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參數(shù)資料
| 型號： | HV9123 |
| 廠商： | Supertex, Inc. |
| 英文描述： | High-Voltage Current-Mode PWM Controller |
| 中文描述： | 高電壓電流模式PWM控制器 |
| 文件頁數(shù)： | 7/7頁 |
| 文件大?。?/td> | 325K |
| 代理商： | HV9123 |
7
HV9120/HV9123
1
8
4
5
6
7
16
9
15
14
13
12
11
10
1
8
2
3
4
5
6
7
16
9
15
14
13
12
11
10
BIAS
FB
COMP
Reset
Shutdown
V
REF
Discharge
OSC In
Error Amplifier
The error amplifier in the HV912x is a true low-power differential
input operational amplifier intended for around-the-amplifier com-
pensation. It is of mixed CMOS-bipolar construction: A PMOS
input stage is used so the common-mode range includes ground
and the input impedance is very high. This is followed by bipolar
gain stages which provide high gain without the electrical noise of
all-MOS amplifiers. The amplifier is unity-gain stable.
Current Sense Comparators
The HV912x uses a true dual comparator system with indepen-
dent comparators for modulation and current limiting. This allows
the designer greater latitude in compensation design, as there are
no clamps (except ESD protection) on the compensation pin. Like
the error amplifier, the comparators are of low-noise BiCMOS
construction.
Remote Shutdown
The shutdown and reset pins of the HV912x can be used to
perform either latching or non-latching shutdown of a converter as
required. These pins have internal current source pull-ups so they
can be driven from open-drain logic. When not used they should
be left open, or connected to V
DD
.
Output Buffer
The output buffer of the HV912x is of standard CMOS construc-
tion (P-channel pull-up, N-channel pull-down). Thus the body-
drain diodes of the output stage can be used for spike clipping if
necessary, and external Schottky diode clamping of the output is
not required.
Detailed Description
(continued)
+V
IN
NC
NC
Sense
Output
–
V
IN
V
DD
OSC Out
Pinout
16 Pin SOIC
top view
Note: Pins 2 and 3 are removed
16 Pin Dip Package
top view
BIAS
FB
COMP
Reset
Shutdown
V
REF
Discharge
OSC In
+V
IN
Sense
Output
–
V
IN
V
DD
OSC Out
19
20
1
2
3
18
17
16
15
14
13
12
11
10
9
4
5
6
7
8
FB
BIAS
NC
NC
+V
IN
NC
Discharge
OSC In
OSC Out
V
DD
N
S
O
N
–
V
I
C
R
S
N
V
R
20-pin PJ Package
top view
1235 Bordeaux Drive, Sunnyvale, CA 94089
TEL: (408) 744-0100
FAX: (408) 222-4895
www.supertex.com
11/12/01
2001 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited.
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PDF描述 |
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| HV9123NG | High-Voltage Current-Mode PWM Controller |
| HV9123P | High-Voltage Current-Mode PWM Controller |
| HV9123X | High-Voltage Current-Mode PWM Controller |
| HV9221 | High Frequency Multi-Function Current Mode PWM Controller(輸入范圍15V-450V，高頻多功能電流型脈寬調(diào)制控制器) |
| HV9308 | 32-Channel Serial To Parallel Converter With High Voltage Push-Pull Outputs(最大輸出電壓80V，帶推挽輸出的32通道低壓串行到高壓并行轉(zhuǎn)換器) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HV9123C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
| HV9123NG | 功能描述:電流型 PWM 控制器 HVCMOS 450V 2% Ref RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| HV9123NG-G | 功能描述:電流型 PWM 控制器 HVCMOS 450V 2% Ref RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| HV9123NG-G M901 | 制造商:Supertex Inc 功能描述:Switchmode PWM Controller |
| HV9123NG-G M934 | 制造商:Supertex Inc 功能描述:Switchmode PWM Controller |
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