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參數資料
| 型號： | PQ60120QZB33PYS-G |
| 廠商： | SYNQOR INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 400 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, QUARTER BRICK PACKAGE-8 |
| 文件頁數： | 13/13頁 |
| 文件大?。?/td> | 2197K |
| 代理商： | PQ60120QZB33PYS-G |
Product # PQ60120QZB33
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005704 Rev. C
01/20/11
Page 9
Technical
Specification
PQ60120QZB33
Applications Section
BASIC OPERATION AND FEATURES
The PowerQor Zeta series converter uses a two-stage power
conversion topology. The first stage keeps the output voltage
constant over variations in line, load, and temperature. The
second stage uses a transformer to provide the functions of
input/output isolation and voltage step-down to achieve the
low output voltage required.
Both the first stage and the second stage switch at a fixed
frequency for predictable EMI performance. Rectification of
the transformer’s output is accomplished with synchronous
rectifiers. These devices, which are MOSFETs with a very low
on-state resistance, dissipate significantly less energy than
Schottky diodes, enabling the PowerQor converter to achieve
high efficiency.
Dissipation throughout the converter is so low that it does not
require a heatsink for operation. Since a heatsink is not required,
the PowerQor converter does not need a metal baseplate or
potting material to help conduct the dissipated energy to the
heatsink. As an open frame module, the PowerQor converter can
be built more simply and reliably using high yield surface mount
techniques on a PCB substrate.
The PowerQor series of Quarter-brick converters uses the
industry standard footprint and pin-out configuration.
CONTROL FEATURES
REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, per-
mits the user to control when the converter is on or off. This
input is referenced to the return terminal of the input bus,
Vin(-). The converter is available with either positive or nega-
tive logic used for the ON/OFF input.
In the positive logic version, the ON/OFF input is active high
(meaning that a high voltage turns the converter on). In
the negative logic version, the ON/OFF signal is active low
(meaning that a low voltage turns the converter on). Figure A
details five possible circuits for driving the ON/OFF pin.
REMOTE SENSE(+) (Pins 7 and 5): The SENSE(+) inputs
correct for voltage drops along the conductors that connect
the converter’s output pins to the load.
Pin 7 should be connected to Vout(+) and Pin 5 should
be connected to Vout(-) at the point on the board where
regulation is desired. If these connections are not made, the
converter will deliver an output voltage that is slightly higher
than its specified value.
Note:
The output over-voltage protection circuit senses the
voltage across the sense leads (pins 7 and 5) to determine
when it should trigger, not the voltage across the converter’s
output pins (pins 8 and 4).
OUTPUT VOLTAGE TRIM (Pin 6):
The TRIM input permits
the user to adjust the output voltage across the sense
leads up or down according to the trim range specifications.
SynQor uses industry standard trim equations.
To decrease the output voltage, the user should connect a resis-
tor between Pin 6 (TRIM) and Pin 5 (SENSE(
–) input). For a
desired decrease of the nominal output voltage, the value of the
resistor should be:
Rtrim-down =
(511) _ 10.22 kW
D%
where
D% = Vnominal – Vdesired x 100%
Vnominal
Open Collector Enable Circuit
Remote Enable Circuit
Direct Logic Drive
Negative Logic
(Permanently
Enabled)
(Permanently
Enabled)
ON/OFF
Vin(_
)
ON/OFF
Vin(_
)
ON/OFF
5V
TTL/
CMOS
Vin(_
)
Vin(_
)
Positive Logic
ON/OFF
Vin(_
)
Figure A: Various circuits for driving the ON/OFF pin.
Applications Section
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