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參數(shù)資料
| 型號(hào)： | HV9606 |
| 廠商： | Supertex, Inc. |
| 英文描述： | HV9606 Current-Mode PWM Controller with Supervisor |
| 中文描述： | HV9606電流模式PWM控制器，帶有監(jiān) |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大小： | 565K |
| 代理商： | HV9606 |
1 4/15/2002-R.L2
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com
HV9606
Initial Release
HV9606 Current-Mode PWM Controller with Supervisor
Features
Synchronous Forward, Forward, and Flyback Controller
Lowest External Parts Count, Smallest Magnetics
Eliminates Bootstrap Transformer Winding
Supervisor Circuit Reduces Output Capacitance* up to 40%
Supervisor Circuit Functions as
μ
P Supply Monitor and POR
15V to 250V Start-Up Regulator with START/STOP Control
<1mA Operating, <6
μ
A Standby Input Current
V
Powered Operation down to 2.9V
Charge Pump Gate Drive Supply
Programmable Soft Start
Under Voltage Lockout with Programmable Hysteresis
<50% Duty Cycle Operation
15kHz to 400kHz Fixed Frequency PWM Operation
Fault Tolerant Peer-to-Peer Synchronization
Precision
!
1% Band Gap Voltage Reference
Current Sense Leading Edge Blanking
Small SSOP-20 Footprint
*For short duration line loss, supervisor disables soft start if output
within tolerance when V
IN
returns and thus reduces holdup
requirements.
Applications
Powered Ethernet and VoIP Terminals
Cable Modems and Amplifiers
ISDN Network Terminations, Terminals and Adapters
Network Equipment
Servers, PCs and Peripheral Equipment
Telecommunication Systems and Terminals
Distributed Board Mounted Power
Battery Backup Systems
Portable Power Applications
Automotive and Heavy Equipment
Typical Application Circuit
General Description
The HV9606 PWM controller allows the design of high efficiency
(>90%) power supplies for distributed board mounted power (BMP)
applications. Due to its high frequency capability it can provide
high currents (20A @ 3.3V) with small transformers and due to its
low internal operating voltage and current is also able to achieve
high efficiencies in low power applications.
The HV9606 utilizes fixed frequency current mode control with duty
cycle internally limited to <50%. It supports both isolated and non-
isolated topologies and provides all the necessary functions to
implement a flyback, forward or synchronous forward converter
with a minimum of external parts. Due to its low V
DD
operation the
bootstrap magnetic winding is eliminated in non-isolated
topologies. An on chip charge pump generates the gate drive
voltage for driving an external N-channel MOSFET and eliminates
the need for clamping by offering 250V immunity to high voltage
transients common in telecom and network systems. It conforms
to the requirements of IEEE 802.3 Powered Ethernet and ETR-080
ISDN specifications.
The oscillator is programmable and provides fault tolerant peer-to-
peer synchronization to other similar circuits or master clock. The
chip draws almost no current (<6
μ
A @ V
< 20V) until the
programmable START/STOP thresholds of the start-up regulator
are satisfied. It can also be powered via the V
DD
pin, rather than
the V
IN
pin, in the range of 2.9V to 5.5V.
Other functions include leading edge current sense blanking,
programmable SOFT START, precision
!
1% band gap reference
and a SUPERVISOR CIRCUIT. The SUPERVISOR can provide
housekeeping functions such as
μ
P supply monitoring and reset,
soft start inhibit for rapid restart on short duration input voltage
interruption. It also minimizes input and output capacitance
requirements.
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VDD
START
STOP
Vin
REF
SS
SYNC
RT
SGND
PGND
STATUS
SENSE
FB
COMP
NI
CA
CB
VX2
GATE
CS
H
To SYNC pin of other HV9606 PWMs.
+48V
GND
+3.3V
GND
To uP
RESET
Pin.
R1
R2
R3
R4
C1
C2
C3
C4
C6
C5
C7
C8
C9
C10
R5
R6
R7
R8
R9
M1
T1
D1
Q1
R10
10W Non-Isolated 48V to 3.3V Flyback Converter
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HV9606DB1 | Current-Mode PWM Multiple Output Flyback Converter |
| HV9606SP | HV9606 Current-Mode PWM Controller with Supervisor |
| HV9606X | HV9606 Current-Mode PWM Controller with Supervisor |
| HV9808 | 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) |
| HV9708 | 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(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HV9606DB1 | 功能描述:電源管理IC開發(fā)工具 HV9606 Demo Brd RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| HV9606DB2 | 功能描述:電源管理IC開發(fā)工具 HV9606 Demo Brd RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| HV9606SP | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Crnt Mode PWM RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| HV9606X | 制造商:SUPERTEX 制造商全稱:SUPERTEX 功能描述:HV9606 Current-Mode PWM Controller with Supervisor |
| HV9608 | 制造商:SUPERTEX 制造商全稱:SUPERTEX 功能描述:Active Clamp Current-Mode PWM Controller |
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