. AUTO is an active low input that remains active if pulsed every 2048 counts of the oscillator frequency. It also serves as a negative differential input for the manual mode. In auto mode, Iauto is approx. 13 ×Iccs pullup, Iauto is approx. 20×Iccs pulldown in man mode. SPEED 4 O Integrator output. SPEED is an integrator output with a required minimum resistance between SPEED and INT terminals of 20 k Ω (typically 1 second RC time constant, or as required for soft start). ROSC 5 O Oscillator resistor output. ROSC has an external resistor connected to ground which determines the constant charging current of COSC. The IC forces a voltage of Vbat/4 in run state. COSC 6 O Oscillator capacitor output. COSC has an external capacitor connected to ground which determines (with ROSC) switching frequency. f(osc) = 2/(ROSC ×COSC) INT 7 I Integrator input. INT is an input from an integrator that requires a 4.7 µF capacitor and a 20 k minimum resistance between the SPEED and INT terminals. ILR 8 I Current limit reference. ILR is an input from a resistor divider off AREF. ILS 9 I Current limit sense. ILS senses drain voltage of external FET. ILS trips within ±10 mV of ILR. GND 10 Ground terminal GD 11 O Gate drive output. GD, PWM output, 0-Vbat voltage, provides a 0-Vbat PWM output pre-drive for an external FET. Vbat 12 I Positive power input. AREF 13 O 5.5 V reference voltage. AREF is a 5.5 V reference voltage switched from V5P5 during the run state. AREF is used as a reference for ILR in current limit detection and is capable of sourcing 2 mA of current. CCS 14 Constant current sink. ICCS equals AREF/(2×Rccs). Requires an external resistor. recommended external components for auto and manual modes (see Figures 2 and 4) TERMINAL DESCRIPTION NAME NO. DESCRIPTION V5P5 1 Capacitor – 4.7 µF tantalum MAN 2 Capacitor – 0.1 µF MAN 2 Resistor – 499 Ω, 1%, 100 ppm AUTO 3 Capacitor – 0.47 µF AUTO 3 Resistor – 499 Ω, 1%, 100 ppm SPEED 4 Resistor – 100 k Ω, 1%, 100 ppm to INT terminal, (minimum 20 kΩ) ROSC 5 Resistor – 45.3 k Ω COSC 6 Capacitor – 2200 pF INT 7 Capacitor – 4.7 µF CCS 14 Resistor – 27.4 k Ω, 1%, 100 ppm |
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Description similaire - TPIC2101N |
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