BP 2101-7RG POWER ONE, BP 2101-7RG Datasheet - Page 6

• Manufacturer Part Number: BP 2101-7RG
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of BP 2101-7RG

• Input Voltage: 24V
• Screening Level: Commercial
• Operating Temperature Min Deg. C: -25C
• Operating Temperature Max Deg. C: 71C
• Product Length (mm): 164mm
• Product Depth (mm): 111mm
• Product Height (mm): 19.8mm
• Mounting Style: Din-Rail
• Pin Count: 15
• Number Of Outputs: 2
• Lead Free Status / RoHS Status: Compliant

Functional Description
The power supplies are equipped with two independent
flight-forward converters, switching 180° phase-shifted to
minimize the ripple current at the input. They use primary and
secondary control circuits in hybrid technology. The two
converters, called "powertrains" (PT), each generate either a
single output with synchronous rectifier or two isolated
outputs, one fully regulated and the other one tracking (semi-
regulated), thus providing up to four output voltages. In some
models, both outputs of a powertrain are connected in parallel
internally.
The highly efficient input filter together with very low input
capacitance causes very low and short inrush current. After
transformer isolation and rectification the output filter reduces
ripple and noise to a minimum without affecting the dynamic
response. Outputs 3 and 4, if available, are tracking (semi-
regulated) and rely upon the close magnetic coupling of the
transformer and the output inductor together with the circuit
symmetry for their voltage regulation. A current limitation is
located on the primary side of each powertrain limiting the
total output current from that powertrain in overload
Fig. 7
Block diagram. Powertrains PT1 and PT2 have isolated outputs.
Pin allocation see table 12
BCD20010-G Rev AC, 26-Aug-09
i
Y
Input filter
generator
converter
Auxiliary
Clock
®
ON/OFF control of
duty cycle limiter,
PWM controller,
Primary options
non linear FF,
sync. rectifier
Page 6 of 25
conditions. This allows flex power operation of the outputs
from each powertrain. All outputs can either be connected in
series or in parallel; see Electrical Output Data.
An auxiliary converter provides the bias voltages for the
primary and secondary referenced control logic and the
option circuits. An oscillator generates a clock pulse of
307±1% kHz, which is fed to the control logic of each
powertrain. The pulsewidth modulation and the magnetic
feedback are provided by special ASICs. The converter is
only enabled, if the input voltage is within the operating
voltage range.
Double-output powertrains are equipped with a suppressor
diode and an independant monitor sensing the output voltage
of the tracking output. It influences the contol logic in order to
reduce via the pulse width the voltages of both outputs.
Single-output powertrains are protected by a suppressor
diode.
The temperature of the heat sink is monitored and causes the
converter to disable the outputs, until the temperature drops;
then the converter will automatically resume.
Secondary options
double-output
Error amplifier,
power trains
90 – 194 Watt DC-DC Converters
o
2 x in
monitor
03107c
PT1
PT1
PT2
PT2
P Series Data Sheet
R
filter PT1
filter PT2
D, i, T
Output
Output
www.power-one.com
Y
Y
o4
o2
o3
o1