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參數資料
| 型號： | MC34167TV |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 8 A SWITCHING REGULATOR, 81 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封裝： | VERTICAL MOUNT, PLASTIC, TO-220, 5 PIN |
| 文件頁數： | 11/16頁 |
| 文件大小： | 408K |
| 代理商： | MC34167TV |
MC34167 MC33167
11
MOTOROLA ANALOG IC DEVICE DATA
Figure 24. Triple Output Converter
4
2
1
5
3
+
VO1
5.0 V/3.0 A
EA
Reference
Thermal
Oscillator
S
R
Q
PWM
UVLO
ILIMIT
Vin
24 V
1000
+
6.8 k
68 k
0.1
1N5825
+
1000
1000
+
1000
+
MUR110
MUR110
VO3
–12 V/200 mA
VO2
12 V/250 mA
T1
+
+
Tests
Conditions
Results
Line Regulation
5.0 V
12 V
–12 V
Vin = 15 V to 30 V, IO1 = 3.0 A, IO2 = 250 mA, IO3 = 200 mA
3.0 mV =
±
0.029%
572 mV =
±
2.4%
711 mV =
±
2.9%
Load Regulation
5.0 V
12 V
–12 V
Vin = 24 V, IO1 = 30 mA to 3.0 A, IO2 = 250 mA, IO3 = 200 mA
Vin = 24 V, IO1 = 3.0 A, IO2 = 100 mA to 250 mA, IO3 = 200 mA
Vin = 24 V, IO1 = 3.0 A, IO2 = 250 mA, IO3 = 75 mA to 200 mA
Vin = 24 V, IO1 = 3.0 A, IO2 = 250 mA, IO3 = 200 mA
1.0 mV =
±
0.009%
409 mV =
±
1.5%
528 mV =
±
2.0%
Output Ripple
5.0 V
12 V
–12 V
75 mVpp
20 mVpp
20 mVpp
6.5 A
2.7 A
2.2 A
Short Circuit Current
5.0 V
12 V
–12 V
Vin = 24 V, RL = 0.1
Efficiency
TOTAL
Vin = 24 V, IO1 = 3.0 A, IO2 = 250 mA, IO3 = 200 mA
84.2%
# TURNS(SEC)
VO(SEC)
VO(PRI)
#TURNS(PRI)
VF(SEC)
VF(PRI)
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:
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
– 69 turns of #26 AWG
T1 = Secondary:
V
O3
– 104 turns of #28 AWG
Heatsink = AAVID Engineering Inc. 5903B, or 5930B.
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.
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