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參數(shù)資料
| 型號： | HIP5600IS2 |
| 廠商： | Harris Corporation |
| 英文描述： | Thermally Protected High Voltage Linear Regulator |
| 中文描述： | 熱保護的高電壓線性穩(wěn)壓器 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 175K |
| 代理商： | HIP5600IS2 |
9
5.
Warning:
the output voltage will approach the input volt-
age if the adjust pin is disconnected, resulting in perma-
nent damage to the low voltage output capacitor.
AC Operation
1. Do not exceed the absolute maximum ratings.
2. The HIP5600 requires a minimum output current of
0.5mA. Minimum output current includes current through
RF1.
Warning:
If there is less than 0.5mA output current,
the output voltage will rise. If the possibility of no load
exists, RF1 should be sized to sink 0.5mA under these
conditions.
3. If using a laboratory AC source (such as VARIACs or
step-up transformers, etc.) be aware that they contain
large inductances that can generate damaging high volt-
age transients when they are switched on or off.
Recommendations
(1) Preset VARIAC output voltage before applying power
to part.
(2) Adequate protection means (such as MOV, avalanche
diode, surgector, etc.) may be needed to clamp tran-
sients to within the
±
650V input limit of the HIP5600.
4. Do not operate the part with the input voltage below the
minimum 50V
RMS
recommended.
Low voltage opera-
tion similar to DC operation
(reference step 4 under
DC operation).
5.
Warning:
the output voltage will approach the input volt-
age if the adjust pin is disconnected, resulting in perma-
nent damage to the low voltage output capacitor.
General Precautions
Instrumentation Effects
Background
: Input to output parasitic impedances exist in
most test equipment power supplies. The inter-winding
capacitance of the transformer may result in substantial cur-
rent flow (mA) from the equipment power lines to the DC
ground of the HIP5600. This “ground loop” current can result
in erroneous measurements of the circuits performance and
in some cases lead to overstress of the HIP5600.
Recommendations for Evaluation of the HIP5600
in the Lab
a) The use of battery powered DVMs and scopes will elimi-
nate ground loops.
b) When connecting test equipment, locate grounds as
close to circuit ground as possible.
c) Input current measurements should be made with a non-
contact current probe.
If AC powered test equipment is used, then the use of an
isolated plug is recommended. The isolated plug eliminates
any voltage difference between earth ground and AC
ground. However, even though the earth ground is discon-
nected, ground loop currents can still flow through trans-
former of the test equipment. Ground loops can be
minimized
by connecting the test equipment ground as
close to the circuit ground as possible.
CAUTION:
Dangerous voltages may appear on exposed
metal surfaces of AC powered test equipment.
Application Circuits
FIGURE 12. DC/DC CONVERTER
The HIP5600 can be configured in most common DC linear
regulator applications circuits with an input voltage between
50V
DC
to 400V
DC
(above the output voltage) see Figure 12.
A 10
μ
F capacitor (C2) provides stabilization of the output
stage. Heat sinking may be required depending upon the
power dissipation. Normally, choose RF1 << V
REF
/I
ADJ
.
FIGURE 13. AC/DC CONVERTER
The HIP5600 can operate from an AC voltage between
50V
RMS
to 280V
RMS
, see Figure 13. The combination of a
1k
(2W) input resistor and a V275LA10B MOV provides
input surge protection up to 6kV 1.2 x 50
μ
s oscillating and
pulse waveforms as defined in IEEE/ANSI C62.41.1980.
When operating from 120V
AC
, a V130LA10B MOV provides
protection
without
the 1k
resistor.
The output capacitor is larger for operation from AC than DC
because the HIP5600 only conducts current during the posi-
tive half cycle of the AC line. The efficiency is approximately
equal to V
OUT
/V
IN
(RMS), see Figure 11.
RF1MIN
V
------------------
-----------------
2k
=
=
=
+ 50VDC TO 400VDC BUS
A
V
O
V
I
+ V
OUT
RF1
RF2
C1
0.02
μ
F
C2
10
μ
F
C3
10
μ
F
HIP5600
±
SURGE
PROTECTION
NOTE 1. 200V
RMS
- 280V
RMS
Operation Only
A
V
O
V
I
+ V
OUT
RF1
RF2
C1
0.02
μ
F
C2
10
μ
F
HIP5600
C3
10
μ
F
1k
(NOTE 1)
HIP5600
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