MC33166D2T 查看數據表（PDF） - Motorola => Freescale
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MC33166D2T Datasheet PDF : 16 Pages
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Oscillator
PWM
Thermal
3
MC34166 MC33166
Figure 24. Triple Output Converter
Vin
24 V
ILIMIT
S
Q
R
UVLO
4
+
1000
2
1N5822
Reference
+
EA
+
1
T1
6.8 k
+
1000
MUR110
+
VO3
1000 –12 V/100 mA
MUR110
+1000
VO2
12 V/300 mA
VO1
5.05 V/2.0 A
5
0.1
68 k
Tests
Conditions
Results
Line Regulation
5.0 V
12 V
–12 V
Vin = 15 V to 30 V, IO1 = 2.0 A, IO2 = 300 mA, IO3 = 100 mA
4.0 mV = ± 0.04%
450 mV = ±1.9%
350 mV = ±1.5%
Load Regulation
Output Ripple
Short Circuit Current
5.0 V
12 V
–12 V
5.0 V
12 V
–12 V
5.0 V
12 V
–12 V
Vin = 24 V, IO1 = 500 mA to 2.0 A, IO2 = 300 mA, IO3 = 100 mA
Vin = 24 V, IO1 = 2.0 A, IO2 = 100 mA to 300 mA, IO3 = 100 mA
Vin = 24 V, IO1 = 2.0 A, IO2 = 300 mA, IO3 = 30 mA to 100 mA
Vin = 24 V, IO1 = 2.0 A, IO2 = 300 mA, IO3 = 100 mA
Vin = 24 V, RL = 0.1 Ω
2.0 mV = ± 0.02%
420 mV = ±1.7%
310 mV = ±1.3%
50 mVpp
25 mVpp
10 mVpp
4.3 A
1.83 A
1.47 A
Efficiency
TOTAL Vin = 24 V, IO1 = 2.0 A, IO2 = 300 mA, IO3 = 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: VO2 — 65 turns of #26 AWG
T1 = Secondary: VO3 — 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:
+ ǒ )) Ǔ # TURNS(SEC)
VO(SEC) VF(SEC)
VO(PRI) VF(PRI)
#TURNS(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.
MOTOROLA ANALOG IC DEVICE DATA
11
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