NJM2375/A

NJM2375/A
POWER FACTOR CONTROLLER
■ GENERAL DESCRIPTION
The NJM2375/A are active power factor controllers, which limit
the harmonic current resulting from the power supply block of
electrical devices.
They include a startup timer, an one quadrant multiplier, a zero
current detector to ensure critical condition operation, a
transconductance error amplifier, high precision reference, a
current sensing comparator, and a totem pole output ideally suited
for driving a power MOSFET.
They also contain protection circuits for overvoltage,
cycle-by-cycle overcurrent, and maximum peak current.
The startup threshold of NJM2375A is lower than that of
NJM2375.
■ PACKAGE OUTLINE
NJM2375D/AD
NJM2375M/AM
NJM2375V/AV
NJM2375L/AL
■ FEATURES
● Overvoltage Comparator Eliminates Runaway Output Voltage
● Internal Quick Start
● Internal Startup Timer
● One Quadrant Multiplier
● Zero Current Detector
● High Precision Reference (±2%)
● Totem Pole Output with High State Clamp
● Undervoltage Lockout
(Startup Threshold/NJM2375:13V typ., NJM2375A:10.4V typ.)
● Low Startup and Operating Current
● Bipolar Technology
● Package Outline DIP8,DMP8,SSOP14,SIP8
■ PIN CONFIGURATION
NJM2375D/AD
NJM2375M/AM
NJM2375V/AV
Ver.2003-07-18
NJM2375L/AL
PIN FUNCTION
1. MULT
2. NC
3. CSENSE
4. NC
5. DZERO
6. NC
7. GND
PIN FUNCTION
1. VFB
2. COMP
3. MULT
4. CSENSE
5. DZERO
6. GND
7. DRIVE
8. V+
8. DRIVE
9. NC
10. V+
11. NC
12. VFB
13. NC
14. COMP
-1-
NJM2375/A
■ BLOCK DIAGRAM
■ ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
ICC+IZ
30
mA
Output Current (Source or Sink)
IO
500
mA
Current Sense, Multiplier, and Voltage Feedback Inputs
VIN
-1.0 to +10
V
IIN
50
mA
Total Power Supply and Zener Current
Zero Current Detect Input
High State Forward Current
Low state Forward Current
Power Dissipation
-10
PD
(DIP8)
500
(DMP8)
300
mW
(SSOP14) 300
(SIP8)
700
Operating Temperature Range
TOPR
-40 to +85
°C
Storage Temperature Range
TSTG
-50 to +150
°C
-2-
Ver.2003-07-18
NJM2375/A
■ ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25°C)
● ERROR AMPLIFIER
PARAMETER
SYMBOL
Voltage Feedback input Threshold 1
VFB1
Voltage Feedback input Threshold 2
VFB2
Line Regulation
RegLine
MIN.
TYP.
MAX.
UNIT
+
TEST CONDITION
2.465
2.500
2.535
V
+
2.440
2.500
2.540
V
+
V =12 to 28V
-
1.0
10
mV
VFB=0V
-
-0.1
-0.5
µA
80
100
130
µmho
V =12V
V =28V
Input Bias Current
IIB
Transconductance
gm
Output Current (Source)
IOSO
VFB=2.3V
-
10
-
µA
Output Current (Sink)
IOSI
VFB=2.7V
-
10
-
µA
Output Voltage Swing 1
VOH(ea)
VFB=2.3V (High State)
5.8
6.4
-
V
Output Voltage Swing 2
VOL(ea)
VFB=2.7V (Low State)
-
1.7
2.4
V
MIN.
TYP.
MAX.
UNIT
1.065
×VFB
1.080
×VFB
1.095
×VFB
V
MIN.
TYP.
MAX.
UNIT
-
-0.1
-0.5
µA
● OVERVOLTAGE COMPARATOR
PARAMETER
Voltage Feedback
Input Threshold
SYMBOL
TEST CONDITION
VFB(0V)
● MULTIPLIER
PARAMETER
Input Bias Current
SYMBOL
IIB
TEST CONDITION
VFB=0V(FB Pin)
Input Threshold
Vth(M)
(FB Pin)
1.05VOL
×(EA)
1.20VOL
×(EA)
-
V
Dynamic Input Voltage Range
VPIN3
Multiplier Input Pin
0 to 2.5
0 to 3.5
-
V
VPIN2
Compensation Pin
Vth(M)
to
Vth(M)
+1.0V
Vth(M)
to
Vth(M)
+1.5V
-
V
K
Vmp=0.5V,
Vcomp=Vth(M)+1.0V
0.43
0.65
0.87
µmho
2
Multiplier Gain*
● ZERO CURRENT DETECTOR
PARAMETER
Input Threshold Voltage
SYMBOL
Vth
MIN.
TYP.
MAX.
UNIT
+
TEST CONDITION
1.33
1.60
1.87
V
+
V Increasing
Hysteressis
VH
V Decreasing
100
200
300
mV
Input Clamp Voltage
VIH
High State (IDET=+3.0mA)
5.20
5.80
-
V
VIL
Low State (IDET=-3.0mA)
0.30
0.70
1.00
V
Ver.2003-07-18
-3-
NJM2375/A
■ ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25°C)
● CURRENT SENSING COMPARATOR
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Input Bias Current
IIB
Isence=0V
-
-0.15
-1.0
µA
Input Offset Voltage
VIO
Vcompe=1.10V, VM=0V
-
9.0
25.0
mV
Vth(MAX)
1.30
1.50
1.80
V
tPHL
-
200
-
nS
MIN.
TYP.
MAX.
UNIT
Maximum Current Sense
3
Input Threshold *
Delay to Output
● DRIVE OUTPUT
PARAMETER
Output Voltage Low State
Output Voltage High State
SYMBOL
TEST CONDITION
VOL1
Isink=20mA
-
0.3
0.8
V
VOL2
Isink=200mA
-
2.4
3.3
V
VOH1
Isource=20mA
9.8
10.3
-
V
VOH2
Isource=200mA
7.8
8.4
-
V
Isource=20mA
+
CL=15pF, V =30V
14
16
18
V
Output Voltage High State
VC(MAX)
Output Voltage Rise Time
tr
CL=1.0nF
-
100
150
nS
Output Voltage Fall Time
tf
CL=1.0nF
-
50
120
nS
-
0.1
0.5
V
MIN.
TYP.
MAX.
UNIT
200
620
-
µS
Output Voltage with UVLO Activated
VC(UVLO)
+
V =7V, Isink=1.0mA
● RESTART TIMER
PARAMETER
Restart Time Delay
-4-
SYMBOL
tDLY
TEST CONDITION
Ver.2003-07-18
NJM2375/A
■ ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25°C)
● UNDERVOLTAGE LOCKOUT
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
+
11.5
13.0
14.5
V
+
7.0
8.0
9.0
V
3.8
5.0
6.2
V
+
9.4
10.4
11.4
V
+
6.8
7.8
8.8
V
1.4
2.6
3.8
V
MIN.
TYP.
MAX.
UNIT
-
0.25
0.4
mA
-
6.5
12
mA
-
9.0
20
mA
30
36
-
V
(NJM2375)
Startup Threshold
Vth(on)
Minimum Operating
Vshutdown
Voltage After Turn-On Hysteresis
V Increasing
V Decreasing
VH
(NJM2375A)
Startup Threshold
Vth(on)
Minimum Operating
Voltage After Turn-On
Hysteresis
Vshutdown
V Increasing
V Decreasing
VH
● TOTAL DEVICE
PARAMETER
SYMBOL
TEST CONDITION
Power Supply Current
Startup
ICC1
Operating
ICC2
Dynamic Operating
4
Power Supply Zener Voltage*
+
V =7.0V
ICC3
50kHz, CL=1.0nF
VZ
ICC=25mA
● NOTES
*1 : Adjust V+ above the startup threshold before setting to 12V.
Vth(max)
*2 : K=
VM ×(Vcomp - Vth(M))
*3 : This parameter is measured with VFB=0V,and VM=3.0V.
*4 : Do not supply higher voltage above the zener voltage to 8pin, because the internal zener diode protects the IC
from surge.
Ver.2003-07-18
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NJM2375/A
■ TYPICAL APPLICATIONS
-6-
Ver.2003-07-18
NJM2375/A
■ TYPICAL CHARACTERISTICS
Current Sense Input Threshold
vs. Multiplier Input
Current Sense Input Threshold
vs. Multiplier Input (Expanded View)
(V+ =12V,Ta=25℃)
+
(V =12V,Ta=25℃)
1.6
0.08
PIN2=3.75V
1.2
PIN2=3.5V
PIN2=2.75V
PIN2=3.25V
PIN2=3.0V
1
PIN2=2.5V
0.8
0.6
0.4
PIN2=2.25V
0.2
0.06
0.5
1
1.5
2
2.5
3
3.5
PIN2=3.0V
0.05
PIN2=2.75V
0.04
PIN2=2.25V
0.03
0.02
0
0
0
-0.2
4
-0.1
0
0.1
0.2
Multiplier Input Voltage ＶＭ (Ｖ）
Multiplier Input Voltage ＶＭ （Ｖ）
Supply Current vs. Supply Voltage (NJM2375)
Supply Current vs. Supply Voltage (NJM2375A)
(VFB=0V,C L=1nF,f=50kHz,Ta=25℃)
(VFB=0V,C L=1nF,f=50kHz,Ta=25℃)
30
30
25
25
Supply Current Ｉcc （ｍＡ）
Supply Current Icc (mA)
PIN2=2.5V
PIN2=3.25V
0.01
PIN2=2.0V
-0.5
PIN2=3.75V
0.07
PIN2=3.5V
Current Sense Threshold
ＶＣＳ （Ｖ）
Current Sense Threshold
ＶＣＳ （Ｖ）
1.4
20
15
10
5
0
20
15
10
5
0
0
5
10 15 20 25 30
Supply Voltage Ｖ (V)
35
40
Drive Output Voltage vs. Output Current
0
5
10 15 20 25 30
＋
Supply Voltage Ｖ （Ｖ）
35
40
Drive Output Waveform
(V+ =12V,Ta=25℃)
Output Voltage Vｏ （Ｖ）
12
10
VOH
8
6
4
2
VOL
0
0
Ver.2003-07-18
0.1
0.2
0.3
Output Current Ｉｏ (A）
0.4
-7-
NJM2375/A
Voltage Feedback Input Threshold Change
+
vs. Temperature
=12V)
Temperature (V(V12V)
Overvoltage vs. Temperature
(V+ =12V)
110
2.54
Overvoltage Input Threshold
ＶＦＢ（０Ｖ） （％ＶＦＢ ）
Voltage
Feedback
Change
Voltage
FeedbackThreshold
Input Threshold
ChangeＶＦ
V（V）
FB (V)
■ TYPICAL CHARACTERISTICS
2.52
2.5
2.48
2.46
109
108
107
106
105
-50 -25
0
25
50
75
100 125 150
-50 -25
Voltage
1.75
600
500
1.7
400
1.65
300
Current
1.6
-50 -25
0
25
50
200
75 100 125 150
Undervoltage Lockout Thresholds vs. Temperature
14
600
500
400
-50 -25
Startup Threshold（Ｖ ,Increasing)
NJM2375A
10
NJM2375
8
NJM2375A
Minimum Opearting Threshold（Ｖ＋,Decreasing）
6
25
50
75
100 125 150
Ambient Temperature Ta (℃)
-8-
0
25
50
75 100 125 150
Ambient Temperature Ｔａ （℃）
Zero Current Detector Input Threshold Voltage vs.
Temperature (V+=12V)
1.8
Threshold Voltage Ｖｔｈ （Ｖ）
Supply Voltage V+ (V)
＋
0
100 125 150
300
NJM2375
-50 -25
75
(V+ =12V)
700
Ambient Temperature Ｔａ （℃）
12
50
Restart Timer Deley vs. Temperature
Restart Timer Delay
(uS)
ｔＤＬＡ （μＳ）
1.8
Quickstart
Voltage・Current
QuickstartCharge
Charge Voltage
Current
+
vs.Temperature
(V+(V
=12V)
=12V)
vs.
Temperature
25
Ambient Temperature Ta （℃）
Quickstart Charge Current Iｃｈｇ （μＡ）
Quickstart Charge Voltage Ｖｃｈｇ （Ｖ）
Ambient Temperature Ｔａ （℃）
0
1.7
Upper Threshold （Ｖｉｎ,Increasing）
1.6
1.5
1.4
Lower Threshold （Ｖｉｎ,Decreasing）
1.3
1.2
-50 -25
0
25
50
75
100 125 150
Ambient Temperature Ｔａ （℃）
Ver.2003-07-18
NJM2375/A
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
Ver.2003-07-18
-9-