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參數(shù)資料
| 型號(hào)： | SI9124DQ |
| 廠商： | Vishay Intertechnology,Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 500-kHz Push-Pull DC-DC Converter With Integrated Secondary Synchronous Rectification Control |
| 中文描述： | 500千赫推挽式直流與集成的次級(jí)同步整流控制DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大小： | 175K |
| 代理商： | SI9124DQ |
Si9124
Vishay Siliconix
New Product
www.vishay.com
2
Document Number: 72099
S-03638—Rev. B, 20-Mar-03
DESCRIPTION (CONTINUED)
Si9124 has advanced current monitoring circuitry to permit the
user to set the maximum current in the primary circuit. Such a
feature acts as protection against output shorts. Upon sensing
an overload condition, the converter is shut off for a period of
time and then soft-start cycle is re-initiated, achieving hiccup
mode operation. Current sensing is by means of a sense
resistor on the primary device. An integrated over-temperature
shutdown circuit also protects the system.
The 100-V depletion mode MOSFET integrated pre-regulator
circuit permits direct operation from input voltage with only one
series resistor during startup. The pre-regulator automatically
disconnects from the input supply when the output voltage is
established by means of a feedback winding from the filter
inductor.
Si9124 is available in
TSSOP-16
pin package. In order to
satisfy the stringent ambient temperature requirements,
Si9124 is rated to handle the industrial temperature range of
–40 to 85 C.
DETAILED BLOCK DIAGRAM
1.65 V
V
FF
-
+
Pre-Regulator
-
+
-
+
V
INDET
V
REF
V
IN
+
-
2.2 R
EP
-
+
PWM
Comparator
SS
-
+
CS2
CS1
Over Current Protection
GND
V
UVLO
V
UV
V
SD
V
CC
Hiccup
Mode Start
Driver
Control
and
Timing
OTP
OSC
R
OSC
Ramp
SEC_SYNC
PGND
OUT
A
SEC_SYNC
Driver
Primary B
Driver
Level
Shift
V
CC2
PGND
2
Si9124
Peak DET
R
I
V
REF
Error Amplifier
4I
Primary A
Driver
Gain
V
CC
V
CC
Figure 2.
8.8 V
550 mV
OUT
B
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI9124DQ-T1 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:500-kHz Push-Pull DC-DC Converter With Integrated Secondary Synchronous Rectification Control |
| SI9124DQ-T1-E3 | 制造商:Vishay Siliconix 功能描述:IC DRIVER PUSH PULL 9124 TSSOP16 |
| SI9130 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Pin-Programmable Dual Controller?Portable PCs |
| SI9130_11 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Pin-Programmable Dual Controller - Portable PCs |
| SI9130CG | 功能描述:電流型 PWM 控制器 Prog Dual Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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