YNS05S10-0 POWER ONE, YNS05S10-0 Datasheet - Page 5

• Manufacturer Part Number: YNS05S10-0
• Description: Module DC-DC 1-OUT 0.7525V to 3.63V 10A 36W 6-Pin SMD T/R
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of YNS05S10-0

• Package: 6SMD
• Output Current: 10 A
• Output Voltage: 0.7525 to 3.63 V
• Input Voltage: 5 V
• Number Of Outputs: 1
• Output Power: 36 W

Operations
Input and Output Impedance
The Y-Series converter should be connected via a
low impedance to the DC power source. In many
applications, the inductance associated with the
distribution from the power source to the input of the
converter can affect the stability of the converter.
The use of decoupling capacitors is recommended in
order to ensure stability of the converter and reduce
input ripple voltage.
52 μF (low ESR ceramics) of input capacitance.
In a typical application, low - ESR tantalum or POS
capacitors will be sufficient to provide adequate
ripple voltage filtering at the input of the converter.
However,
100 - 200 μF are recommended at the input of the
converter in order to minimize the input ripple
voltage. They should be placed as close as possible
to the input pins of the converter.
The YNS05S10 has been designed for stable
operation with or without external capacitance. Low
ESR ceramic capacitors placed as close as possible
to the load (minimum 47 μF) are recommended for
improved transient performance and lower output
voltage ripple.
It is important to keep low resistance and low
inductance PCB traces for connecting load to the
output pins of the converter in order to maintain good
load regulation.
Fig. A shows the input voltage ripple for various
output voltages using four 47 μF input ceramic
capacitors. The same plot is shown in Fig. B with
one 470 μF polymer capacitor (6TPB470M from
Sanyo) in parallel with two 47 μF ceramic capacitors
at full load.
Fig. A: Input Voltage Ripple, C
MCD10193 Rev. 1.0, 21-Jun-10
140
120
100
80
60
40
20
0
0
very
1
low
Internally, the converter has
ESR
Vout [V]
IN
= 4x47 μF ceramic, full load.
2
ceramic
3.0-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 10 A
3
Vin=5.0V
Vin=3.3V
capacitors
4
Page 5 of 25
YNS05S10 DC-DC Converter Data Sheet
ON/OFF (Pin 1)
The ON/OFF pin is used to turn the power converter
on or off remotely via a system signal. There are two
remote control options available, positive logic
(standard option) and negative logic, with ON/OFF
signal referenced to GND. The typical connections
are shown in Fig. C.
To turn the converter on the ON/OFF pin should be
at a logic low or left open, and to turn the converter
off the ON/OFF pin should be at a logic high or
connected to Vin. See the Electrical Specifications
for logic high/low definitions.
The positive logic version turns the converter on
when the ON/OFF pin is at a logic high or left open,
and turns the converter off when at a logic low or
shorted to GND.
The negative logic version turns the converter on
when the ON/OFF pin is at a logic low or left open,
and turns the converter off when the ON/OFF pin is
at a logic high or connected to Vin.
The ON/OFF pin is internally pulled up to Vin for a
positive logic version, and pulled down for a negative
logic
Vin
Vin
CONTROL
INPUT
R* is for negative logic option only
Fig. B: Input Voltage Ripple, C
2 x 47 μF ceramic.
160
140
120
100
80
60
40
20
0
version.
0
Fig. C: Circuit configuration for ON/OFF function.
R*
www.power-one.com
GND
ON/OFF
Vin
A
1
TTL or
(Top View)
Converter
Y-Series
Vout [V]
2
IN
= 470 μF polymer +
CMOS logic gate,
SENSE
TRIM
Vout
3
Vin=5.0V
Vin=3.3V
4
Rload