Rohm Switching Regulator Series User Manual

Switching Regulator Series
Step-Down DC/DC Converter
BD9E101FJ-LB Evaluation Board
BD9E101FJ-EVK-001
BD9E101FJ-EVK-001 Evaluation board delivers an output 5.0 volts from an input 7.2 to 36 volts using BD9E101FJ-LB, a synchronous rectification
step-down DC/DC converter integrated circuit, with output current rating of maximum 1A. The output voltage can be set by changing the external
parts of circuit and the loop-response characteristics also can be adjusted by the phase compensation circuit.
Performance specification
These are representative values, and it is not a guaranteed against the characteristics.
V = 24V, V
IN OUT
Parameter
Input Voltage Range
Output Voltage
Output Voltage Setting Range
Output Current Range
Loop Band Width
Phase Margin
Input Ripple Voltage
Output Ripple Voltage
Output Rising Time
Operating Frequency
Maximum Efficiency
(NOTE1) When the output voltage is 5.0V, it is 7.2V by limiting ratio of the maximum duty.
(NOTE2) However, (V
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= 5.0V, Unless otherwise specified.
Min
7.0
V ×0.0855
IN
0
×0.0855) ≥ 1.0V
IN
Typ Max
(NOTE1)
36
5.0
(NOTE2)
V ×0.7
IN
1
31.6
77.1
90
60
3
570
85.4
1/10
User's Guide
Units Conditions
V
R1=12kΩ, R2=3kΩ
V
V
A
kHz
degrees
mVpp I = 1A
O
mVpp I = 1A
O
ms
kHz
% I = 0.85A
O
No. 60UG012E Rev.003
APR.2017