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參數(shù)資料
| 型號(hào)： | MC33364D2 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | CRITICAL CONDUCTION GREENLINEE SMPS CONTROLLER |
| 中文描述： | SWITCHING CONTROLLER, 126 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, SO-8 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大小： | 269K |
| 代理商： | MC33364D2 |
MC33364
5
MOTOROLA ANALOG IC DEVICE DATA
FUNCTIONAL DESCRIPTION
INTRODUCTION
With the goal of reducing the size and cost of off–line
power supplies, there is an ever increasing demand for an
economical method of obtaining a regulated galvanically
isolated dc output voltage using a control which operates
directly from the ac line. This data sheet describes a
monolithic control IC that was specifically designed for power
supply control with a minimal number of external
components. It offers the designer a simple cost effective
solution to obtain the benefits of off–line power regulation.
Figure 7. Functional Block Diagram
S
R
R
En
5.0 V
Reference
U3
MOC8102
C3
20
MTD1N60
Q1
+
C5
300
T1
470 R4
R3
1.2 K
R5 47 k
R2
22 k
R7
2.2
R10
14 k
R8
430
C8
330 pF
6.0 V
2 Amp
C7
10
C4
.001
C9 .01
C10
0.1
1
2
4
5
U2
TL431
2
1
3
1N4934
R1 56
D5
D6
MURS160T3
D7
1N4148
R12 100
D8
MBRS340T3
R6
47 K
R9
39 k
R11
10 k
Zero
Current
Detect
Vref
Current
Sense
Frequency
Clamp
Gate Drive
Zero Current
VCC
Line
+
15/7.6
UVLO
0.3/
0.25 V
Voltage FB
P Gnd
5.0 V
4.0 K
10 pF
3.0
μ
A
Leading
Edge
Blanking
44 K
UVLO
VCC
P VCC
A Gnd
MC33364
En
5.0 k
14 K
1.5 V
EMI
Filter
92 to
270 Vac
C5
10
D1
1N4006
D3
1N4006
1N4006
D2
D4
1N4006
10 V
2.0 V
2.0 V
D9
1N4148
R13
100
R
Q
Timer
Q
RQ
+
C2
0.01
VO
2.5
R10
R11
1
Operating Description
The MC33364 contains many of the building blocks and
protection features that are employed in modern high
performance current mode power supply controllers.
Referring to the block diagram in Figure 7, note that this
device does not contain an oscillator. A description of each of
the functional blocks is given below.
Zero Current Detector
The MC33364 operates as a critical conduction current
mode controller, whereby output switch conduction is
initiated by the Zero Current Detector and terminated when
the peak inductor current reaches the input threshold level.
The Zero Current Detector initiates the next on–time by
setting the RS Latch at the instant the inductor current
reaches zero. This critical conduction mode of operation has
two significant benefits. First, since the MOSFET cannot
turn–on until the inductor current reaches zero, the output
rectifier’s reverse recovery time becomes less critical
allowing the use of an inexpensive rectifier. Second, since
there are no deadtime gaps between cycles, the ac line
current is continuous thus limiting the peak switch to twice
the average input current
The Zero Current Detector indirectly senses the inductor
current by monitoring when the auxiliary winding voltage falls
below 0.25 V. To prevent false tripping, 50 mV of hysteresis is
provided. The Zero Current Detector input is internally
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC33364D2G | 功能描述:電流型 PWM 控制器 Variable Frequency SMPS RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MC33364D2R2 | 功能描述:電流型 PWM 控制器 Variable Frequency RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MC33364D2R2G | 功能描述:電流型 PWM 控制器 Variable Frequency SMPS RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MC33364DG | 功能描述:電流型 PWM 控制器 Variable Frequency SMPS RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MC33364DR2 | 功能描述:電流型 PWM 控制器 Variable Frequency RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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