SENSITRON PFCU

SENSITRON
SEMICONDUCTOR
PFCU-1500
TECHNICAL DATA
DATA SHEET 4158, REV. E
1500W Single-Phase Power Factor Correction Converters
Description
Harmonic current distortion is a common power quality problem. Its adverse effects include
degradation of system voltage waveforms, reduction of power factor, etc. The 1500W single-phase
ac-dc converter with Power Factor Correction (PFC) is designed to reduce harmonic currents and
achieve near unity power factor in single-phase systems with frequency ranging from 45 Hz to 65Hz.
The 1500W PFC converter is composed of a rectifier bridge followed by a boost dc-dc converter
employing average current control.
Features
•
•
•
•
•
•
•
•
Single-phase AC input, 85VAC ~ 265VAC input voltage, 45Hz ~ 65 Hz input frequency
395VDC output voltage
Up to 1500W output power
50kHz switching frequency
Near unity power factor
Maximum 6% total harmonic current distortion at 220VAC, 1500W
Over voltage, under voltage, over temperature protection, and instantaneous input current
protection.
Base plate rated to 100 oC
Block Diagram
Voltage
Regulator
DC/DC
15 ohm
+12V
DC+
Inrush current resistor
L
N
100 ohm
Average Current
Controller
L_EN
_
Vref
+
Enable
TEMP
DC-
TEMP
Sensor
COM
ON
Figure 1 Block diagram of 1500W single-phase PFC Converter
• 221 WEST INDUSTRY COURT • DEER PARK, NY 11729-4681 • PHONE (631) 586-7600 • FAX (631) 242-9798 •
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SENSITRON
SEMICONDUCTOR
PFCU-1500
TECHNICAL DATA
DATA SHEET 4158, REV. E
Table 1 Electrical Characteristics (TA=25 oC, unless otherwise specified)
PARAMETER
SYMBOL MIN
TYP
MAX
UNIT
INPUT
Input Voltage
Vin
85
265
VAC
Input Frequency
f
45
65
Hz
85
V
1.5
sec
22
50
A
390
395
400
V
376
380
383
V
1500
W
Startup Input Voltage
75
Soft Start Time
I0=0 A, Output filter capacitor = 1400μF
Inrush Current
I0=0 A
80
0.7
OUTPUT
Output Voltage
I0=0.4A
V0
I0=4.0A
Output Power (See note 1)
P0
PROTECTION
Over Output Voltage Protection (Latching)
460
VDC
Over Instantaneous Input Current Protection (Auto Recovery)
59
A
Thermal Protection (Auto Recovery)
100
o
C
MISCELLANEOUS
Operating Temperature (See note 2)
TA
Thermal Resistance (Junction to Case)
Rөjc
-55
100
C
o
0.09
Isolation (Input to Case)
o
C/W
1500
VAC
ELECTRICAL PERFORMANCE
Power Factor
PF
I0=2 A
Vin= 85VAC
3
4
Vin= 220VAC
3
4
4
7
3
6
Vin= 265VAC
Total Harmonic Current
Distortion (See note 1)
Vin= 85VAC
I0=4 A
0.99
ATHD
Vin= 220VAC
%
%
Vin= 265VAC
I0=2 A
Vin= 85VAC
88
Vin= 220VAC
92
Vin= 265VAC
Efficiency
Vin= 85VAC
I0=4 A
η
%
93
84
Vin= 220VAC
93
Vin= 265VAC
94
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%
SENSITRON
SEMICONDUCTOR
PFCU-1500
TECHNICAL DATA
DATA SHEET 4158, REV. E
Note:
1) When the output power is below 10% of the rated power, the input current will be significantly distorted.
However, the output voltage remains in regulation.
2) Not tested on actual units. Ensured by design.
PIN Description
SYMBOL
DESCRIPTION
N, L
DC+, DC-
AC line inputs
DC outputs
L_EN
Load enable pin. Open collector output with an internal 100 ohm resistor. Maximum collector
current is 100mA. When Vo is lower than 365V, L_EN is shorted to “COM”.
ON
PFC enable pin. When “ON” pin is connected to COM, PFC is enabled. Otherwise, PFC is
disabled and Vo is the rectified AC input voltage.
COM
Control Signal Reference. Connected to “DC-“internally.
12V
Bias Voltage Supply. Output current up to 20mA.
TEMP
Substrate temperature sensor output. 10mV/ Kelvin Or (TEMP × 100 − 273 ) oC
TYPICAL APPLICATION
L
L_EN
DC+
EMI
AC Line
Load
PFC
Filter
N
DC-
Figure 2. Typical application of 1500W single-phase PFC converter
Figure 2 illustrates the configuration of 1500W single-phase PFC converter in a typical application.
External capacitor filter is required at the PFC converter output. Selection of the output capacitor is
usually determined by the switching frequency ripple current, the second harmonic ripple current, the
DC voltage, the output ripple voltage and the hold-up time. All electrical characteristics in this
datasheet are tested with an output capacitor of 1400μF, which generates maximum 20V peak-peak
2nd harmonic ripple voltage.
The inrush current is limited by an internal 15 ohm surge resistor. To reduce power loss, the resistor is
shorted after the PFC is powered up for 350m sec, no matter if the PFC converter is enabled. Having
a heavy load connected to the PFC output during start-up time will delay the charge of the output
capacitor, and may result in high input current spikes. If customer load does not have under voltage
lockout, it is recommended to insert a switch (e.g. a relay), controlled by the pin “L_EN”, between the
load and the output capacitor, as shown in Figure 2. “L_EN” changes its status when the output
voltage reaches 365VDC. The logic of “L_EN” is configurable.
• 221 WEST INDUSTRY COURT • DEER PARK, NY 11729-4681 • PHONE (631) 586-7600 • FAX (631) 242-9798 •
• World Wide Web Site - http://www.sensitron.com • E-mail Address - [email protected] •
SENSITRON
SEMICONDUCTOR
PFCU-1500
TECHNICAL DATA
DATA SHEET 4158, REV. E
MECHANICAL OUTLINE
• 221 WEST INDUSTRY COURT • DEER PARK, NY 11729-4681 • PHONE (631) 586-7600 • FAX (631) 242-9798 •
• World Wide Web Site - http://www.sensitron.com • E-mail Address - [email protected] •
SENSITRON
SEMICONDUCTOR
PFCU-1500
TECHNICAL DATA
DATA SHEET 4158, REV. E
DISCLAIMER:
1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product
characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version of the
datasheet(s).
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equipment , and safety equipment) , safety should be ensured by using semiconductor devices that feature assured safety or by means of users’
fail-safe precautions or other arrangement .
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the user’s units according to the datasheet(s). Sensitron Semiconductor assumes no responsibility for any intellectual property claims or any
other problems that may result from applications of information, products or circuits described in the datasheets.
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a value exceeding the absolute maximum rating.
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• 221 WEST INDUSTRY COURT • DEER PARK, NY 11729-4681 • PHONE (631) 586-7600 • FAX (631) 242-9798 •
• World Wide Web Site - http://www.sensitron.com • E-mail Address - [email protected]