参数资料
型号: PFS716EG
厂商: POWER INTEGRATIONS INC
元件分类: 稳压器
英文描述: POWER FACTOR CONTROLLER, 95 kHz SWITCHING FREQ-MAX, PZIP6
封装: HALOGEN FREE AND ROHS COMPLIANT, PLASTIC, SIP-7/6
文件页数: 28/30页
文件大小: 2647K
代理商: PFS716EG
Rev. A 11/09/10
7
PFS704-729EG
www.powerint.com
PI-5338-110810
V
OFF
VE
~5 V
(full power)
~4.8 V
PFS704-716
VIN < 140 VAC
PFS704-716
VIN > 170 VAC
PFS723-729
~5 V
~2.5 V
~0.8 V
V
OFF
at
V
E=
0
V
VIN
~170 VAC
~140 VAC
~5 V
~2.5 V
controlled with respect to the internal error-voltage level (output
power) to allow the converter to maintain output voltage
regulation and relatively flat conversion efficiency between 10%
to 100% of rated load which is essential to meet many efficiency
directives.
The degree of frequency slide is also controlled as a function of
peak input line voltage, at high input line the maximum off-time
voltage reference at zero error-voltage will be approximately 1/2
of the maximum value at low input line conditions.
The lower V
OFF slope reduces the average frequency swing for
high input line operation.
The PFS723-729 does not reduce the average frequency as a
function of load (V
OFF is a constant value of ~0.8 V).
Protection Modes
VOLTAGE MONITOR (V) Pin Shutdown
The VOLTAGE MONITOR pin features a shutdown protection
mode which can be used with the VOLTAGE MONITOR pin
resistor or external circuitry to cover system faults. During
start-up (1 V < V
FB < 5.8 V) in the event the current through the
VOLTAGE MONITOR pin exceeds the I
V(OFF) threshold for a
duration exceeding approximately (1
ms), the IC disables the
internal MOSFET for the entire duration that the V pin current is
above I
V(OFF). In normal operation, if the current through the V
pin exceeds the I
V(OFF) threshold for a duration exceeding tV(OFF),
the IC will reinitiate the start-up sequence.
Brown-In Protection (I
UV+)
The VOLTAGE MONITOR pin features an input line undervoltage
detection to limit the minimum start-up voltage detected
through the V pin. This detection threshold will inhibit the
device from starting at very low input AC voltage.
Brown-Out Protection (I
UV-)
The V pin features a brown-out protection mode wherein the
HiperPFS will turn-off when the V pin current is below the Line
UV-threshold for a period exceeding the t
REFRESH time period. In
the event a single half-line cycle is missing (normal operating
Figure 8.
(a) Frequency Variation Over Line Half-Cycle as a Function of Input Voltage (b) Frequency Variation Over Line Half-Cycle as a Function of Load.
Figure 9.
V
OFF vs. VE and VOFF vs. Input Voltage.
0
45
90
135
180
PI-6217-110110
120
230 VAC
180 VAC
135 VAC
115 VAC
Peak Load
90 VAC
110
100
90
80
70
60
50
40
30
20
10
Frequency
(kHz)
Line Conduction Angle (°C)
0
45
90
135
180
PI-6218-102910
120
110
100
90
80
70
60
50
40
30
20
10
Frequency
(kHz)
Line Conduction Angle (°C)
100% Peak Load
75% Peak Load
VIN = 115 VAC
25% Peak Load
50% Peak Load
Expected Frequency
Range at Peak
Rated Load
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