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参数资料
| 型号： | RP-21203G1-800 |
| 厂商： | DATA DEVICE CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, XMA20 |
| 封装： | PLASTIC, GULLWING LEAD PACKAGE-20 |
| 文件页数： | 15/20页 |
| 文件大小： | 228K |
| 代理商： | RP-21203G1-800 |
4
Data Device Corporation
www.ddc-web.com
RP-21200
D-02/04-0
TABLE 3 notes:
1. All specifications are at 25°C unless otherwise specified. Maximum Rated
Current is defined as the current when the R1 current range programming pin is
shorted to the programming reference pin.
2. Control and Lockout operate the input optocoupler. They may be interchanged
which will invert their function. See FIGURE 2 for a schematic of this input structure.
3. Limits are shown when programmed to maximum instant trip level, and at the
maximum current rating setting. Limits are 33% of those shown when there are
no connections to R1, I2, and I3 programming pins (when at minimum current
range, but maximum instant trip range).
4. This means that the SSPC may be reset 1 ms after a trip has occurred.
However, if the cause of the trip has not been removed, the second trip will occur
faster than the first trip. This is an example of how the internal ‘thermal memory’
protects the wire. Also, repeated resetting and tripping must not occur faster than
30 ms after the first reset in order to prevent overheating of the SSPC.
5. DDC recommends using an external bleed resistor in situations that may not
tolerate leakage currents that will permit power-in VDC at the load.
6. Analytical Radiation Tolerance Estimate.
7. The STAR Series design incorporates series power supply resistors to protect
against latch-up damage.
8. During initial power-on @ Vbias ~ 3.5Vdc, a transient current pulse of up to
100mA above the Vbias Supply Current may be observed.
FUNCTIONAL DESCRIPTION
The RP-21200
STAR Series of programmable Solid-State Power
Controllers (SSPCs) are electronic circuit breakers and, as such,
are primarily intended to protect the wiring between the power
source and the load. They are designed to replace electro-
mechanical or thermal circuit breakers while providing the relia-
bility of solid-state electronics. Unlike circuit breakers, SSPCs
can easily interface with TTL/CMOS signals associated with
solid-state controllers, such as embedded microprocessors.
The Block Diagram in FIGURE 1 shows the various functional
blocks within the RP-212XXF1 series. The control side employs
buffers for the logic signals, which are isolated and level shifted
from the power side by optical isolation. On the power side are
the analog and digital circuits which drive the power MOSFET
switch, sense the switch’s current and provide programmability.
An internal DC-DC converter, powered by the control side 5 Volt
bias supply provides isolated power to the power side circuitry.
An optional analog Current Monitor output uses optical isolation,
and provides an analog voltage signal on the control side which
is proportional to the switch’s (load) current.
The
STAR Series has two TTL/CMOS compatible inputs. One
input is the Control Command.
A logic high on the Control
Command will turn on the power switch and a logic low will turn
it off. The other input is a Lockout Input which can be used to
provide safety during system maintenance. When the Lockout
Input is at a logic high, the SSPC is disabled and always off,
regardless of the state of the Control Command input. When the
Lockout input is at a logic low, the SSPC follows the state of the
Control Command.
The two TTL/CMOS compatible outputs, Status 1 and Status 2,
provide status information on the switch current (load current)
and switch state, respectively. Status 1 will be at a logic high
when the switch current is less than the programmed Load
Detection value - see FIGURE 4 for programming information.
When the switch current is greater than the programmed Load
Detection value, Status 1 will be at a logic low. Status 2 reflects
the state of the switch. When the switch is closed, Status 2 will
be at a logic high and when the switch is opened, Status 2 will
be at a logic low. The combination of the states of the Control
Command, Lockout Input, Status1 and Status 2 outputs provide
Built-In-Test (BIT) capability. TABLE 6 shows the possible status
combinations.
As in a circuit breaker, the SSPC will carry continuous current up
to a certain level without tripping. For the RP-21200 series, the
SSPC will not trip as long as the continuous current is less than
110% of the programmed current - see FIGURE 4 and TABLE 5
for programming information. The
STAR Series are guaranteed
to trip if the continuous current is greater than 145% of the pro-
grammed value.
Again, like a circuit breaker, the RP-21200
series can handle short duration overloads without tripping. The
I2t curve shows that time to trip is inversely proportional to the
square of the current. This means that short overloads can be
large without tripping but longer overloads must be small to avoid
tripping. FIGURE 5 shows a typical set of I2t curves. Operation
PARAMETER
CONDITIONS
VALUE
UNIT
TABLE 3. RP-212XX SPECIFICATIONS (CONT.)
Instant Trip Level With
External Programming
Resistor Shorted
See Figures
3 and 4
2845 min.
3155 max.
% of
Rated
Current
Load Detection Level
Without External
Programming Resistor
See Figures
3 and 4
89 min.
101 max.
% of
Rated
Current
Load Detection Level With
Ext. Programming
Resistor Shorted
See Figures
3 and 4
5 min.
15 max.
% of
Rated
Current
Thermal Resistance
Junction-to-Case
RP-21203
Hottest die
to base
3 max.
°C/W
Thermal Resistance
Junction-to-Case
RP-21209
Hottest die
to base
1 max.
°C/W
Thermal Resistance
Junction-to-Case
RP-21225
Hottest die
to base
0.5 max.
°C/W
Thermal Resistance
Base-to-Sink RP-21203
—
1.8 max.
°C/W
Operating Case
Temperature Range
—
-55 to +100
°C
Thermal Resistance
Base-to-Sink RP-21209
—
0.9 max.
°C/W
Thermal Resistance
Base-to-Sink RP-21225
—
0.5 max.
°C/W
Thermal Resistance
Base-to-Ambient
RP-21203
Free Air
25 max.
°C/W
Thermal Resistance
Base-to-Ambient
RP-21209
Free Air
20 max.
°C/W
Thermal Resistance
Base-to-Ambient
RP-21225
Free Air
15 max.
°C/W
Size
See Figure 8
—
Weight RP-21203
Weight RP-21209
Weight RP-21225
—
1.24 (35)
1.59 (45)
2.12 (60)
oz (g)
Storage Temperature
—
-55 to +125
°C
Mounting Torque
—
5
in-lbs
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