bsv-1.5s12r0h XP Power Limited, bsv-1.5s12r0h Datasheet - Page 35

• Manufacturer Part Number: bsv-1.5s12r0h
• Description: Pol Dc-dc Converter
• Manufacturer: XP Power Limited

8. Usage
8-1. Standard connection circuit
8-2. ON/OFF Control
3.3V Input
5.0V Input
HIGH SPEED LOAD RESPONSE, OUTPUT VOLTAGE SETTING ACCURACY±1% POL DC-DC Converter
more of the heat radiation is done from the GND pin(5, 8pin) and the rest is done from the +Vin pin and +Vout pin.
Take space of the pattern as much as possible and design the board to make radiation easy. (Please use that
surface temperature of converter’s PCB will not exceed 100°C.)
to the GND line.
is a possibility that a higher voltage than the rating voltage may be output.
problem.
Note 1) It is a prerequisite for this product to be mounted onto a board, thereby heat relation is done. 70% or
Note 2) When not using the On/Off control, keep the On/Off pin open.
Note 3) P-Good pin is open-drain. If using P-Good function, please pull up to the input voltage at the resistor.
Note 4) When not adjusting the output, keep the trim pin open.
Note 5) GND pin (5, 8pin) is connect inside, however to secure the performance, use it with the 2 pins connected
Note 6)Be sure to connect the sense pin and output pin on the board. Unless the sense pin is connected, there
Note 7) Do not wire a pattern right under the converter (first layer). For other layers wiring a pattern will be no
Recommended Capacitor
C1=47μF
C2=2.2μF -200μF
C1 : It is unnecessary if impedance of the power supply on the input side is low enough and the power supply on
C2 : The converter will operate without C2 because the output capacitor has built in, however, it is necessary to
ON/OFF Pin(9pin)-GND Pin(8pin) Open or High（Above 2.6V） ON
ON/OFF Pin(9pin)-GND Pin(8pin) Short or Low（Below 0.65V） OFF
ON/OFF Pin(9pin)-GND Pin(8pin)Open or High（Above 3.75V） ON
ON/OFF Pin(9pin)-GND Pin(8pin) Short or Low（Below0.9V） OFF
By using the ON/OFF control function, ON/OFF of the output without connecting and disconnecting the input
can be controlled. ON/OFF Pin has been connected with +Vin terminal internally by the resistance of 30kΩ.
When not using the ON/OFF control, keep the ON/OFF pin open.
input side is connected by the enough thick and short line, however, it is necessary if the impedance is high.
Use ones with low ESR such as organic semiconductor solid capacitor, multilayer ceramic capacitor
satisfy with the electric characteristic (Ripple Noise). The connecting to the load side will make noise
decrease. Use a multilayer ceramic capacitor.
+Vin
DC-DC Converter
C1
on/off
+Vin
PG
SW Open=On
Short=Off
1
2
9
BSV-1.8S9R5HE
R1:Vout Down Set Resistor
8
GND
5
GND
4
3
7
6
+Sense
+Vout
Trim
NC
R1
C1：47μF
C2：22μF
C2
Load
BSV-HE Series
BDD20090116
7