GPBW52V04R Datasheet, PDF (3/7 Pages) Galaxy Power, Inc. – BOLERO HV Series 48V Input, 52VDC, 4A Output

Application Notes
CoolConverter^™ Family
Galaxy’s COOLCONVERTERS^™ feature:
• Single-stage power conversion architecture, control, and
magnetic design allow unprecedented power density and
efficiency in an isolated power supply.
• An advanced microcontroller reduces parts count while
adding features, performance, and flexibility in the design.
Protection and Control
Valid Input Voltage Range:
The converter measures the input voltage and will
not allow operation outside of the input voltage
specification. As shown by the graphs, hysteresis is
added to both the high and low voltage to prevent
the converter from turning on and off repeatedly
when the voltage is held near either voltage
extreme. At low line this assures the maximum
input current is not exceeded; at high line this
assures the semiconductor devices in the converter
are not damaged by excessive voltage stress.
ON/OFF Logic Option:
The ON/OFF control logic can be either Negative
(standard) or Positive to enable the converter. For
Negative logic, the ON/OFF pin is brought below
1.0V with respect to the –INPUT pin to enable the
converter. For Positive logic, the ON/OFF pin is
brought to greater than 4.0V with respect to the
Enable. To request the Positive logic version, add
the suffix (P) to the standard part number. The
Input pin has a built-in pull-up resistor of
approximately 100kΩ to +5.0V.
Bolero HV Series, Page 3
PRODUCT PREVIEw
Part No. 02–004 Rev. 1.9.5–102502