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参数资料
| 型号： | YNL05S10015-003G |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-6 |
| 文件页数： | 20/23页 |
| 文件大小： | 399K |
| 代理商： | YNL05S10015-003G |
FEB 17, 2006 revised to NOV 03, 2006
Page 6 of 23
www.power-one.com
YNL05S100xy DC-DC Converter Data Sheet
3.0 to 5.5 VDC Input; 0.9 to 3.3 VDC @ 10 A Output
collector (open-drain) transistor can be used to drive
ON/OFF pin. This device must be capable of:
– sinking up to 1.2 mA at a low level voltage of
≤ 0.8 V
– sourcing up to 0.25 mA at a high logic level of
2.3 - 5.5 V.
When using open-collector (open-drain) transistor
with a negative logic option, add a pull-up resistor
(R*) to Vin as shown in Fig. C:
– 20 K, if the minimum Vin is 4.5 V
– 10 K, if the minimum Vin is 3.0 V
– 5 K, if the undervoltage shutdown at 2.05 - 2.15 V
is required.
Remote Sense (Pin 2)
The remote sense feature of the converter
compensates for voltage drops occurring only
between Vout pin (Pin 4) of the converter and the
load. The SENSE (Pin 2) pin should be connected at
the load or at the point where regulation is required
(see Fig. D). There is no sense feature on the output
GND return pin, where the solid ground plane should
provide a low voltage drop.
Vin
Rw
Rload
Vin
GND
ON/OFF
(Top View)
Converter
TRIM
SENSE
Vout
Y-Series
Fig. D: Remote sense circuit configuration.
The option without SENSE pin is available; see the
Part Numbering Scheme section for the ordering
information. However, if remote sensing is not
required, the SENSE pin must be connected to the
Vout pin (Pin 4) to ensure the converter will regulate
at the specified output voltage. If these connections
are not made, the converter will deliver an output
voltage that is slightly higher than the specified
value.
Because the sense lead carries minimal current,
large traces on the end-user board are not required.
However, the sense trace should be located close to
a ground plane to minimize system noise and ensure
optimum performance.
When utilizing the remote sense feature, care must
be taken not to exceed the maximum allowable
output power capability of the converter, which is
equal to the product of the nominal output voltage
and the allowable output current for the given
conditions.
When using remote sense, the output voltage at the
converter can be increased up to 0.5 V above the
nominal rating in order to maintain the required
voltage across the load. Therefore, the designer
must, if necessary, decrease the maximum current
(originally obtained from the derating curves) by the
same percentage to ensure the converter’s actual
output power remains at or below the maximum
allowable output power.
Output Voltage Adjust/Trim (Pin 3)
The output voltage can be adjusted up 10% or down
10% of its nominal output rating using an external
resistor. The converter without Trim feature is also
available; see the Part Numbering Scheme section
for the ordering information.
Rload
Vin
R T-INCR
Converter
Vin
GND
ON/OFF
SENSE
(Top View)
TRIM
Vout
Y-Series
Fig. E: Configuration for increasing output voltage.
To trim up the output voltage, refer to Fig. E. A trim
resistor, RT-INCR, should be connected between TRIM
pin (Pin 3) and GND pin (Pin 5) with value of:
For VO-NOM ≥ 1.2 V,
INT
INCR
T
R
)
V
-
(V
08
.
24
R
NOM
-
O
REQ
-
O
=
[k]
For VO-NOM = 1.0 V and 0.9 V,
INT
INCR
T
R
)
V
-
(V
21.07
R
NOM
-
O
REQ
-
O
=
[k]
where,
=
INCR
T
R
Required value of trim-up resistor [k]
=
REQ
O
V
Desired (trimmed) output voltage [V]
=
NOM
O
V
Nominal output voltage [V]
=
INT
R
Internal series resistor according to Table 1
[k]
Table 1: Internal series Resistors RINT
V0-NOM [V]
3.3 2.5 2.0 1.8 1.5 1.2 1.0 0.9
RINT [k]
59 78.7 100 100 100 59 30.1 5.11
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