|
|
PDF 34262P Data sheet ( Hoja de datos )
| Número de pieza | 34262P | |
| Descripción | MC34262 | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de 34262P (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
Power Factor Controllers
The MC34262/MC33262 are active power factor controllers specifically
designed for use as a preconverter in electronic ballast and in off–line power
converter applications. These integrated circuits feature an internal startup
timer for stand–alone applications, a one quadrant multiplier for near unity
power factor, zero current detector to ensure critical conduction operation,
transconductance error amplifier, quickstart circuit for enhanced startup,
trimmed internal bandgap reference, current sensing comparator, and a
totem pole output ideally suited for driving a power MOSFET.
Also included are protective features consisting of an overvoltage
comparator to eliminate runaway output voltage due to load removal, input
undervoltage lockout with hysteresis, cycle–by–cycle current limiting,
multiplier output clamp that limits maximum peak switch current, an RS latch
for single pulse metering, and a drive output high state clamp for MOSFET
gate protection. These devices are available in dual–in–line and surface
mount plastic packages.
• Overvoltage Comparator Eliminates Runaway Output Voltage
• Internal Startup Timer
• One Quadrant Multiplier
• Zero Current Detector
• Trimmed 2% Internal Bandgap Reference
• Totem Pole Output with High State Clamp
• Undervoltage Lockout with 6.0 V of Hysteresis
• Low Startup and Operating Current
• Supersedes Functionality of SG3561 and TDA4817
Simplified Block Diagram
Zero Current Detector
2.5V
Reference
Undervoltage
Lockout
Zero Current
5 Detect Input
VCC
8
Order this document by MC34262/D
MC34262
MC33262
POWER FACTOR
CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
Voltage Feedback
Input
1
Compensation 2
8 VCC
7 Drive Output
Multiplier Input 3
Current Sense 4
Input
6 Gnd
5 Zero Current
Detect Input
(Top View)
Multiplier
Input 3
Gnd 6
Multiplier,
Latch,
PWM,
Timer,
&
Logic
Multiplier
Overvoltage
Comparator
+
1.08 Vref
Error Amp
+
Vref
Quickstart
Compensation 2
MOTOROLA ANALOG IC DEVICE DATA
Drive Output
7
Current Sense
4 Input
Voltage
Feedback
1 Input
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC34262D
MC34262P
TA = 0° to +85°C
SO–8
Plastic DIP
MC33262D
SO–8
TA = – 40° to +105°C
MC33262P
Plastic DIP
© Motorola, Inc. 1996
Rev 1
1
www.DataSheet.in
1 page  
MC34262 MC33262
Figure 9. Zero Current Detector Input
Threshold Voltage versus Temperature
1.7
Upper Threshold
VCC = 12 V
(Vin, Increasing)
1.6
1.5
1.4
1.3
– 55
Lower Threshold
(Vin, Decreasing)
– 25 0 25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
125
0
– 2.0
– 4.0
– 6.0
4.0
2.0
0
0
Figure 10. Output Saturation Voltage
versus Load Current
VCC
Source Saturation
(Load to Ground)
VCC = 12 V
80 µs Pulsed Load
120 Hz Rate
Sink Saturation
(Load to VCC)
Gnd
80 160 240
IO, OUTPUT LOAD CURRENT (mA)
320
Figure 11. Drive Output Waveform
90% VCC = 12 V
CL = 1.0 nF
TA = 25°C
Figure 12. Drive Output Cross Conduction
VCC = 12 V
CL = 15 pF
TA = 25°C
10%
100 ns/DIV
100 ns/DIV
Figure 13. Supply Current
versus Supply Voltage
16
12
8.0
VFB = 0 V
Current Sense = 0 V
4.0 Multiplier = 0 V
CL = 1.0 nF
f = 50 kHz
TA = 25°C
0
0 10 20 30 40
VCC, SUPPLY VOLTAGE (V)
Figure 14. Undervoltage Lockout Thresholds
versus Temperature
14
13
Startup Threshold
12 (VCC Increasing)
11
10
9.0 Minimum Operating Threshold
(VCC Decreasing)
8.0
7.–055 – 25
0 25 50 75
TA, AMBIENT TEMPERATURE (°C)
100
125
MOTOROLA ANALOG IC DEVICE DATA
www.DataSheet.in
5
5 Page 
MC34262 MC33262
Figure 20. 175 W Universal Input Power Factor Controller
90 to 268 RFI
Vac Filter
1 C5
D2 D4
D1 D3
100k
R6 1N4934
8 D6
Zero Current
Detector
+
1.2V
36V
+ 100
C4
+ 1.6V/
1.4V
6.7V
5
22k
R4 T
2.5V
Reference
UVLO
+ 13V/
8.0V
Delay
Timer R
RS
Latch
16V
10
Drive
Output
10
7
MUR460
D5
VO
+ 400V/0.44A
MTP
14N50E
330
C3
Q1
1.3M
R5 Current Sense
Comparator
0.01 12k 3
C2 R3
1.5V
Multiplier
20k
Overvoltage
Comparator
10pF
+
1.08 Vref
10µA
Error
Amp
+
Vref
4
1
Quickstart
1.6M
R2
0.1
R7
10k
R1
62
0.68
C1
Power Factor Controller Test Data
AC Line Input
Vrms
90
Pin
193.3
PF
0.991
Ifund
2.15
Current Harmonic Distortion (% Ifund)
THD
2
3
5
7
2.8 0.18 2.6 0.55 1.0
VO(pp)
3.3
120 190.1 0.998 1.59 1.6 0.10 1.4 0.23 0.72
3.3
138 188.2 0.999 1.36 1.2 0.12 1.3 0.65 0.80
3.3
180 184.9 0.998 1.03 2.0 0.10 0.49 1.2 0.82
3.4
240 182.0 0.993 0.76 4.4 0.09 1.6
2.3 0.51
3.4
268 180.9 0.989 0.69 5.9 0.10 2.3
2.9 0.46
3.4
This data was taken with the test set–up shown in Figure 24.
T = Coilcraft N2880–A
Primary: 78 turns of # 16 AWG
Secondary: 6 turns of # 18 AWG
Core: Coilcraft PT4215, EE 42–15
Gap: 0.104″ total for a primary inductance (LP) of 870 µH
Heatsink = AAVID Engineering Inc. 590302B03600
DC Output
VO IO PO
402.1 0.44 176.9
402.1 0.44 176.9
402.1 0.44 176.9
402.1 0.44 176.9
402.1 0.44 176.9
402.1 0.44 176.9
η(%)
91.5
93.1
94.0
95.7
97.2
97.8
MOTOROLA ANALOG IC DEVICE DATA
www.DataSheet.in
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet 34262P.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| 34262P | MC34262 | Motorola Semiconductors |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |