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參數(shù)資料
| 型號： | MC33060ADG |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Fixed Frequency, PWM, Voltage Mode Single Ended Controllers |
| 中文描述： | 0.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | LEAD FREE, SOIC-14 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 197K |
| 代理商： | MC33060ADG |
MC34060A, MC33060A
http://onsemi.com
6
APPLICATIONS INFORMATION
The control signals are external inputs that can be fed into
the dead
time control, the error amplifier inputs, or the
feed
back input. The dead
time control comparator has an
effective 120 mV input offset which limits the minimum
output dead time to approximately the first 4% of the
sawtooth
cycle time. This would result in a maximum duty
cycle of 96%. Additional dead time may be imposed on the
output by setting the dead time
control input to a fixed
voltage, ranging between 0 V to 3.3 V.
The pulse width modulator comparator provides a means
for the error amplifiers to adjust the output pulse width from
the maximum percent on
time, established by the dead time
control input, down to zero, as the voltage at the feedback
pin varies from 0.5 V to 3.5 V. Both error amplifiers have a
common mode input range from
0.3 V to (V
CC
2.0 V), and
may be used to sense power supply output voltage and
current. The error
amplifier outputs are active high and are
ORed together at the noninverting input of the pulse
width
modulator comparator. With this configuration, the
amplifier that demands minimum output on time, dominates
control of the loop.
The MC34060A has an internal 5.0 V reference capable
of sourcing up to 10 mA of load currents for external bias
circuits. The reference has an internal accuracy of
±
5% with
a typical thermal drift of less than 50 mV over an operating
temperature range of 0
°
to +70
°
C.
Figure 3. Oscillator Frequency
versus Timing Resistance
Figure 4. Open Loop Voltage Gain and Phase
versus Frequency
Figure 5. Percent Deadtime versus
Oscillator Frequency
Figure 6. Percent Duty Cycle versus
Dead
Time Control Voltage
f, FREQUENCY (Hz)
,
V
A
A
VOL
1.0
10
100
1.0 k
10 k
100 k
1.0 M
θ
VCC = 15 V
VO = 3.0
V
RL = 2.0 k
DEADTIME CONTROL VOLTAGE (V)
P
0
1.0
2.0
3.0
3.5
V
CC
= 15 V
C
T
= 0.001
R
T
= 47 k
V
CC
= 15 V
R
T
, TIMING RESISTANCE ( )
,
o
f
1.0 k
2.0 k
5.0 k 10 k
20 k
50 k 100 k 200 k 500 k 1.0 M
1.0 F
0.001 F
C
T
= 0.01 F
f
osc
, OSCILLATOR FREQUENCY (Hz)
%
500
10 k
100 k
500 k
C
T
= 0.001 F
0.01 F
1.0 k
100
90
80
70
60
50
40
30
20
10
0
100
80
60
40
20
0
500 k
100 k
10 k
1.0 k
500
20
18
16
14
12
10
8.0
6.0
4.0
2.0
0
110
120
20
40
60
80
100
120
140
160
180
0
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC33060ADG | 制造商:ON Semiconductor 功能描述:Controller IC |
| MC33060ADR2 | 功能描述:電壓模式 PWM 控制器 High Performance RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MC33060ADR2G | 功能描述:電壓模式 PWM 控制器 High Performance Voltage Mode PWM RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MC33060ADR2G-CUT TAPE | 制造商:ON 功能描述:MC Series 15 mA 200 kHz SMT Voltage Mode Single-Ended PWM Controller - SOIC-14 |
| MC33060AP | 功能描述:電壓模式 PWM 控制器 High Performance RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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