EQ2660-9R Datasheet, PDF (17/26 Pages) Power-One – Q Series Data Sheet 66 – 132 Watt DC-DC Converters

Q Series Data Sheet
®
66 – 132 Watt DC-DC Converters
Programmable Output Voltage (R-Function)
This feature is not available on models with 3.3 V output or with
option P.
Note: Models with 3.3 V output or with option P: The R-input must
be left open-circuit.
The converters offer a programmable output voltage. The
adjust is performed either by an external control voltage V_ext or
an external resistor R₁ or R₂, connected to the R-input.
Trimming is limited to the values given in the table below (see
also Electrical Output Data). With open R-input, the output
voltage is set to V_{o nom}.
With double-output models, both outputs are affected by the
R-input settings.
If output voltages are set higher than V_{o nom}, the output
currents should be reduced accordingly, so that the maximum
specified output power is not exceeded.
a) Adjustment by means of an external control voltage
V_ext between R (pin 16) and S– (pin 14); see fig. 20.
V_ext
≈
2.5 V
•
–––^V–^o–––
V_{o nom}
V_o
≈
V_{o nom}
•
–^V––^ex–^t–
2.5 V
Caution: To prevent damage, V_ext should not exceed 20 V, nor be
negative.
b) Adjustment by means of an external resistor:
The resistor can either be connected:
• between R (pin 16) and S – (pin 14) to set V_o < V_{o nom}, or
• between R (pin 16) and S+ (pin 12) to set V_o > V_{o nom}.
Note: R-inputs of n converters with paralleled outputs may be
paralleled too, but if only one external resistor is used, its value
should be R₁/n or R₂/n, respectively.
Double-
output
model
i
06093b
+^Vex–^t
R 16
Vo1+ 4
S+ 12
S– 14
Load 1
Vi+
Vo1– 8
Fig. 20
Vi–
Vo2+ 6
Vo2– 10
Load 2
Output adjust using an external control voltage V_ext.
06094b
Single-output R 16
model
Vo+ 4
Vo+ 6
R₂
R₁
i
S+ 12
Vi+
S– 14
Load
Vi–
Vo– 8
Fig. 21
Vo– 10
Output adjust using a resistor R₁ (to lower Vo) or R₂ (to
increase V_o).
Table 9a: R₁ for V_o < V_{o nom}; approximate values (V_{i nom}, I_{o nom}, series E 96 resistors); R₂ = not fitted
V_{o nom} = 5.1 V
V_o [V] R₁ [kΩ]
4.0
14.7
4.1
16.5
4.2
18.2
4.3
21.5
4.4
25.5
4.5
30.1
4.6
37.4
4.7
47.5
4.8
64.9
4.9
97.6
5
200
V_{o nom} = 12 V
V_o [V] ¹
R₁ [kΩ]
7
14
5.62
7.5
15
6.65
8
16
8.06
8.5
17
9.76
9
18
12.1
9.5
19
15.4
10
20
20
10.5
11
28
11
22
44.2
11.5
23
93.1
V_{o nom} = 15 V
V_o [V] ¹
R₁ [kΩ]
9
18
6.04
9.5
19
6.98
10
20
8.06
10.5
21
9.31
11
22
11
11.5
23
13.3
12
24
16.2
12.5
25
20
13
26
26.1
13.5
27
36.5
14
28
56.2
14.5
29
115
V_{o nom} = 24 V
V_o [V] ¹
R₁ [kΩ]
15 ²
16 ²
17 ²
18 ²
19
20
20.5
21
21.5
22
22.5
23
23.5
30.0 ²
32.0 ²
34.0 ²
36.0 ²
38.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
47.0
6.65 ²
8.06 ²
9.76 ²
12.1
15.4
20
23.7
28.0
34.8
44.2
60.4
90.9
190
Table 9b: R₂ for V_o > V_{o nom}; approximate values (V_{i nom}, I_{o nom}, series E 96 resistors); R₁ = not fitted
V_{o nom} = 5.1 V
V_o [V] R₂ [kΩ]
V_{o nom} = 12 V
V_o [V] ¹
R₂ [kΩ]
V_{o nom} = 15 V
V_o [V] ¹
R₂ [kΩ]
V_{o nom} = 24 V
V_o [V] ¹
R₂ [kΩ]
5.2
215
12.2
24.4
931
15.3
30.6
1020
24.5
49
1690
5.3
110
12.4
24.8
475
15.5
31
619
25
50
866
5.4
75
12.6
25.2
316
15.7
31.4
453
25.5
51
590
5.5
57.6
12.8
25.6
243
16
32
316
26
52
442
5.6
46.4
13
26.0
196
16.2
32.4
267
26.4
52.8
374
13.2
26.4
169
16.5
33
221
1 _{First column: single or double output models with separated/paralleled outputs, second column: outputs in series connection.}
2 _{Not possible for DQ2660 and EQ2660.}
BCD20011- G Rev AG, 12-Mar-2012
Page 17 of 26
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