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AP1661A Schematic ( PDF Datasheet ) - BCD

Teilenummer AP1661A
Beschreibung HIGH PERFORMANCE POWER FACTOR CORRECTOR
Hersteller BCD
Logo BCD Logo 




Gesamt 11 Seiten
AP1661A Datasheet, Funktion
Preliminary Datasheet
HIGH PERFORMANCE POWER FACTOR CORRECTOR
General Description
Features
AP1661A
The AP1661A is an active power factor control IC
which is designed mainly for use as pre-converter in
electronic ballast, AC-DC adapters and off-line SMPS
applications.
The AP1661A includes an internal start-up timer for
stand-alone applications, a one-quadrant multiplier to
realize near unity power factor and a zero current
detector to ensure DCM boundary conduction opera-
tion. The totem pole output stage is capable of driving
power MOSFET with 600mA source current and
800mA sink current.
Designed with advanced BiCMOS process, the
AP1661A features low start-up current, low operation
current and low power dissipation. The AP1661A also
has rich protection features including over-voltage pro-
tection, input under-voltage lockout with hysteresis
and multiplier output clamp to limit maximum peak
current.
The AP1661A meets IEC61000-3-2 standard even at
one-quadrant load and its THD is lower than 10% at
high-end line voltage and full load.
· Comply with IEC61000-3-2 Standard
· Proprietary Design for Minimum THD
· Zero Current Detection Control for DCM Bound-
ary Conduction Mode
· Adjustable Output Voltage with Precise Over-
Voltage Protection
· Ultra-low Startup Current: 30µA Typical
· Low Quiescent Current: 2.5mA Typical
· Precision Internal Reference Voltage: 1%
· Internal Startup Timer
· Disable Function for Reduced Current
Consumption
· Totem Pole Output with 600mA Source Current
and 800mA Sink Current Capability
· Under-voltage Lockout with 2.5V of Hysteresis
Applications
· AC-DC Adapter
· Off-line SMPS
· Electronic Ballast
This IC is available in SOIC-8 and DIP-8 packages.
Jul. 2009 Rev. 1. 0
SOIC-8
DIP-8
Figure 1. Package Types of AP1661A
BCD Semiconductor Manufacturing Limited
1






AP1661A Datasheet, Funktion
Preliminary Datasheet
HIGH PERFORMANCE POWER FACTOR CORRECTOR
AP1661A
Electrical Characteristics (Continued)
VCC=14.5V, TA=-25oC to 125oC, unless otherwise specified.
Parameter
Current Sense Section
Input Bias Current
Current Sense Offset Volt-
age
Symbol
ICS
VCS-OFFSET
Current Sense Reference
Clamp
VCS-CLAMP
Delay to Output
td(H-L)
Zero Current Detection Section
Test Conditions
VCS =0V
VMULT=0V
VMULT=2.5V
VCOMP=Upper Clamp Voltage,
VMULT=2.5V
Min Typ Max
-0.05
30
5
-1.0
1.5 1.6 1.7
175
Input Threshold Voltage,
VZCD Rising Edge
Hysteresis Voltage
Upper Clamp Voltage
Lower Clamp Voltage
Source Current Capability
Sink Current Capability
Sink Bias Current
Disable Threshold
Disable Hysterisis
Restart Current After
Disable
VZCD-R (Note 2)
VZCD-RTH
VZCD-H
VZCD-L
IZCD-SR
IZCD-SN
IZCD-B
VZCD-DIS
VZCD-HYS
IZCD-RES
(Note 2)
IZCD=20µA
IZCD=3mA
IZCD=-3mA
1VVZCD4.5 V
VZCD<VDIS; VCC>VCC-OFF
2.1
0.3 0.5 0.7
4.5 5.1 5.9
4.7 5.2 6.1
0.3 0.65
1
-3 -10
3 10
2
150 200 250
100
-100 -200 -300
Drive Output Section
Dropout Voltage
VOH
VOL
Output Voltage Rise Time
tR
Output Voltage Fall Time
tF
Output Clamp Voltage
VO-CLAMP
UVLO Saturation
VOS
Output Over Voltage Section
OVP Triggering Current
Static OVP Threshold
Restart Timer
IOVP
VOVP_TH
IGD-SOURCE=200mA, VCC=12V
IGD-SOURCE=20mA, VCC=12V
IGD-SINK=200mA, VCC=12V
CL=1nF
CL=1nF
IGD-SOURCE=5mA, VCC=20V
VCC=0 to VCC-ON, ISINK=10mA
2.5
2
0.9
40
40
10 13
35 40
2.1 2.25
Restart Timer
tSTART
70 150
Note 2: Limits over the full temperature are guaranteed by design, but not tested in production.
3
2.6
1.9
100
100
15
1.1
45
2.4
400
Unit
µA
mV
V
ns
V
V
V
V
mA
mA
µA
mV
mV
µA
V
V
ns
ns
V
V
µA
V
µs
Jul. 2009 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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