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參數(shù)資料
| 型號： | SI9150 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Synchronous Buck Converter Controller |
| 中文描述： | 同步降壓轉(zhuǎn)換器控制器 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 62K |
| 代理商： | SI9150 |
Si9150
Vishay Siliconix
Document Number: 70020
S-40752—Rev. F, 19-Apr-04
www.vishay.com
1
Synchronous Buck Converter Controller
FEATURES
6- to 16.5-V Input Range (Si9150CY)
Voltage-Mode PWM Control
Low-Current Standby Mode
Enable Control
Dual 100-mA Output Drivers
2% Band Gap Reference
Multiple Converters Easily Synchronized
Over-Current Protection
DESCRIPTION
The Si9150 synchronous buck regulator controller is ideally
suited for high-efficiency step down converters in
battery-powered equipment. Combined with the Si9943DY
MOSFET half-bridge, a 90% efficient, 7.5-W, 3.3-V or 5-V
power supply can be implemented using standard surface-
mount assembly techniques. The wide input range allows
operation from NiCd or NiMH battery packs using six to ten
cells.
Over-current protection is achieved by sensing the on-state
voltage drop across the high side p-channel MOSFET, which
eliminates the need for a current sense resistor.
Duty ratios of 0 to 100% and switching frequencies up to 300
kHz are possible. The IC can be disabled by pulling EN low
(I
DD
= 100 A), or the 2.5-V reference can be maintained, with
all other functions disabled, by pulling STBY low (I
DD
=
500 A).
The Si9150 is available in both standard and lead (Pb)-free
14-pin SOIC and rated for the commercial temperature range
of 0 to 70 C (C suffix), and the industrial temperature range of
40 to +85 C (D suffix).
FUNCTIONAL BLOCK DIAGRAM
Synchronous Buck Regulator Controller
STBY
SS
GND
I
SENSE
+
0.5 V
V
DD
EN
P-GATE
R
Q
S
Oscillator,
Comparators,
& Error Amp
Reference
Generator
Power Down
UVLO
+
+
Ref
Gen
OSC
R
Q
S
Break-
Before-
Make
Logic
N-GATE
1 V
SYNC
C
T
R
T
COMP
FB
V
REF
Error
Amplifier
4.7 V
500 k
Strobe
V
DD
Current
Limit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20 A
5 W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SI9150CY | Synchronous Buck Converter Controller |
| SI9150CY-T1 | GT 8C 6#12 2#0 SKT RECP WALL |
| SI9150CY-T1-E3 | Synchronous Buck Converter Controller |
| SI9150DY | Synchronous Buck Converter Controller |
| SI9150DY-T1 | Synchronous Buck Converter Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI9150CY | 功能描述:DC/DC 開關(guān)控制器 Sync Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SI9150CY-E3 | 功能描述:DC/DC 開關(guān)控制器 Sync Buck Converter Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SI9150CY-T1 | 功能描述:DC/DC 開關(guān)控制器 Sync Buck Converter Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SI9150CY-T1-E3 | 功能描述:DC/DC 開關(guān)控制器 Sync Buck Converter Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SI9150DY | 功能描述:DC/DC 開關(guān)控制器 Sync Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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