Ultralow Noise, Ultracompact, Isolated type DC-DC Converter
b
1.5Watt BLA05 Series
4-3 Temperature derating
Natural cooling
BLA05-05S03
100
80
BLA05-12S12
BLA05-12W06
60
40
20
0
-40 -30 -20 -10
0
10
20
40
60
70
80
30
50
Ambient temperature (°C)
Note: at rated output
4-4 Measurement circuit
+Vin
+Vout
7
1
3
2
A
A
SW1
Open = Output ON
Short = Output OFF
Vin
C1
C2
BLA-S Series
ON/OFF
+
Load
V
V
SW2
Open:Vout=5V,12V
Short:Vout=5V→6V
12V→15V
SW1
5
-Vin
6
-Vout
Vadj
SW2
C2: 0.1μF（Multi layered ceramic capacitor）
C1: 10μF（Multi layered ceramic capacitor）
+Vin
+Vout
SW3
Open = Output ON
Short = Output OFF
1
3
2
7
5
4
A
A
C4
C5
Load
Load
V
V
Vin
ON/OFF
C3
SW4
BLA-W Series
+
V
Open:
Short:
Vout = ±12V
Vout = ±15V
SW3
A
-Vin
6
-Vout
Vadj
C4, C5: 0.1μF（Multi layered ceramic capacitor）
C3: 10μF（Multi layered ceramic capacitor）
SW4
Oscilloscope
(Measurement of
ripple noise)
C6
R1
Coaxial cable: 50Ω, 1.5m
R1: 51Ω
C6: 0.1μF
4
DC-DC Converter
BDD20170524_C01
BELLNIX [ Bellnix ]
