參數(shù)資料
型號(hào)： MC34166TV
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 6 A SWITCHING REGULATOR, 81 kHz SWITCHING FREQ-MAX, PZFM5
封裝： TO-220, 5 PIN
文件頁(yè)數(shù)： 13/20頁(yè)
文件大?。?/td> 239K
代理商： MC34166TV
MC34166, MC33166
http://onsemi.com
13
4
2
1
5
3
+
V
O1
5.05 V/2.0 A
EA
Reference
Thermal
Oscillator
S
R
Q
PWM
UVLO
ILIMIT
V
in
24 V
1000
+
6.8 k
68 k
0.1
1N5822
+
1000
1000
+
1000
+
MUR110
MUR110
V
O3
-12 V/100 mA
V
O2
12 V/300 mA
T1
+
+
Tests
Conditions
Results
Line Regulation
5.0 V
12 V
–12 V
V
in
= 15 V to 30 V, I
O1
= 2.0 A, I
O2
= 300 mA, I
O3
= 100 mA
4.0 mV =
±
0.04%
450 mV =
±
1.9%
350 mV =
±
1.5%
Load Regulation
5.0 V
12 V
–12 V
V
in
= 24 V, I
O1
= 500 mA to 2.0 A, I
O2
= 300 mA, I
O3
= 100 mA
V
in
= 24 V, I
O1
= 2.0 A, I
O2
= 100 mA to 300 mA, I
O3
= 100 mA
V
in
= 24 V, I
O1
= 2.0 A, I
O2
= 300 mA, I
O3
= 30 mA to 100 mA
2.0 mV =
±
0.02%
420 mV =
±
1.7%
310 mV =
±
1.3%
Output Ripple
5.0 V
12 V
–12 V
V
in
= 24 V, I
O1
= 2.0 A, I
O2
= 300 mA, I
O3
= 100 mA
50 mV
pp
25 mV
pp
10 mV
pp
Short Circuit Current
5.0 V
12 V
–12 V
V
in
= 24 V, R
L
= 0.1
4.3 A
1.83 A
1.47 A
Efficiency
TOTAL
V
in
= 24 V, I
O1
= 2.0 A, I
O2
= 300 mA, I
O3
= 100 mA
83.3%
T1 = Primary: Coilcraft M1496-A or General Magnetics Technology GMT–0223, 42 turns of #16 AWG on Magnetics Inc. 58350-A2 core.
T1 =
Secondary: V
O2
– 65 turns of #26 AWG
T1 = Secondary:
V
O3
– 96 turns of #28 AWG
Heatsink = AAVID Engineering Inc. 5903B, or 5930B.
Multiple auxiliary outputs can easily be derived by winding secondaries on the main output inductor to form a transformer. The secondaries must
be connected so that the energy is delivered to the auxiliary outputs when the Switch Output turns off. During the OFF time, the voltage across
the primary winding is regulated by the feedback loop, yielding a constant Volts/Turn ratio. The number of turns for any given secondary voltage
can be calculated by the following equation:
# TURNS(SEC)
VO(SEC)
VO(PRI)
#TURNS(PRI)
VF(SEC)
VF(PRI)
Note that the 12 V winding is stacked on top of the 5.0 V output. This reduces the number of secondary turns and improves lead regulation. For
best auxiliary regulation, the auxiliary outputs should be less than 33% of the total output power.
Figure 25. Triple Output Converter
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