PL34063AQ8 [CYSTEKEC]
DC-to-DC Converter Control Circuit; DC至DC转换器控制电路
| 型号： | PL34063AQ8 |
| 厂家： | 
CYSTECH ELECTONICS CORP. |
| 描述： | DC-to-DC Converter Control Circuit |
| 文件： | 总7页 (文件大小：197K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Spec. No. : C501Q8
Issued Date : 2003.03.21
Revised Date :
CYStech Electronics Corp.
Page No. : 1/7
DC-to-DC Converter Control Circuit
PL34063AQ8
Description
The PL34063AQ8 is a monolithic control circuit containing the primary functions required for
DC-to-DC converters. This device consists of an internal temperature compensated reference,
comparator, control- led duty cycle oscillator with an active current limit circuit, driver and high current
output switch.
Features
• 3V to 40V Input Voltage Operation
• Internal 1.6A Peak Current Switch
• Internal ±1.8% Reference
• Low Quiescent Current at 1.6mA
• Frequency Operation from 100Hz~100KHz
• Current Limiting
Applications
• Saver for Cellular Phone
• DC-DC Converter Module
Typical Application Circuit
L1
Fig1.Saver Circuit for Cellular Phone
200µH
Vout
PL34063A
8
1
RSC
Vin
D1
1N5819
Cout
220µF
7
6
5
2
3
4
CT
470ρF
RB
33kΩ
C1
100µF
RA
5.6kΩ
PL34063AQ8
CYStek Product Specification
Spec. No. : C501Q8
Issued Date : 2003.03.21
Revised Date :
CYStech Electronics Corp.
Page No. : 2/7
Pin Connections
8
7
6
5
Pin1:Switch Collector
Pin2:Switch Emitter
Pin3:Timing Capacitor
Pin4:Gnd
Pin5:Comparator Inverting Input
Pin6:Vcc
Pin7:Ipk Sense
1
2
3
4
Pin8:Driver Collector
Absolute Maxium Rating
Supply Voltage ....................................................................................................................................... 40 V
Comparator Input Voltage Range ........................................................................................... -0.3 V ~ 40 V
Switch Collector Voltage ....................................................................................................................... 40 V
Switch Emitter Voltage .......................................................................................................................... 40 V
Switch Collector to Emitter Voltage ...................................................................................................... 40 V
Driver Collector Voltage ........................................................................................................................ 40 V
Switch Current ....................................................................................................................................... 1.6A
Power Dissipation DIP Package Ta=25°C........................................................................................ 625 mW
Thermal Resistance Junction to Air............................................................................................. 160 °C / W
Operating Junction Temperature......................................................................................................... 125 °C
Operating Ambient Temperature Range......................................................................................... 0 ~ 70 °C
Storage Temperature Range.................................................................................................. -40 °C ~ 125 °C
Electrical Characteristics (Vcc=5V,Ta=25°C, unless otherwise specified)
Parameter
Test Condition
Symbol
Min. Typ. Max. Unit
Oscillator
Charging Current
Ichg
24
140
-
5.2
250
35
220
0.6
6.5
300
42
260
-
7.5
350
uA
uA
V
5.0V≤VCC≤40V
Discharge Current
Idischg
5.0V≤VCC≤40V
Pin3
Voltage Amplitude
Discharge to Charge Current Ratio
Current Limit Sense Voltage
VOSC
VIPK(Sense) =VCC
IChg=Idischg
IDischg/Ichg
VIPK(Sence)
mV
Output Switch
Saturation Voltage, Darlington
ISW=1.0A,
VCE(Sat)
VCE(Sat)
-
-
1.0
1.3
V
V
Connection
VC(Driver)=VC(Switch)
ISW=1.0A, IC(Driver)=50mA
(Forced β ≈ 20)
Saturation Voltage
0.4
75
0.01 100
0.7
-
DC Current Gain
Collector Off-State Current
ISW=1.0A, VCE=5.0V
VCE=40V
hFE
50
-
V
uA
ICC(Off)
Comparator
Threshold Voltage
1.227 1.250 1.273
VFB
V
0°C≤Ta≤70°C
Threshold Voltage
1.210
-
1.29
6
Threshold Voltage Line Regulation
Input Bias Current
Regline
IIB
-
-
1.5
-20 -400
mV
nA
3.0V≤VCC≤40V
VIN=0V
VIPK(Sence)=VCC
VPin5>VFB,
Supply Current
ICC
-
1.6
3
mA
5.0V≤VCC≤40V
CT=0.0001uF,Pin2=Gnd
Remaining pins open
PL34063AQ8
CYStek Product Specification
Spec. No. : C501Q8
Issued Date : 2003.03.21
Revised Date :
CYStech Electronics Corp.
Page No. : 3/7
Block Diagram
DRI
SC
Pin1:1.6A Switch Collector
Pin8:Driver Collector
Q2
Q S
R
Q1
80Ω
IPK
Pin7:Highside Current Sense
Input, VCC-VIPK=300mV
SE
IPK
Oscillator
CT
Pin2:Darlington Switch Emitter
VCC
TC
Comparator
Pin6:Power Supply Input
+
-
1.25V
Reference Voltage
GND
FB
Pin4:Power GND
Pin5:Feedback Comparator
Inverting Input
Application Information
Design Formula Table
Calculation
Step-Down
Step-Up
Voltage-Inverting
Vout+VF /
Vout+VF-Vin(min) /
Vin(min)-Vsat
|Vout| + VF /
Vin-Vsat
ton / toff
Vin(min) -Vsat-VOut
1/Fmin
(ton + toff) max
1/Fmin
4*10-5ton
1/Fmin
4*10-5ton
CT
IC(switch)
RS
4*10-5ton
2*Iout(max)
2*Iout(max)(ton+toff/toff)
0.3 / IC(switch)
2*Iout(max)(ton+toff/toff)
0.3 / IC(switch)
0.3 / IC(switch)
(Vin(min)-Vsat-Vout / IC(switch))
*ton(max)
(Vin(min)-Vsat / IC(switch))
*ton(max)
(Vin(min)-Vsat/ IC(switch))
*ton(max)
L(min)
CO
IC(switch)*(ton+toff) /
Iout*ton / VRipple(P-P)
Iout*ton / VRipple(P-P)
8VRipple(P-P)
Vsat : Saturation voltage of the output switch.
VF : Forward voltage drop of the ringback rectifier.
The following power supply characteristics must be chosen :
Vin : Nominal input voltage.
Vout : Desired output voltage.
Iout - Desired output current
|Vout|=1.25*(1+RB/RA)
Fmin : Minimum desired output switching frequency at the selected values for Vin and Iout.
VRipple(P-P) : Desired peak to peak output ripple voltage in practice, the calculated value will need to be increased
due to the capacitor equivalent series resistance and board layout. The ripple voltage should be kept to a low value
since it will directly effect the line and load regulation.
PL34063AQ8
CYStek Product Specification
Spec. No. : C501Q8
Issued Date : 2003.03.21
Revised Date :
CYStech Electronics Corp.
Page No. : 4/7
Application Information
(Continued)
Fig.2 Step-Up Converter
D1
L1
Vout
28V / 200mA
µ
PL34063A
R1
150Ω
Cout
8
7
6
1
2
3
4
RSC
0.22Ω
Vin
220µF
C1
CT
680ρF
5
100µF
RB
47kΩ
RA
2.2kΩ
Line Regulation : 100mV (Vin=8V~16V, @Io=200mA)
Load Regulation : 5mV (Vin=12V, @Io=80mA~200mA)
Fig.3 Step-Up Converter With External NPN Switch
L1
Vout
D1
R1
PL34063A
8
7
6
1
2
3
4
RSC
Cout
Q1
Vin
R2
C1
CT
5
RB
RA
Fig.4 Step-Down Converter
L1
µ
Vout
5V / 500mA
PL34063A
8
1
2
3
4
RSC
0.25Ω
Vin
Cout
470µF
7
6
5
D1
1N5819
CT
470ρF
C1
100µF
RB
3.6kΩ
RA
1.2kΩ
Line Regulation : 40mV (Vin=10V~20V, @Io=500mA)
Load Regulation : 5mV (Vin=15V, @Io=10mA~500mA)
Short Circuit Current : 1.3A (Vin=15V, @RL=0.1Ω)
PL34063AQ8
CYStek Product Specification
Spec. No. : C501Q8
Issued Date : 2003.03.21
Revised Date :
CYStech Electronics Corp.
Page No. : 5/7
Application Information
(Continued)
Fig.5 Step-Down Converter With External PNP Saturation Switch
PL34063A
R1
R2
8
7
6
1
2
3
4
Q1
L1
D1
RSC
C1
Vout
CT
5
Cout
RB
RA
Fig.6 Voltage Inverting Converter
Vout
-12V / 100mA
PL34063A
D1
1N5819
8
1
RSC
0.25Ω
7
6
2
3
4
L1
100µH
Cout
470µF
Vin
4.5V-6V
CT
680ρF
5
C1
100µF
RA
953Ω
RB
8.2kΩ
Line Regulation : 20mV (Vin=4.5V~6V, @Io=100mA)
Load Regulation : 100mV (Vin=5V, @Io=10mA~100mA)
Fig.7 Voltage Inverting Converter With External PNP Saturation Switch
PL34063A
R2
R1
Q1
L1
8
7
6
1
2
3
4
RSC
Vin
D1
5
CT
RA
Vout
C1
RB
Cout
PL34063AQ8
CYStek Product Specification
Spec. No. : C501Q8
Issued Date : 2003.03.21
Revised Date :
CYStech Electronics Corp.
Page No. : 6/7
Characteristic Curves
Emitter Follower Configuration Output
Saturation Voltage vs Emitter Current
Output Switch On-Off Time vs Oscillator
Timing Capacitance
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1
1000
100
10
CC
V =5.0V
CC
Pin 7=V
Pin 5=GND
A
T =25℃
CC
V =5V
ton
CC
Pins 1,7,8=V
Pins 3,5=Gnd
A
T =25℃
(See Note )
toff
1
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6
0.01
0.1
1
10
Emitter Current---IE(A)
Oscillator Timing Capacitance---CT(nF)
Common Emitter Configuration Output Switch
Saturation Voltage vs Collector Current
Current Limit Sense Voltage vs Temperature
1.1
1
400
380
360
340
320
300
280
260
240
220
200
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
CC
V =5.0V
Ichg=Idischg
Darlington Connection
VCC=5V
Pin 7=VCC
Pins 2,3,5=Gnd
TA=25℃
(See Note)
Forced β=20
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6
-75 -50 -25
0
25 50 75 100 125
Collector Current---IC(A)
Ambient Temperature---TA(℃)
Standby Supply Current vs Supply Voltage
Note: Low duty cycle pulse techniques are used during test
to maintain junction temperature as close to ambient
temperature as possible.
3.6
3.2
2.8
2.4
2
1.6
1.2
0.8
0.4
0
T
C =10nF
CC
Pin 7=V
Pin 2=Gnd
0
5
10
15
20
25
30
35
40
Supply Voltage---VCC(V)
PL34063AQ8
CYStek Product Specification
Spec. No. : C501Q8
Issued Date : 2003.03.21
Revised Date :
CYStech Electronics Corp.
Page No. : 7/7
SO-8 Dimension
Right side View
Marking:
G
Top View
A
I
34063A
C
B
H
J
D
Front View
Part A
E
K
Part A
L
8-Lead SO-8 Plastic Package
CYStek Package Code: Q8
N
M
O
F
*: Typical
Millimeters
Inches
DIM
Millimeters
Inches
DIM
Min.
Max.
Min.
4.85
3.85
5.80
1.22
0.37
3.74
1.45
4.80
Max.
5.10
3.95
6.20
1.32
0.47
3.88
1.65
5.10
Min.
Max.
Min.
Max.
0.20
0.70
0.25
0.52
0.50
0.13
0.15
A
B
C
D
E
F
0.1909
0.1515
0.2283
0.0480
0.0145
0.1472
0.0570
0.1889
0.2007
0.1555
0.2441
0.0519
0.0185
0.1527
0.0649
0.2007
I
0.0019
0.0118
0.0074
0.0145
0.0118
0.0031
0.0000
0.0078
0.0275
0.0098
0.0204
0.0197
0.0051
0.0059
0.05
0.30
0.19
0.37
0.30
0.08
0.00
J
K
L
M
N
O
G
H
Notes: 1.Controlling dimension: millimeters.
2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material.
3.If there is any question with packing specification or packing method, please contact your local CYStek sales office.
Material:
• Lead: 42 Alloy; solder plating
• Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
Important Notice:
• All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek.
• CYStek reserves the right to make changes to its products without notice.
• CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems.
• CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
PL34063AQ8
CYStek Product Specification
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