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參數(shù)資料
| 型號： | HIP5600 |
| 廠商： | Harris Corporation |
| 英文描述： | Thermally Protected High Voltage Linear Regulator |
| 中文描述： | 熱保護(hù)的高電壓線性穩(wěn)壓器 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大小： | 175K |
| 代理商： | HIP5600 |
4
Application Information
Introduction
In many electronic systems the components operate at 3V to
15V but the system obtains power from a high voltage
source (AC or DC). When the current requirements are
small, less than 10mA, a linear regulator may be the best
supply provided that it is easy to design in, reliable, low cost
and compact. The HIP5600 is similar to other 3 terminal reg-
ulators but operates from much higher voltages. It protects
its load from surges
+
250V above its 400V operating input
voltage and has short circuit current limiting and thermal
shutdown self protection features.
Output Voltage
The HIP5600 provides a temperature independent 1.18V
reference, V
REF
, between the output and the adjustment
terminal (V
REF
= V
OUT
- V
ADJ
). This constant reference
voltage is impressed across RF1 (see Figure 2) and results
in a constant current (I
1
) that flows through RF2 to ground.
The voltage across RF2 is the product of its resistance and
the sum of I
1
and I
ADJ.
The output voltage is given in Equa-
tions 1(A, B).
(EQ. 1A)
(EQ. 1B)
Equations 2(A,B,C) are provided to determine the worst
case output voltage in relation to; manufacturing tolerances
(
V
REF
and
I
REF
),% tolerance in external resistors
(
RF1/RF1,
RF2/RF2), load regulation (
V
REF LOAD REG
,
I
ADJ LOAD REG
), line regulation (V
REF LINE REG
) and the
effects of temperature (V
REF
TC, I
REF
TC), which includes
self heating (
θ
SA
).
FIGURE 2.
Example:
2mA to 12mA
, θ
SA
= 10
o
C/W, RF1 = 1.1k
5% low, RF2 =
12k
5% high,
I
OUT
equals 10mA and
Temp equals
+60
o
C (ambient temperature +25
o
C to +85
o
C). The worst
case
V
OUT
for the given conditions is -1.13V. The shift in
V
OUT
is attributed to the following: -1.55V manufacturing tol-
erances, +1.33V external resistors, -0.62V load regulation
and -0.29V temperature effects.
Given:
V
IN
= 200V
DC
, V
OUT
= 15V, I
OUT
=
Regulator With Zener
FIGURE 3.
The output voltage can be set by using a zener diode (Figure
3) instead of the resistor divider shown in Figure 2. The
zener diode improves the ripple rejection ratio and reduces
the value of the worst case output voltage, as illustrated in
the example to follow. The bias current of the zener diode is
set by the value of RF1 and I
ADJ
.
The regulator / zener diode becomes an attractive solution if
ripple rejection or the worst case tolerance of the output volt-
age is critical (i.e. one zener diode cost less than one 10
μ
F
capacitor (C3) and one 1/4W resistor RF2). Minimum power
dissipation is possible by reducing I
1
current, with little effect
on the output voltage regulation. The output voltage is given
in Equation 3.
Equations 4(A,B,C) are provided to determine the worst
case output voltage in relation to; manufacturing tolerances
VOUT
VREF
(
)
--------------+
IADJRF2
(
)
+
=
VOUT
1.18
(
)
------------+
×
65
μ
A RF2
)
+
=
(EQ. 2A)
Where;
+V
REF
----------
-------------
-------------
–
VT
VREF
VREFLOADREG
IOUT
(
)
VREFTC
Temp
(
)
+
+
≡
ITADJ
IADJ
IADJLOADREG
IOUT
(
)
IADJ
+
TC
Temp
(
)
+
≡
(EQ. 2B)
(EQ. 2C)
Error Budget
Note:
---------------
= % tolerance of resistor x
VOUT
VTREF
------------+
ITADJRF2
IADJRF2
-------------
+
+
=
+VREFTC
θ
SA
(
)
IOUT
VIN
(
)
V
+
REFLINEREG
+IADJTC
θ
SA
(
)
IOUT
VIN
(
)
V
OUT(NOMINAL)
RF1
RF2
3.3V
3.6k
5.6k
4.9V
2.7k
7.5k
12.0V
1.8k
15k
14.8V
1.1k
12k
AC/DC
A
V
O
V
I
HIP5600
V
OUT
I
1
RF1
V
REF
I
ADJ
AC/DC
RF2
AC/DC
A
V
O
V
I
HIP5600
V
OUT
I
1
RF1
V
REF
I
ADJ
V
Z
AC/DC
V
OUT
= 1.18 + V
Z
V
OUT
V
Z
3.7V
2.5V
5.1V
3.9V
10.3V
9.1V
12.2V
11V
16.2V
15V
RF1 = 10k
HIP5600
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HIP5600_02 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Thermally Protected High Voltage Linear Regulator |
| HIP5600EVAL1 | 制造商:Harris Corporation 功能描述: |
| HIP5600EVAL2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HIP5600EVAL3 | 制造商:Harris Corporation 功能描述: |
| HIP5600EVAL4 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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