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參數(shù)資料
| 型號(hào)： | SQM48T20015-NBB0G |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, ONE-EIGHTH BRICK PACKAGE-8 |
| 文件頁(yè)數(shù)： | 31/33頁(yè) |
| 文件大小： | 404K |
| 代理商： | SQM48T20015-NBB0G |
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MCD10208 Rev. 1.0, 08-Jul-10
Page 7 of 33
www.power-one.com
SQM48T/S20 DC-DC Converter Data Sheet
36-75 VDC Input; 1.2-3.3 VDC @ 20A Outputs
Start-up Information (using negative ON/OFF)
Scenario #1: Initial Start-up From Bulk Supply
ON/OFF function enabled, converter started via application
of VIN. See Figure F.
Time
Comments
t0
ON/OFF pin is ON; system front end power is
toggled on, VIN to converter begins to rise.
t1
VIN crosses Under-Voltage Lockout protection
circuit threshold; converter enabled.
t2
Converter begins to respond to turn-on
command (converter turn-on delay).
t3
Converter VOUT reaches 100% of nominal value.
For this example, the total converter start-up time (t3- t1) is
typically 3 ms.
Scenario #2: Initial Start-up Using ON/OFF Pin
With VIN previously powered, converter started via
ON/OFF pin. See Figure G.
Time
Comments
t0
VINPUT at nominal value.
t1
Arbitrary time when ON/OFF pin is enabled
(converter enabled).
t2
End of converter turn-on delay.
t3
Converter VOUT reaches 100% of nominal value.
For this example, the total converter start-up time (t3- t1) is
typically 3 ms.
Scenario #3: Turn-off and Restart Using ON/OFF Pin
With VIN previously powered, converter is disabled and
then enabled via ON/OFF pin. See Figure H.
Time
Comments
t0
VIN and VOUT are at nominal values; ON/OFF pin
ON.
t1
ON/OFF pin arbitrarily disabled; converter output
falls to zero; turn-on inhibit delay period (100 ms
typical) is initiated, and ON/OFF pin action is
internally inhibited.
t2
ON/OFF pin is externally re-enabled.
If (t2- t1) ≤ 100 ms, external action of
ON/OFF pin is locked out by start-up inhibit
timer.
If (t2- t1) > 100 ms, ON/OFF pin action is
internally enabled.
t3
Turn-on Inhibit delay period ends. If ON/OFF pin
is ON, converter begins turn-on; if off, converter
awaits ON/OFF pin ON signal; see Figure G.
t4
End of converter turn-on delay.
t5
Converter VOUT reaches 100% of nominal value.
For the condition, (t2- t1) ≤ 100 ms, the total converter start-
up time (t5- t2) is typically 103 ms. For (t2- t1) > 100 ms,
start-up will be typically 3 ms after release of ON/OFF pin.
VIN
ON/OFF
STATE
VOUT
t
t0
t1 t2
t3
ON
OFF
Fig. F: Start-up scenario #1.
ON/OFF
STATE
VOUT
t0
t1 t2
t3
ON
OFF
VIN
t
Fig. G: Start-up scenario #2.
ON/OFF
STATE OFF
ON
VOUT
t0
t2
t1
t5
VIN
t
t4
t3
100 ms
Fig. H: Start-up scenario #3.
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相關(guān)代理商/技術(shù)參數(shù) |
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| SQM48T20015-NBBP | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 1.5V 20A 8PIN QUARTER-BRICK - Bulk |
| SQM48T20015-NBBPG | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 1.5V 20A - Bulk |
| SQM48T20015-NBC0 | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 1.5V 20A - Bulk |
| SQM48T20015-NBC0G | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 1.5V 20A - Bulk |
| SQM48T20015NDB0 | 制造商:DiDt 功能描述: |
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