- 您现在的位置：买卖IC网 > PDF目录166448 > BQ50120QTA20NKC-G (SYNQOR INC) 1-OUTPUT 240 W DC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | BQ50120QTA20NKC-G |
| 厂商： | SYNQOR INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 240 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, QUARTER BRICK PACKAGE-5 |
| 文件页数： | 12/12页 |
| 文件大小： | 5072K |
| 代理商： | BQ50120QTA20NKC-G |
Product # BQ50120QTA20
Phone 1-888-567-9596
Doc.# 005-2BQ512J Rev. F
03/26/10
Page 9
Input:
Output:
Current:
PPackage:
ackage:
42-53 V
12 V
20 A
Quarter-brick
T
Technical S
echnical Specification
pecification
Output Current Limit: The output of the BusQor module is
electronically protected against output overloads. When an over-
load current greater than the “DC Current-Limit Inception” speci-
fication is drawn from the output, the output shuts down to zero
volt in a period of 40s typical (see Figure C). The shutdown
period lasts for a typical period of 250ms (Figure D) after which
the BusQor tries to power up again. If the overload persists, the
output voltage will go through repeated cycles of shutdown and
restart with a duty cycle of 40s (On) and 250ms (Off) respec-
tively. The BusQor module returns (auto resetting) to normal oper-
ation once the overload is removed. The BusQor is designed to
survive in this mode indefinitely without damage and without
human intervention.
Output Short Circuit Protection: When the output of the
BusQor module is shorted, a peak current of typically 40 A will
flow into the short circuit for a period of about 300s. The out-
put of the BusQor will shutdown to zero volts for the same period
(Figure D). The shutdown period lasts for a period of 250ms, at
the end of which the BusQor module tries to power up again. If
the short circuit persists, the output voltage will go through repeat-
ed cycles of shutdown and restart with a duty cycle of 350s
(On) and 250ms (Off) respectively. The BusQor module returns
(auto resetting) to normal operation once the short circuit is
removed. The BusQor is designed to survive in this mode indef-
initely without damage and without human intervention.
In the Auto resetting mode, also referred to as “Hiccup” mode,
the power drawn from the 48V input is about 5 Watts, most of
which is dissipated into the external fault. It is important that cop-
per traces and pads from the output circuit be designed to with-
stand the short term peaks, although the average current into the
fault may be as low as 50mA typical. See Figure 17 for appro-
priate waveform.
Over-Temperature Shutdown: A temperature sensor on the
converter senses the average temperature of the module. The
thermal shutdown circuit is designed to turn the converter off
when the temperature at the sensed location reaches the Over-
Temperature Shutdown value. It will allow the converter to turn
on again when the temperature of the sensed location falls by the
amount of the Over-Temperature Shutdown Restart Hysteresis
value.
APPLICATION CONSIDERATIONS
Start-Up Inhibit Period: Figure E details the Start-Up Inhibit
Period for the BusQor module. At time t0, when Vin is applied
with On/Off pin asserted (enabled), the BusQor output begins to
build up. Before time t1, when the input voltage is below the UVL
threshold, the unit is disabled by the Input Under-Voltage Lockout
feature. When the input voltage rises above the UVL threshold,
the Input Under-Voltage Lockout is released, and a typical Startup
Inhibit Period of 350s is initiated. The output builds up to 90%
or higher of the nominal voltage and stabilizes at the nominal
value of 12V in a period of 420s typical. The rise time from 0V
to 90% is 70s typical.
At time t2, when the On/Off pin is de-asserted (disabled), the
BusQor output instantly drops to 0V. Fall time from 12V to 0V is
dependent on output capacitance and any parasitic trace induc-
tance in the output load circuit.
At time t3, when the On/Off pin is re-asserted (enabled), the
BusQor module output begins to build up after the inhibit period
of 350s typical.
Refer to the Control Features section of the data sheet for details
on enabling and disabling methods for N and P logic type mod-
ules.
Output
Current
Output
Voltage
12V
25A
20A
40s
0V
Figure C: Output Overload protection diagram (not to scale)
Output
Current
Output
Voltage
<12V
40A peak
250ms
300s
0V
Figure D: Output Short Circuit and Auto-Resetting protection
diagram (not to scale)
Time
相关PDF资料 |
PDF描述 |
|---|---|
| BQ50120QTA20NRS-G | 1-OUTPUT 240 W DC-DC REG PWR SUPPLY MODULE |
| BRF34A | NPN SILICON TRANSISTOR FOR LOW NOISE RF BROADBAND AMPLIFIER |
| BRTFHPE05BKSX | 5 CONTACT(S), FEMALE, COMBINATION LINE CONNECTOR |
| BRTFHPE05GYSX | 5 CONTACT(S), FEMALE, COMBINATION LINE CONNECTOR |
| BRTFHPE05WHDX | 5 CONTACT(S), FEMALE, COMBINATION LINE CONNECTOR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| BQ50120QTA20NKS | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
| BQ50120QTA20NNC | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
| BQ50120QTA20NNS | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
| BQ50120QTA20NRC | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
| BQ50120QTA20NRS | 制造商:SYNQOR 制造商全称:SYNQOR 功能描述:Quarter-brick DC Bus Converter |
发布紧急采购，3分钟左右您将得到回复。