- 您现在的位置：买卖IC网 > PDF目录243306 > RP-21002D0-570K (DATA DEVICE CORP) SPECIALTY ANALOG CIRCUIT, DMA10 PDF资料下载
参数资料
| 型号： | RP-21002D0-570K |
| 厂商： | DATA DEVICE CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, DMA10 |
| 封装： | DIP-10 |
| 文件页数： | 10/12页 |
| 文件大小： | 135K |
| 代理商： | RP-21002D0-570K |
7
Data Device Corporation
www.ddc-web.com
RP-21000 Series
H-04/03-0
3) Normal off condition. STATUS 1 indicates the load is not
drawing current; STATUS 2 indicates the Power MOSFET
switch is off.
4) The SSPC has failed or STATUS 2 has shorted to the bias
supply. STATUS 1 indicates the load is not drawing cur-
rent; STATUS 2 indicates the Power MOSFET is on; the
SSPC should be off.
The next four conditions show the control input has commanded
the SSPC to be on:
5) The SSPC has failed or there is a short to ground on the
STATUS 2 output. STATUS 1 indicates the load is drawing
current but STATUS 2 indicates the Power MOSFET
switch is off.
6) Normal on condition. STATUS 1 indicates the load is
drawing current and STATUS 2 indicates the Power MOS-
FET switch is on.
7) Tripped condition. STATUS 1 indicates the load is not
drawing current and STATUS 2 indicates the Power MOS-
FET switch is off. The SSPC can be turned back on by
cycling the input control to a logic low and then back to a
logic high. If the excessive load has not been removed,
the SSPC will trip again.
8) No load current. STATUS 1 indicates the load is not draw-
ing current; STATUS 2 indicates the Power MOSFET
switch is on.
LOADS
The RP-21000 series can be used with any type of load: any
combination of inductive, resistive, and capacitive. In addition,
they can be used with dc motors and lamps.
Inductive loads require protecting the SSPC against voltage tran-
sients. See the section on Precautions above.
Capacitive loads require comparing the load in-rush current to
the trip curve of FIGURE 2. The inrush current must be below the
minimum trip curve to avoid tripping on the inrush current. The
inrush current can be calculated from the voltage rise time by
using i=C*dv/dt. Use the minimum rise time for calculation. The
minimum rise time is 25% of the maximum rise time specified in
FIGURE 3.
Capacitive loads can present a discharge problem. The SSPCs
use Power MOSFETs as the switching element. The MOSFETs
contain a parasitic diode which will be forward biased if the
SSPC power output terminal is more positive than the power
input terminal. If the 28 Vdc source is turned off while a charge
is held on the capacitive load, this diode will turn on and dis-
charge the load through the generator. The SSPC can carry a
reverse current equal to its forward current rating, however, the
dissipation with reverse current is up to seven times the forward
current dissipation for the same current. The user must ensure
that the maximum case temperature is not exceeded. The trip cir-
cuit will activate for reverse currents, however, the parasitic diode
will continue to conduct. When the power input terminals are
brought more positive than the power output terminals the power
controller will be off.
Incandescent lamps must be treated like capacitive loads for
inrush current. Since they do not store charge, they do not pre-
sent a discharge problem.
DC motors also must be treated like capacitive loads for in-rush
current. If they continue rotating when power is removed, reverse
current is a possibility due to back EMF. Voltage transients must
also be considered when using dc motors as loads on SSPCs.
HEATSINKING
The RP-21000 series are designed so that the junction temper-
ature can never exceed its maximum rating if the case tempera-
ture is held to 125°C or less. Heatsinking is recommended to
keep the case temperature to 125°C when operating at high
ambient temperatures. The SSPCs may be operated at room
temperature without a heat sink. The maximum ambient temper-
ature, TA, for operation without a heat sink is 125 - Pd x θCA
(where Pd is the power dissipation from TABLE 4 and θCA is the
thermal resistance from case-to-ambient from TABLE 3).
The same expression is used for finding the maximum ambient
temperature with a heat sink except
θ
CA is now the sum of the
thermal resistance from case-to-sink and from sink-to-ambient.
ADVANTAGES OF THE RP-21000 SERIES
NO OFFSET VOLTAGE
The Power MOSFET used in the DDC SSPCs have no inherent
voltage offset. The voltage drop across the Power MOSFET is
solely dependent on the current flowing through the device and
its "ON" resistance.
Bipolar transistors, on the other hand, have an inherent dc offset
voltage to which is added a voltage drop proportional to the
devices' "ON" resistance and the current flowing through it. It is
this inherent offset voltage that is missing from the power MOS-
FET. The Power MOSFET, in many applications, leads to a lower
voltage drop and power dissipation as an SSPC switch. In addi-
tion, the Power MOSFET’s driver logic requirements are much
simpler, especially when multiple MOSFETs are used as in the
SSPC product.
NO SECONDARY BREAKDOWN AND PARALLELING
SSPCS
A bipolar transistor has a set of current-voltage limits that form
an envelope that cannot be exceeded; this is known as the safe
operating area of the device. If this envelope is exceeded, local
hot spots will occur. These hot spots conduct currents more
readily then adjacent cool areas and tend to become hotter. This
thermal runaway leads to the ultimate destruction of the device;
called secondary breakdown.
相关PDF资料 |
PDF描述 |
|---|---|
| RP-21002D0-820Z | SPECIALTY ANALOG CIRCUIT, DMA10 |
| RP-21002D0-870Y | SPECIALTY ANALOG CIRCUIT, DMA10 |
| R1221N15XF-TR-FA | SWITCHING CONTROLLER, PDSO6 |
| R1221N20XD-TR-FA | SWITCHING CONTROLLER, PDSO6 |
| R1221N27XF-TR-FA | SWITCHING CONTROLLER, PDSO6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RP-21002D1-100 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Electronic Circuit Breaker |
| RP-21002D1-110 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Electronic Circuit Breaker |
| RP-21002D1-120 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Electronic Circuit Breaker |
| RP-21002D1-200 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Electronic Circuit Breaker |
| RP-21002D1-300 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Electronic Circuit Breaker |
发布紧急采购，3分钟左右您将得到回复。