File name AN8032.pdfVoltage Regulators
AN8032
Active filter control IC
s Overview
In supplying electric power from commercial power supply to various electrical equipment, there is a possibility that the harmonic distortion generated in the power line may give obstruction to the power facilities or other electrical equipment. The use of active filter is one of the methods to solve the harmonic distortion problems. The AN8032 is a monolithic IC which incorporates the control and protection functions into one package so that the active filter can be constructed easily. It is most suitable for the measures against the harmonic distortion problems such as lighting equipment.
6.0±0.3 2.4±0.25 3.3±0.25
Unit: mm
8
0.5±0.1
7
23.3±0.3
6 5 4
1.5±0.25 1.5±0.25 1.4±0.3
3.0±0.3
2 1
0.3 +0.1 0.05
s Features
· Self-excited peak current mode is adapted. SIP009-P-0000C · Built-in protection circuit for preventing the overvoltage generated under a small load · Easy constant setting with enlarged dynamic range of multiplier and error amplifier. · Overvoltage protection terminal separately set to pass the short test of the safety standards · Using totem pole output circuit which allows the power MOSFET to be directly driven. · Built-in low voltage protection circuit which ensures the on-resistance during the power MOSFET operation. · Timer circuit is built in for realizing automatic start.
s Applications
· Lighting equipment and switching power supply equipment
s Block Diagram
VBTH One shot 2.5 V Under voltage Over voltage clamper clamper U.V.L.O. comp. VREF 10 V/8 V 9 6 VCC VB
Timer
Drive
8
VOUT
Current comp. MPI 2 Multiplier
OVP comp. 2.6 V 5 1 Error amp. 2.5 V 2.5 V 4
OVP CS EI
7
GND
EO
3
30°
3
2.54
9
1
AN8032
s Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 Symbol CS MPI EO EI OVP VB GND VOUT VCC Description Comparator input pin Multiplier input pin Error amplifier output pin / multiplier input pin Error amplifier inverted-input pin Overvoltage detection pin Transformer-reset detection pin Grounding pin Output pin Power supply-voltage pin
Voltage Regulators
s Absolute Maximum Ratings
Parameter Supply voltage CS allowable application voltage MPI allowable application voltage EI allowable application voltage Output allowable current Peak output current VB allowable flow-in current VB allowable flow-out current Power dissipation Operating ambient temperature Storage temperature
* *
Symbol VCC VCS VMPI VEI IO IOP IBI IBO PD Topr Tstg
Rating 35 - 0.5 to +7 - 0.5 to +7 - 0.5 to +7 ±150 ±1 +5 -5 874 -30 to +85 -55 to +150
Unit V V V V mA A mA mA mW °C °C
Note) *: Expect for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.
s Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 0 to 34 Unit V
s Electrical Characteristics at Ta = 25°C
Parameter Error detection feedback threshold voltage 1 Error detection low-level output voltage Symbol VEITH1 VEOL IEO = 0 mA, VEI = 5 V IEI = 0 mA, VEI = 0 V VEI = 0 V VE |