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參數(shù)資料
| 型號(hào)： | HV9606DB1 |
| 廠(chǎng)商： | Supertex, Inc. |
| 英文描述： | Current-Mode PWM Multiple Output Flyback Converter |
| 中文描述： | 電流模式PWM多路輸出反激變換器 |
| 文件頁(yè)數(shù)： | 5/9頁(yè) |
| 文件大?。?/td> | 565K |
| 代理商： | HV9606DB1 |
5 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
Functional Block Diagram
C
Vdd
UVLO
C
Start-Up
Regulator
Vdd
Vin
STOP
START
Regulator
Enable
RT
SYNC
Bandgap
Reference
Generator
Programable
Start/Stop
Circuit
FB
A
COMP
C
S
R
R
Q
CS
Supervisor
Circuit
Soft
Start
Circuit
Oscillator
SS
STATUS SENSE
GATE
Soft
Start
Enable
VREF
PGND
CLK
D
Q
Q
_
CLR
___
85 nS Delay
Voltage
Doubler
VX2
CA
CB
SGND
C
VX2
UVLO
Vdd
NI
R
R
Current
Limit
Oscillator
Enable
Functional Description
The HV9606 is composed of several functional blocks. The
operation of each of these blocks is described in the following
sections.
Programmable Start/Stop Control Circuit
(Programmable Under Voltage Lockout and Hysteresis)
The START/STOP control circuit is a novel version of a
programmable
under
voltage
hysteresis circuit. It is novel, because it requires zero power (other
than the current in the resistor divider) and keeps the startup
regulator shut down until the START threshold voltage is
exceeded, allowing the HV9606 to achieve its low input leakage
current of <6
μ
A.
One can think of the circuit as a transparent latch, such that its
output is high when the START pin is above its threshold voltage
and is latched when the STOP pin is at a voltage greater than the
START pin voltage. It is unlatched when the STOP pin voltage
falls below its threshold voltage and the START pin is below its
threshold voltage.
lockout
with
programmable
These operating conditions are met by using a voltage divider
consisting of three resistors (see typical application circuit). The
voltage drop on the resistor connected to ground controls the
START voltage and the additional voltage drop on the middle
resistor sets the hysteresis and controls the STOP voltage. Setting
the value of the middle resistor to zero results in zero hysteresis.
Provided the START and STOP pin input currents are negligible in
comparison to the chosen resistor divider current, the resistor
values may be calculated using the following equations:
R3 = (V
START
/ V
IN-Start
) x (V
IN-Stop
/ I
Resistor
)
R2 = [(V
STOP
/ V
IN-Stop
) x (V
IN-Stop
/ I
Resistor
)] – R3
R1 = (V
IN-Operating
/ I
Resistor
) - R2 - R3
Where:
V
START
is the START pin threshold voltage (nominal 7V)
V
STOP
is the STOP pin threshold voltage (nominal 7V)
V
IN-Start
is the input voltage at which starting is desired
V
IN-Stop
is the input voltage at which shutdown is desired
I
Resistor
is the resistor divider current (>1
μ
A)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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) |
| HV9808 | 32-Channel Serial To Parallel Converter With High Voltage Push-Pull Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HV9606DB2 | 功能描述:電源管理IC開(kāi)發(fā)工具 HV9606 Demo Brd RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)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(kāi)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(kāi)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(chēng):SUPERTEX 功能描述:HV9606 Current-Mode PWM Controller with Supervisor |
| HV9608 | 制造商:SUPERTEX 制造商全稱(chēng):SUPERTEX 功能描述:Active Clamp Current-Mode PWM Controller |
| HV9608TS | 制造商:SUPERTEX 制造商全稱(chēng):SUPERTEX 功能描述:Active Clamp Current-Mode PWM Controller |
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