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MC34065-LのメーカーはON Semiconductorです、この部品の機能は「(MC3x065-x) High Performance Dual Channel Current Mode Controllers」です。 |
部品番号 | MC34065-L |
| |
部品説明 | (MC3x065-x) High Performance Dual Channel Current Mode Controllers | ||
メーカ | ON Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとMC34065-Lダウンロード(pdfファイル)リンクがあります。 Total 18 pages
www.DataSheet4U.com
MC34065−H, L
MC33065−H, L
High Performance
Dual Channel Current
Mode Controllers
The MC34065−H,L series are high performance, fixed frequency,
dual current mode controllers. They are specifically designed for
off−line and dc−to−dc converter applications offering the designer a
cost effective solution with minimal external components. These
integrated circuits feature a unique oscillator for precise duty cycle
limit and frequency control, a temperature compensated reference,
two high gain error amplifiers, two current sensing comparators, Drive
Output 2 Enable pin, and two high current totem pole outputs ideally
suited for driving power MOSFETs.
Also included are protective features consisting of input and
reference undervoltage lockouts each with hysteresis, cycle−by−cycle
current limiting, and a latch for single pulse metering of each output.
These devices are available in dual−in−line and surface mount
packages.
The MC34065−H has UVLO thresholds of 14 V (on) and 10 V (off),
ideally suited for off−line converters. The MC34065−L is tailored for
lower voltage applications having UVLO thresholds of 8.4 V (on) and
7.8 V (off).
• Unique Oscillator for Precise Duty Cycle Limit and Frequency Control
• Current Mode Operation to 500 kHz
• Automatic Feed Forward Compensation
• Separate Latching PWMs for Cycle−By−Cycle Current Limiting
• Internally Trimmed Reference with Undervoltage Lockout
• Drive Output 2 Enable Pin
• Two High Current Totem Pole Outputs
• Input Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current
VCC 16
Vref
1
5
1
Sync Input
3
RT
CT
2
Voltage
Feedback 1
4
Compensation 1
5
5.0V
Reference
R
R
Vref
Undervoltage
Lockout
Oscillator
+
−
Error
Amp 1
VCC
Undervoltage
Lockout
Latching
PWM 1
Drive Output 1
7
Current Sense
61
Drive Output
2
Enable
14
Voltage
Feedback 2 13
Compensation 2
12
+
−
Error
Amp 2
Latching
PWM 2
Gnd 8
Drive Gnd 9
Representative Block Diagram
Drive Output 2
10
Current Sense
11 2
http://onsemi.com
HIGH PERFORMANCE
DUAL CHANNEL CURRENT
MODE CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 648
16
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO−16L)
16
1
PIN CONNECTIONS
Sync Input 1
CT 2
RT 3
Voltage Feedback 1 4
Compensation 1 5
Current Sense 1 6
Drive Output 1 7
16 VCC
15 Vref
14 Drive Output 2 Enable
13 Voltage Feedback
2
12 Compensation
2
11 Current Sense
2
10 Drive Output 2
Gnd 8
(Top View)
9 Drive
Gnd
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC34065DW−H
SO−16L
MC34065DW−L
MC34065P−H
TA = 0° to +70°C
Plastic DIP
MC34065P−L
MC33065DW−H
MC33065DW−L
MC33065P−H
MC33065P−L
TA = −40° to +85°C
SO−16L
Plastic DIP
© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 2
1
Publication Order Number:
MC34065−H/D
1 Page ERROR AMPLIFIERS
Output Current
Source (VO = 3.0 V, VFB = 2.3 V)
Sink (VO = 1.2 V, VFB = 2.7 V)
Output Voltage Swing
High State (RL = 15 k to ground, VFB = 2.3 V)
Low State (RL = 15 k to Vref, VFB = 2.7 V)
MC34065−H, L
mA
Isource
Isink
0.45
2.0
1.0
12
−
−
VOH
VOL
5.0 6.2
−
− 0.8 1.1
V
http://onsemi.com
3
3Pages 2.55 V
2.50 V
MC34065−H, L
VCC = 15 V
AV = −1.0
TA = 25°C
3.0 V
2.50 V
VCC = 15 V
AV = −1.0
TA = 25°C
2.45 V
1.0 μs/DIV
Figure 3. Error Amp Small−Signal
Transient Response
2.0 V
1.0 μs/DIV
Figure 4. Error Amp Large−Signal
Transient Response
100
80 Gain
60
VCC = 15 V
VO = 1.5 V to 2.5 V
RL = 100 k
TA = 25°C
0
30
60
40 90
20 Phase 120
0 150
−20 180
10 100 1.0 k 10 k 100 k 1.0 M 10 M
f, FREQUENCY (Hz)
Figure 5. Error Amp Open Loop Gain and
Phase versus Frequency
1.2
VCC = 15 V
1.0
0.8 TA = 125°C
0.6 TA = 25°C
0.4 TA = −55°C
0.2
0
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
VO, ERROR AMP OUTPUT VOLTAGE (V)
Figure 6. Current Sense Input Threshold
versus Error Amp Output Voltage
0
−4.0
−8.0
−12
−16
−20
−24
0
VCC = 15 V
TA = 125°C
TA = 25°C
TA = −55°C
20 40 60 80 100
Iref, REFERENCE SOURCE CURRENT (mA)
Figure 7. Reference Voltage Change
versus Source Current
120
120
VCC = 15 V
RL ≤ 0.1 Ω
100
80
60
−55
−25 0 25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
Figure 8. Reference Short Circuit Current
versus Temperature
125
http://onsemi.com
6
6 Page | |||
ページ | 合計 : 18 ページ | ||
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PDF ダウンロード | [ MC34065-L データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
MC34065-H | (MC3x065-x) High Performance Dual Channel Current Mode Controllers | ON Semiconductor |
MC34065-H | High Performance Dual Channel Current Mode Controllers | Motorola Semiconductors |
MC34065-L | (MC3x065-x) High Performance Dual Channel Current Mode Controllers | ON Semiconductor |
MC34065-L | High Performance Dual Channel Current Mode Controllers | Motorola Semiconductors |