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參數(shù)資料
| 型號： | MC34167TV |
| 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： | 8 A SWITCHING REGULATOR, 81 kHz SWITCHING FREQ-MAX, PZFM5 |
| 封裝： | TO-220, 5 PIN |
| 文件頁數(shù)： | 10/16頁 |
| 文件大小： | 408K |
| 代理商： | MC34167TV |
MC34167 MC33167
10
MOTOROLA ANALOG IC DEVICE DATA
Figure 22. Voltage–Inverting Converter
4
2
1
5
3
+
CF
RF
R2
3.3 k
R1
EA
Reference
Thermal
Oscillator
S
R
Q
PWM
UVLO
ILIMIT
Vin
12 V
Cin
330
+
2.4 k
4.7 k
0.47
Q1
+
CO
4700
VO
–12 V/1.7 A
D1
1N5825
L
190
μ
H
C1
0.047
+
+
Test
Conditions
Results
Line Regulation
Vin = 10 V to 24 V, IO = 1.7 A
Vin = 12 V, IO = 0.1 A to 1.7 A
Vin = 12 V, IO = 1.7 A
Vin = 12 V, RL = 0.1
Vin = 12 V, IO = 1.7 A
Vin = 24 V, IO = 1.7 A
15 mV =
±
0.61%
4.0 mV =
±
0.020%
78 mVpp
5.7 A
Load Regulation
Output Ripple
Short Circuit Current
Efficiency
79.5%
86.2%
L = Coilcraft M1496–A or General Magnetics Technology GMT–0223, 42 turns of #16 AWG on
Magnetics Inc. 58350–A2 core. Heatsink = AAVID Engineering Inc. 5903B, or 5930B.
Two potential problems arise when designing the standard voltage–inverting converter with the MC34167. First, the Switch Output emitter is limited to –1.5 V with
respect to the ground pin and second, the Error Amplifier’s noninverting input is internally committed to the reference and is not pinned out. Both of these problems
are resolved by connecting the IC ground pin to the converter’s negative output as shown in Figure 22. This keeps the emitter of Q1 positive with respect to the
ground pin and has the effect of reversing the Error Amplifier inputs. Note that the voltage drop across R1 is equal to 5.05 V when the output is in regulation.
+
+
+
+
(Top View)
Vin
VO
CO
Ci
L
R
R
D
+
–
+
–
+
+
C
Figure 23. Voltage–Inverting Converter Printed Circuit Board and Component Layout
3.0
″
(Bottom View)
″
1
M
V
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC34167TVG | 功能描述:直流/直流開關調(diào)節(jié)器 40V 5A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34167TVG | 制造商:ON Semiconductor 功能描述:IC STEP-UP/STEP-DOWN/INVERT REG TO-220-5 |
| MC3416AP-5G | 制造商:ON Semiconductor 功能描述: |
| MC3417L | 制造商:Motorola Inc 功能描述:RF MODULATOR/DEMODULATOR, 16 Pin, Ceramic, DIP |
| MC3418 | 制造商:SHENZHENFREESCALE 制造商全稱:ShenZhen FreesCale Electronics. Co., Ltd 功能描述:N-Channel 20-V (D-S) MOSFET Fast switching speed |
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