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參數(shù)資料
| 型號(hào)： | TPIC2101D |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 0.05 A, PDSO14 |
| 封裝： | SOIC-14 |
| 文件頁(yè)數(shù)： | 15/21頁(yè) |
| 文件大?。?/td> | 381K |
| 代理商： | TPIC2101D |
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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
F 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
(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
F 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
F tantalum
MAN
2
Capacitor – 0.1
F
MAN
2
Resistor – 499
, 1%, 100 ppm
AUTO
3
Capacitor – 0.47
F
AUTO
3
Resistor – 499
, 1%, 100 ppm
SPEED
4
Resistor – 100 k
, 1%, 100 ppm to INT terminal, (minimum 20 k)
ROSC
5
Resistor – 45.3 k
COSC
6
Capacitor – 2200 pF
INT
7
Capacitor – 4.7
F
CCS
14
Resistor – 27.4 k
, 1%, 100 ppm
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