High-Speed Response Non-Isolated POL DC-DC Converter
4A/9.5A BSV-M Series
9. Protection against reverse connection for input power supply (example)
This product is a DC-DC converter with non-isolation between input and output to have a positive
polarity step down to a positive polarity. This product will be damaged if erroneously connected with
reverse input polarity. To cope with possible reverse connection, add a protection circuit as shown in the
following figure.
The following is an example using a fuse and a diode.
FUSE
4
2
+Vin
+Vout
7
8
1
HS
NC
BSV-M
6
5
D1
+Vin
P-Good
On/Off
Load
Trim
GND
3
10. Over voltage protection circuit (example)
This product has no built-in function for over voltage protection.
If the product is damaged for any reason, DC input voltage will be output as is. To prepare for the
damage by over voltage mode, add an input cutoff circuit as shown in the following figure.
FUSE
4
2
+Vin
+Vout
7
8
HS
NC
BSV-M
Over Voltage
6
5
SCR
+Vin
P-Good
On/Off
過電圧
Detection
Load
検出回路
Circuit
1
Trim
GND
3
Note 1: ON/OFF control does not function in case of overvoltage mode damage.
Note 2: ON/OFF function on the power supply side can be used, if any.
Note 3: Allow enough capacity for DC power supply for a fuse to blow.
11
BDD20150226
BELLNIX [ Bellnix ]
