HY-5610 データシートの表示（PDF） - Unspecified
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HY-5610 Datasheet PDF : 4 Pages
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hytek
Microsystems
ON RESISTANCE
OF CURRENT
SINK
HY-5610 CURRENT SOURCE
CHARACTERISTICS
CONSTANT
POWER
CURVE = 6 WATTS
2.0
UNSAFE
OPERATING
AREA
1.0
HY-5610
TEC CONTROLLER
11/97
Figure 2 illustrates the characteristics of
the HY-5610 power drive section. It also
illustrates the unsafe operating area
where the power dissipated in the device
exceeds the maximum 6 watt rating.
This curve applies for both heating and
cooling operation.
Note that the resistance of the power
drive section is approximately one ohm
when the HY-5610 is fully turned on.
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
VOLTS
FIGURE 2
SUPPLY VOLTAGE ( VS )
PIN 10 TO GROUND (PIN 11 & 12)
DETERMINATION OF THE
HY-5610 OPERATING
POINTS USING LOAD LINES
LOAD LINE FOR A
ITI Ferro Tec MODEL
6300/018/018A TEC (1.5Ω)
2.0
UNSAFE
OPERATING
AREA
1.0
LOAD LINE FOR
A MELCOR MODEL
FC 0.45-66-05 TEC
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
FIGURE 3
VOLTS
SUPPLY VOLTAGE ( VS )
PIN 10 TO GROUND (PIN 11 & 12)
Figure 3 illustrates the locus of operating
current and voltage for two different TECs.
Example 1:
A supply voltage of 5 Volts was chosen for
use with the ITI Ferro Tek Model
6300/018/018A TEC. This device is rated for
a maximum current of 1.8 Amperes at a
maximum allowable voltage of 2.7 Volts.
This is a load resistance of approximately
1.5 ohms. The intersection of the 1.5 ohm
load line and the HY-5610 current source
characteristic's define the locus of operation
voltage and current for both the HY-5610
and the TEC. In this application the current
was limited to 1.8 Amperes when cooling and
to 0.6 Amperes when heating by proper
selection of RCC & RCH.
Example 2:
A supply voltage of 12 Volts was chosen for
the Melcor FC 0.45-66-05 TEC. This device
has a maximum rated voltage of 7.98 Volts
at a current of 0.8 Amperes. A load line for
this device is also shown on the plot. Once
again maximum turn on current is set by
proper selection of RCC & RCH.
Note that the power dissipated in the HY-
5610 never exceeds the 6 Watt maximum
power dissipation in both of these examples.
hytek Microsystems 400 Hot Springs Rd. Carson City NV 89706 (702) 883-0820 Fax -0827 www.hytek.com
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