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參數(shù)資料
| 型號(hào)： | TC647VUATR |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁(yè)數(shù)： | 28/28頁(yè) |
| 文件大小： | 478K |
| 代理商： | TC647VUATR |
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2002 Microchip Technology Inc.
DS21447C-page 9
TC647
5.0
TYPICAL APPLICATIONS
Designing with the TC647 involves the following:
(1) The temp sensor network must be configured to
deliver 1.25V to 2.65V on VIN for 0% to 100% of
the temperature range to be regulated.
(2) The minimum fan speed (VMIN) must be set.
(3) The output drive transistor and associated circuitry
must be selected.
(4) The SENSE network, RSENSE and CSENSE, must
be designed for maximum efficiency while
delivering adequate signal amplitude.
(5) If shutdown capability is desired, the drive require-
ments of the external signal or circuit must be
considered.
The TC642 demonstration and prototyping board
(TC642DEMO) and the TC642
Evaluation
Kit
(TC642EV) provide working examples of TC647 cir-
cuits and prototyping aids. The TC642DEMO is a
printed circuit board optimized for small size and ease
of inclusion into system prototypes. The TC642EV is a
larger board intended for benchtop development and
analysis. At the very least, anyone contemplating a
design using the TC647 should consult the documen-
tation for both TC642EV and (DS21403) and
TC642DEMO (DS21401). Figure 5-1 shows the base
schematic for the TC642DEMO.
FIGURE 5-1:
Typical Application Circuit.
FAULT
SENSE
NTC
R1
R2
R3
R4
GND
Fan Fault
Shutdown
(Optional)
Note: *See cautions regarding latch-up considerations in Section 5.0, "Typical Applications".
Q1
+12V
+5V*
VDD
VIN
VMIN
VOUT
RBASE
RSENSE
CSENSE
CF
1 F
CF
TC647
Fan
1
8
6
7
5
4
2
3
CB
1 F
CB
0.01 F
CB
0.01 F
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