FOSLINK FSP34063SA Universal dc/dc converter Datasheet

UNIVERSAL DC/DC CONVERTER
FSP34063
„
FEATURES
„
z
z
z
z
z
z
z
z
Operation from 3.0V to 40V Input
Low Standby Current
Current Limiting
Output Switch Current to 1.6A
Output Voltage Adjustable
Frequency Operation to 100kHz
Precision 2% Reference
SOP8L and PDIP8L Packages
The FSP34063 Series is a monolithic control circuit
containing the primary functions required for DC-to-DC
converters. These devices consists of an internal
temperature compensated reference, comparator,
controlled duty cycle oscillator with an active current
limit circuit, driver and high current output switch. This
series is specifically designed for incorporating in
Step-Down and Step-Up and Voltage-Inverting
applications with a minimum number of external
components.
„
PIN CONFIGURATION
GENERAL DESCRIPTION
(Top View)
Switch Collector 1
8 Driver
Switch Emitter 2
7 IPK sensor
Timing Capacitor 3
6 VCC
Gnd 4
„
5 Comparator inverting input
REPRESENTATIVE SCHEMATIC DIAGRAM
Driver
Collector
Sw itch
1 Collector
8
S
Q
Q2
Q1
R
100
Ipk Sensor 7
2 Sw itch
Emitter
Ipk
CT
Oscillator
Vcc 6
Comparator
+
Comparator
Inverting
Input
1/10
-
5
1.25V
Reference
Regulator
3 Timing
Capacitor
4 Gnd
2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
„
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
VIR
VC(switch)
VE(switch)
VCE(switch)
VC(driver)
IC(driver)
ISW
PD
θJA
PD
θJA
TJ
TA
Parameter
Power Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage(VPin1=40V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
Driver Collector Current(Note1)
Switch Current
SOP8L: TA=25℃
Thermal Resistance
Power Dissipation and Thermal
Characteristics
PDIP8L: TA=25℃
Thermal Resistance
Operating Junction Temperature
Rating
40
-0.3~+40
40
40
40
40
100
1.6
600
160
1.25
100
+150
0~+70
-40~+85
-65~+150
Operating Ambient Temperature Range
Tstg
Storage Temperature Range
Notes: 1.Maximum package power dissipation limits must be observed.
2.ESD data available upon request.
„
Unit
V
V
V
V
V
V
mA
A
mW
℃/W
W
℃/W
℃
℃
℃
ELECTRICAL CHARACTERISTICS(VCC=5V, UNLESS OTHERWISE NOTED)
Symbol
Parameter
Oscillator section
fosc
Frequency
Ichg
Charge Current
Idischg
Discharge Current
Discharge to Charge
Idischg/Ichg
Current Ratio
Current Limit Sense
Vipk(sense)
Voltage
Output switch section
Saturation Voltage,
VCE(sat)
Darlington Connection
Saturation Voltage,
VCE(sat)
Darlington Connection
hFE
DC Current Gain
Collector Off-State
IC(off)
Current
Comparator section
Threshold Voltage
Vth
Reg(line)
Threshold Voltage Line
Regulation
Test Conditions
Min.
Typ.
Max.
Unit
VPin 5=0V, CT=1.0nF, TA=25℃
VCC=5.0V to 40V, TA=25℃
VCC=5.0V to 40V, TA=25℃
24
24
140
33
30
200
42
42
260
kHz
µA
µA
Pin7 to Vcc, TA=25℃
5.2
6.5
7.5
Ichg=Idischg, TA=25℃
300
400
450
mV
ISW=1.0A, Pins 1,8 connected
1.0
1.3
V
ISW=1.0A, ID=50mA, Forced β120
0.45
0.7
V
0.01
100
µA
1.25
1.275
1.29
V
1.4
6.0
mV
ISW=1.0A, VCE=5.0V, TA=25℃
50
75
VCE=40V
TA=25℃
T=0℃~75℃
VCC=3.0V to 40V
1.225
1.21
Total device
VCC=5.0V to 40V, CT=1.0nF,
3.5
mA
Pin7=VCC, VPin5>Vth, Pin2=Gnd,
remaining pins open
Note: 3.Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient
temperature as possible.
4.If the output switch is driven into hard saturation(non-Darlington configuration) at low switch currents(≤300mA)
and high driver currents(≥30mA), it may take up to 2.0µs for it to come out of saturation. This condition will
shorten the off time at frequencies≥30kHz, and is magnified at high temperatures. This condition does not occur
with a Darlington configuration, since the output switch cannot saturate. If a non-Darlington configuration is
ICC
2/10
Supply Current
2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
used, the following output drive condition is recommended:
Forced βof output switch:
I C output
≥ 10
I C driver − 7.0mA∗
*The 100Ω resistor in the emitter of the driver device requires about 7.0mA before the output switch conducts.
„
APPLICATION CIRCUITS
(1) Step-Up Converter
120µH
8
1
180
S
Q
Q2
Q1
R
7
Vin
12V
2
Ipk
Rsc
0.24
6
470µF
Oscillator
Vcc
3
Comparator
+
-
IN5189
CT
1.25V
Reference
Regulator
CT
680
pF
4
5
R2 56k
470µF
Vout
28V/200mA
Co
1.0µH
Vout
100
R1 10k
Optional Filter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
3/10
Conditions
Vin=9V to 12V, IO=200mA
Vin=12V, IO=50mA to 200mA
Vin=12V, IO=200mA
Vin=12V, IO=200mA
Results
20mV=0.035%
15mV=0.035%
500mVPP
80%
2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
(2) Step-Down Converter
8
1
S
Q
Q2
Q1
R
7
Vin
25V
2
Ipk
Rsc
0.11
6
470µF
Oscillator
Vcc
CT
Comparator
+
-
5
1.25V
Reference
Regulator
IN5819
3
CT
470
pF
100µH
4
1.0µH
R2 36k
R1 25k
470µF
Co
Vout
5.0V/500mA
Vout
100
Optional Filter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
4/10
Conditions
Vin=12V to 24V, IO=500mA
Vin=24V, IO=50mA to 500mA
Vin=24V, IO=500mA
Vin=24V, IO=500mA
Results
20mV=0.2%
5mV=0.05%
160mVPP
82%
2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
(3) Voltage Inverting Converter
8
1
S
Q
Q2
Q1
R
7
Vin
4.5V to 6.0V
2
Ipk
Rsc
0.26
6
470µF
Oscillator
Vcc
100µH
3
Comparator
+
-
5
1.25V
Reference
Regulator
IN5819
680
pF
4
R1 3k
R2
CT
470µF
Vout
-12V/100mA
Co
1.0µH
Vout
100
50k
Optional Filter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
5/10
Conditions
Vin=4.5V to 6.0V, IO=100mA
Vin=5.0V, IO=20mA to 100mA
Vin=5.0V, IO=100mA
Vin=5.0V, IO=100mA
Results
20mV=0.08%
30mV=0.12%
500mVPP
60%
2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
TYPICAL CHARACTERISTICS
Vce(sat) vs Ie
1.2
1.0
0.8
0.6
1.26
Reference Voltage(V)
1.4
0
440
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Ie, Emitter Current(A)
1.25
1.245
1.24
0 10 20 30 40 50 60 70 80 90 100
Temperature(℃)
Current Sense Voltage vs
Temperature
420
400
380
360
340
320
Reference Voltage vs Temperature
1.255
Icc, Supply Current (mA)
Current Sense Voltage(mV)
Vce(sat), Saturation Voltage(V)
„
0 10 20 30 40 50 60 70 80 90 100
Temperature(℃)
Standby Supply Current
vs Supply Voltage
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
5
10 15 20 25 30 35 40
Vcc, Supply Voltage(V)
Output Switch On-Off Time vs
Oscillator Timing Capacitor
6/10
1.8
1.75
1.7
1.65
1.6
Pin1,7,8=Vcc
Pin3,5=GND
1.55
1.5
1.45
1.4
100 300
700
Vcc=2~10V
TA=25℃
900 1100 1300 1500
Ie(mA)
ton-off, Output Switch On-Off Time(µs)
VCE(sat), (V)
1000
Emitter Follower Configuration Output
Saturation Voltage vs Emitter Current
Vcc=5.0V
TA=25℃
Pin7=Vcc
Pin5=GND
100
ton
10
toff
1
0.1
10
0.01
0.1
1
CT,Oscilllator Timing Capacitor(nF)
2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
„
ORDERING INFORMATION
FSP34063XXX
Package:
S: SOP8L
N: PDIP8L
„
Packing:
Blank: Tube or Bulk
A: Tape & Reel
Temperature Grade:
Blank: 0~70℃
D:-40~85℃
MARKING INFORMATION
(1) SOP8L
(2) PDIP8L
Logo
FSP34063
YYWWXX
Part number
Logo
FSP34063
YYWWXX
Part number
Internal code
Internal code
Date code:
YY: Year (01=2001)
WW: Nth week (01~52)
7/10
Date code:
YY: Year (01=2001)
WW: Nth week (01~52)
2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
„
PACKAGE INFORMATION
E
H
(1) SOP8L
θ
L
VIEW “A”
7°(4х)
D
7°(4х)
e
A1
B
A
A2
0.015х45°
C
VIEW “A”
Y
Symbol
A
A1
A2
B
C
D
E
e
H
L
Y
θ
8/10
Dimensions In Millimeters
Nom.
Max.
1.60
1.75
0.25
1.45
1.50
0.41
0.51
0.20
0.25
5.05
5.30
3.90
4.10
1.27
5.79
5.99
6.20
0.38
0.71
1.27
0.10
0ο
8ο
Min.
1.40
0.10
1.30
0.33
0.19
4.80
3.70
Dimensions In Inches
Min.
Nom.
0.055
0.063
0..004
0.051
0.057
0.013
0.016
0.0075
0.008
0.189
0.199
0.146
0.154
0.050
0.228
0.236
0.015
0.028
0ο
2007-1-25
Max.
0.069
0.010
0.059
0.020
0.010
0.209
0.161
0.244
0.050
0.004
8ο
UNIVERSAL DC/DC CONVERTER
FSP34063
(2) PDIP8L
D
E1
E-PIN 0.018inch
E
PIN #1INDENT 0.025 DEEP 0.006-0.008 Inch
15°(4х)
7°(4х)
C
A
A2
eB
S
e
A1
L
B
B2
B1
Symbol
A
A1
A2
B
B1
B2
C
D
E
E1
e
L
eB
S
9/10
Min.
0.38
3.1
0.36
1.4
0.81
0.20
9.02
7.62
6.15
2.92
8.38
0.71
Dimensions In Millimeters
Nom.
Max.
5.33
3.30
0.46
1.52
0.99
0.25
9.27
7.94
6.35
2.54
3.3
8.89
0.84
Min.
Dimensions In Inches
Nom.
3.5
0.56
1.65
1.14
0.36
9.53
8.26
6.55
0.015
0.122
0.014
0.055
0.032
0.008
0.335
0.300
0.242
3.81
9.40
0.97
0.115
0.330
0.028
0.130
0.018
0.060
0.039
0.010
0.365
0.313
0.250
0.100
0.130
0.350
0.033
2007-1-25
Max.
0.210
0.138
0.022
0.065
0.045
0.014
0.375
0.325
0.258
0.150
0.370
0.038
UNIVERSAL DC/DC CONVERTER
FSP34063
„
DESIGN FORMULA TABLE
Calculation
ton/toff
Step-Up
Step-Down
VOUT + VF
Vin (min) − Vsat − VOUT
VOUT + VF − Vin (min)
Vin (min) − Vsat
(ton+toff)
toff
Voltage-Inverting
VOUT + VF
Vin − Vsat
1/f
1/f
1/f
ton + toff
ton
+1
toff
ton + toff
ton
+1
toff
ton + toff
ton
+1
toff
ton
(ton + toff ) − toff
(ton + toff ) − toff
(ton + toff ) − toff
CT
4.0 ×10−5 ton
4.0 ×10−5 ton
4.0 ×10−5 ton
2 I out (max) (ton / toff + 1)
2 I out (max)
2 I out (max) (ton / toff + 1)
RSC
0.3 / I PK ( switch )
0.3 / I PK ( switch )
0.3 / I PK ( switch )
L(min)
Vin (min) − Vsat
Vin (min) − Vsat − Vout
IPK(switch)
I pk ( switch )
Co
9
t on (max)
I out ton
Vripple ( pp )
I pk ( switch )
I pk ( switch ) (toff + ton )
8Vripple ( pp )
t on (max)
Vin (min) − Vsat
I pk ( switch )
9
t on (max)
I out ton
Vripple ( pp )
Vsat=Saturation voltage of the output switch.
VF=Forward voltage drop of the output rectifier.
The following power supply characteristics must be chosen:
Vin-Norminal input voltage
Vout-Desired output voltage, |vout|=1.25(1+ R2/R1)
Iout-Desired output current
fmin-Minimum desired output switching frequency at the selected values of Vin and Io
Vripple(pp)-Desired peak-to-peak output ripple voltage, In practice, the calculated capacitor value will need to be
increased due to its equivalent series resistance and board layout. The ripple voltage should be kept to a low value
since it will directly affect the line and load regulation.
10/10
2007-1-25
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