LKP5660-7R【PDF 13/29 页】EURO-CASSETTE 250W 2X 24V

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录233

9页 10页 11页 12页 [13页]14页 15页 16页 17页

K Series with PFC Data Sheet

150 – 280 Watt AC-DC Converters

Auxiliary Functions

Inhibit for Remote On/Off

The outputs may be enabled or disabled by means of a

logic signal (TTL, CMOS, etc.) applied between the inhibit

input i (pin 18) and pin 14 (S – or Vo1–). In systems with

several converters, this feature can be used to control the

activation sequence of the converters. If the inhibit function

is not required, connect the inhibit pin 18 to pin 14.

Note: If pin 18 is not connected, the output is disabled.

06031b

Sense Lines (Single-Output Models)

Important: Sense lines must always be connected!

Incorrectly connected sense lines may activate the

overvoltage protection resulting in a permanent short-circuit

of the output.

This feature allows for compensation of voltage drops

across the connector contacts and if necessary, across the

load lines. We recommend connecting the sense lines

directly at the female connector.

To ensure correct operation, both sense lines (S+, S –)

should be connected to their respective power outputs

Vo+

i 18

I inh

(Vo+ and Vo –), and the voltage difference between any

sense line and its respective power output (as measured

on the connector) should not exceed the following values:

S–/Vo1– 14

V inh

Table 9: Maximum voltage compensation allowed using

sense lines

Fig. 18

Definition of V inh and I inh .

Table 8: Inhibit characteristics

Output

voltage

5.1 V

Total voltage difference

between sense lines and

their respective outputs

< 0.5 V

Voltage difference

between

Vo– and S–

< 0.25 V

Characteristic

Conditions

min

typ

max Unit

12 V, 15 V, 24 V

< 1.0 V

< 0.25 V

V inh Inhibit

voltage

V o = on

V o = off

V i min – V i max

– 50

2.4

0.8

Note: If the output voltages are increased above V o nom via

R-input control, option P setting, remote sensing or option T,

the output currents must be reduced accordingly, so that

I inh

t r

t f

Inhibit current

Rise time

Fall time

V inh = 0

depending on I o

– 400

μA

P o nom is not exceeded.

Programmable Output Voltage (R-Function)

As a standard feature, the converters offer an adjustable

output voltage, identified by letter R in the type

I inh [mA]

2.0

1.6

1.2

V inh = 0.8 V

V inh = 2.4 V

designation. The control input R (pin 16) accepts either a

control voltage V ext or a resistor R ext to adjust the desired

output voltage. When input R is not connected, the output

voltage is set to V o nom .

a) Adjustment by means of an external control voltage V ext

between pin 16 (R) and pin 14:

0.8

0.4

V o = on

V o = off

The control voltage range is 0 – 2.75 VDC and allows an

output voltage adjustment in the range of approximately

0 – 110% V o nom .

V ext ≈ –––––– ? 2.5 V

–0.4

–0.8

–50

–30

–10

0 10

V inh [V]

V o

V o nom

b) Adjustment by means of an external resistor:

Fig. 19

Typical inhibit current I inh versus inhibit voltage V inh

Depending upon the value of the required output voltage

the resistor shall be connected

V o / V o nom

06001

either: Between pin 16 and pin 14 ( V o < V o nom ) to

achieve an output voltage adjustment range of approxi-

mately 0 – 100% V o nom .

0.1

t r

t f

or: Between pin 16 and pin 12 ( V o > V o nom ) to achieve an

output voltage adjustment range of 100 – 110% V o nom .

Inhibit

Warning:

– V ext shall never exceed 2.75 V.

Fig. 20

Output response as a function of inhibit control

– The value of R ' ext shall never be less than the lowest

value as indicated in table R ' ext (for V 0 > V 0 nom ) to

prevent the converter from damage!

BCD20001-G Rev AC, 16-Dec-2010

Page 13 of 29

www.power-one.com

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式