XC9107D01DR [TOREX]
Switching Controller,;
| 型号： | XC9107D01DR |
| 厂家： | 
Torex Semiconductor |
| 描述： | Switching Controller, |
| 文件： | 总11页 (文件大小：295K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
XC9106/XC9107Series
ETR0405_005
PWM Control, PWM/PFM Switching Control,
Step-Up DC/DC Converters, Externally Applied Vref
☆GreenOperation-Compatible
■GENERAL DESCRIPTION
The XC9106 / XC9107 series are step-up DC/DC controller ICs with an externally applied reference voltage (Vref).
Output voltage will be set with external resistors (RFB1 and 2) and Vref value. The series make it easy to control output
voltage externally and are suited to software applications that need to vary voltage, such as LCD power supply for PDA.
Output will be stable no matter which load capacitors are used but if a low ESR capacitor is used, RSENSE of about 0.1Ω will
be required and phase compensation will be achieved. This makes the use of ceramic capacitors much easier, and allows for
lower output ripple and reduced PCB area requirements. Tantalum and electrolytic capacitors can also be used, in which
case, RSENSE becomes unnecessary.
Oscillation frequencies of high clock, low ripple 300kHz and low supply current 100kHz are available.
The XC9107 series are PWM/PFM automatic switching controlled. Control switches from PWM to PFM during light loads with
the XC9107 and the series is highly efficient from light loads to large output currents. By bringing the whole circuit down
while the series is in the stand-by mode (CE/PWM pin: low), supply current can be reduced to less than 1.0μA.
■FEATURES
■APPLICATIONS
●Power supply for LCDs
Input Voltage
Power
: 0.9V ~ 10V
●E-book Readers / Electronic dictionaries
●Smart phones / Mobile phones
●Note PCs / Tablet PCs
Supply Voltage Range : 1.8V~10.0V and more than
Vref+0.7V
VREF Input Range
Output Voltage
: 0.8V~2.5V (±2.0%)
: Vref x external split resistor ratio
VOUT=Vref x (RFB1+RFB2)/RFB2
●Digital audio equipments
Oscillation Frequency : 300kHz, 100kHz (±15%)
●Multi-function power supplies
Output Current
: More than 30mA
(VIN=3.3V, VOUT=20V,
when external components are
used as in the circuits below.)
: PWM (XC9106)
Controls
: PWM/PFM auto-switching
(XC9107)
High Efficiency
Stand-by Current
Load Capacitors
: 85% (TYP.)
: ISTB = 1.0μA (MAX.)
: Low ESR capacitors compatible
Externally Applied Reference Voltage (Vref)
Packages : SOT-25, USP-6B
Environmentally Friendly : EU RoHS Compliant, Pb Free
■TYPICAL PERFORMANCE
■
TYPICAL APPLICATION CIRCUIT
CHARACTERISTICS
XC9107D003MR
Circuit as left
RSENSE: 100m Ω
V
DD=VIN=3.3V, IOUT=30mA
30
25
20
15
10
5
for Ceramic CL
*
SD : MA737
L : 10µH
CFB : 27pF
V
= 8V~25V
RFB1 :
270k Ω
RFB2 :
30k Ω
OUT
I
= 30mA
OUT
V
= 3.3V
IN
CIN
0
Nch Pow er
MOS FET
2SK2159
1
2
3
5
4
0.0
0.5
1.0
1.5
Vref (V)
2.0
2.5
3.0
Ceramic CL :
10µF
XC9107D003MR
Circuit as left
DD=VIN=3.3V
V
CE/V ref
30
25
20
15
10
5
0.8V~2.5V
D/A converter
2.5V
2.0V
1.5V
* RSENSE is of no use in light load (uncontinuous mode)
applications such as a small LCD, even using ceramic
capacitor.
Vref=0.8V
0
0.1
1
10
100
1000
IOUT (mA)
1/11
■PIN CONFIGURATION
NC
GND
*The dissipation pad for the USP-6B package should be
solder-plated in recommended mount pattern and metal
masking so as to enhance mounting strength and heat
release. If the pad needs to be connected to other pins. it
should be connected to the VDD pin.
1 EXT
FB 6
5
4
NC 5
2 VDD
3
CE/VIEW
1
2
3
FB
CE/Vref
VDD
SOT-25
(TOP VIEW)
■PIN ASSIGNMENT
PIN NUMBER
PIN
FUNCTION
NAME
SOT-25 USP-6B
1
2
6
2
FB
Output Resistor Connection
Supply Voltage
VDD
CE/
Serves as Both Chip Enable Pin
3
4
Vref and Reference Voltage Apply Pin.
4
5
-
3
1
5
GND
EXT
NC
Ground
External Transistor Connection
No Connection
■PRODUCT CLASSIFICATION
●Ordering Information
XC9106D①②③④⑤-⑥(*1) : PWM control
XC9107D①②③④⑤-⑥(*1) : PWM/PFM automatic switching control
DESIGNATOR
ITEM
SYMBOL
DESCRIPTION
Reference Voltage
(Apply External)
①②
00
Fixed
3
300kHz
③
Oscillation Frequency
1
100kHz
MR
SOT-25 (3,000/Reel)
SOT-25 (3,000/Reel)
USP-6B (3,000/Reel)
USP-6B (3,000/Reel)
MR-G
DR
Packages
④⑤-⑥
(Oder Unit)
DR-G
(*1)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.
2/11
XC9106/XC9107
Series
■BLOCK DIAGRAM
Current
Ripple Detect
and FB
Phase
VDD
FB
Compensation
PWM
Comparator
Buffer,
Driver
EXT
Error Amp.
Ramp Wave
Generator,
OSC
Vref with
Soft Start,
CE
PWM/PFM
Controller
GND
CE / Vref
FB, CE : CMOS INPUT
EXT : CMOS OUTPUT
Ta = 25OC
■ABSOLUTE MAXIMUM RATINGS
PARAMETER
VDD pin Voltage
FB Pin Voltage
SYMBOL
RATINGS
-0.3～12.0
-0.3～12.0
-0.3～12.0
-0.3～VDD+0.3
±100
UNITS
VDD
V
V
VFB
CE / Vref pin Voltage
EXT pin Voltage
EXT pin Current
VCE / Vref
VEXT
V
V
IEXT/
mA
SOT-25
USP-6B
150
Power Dissipation
Pd
mW
100
Operating Temperature Range
Storage Temperature Range
Topr
Tstg
-40～+85
-55～+125
OC
OC
3/11
■ELECTRICAL CHARACTERISTICS
XC9106D001MR, XC9107D001MR
(FOSC=100kHz)
Ta=25 OC
UNITS CIRCUIT
PARAMETER
Output Voltage
Reference
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
VOUT
Vref = 0.9V
8.820 9.000 9.180
V
V
①
Vref
VFB
0.8
-
2.5
-
Voltage Range
Vref = 0.8V
Vref = 0.9V
0.784 0.800 0.816
0.882 0.900 0.918
2.450 2.500 2.550
FB Control Voltage
V
④
Vref = 2.5V
Supply Voltage Range
(*1)
VDD as shown right and
(Vref applied voltage+0.7V)
Recommended Circuit using
2SD1628, IOUT=1.0mA
No external connections,
CE/Vref=0.9V, Voltage applied, FB=0V
Recommended circuit using
2SD1628, IOUT=1.0mA
Same as VST2, VDD=3.300V
Same as IDD1, FB=1.2V
Same as IDD1, CE/Vref=0V
Same as IDD1
VDD
VST1
VST2
VHLD
1.8
-
-
-
-
10.0
0.9
V
V
V
V
-
Operation Start Voltage
-
-
-
③
④
③
Oscillation
0.8
Start Voltage (*1)
Operation Hold Voltage
0.7
Supply Current 1
Supply Current 2
IDD1
IDD2
-
-
29
14
-
41
19
④
④
⑤
④
④
①
µA
µA
µA
kHz
%
Stand-by Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio
ISTB
-
1.0
115
87
FOSC
MAXDTY
PFMDTY
85
75
20
100
81
28
Same as IDD1
No Load (XC9106 series)
Recommended circuit using
XP161A1355
36
%
Efficiency
EFFI
-
85
-
%
①
Soft-start Time
CE “High” Voltage
CE “Low” Voltage
EXT “High”
TSS
VCEH
VCEL
Vref=0.9V
5.0
0.65
-
10.0
20.0
-
mS
V
①
⑤
⑤
Same as IDD1
-
-
Same as IDD1
0.20
V
REXTH
REXTL
ICEH
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
-
-
24
16
36
24
④
④
⑤
Ω
Ω
ON Resistance
EXT “Low”
ON Resistance
Same as IDD2, CE=0.8V
Same as IDD2, CE=2.5V
Same as IDD2, CE=0V
Same as IDD2, FB=VDD
Same as IDD2, FB=1.0V
-1.0
-
-
-
-
-
0.0
2.5
CE “High” Current
µA
0.0
CE “Low” Current
FB “High” Current
FB “Low” Current
ICEL
IFBH
IFBL
-
-
-
-0.1
0.1
⑤
⑤
⑤
µA
µA
µA
-0.1
Test Conditions: Unless otherwise stated, CL: Ceramic, recommended MOSFET should be connected.
VDD= 3.3V
VIN= 3.3V
→
Vref=
IOUT=
0.09V,
50mA
RFB1,2×10
→
NOTE:
*1: Although the IC starts step-up operations from a VDD of 0.8V, the output voltage and oscillation frequency are stabilized at
VDD ≧ 1.8V and (Vref applied voltage＋0.7V). Therefore, a VDD of more than 1.8V and (Vref applied voltage＋0.7V) is
recommended when VDD is supplied from VIN or other power sources.
4/11
XC9106/XC9107
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9106D003MR, XC9107D003MR
(FOSC=300kHz)
Ta=25 OC
PARAMETER
Output Voltage
Reference
SYMBOL
VOUT
CONDITIONS
Vref = 0.9V
MIN.
TYP.
MAX. UNITS CIRCUIT
8.820 9.000 9.180
V
①
-
Vref
VFB
0.8 2.5
-
V
Voltage Range
Vref = 0.8V
Vref = 0.9V
Vref = 2.5V
0.784 0.800 0.816
0.882 0.900 0.918
2.450 2.500 2.500
FB Control Voltage
V
④
-
Supply Voltage Range
(*1)
VDD as shown right and
(Vref applied voltage＋0.7V)
Recommended circuit using 2SD1628,
IOUT=1.0mA
No external connections
CE/Vref=0.9V, Voltage applied, FB=0V
Recommended circuit using 2SD1628,
IOUT=1.0mA
VDD
VST1
VST2
VHLD
1.8
-
-
-
-
10.0
0.9
V
V
V
V
③
Operation Start Voltage
-
-
-
Oscillation
Start Voltage (*1)
0.8
④
③
Operation Hold Voltage
0.7
Supply Current 1
Supply Current 2
Stand-by Current
Oscillation Frequency
Maximum Duty Ratio
PFM Duty Ratio
IDD1
IDD2
ISTB
FOSC
MAXDTY
PFMDTY
Same as VST2, VDD=3.3V
Same as IDD1, FB=1.2V
Same as IDD1, CE/Vref=0V
Same as IDD1
-
-
-
62
16
-
300
81
32
88
22
1.0
345
87
µA
µA
µA
kHz
%
④
④
⑤
④
④
①
①
255
75
24
Same as IDD1
No Load (XC9106 series)
Recommended circuit using
XP161A1355
40
%
Efficiency
EFFI
-
85
-
%
Soft-start Time
CE “High” Voltage
CE “Low” Voltage
EXT “High”
ON Resistance
EXT “Low”
TSS
VCEH
VCEL
Vref=0.9V
Same as IDD1
Same as IDD1
5.0
0.65
-
10.0
-
-
20.0
-
0.20
mS
V
V
①
⑤
⑤
④
REXTH
REXTL
ICEH
Same as IDD1, VEXT=VOUT-0.4V
Same as IDD1, VEXT=0.4V
-
-
24
16
36
24
Ω
Ω
④
ON Resistance
Same as IDD2, CE=0.8V
Same as IDD2, CE=2.5V
Same as IDD2, CE=0V
Same as IDD2, FB=VDD
Same as IDD2, FB=1.0V
-1.0
0.0
-
-
-
-
-
-
-
-
0.0
2.5
-0.1
0.1
CE “High” Current
µA
⑤
CE “Low” Current
FB “High” Current
FB “Low” Current
ICEL
IFBH
IFBL
µA
µA
µA
⑤
⑤
⑤
-0.1
Test Conditions: Unless otherwise stated, CL: Ceramic, recommended MOSFET should be connected.
VDD= 3.3V
VIN= 3.3V
→
→
Vref=
IOUT=
0.09V,
50mA
RFB1,2 × 10
NOTE :
*1: Although the IC starts step-up operations from a VDD of 0.8V, the output voltage and oscillation frequency are stabilized at
VDD ≧ 1.8V and (Vref applied voltage＋0.7V). Therefore, a VDD of more than 1.8V and (Vref applied voltage＋0.7V) is
recommended when VDD is supplied from VIN or other power sources.
■TYPICAL APPLICATION CIRCUIT
Rb
NchPower
MOSFET
Cb
Insert Rb and CB when using a
bipolar NPN Transistor.
When obtaining VDD from a source other than VOUT, please insert a capacitor CDD between the
VDD pin and the GND pin in order to provide stable operations.
Please wire CL & CIN between the VOUT/VDD pin and the GND pin. Strengthen the wiring
sufficiently. When using a capacitor other than ceramic or low ESR at CL, please take away
RSENSE and short.
5/11
■OPERATIONAL EXPLANATION
The XC9106 / 07 series are reference voltage (Vref) apply external step-up DC/DC controller ICs. Output voltage will be set
with external resistors (RFB1 and RFB2) and Vref value. The series make it easy to control output voltage externally and are
suited to software applications that need to vary voltage such as LCD power supply for PDA.
<Error Amp.>
Error amplifier is designed to monitor the output voltage, comparing the feedback voltage (FB) with the reference voltage
Vref. In response to feedback of a voltage lower than the reference voltage Vref, the output voltage of the error amp.
decreases.
<OSC Generator>
This circuit generates the internal reference clock.
<Ramp Wave Generator>
The ramp wave generator generates a saw-tooth waveform based on outputs from the OSC generator.
<PWM Comparator>
The PWM comparator compares outputs from the error amp. and saw-tooth waveform. When the voltage from the Error
amp's output is low, the external switch will be set to ON.
<PWM / PFM Controller>
This circuit generates PFM pulses.
The PWM/PFM automatic switching mode switches between PWM and PFM automatically depending on the load.
PWM/PFM control turns into PFM control when threshold voltage becomes lower than voltage of error amps. Noise is easily
reduced with PWM control since the switching frequency is fixed. Because of the function, control suited to the application
can easily be selected. The series suitable for noise sensitive portable audio equipment as PWM control can suppress noise
during operation and PWM/PFM switching control can reduce consumption current during light loads in stand-by.
<Vref 1 with Soft Start>
The reference voltage of the XC9106/9107 series is adjusted and fixed by external applied voltage. (For output voltage
settings, please refer to the output voltage setting.)
To protect against inrush current, when the power is switched on, and also to protect against voltage overshoot, soft-start time
is set internally to 10ms. It should be noted, however, that this circuit does not protect the load capacitor (CL) from inrush
current. With the Vref voltage limited, and depending upon the input to error amp, the operation maintains a balance between
the two inputs of error amps and controls the EXT pin's ON time so that it doesn't increase more than is necessary.
The XC9106/9107 series alters soft start times by the setting value of reference voltage in order to protect against voltage
overshoot and also to protect against inrush current. Please determine soft start time by the formula equation.
XC9106 / XC9107D xxx MR
TSS = 8.65×Vref + 2.21
30
[Example Computation]
Vref = 0.9V, TSS = 8.65×0.9 + 2.21 = 10.0 ms
25
20
15
10
5
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Reference Voltage Vref (V)
<Enable Function>
This function controls the operation and shutdown of the IC. When the voltage of the CE pin drops to 0.2V or less, disable
mode will be entered, the IC's operations will stop and the EXT pin will be kept at a low level (the external N-ch MOSFET will
be OFF). When the IC is in a state of chip disable, current consumption will be no more than 1.0µA.
When the CE pin's voltage rises to 0.65V or more, enable mode will be entered and operations will recommence. The CE pin
also doubles with reference voltage in the XC9106/9107 series, and the range of reference voltage can be varied externally
from 0.8V to 2.5V.
6/11
XC9106/XC9107
Series
■OPERATIONAL EXPLANATION (Continued)
<Output Voltage Setting>
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on
the values of RFB1 and RFB2. The sum of RFB1 and RFB2 should normally be 2MΩ or less. The range of reference voltage of
the series can be varied externally from 0.8V to 2.5V.
VOUT = Vref applied voltage×(RFB1 + RFB2) / RFB2
The value of CFB1, speed-up capacitor for phase compensation, should result in fzfb = 1/(2π×CFB×RFB1) equal to 5 to
30kHz. Adjustments are required depending on the application, value of inductance (L), and value of load capacity (CL).
fzfb = 30kHz (L=10µH)
fzfb = 20kHz (L=22µH)
fzfb = 10kHz (L=47µH)
RFB1 : 270kΩ
RFB2 : 30kΩ
CFB :
20pF
27pF
56pF
(fzfb = 30kHz, L = 10µH)
(fzfb = 20kHz, L = 22µH)
(fzfb = 10kHz, L = 47µH)
<The Use of Ceramic Capacitor CL>
The circuit of the XC9106/9107 series is organized by a specialized circuit, which reenacts negative feedback of both voltage
and current. Also by insertion of approximately 100mΩ of a low and inexpensive sense resistor as current sense, a high
degree of stability is possible even using a ceramic capacitor, a condition, which used to be difficult to achieve. Compared to a
tantalum condenser, because the series can be operated in a very small capacity, it is suited to use of the ceramic capacitor,
which is cheap and small.
■RECOMMENDED EXTERNAL COMPONENTS
Tr:
*When a MOSFET is used:
*When a NPN Tr. is used :
2SK2159 (N-ch Power MOSFET, NEC)
Note* : With direct voltages over 4.5V, use the
XP161A11A1PR.
2SD1628 (SANYO)
Rb : 500Ω (adjust with Tr's HFE or load)
Cb : 2200pF (ceramic type)
Cb ≦ 1 / (2π×Rb×FOSC×0.7)
SD:
MA2Q737 (Schottky Diode type, MATSUSHITA)
L, CL :
Adjust as below according to the condition and peripheral components
When Ceramic capacitor is used:
L :
22µH (CDRH5D28, SUMIDA, FOSC = 100kHz)
10µH (CDRH5D28, SUMIDA, FOSC = 300kHz)
CL :
10V, 10µF (Ceramic capacitor, LMK325BJ106ML, TAIYOYUDEN)
Use the formula below when step-up ratio and output current is large.
CL = (CL standard value)×(IOUT(mA) / 300mA×VOUT / VIN)
RSENSE :
100mΩ
50mΩ
(FOSC = 300kHz)
(FOSC = 100kHz)
When Tantalum capacitor is used:
L:
22µH (CDRH5D28, SUMIDA, FOSC = 300kHz)
47µH (CDRH5D28, SUMIDA, FOSC = 100kHz)
Except when IOUT(mA) / 100mA×VOUT / VIN＞2 → 22µH
16V, 47µF (Tantalum type 16MCE476MD2, NIPPONCHEMI)
Use the formula below when step-up ratio and output current is large.
CL = (CL standard value)×(IOUT(mA) / 300mA×VOUT / VIN)
Not required, but short out the wire.
CL:
RSENSE:
When AL Electrolytic capacitor is used:
L:
22µH (CDRH5D28, SUMIDA, FOSC = 300kHz)
47µH (CDRH5D28, SUMIDA, FOSC = 100kHz)
Except when IOUT(mA) / 100mA×VOUT / VIN＞2 → 22µH
CL:
16V, 100µF (AL electrolytic type)＋10V, 2.2µF (ceramic type)
Strengthen appropriately when step-up ratio and output current is large.
Not required, but short out the wire.
RSENSE:
CFB:
Set up so that fzfb = 100kHz.
7/11
■TEST CIRCUITS
Circuit ①
Circuit ④
RP
SD
R
SENSE
V
OUT
A
CP
L
OSC
CFB
A
R
FB1
EXT
CE
V
DD
CL
OSC
Tr
V
FB
V
IN
C
IN
EXT
CE
V
DD
GND
R
FB2
A
RL
C
DD
FB
GND
Circuit ②
Circuit ⑤
A
EXT
V
DD
SD
R
SENSE
A
CE
A
A
FB
L
OSC
GND
C
FB
A
CB
RFB1
RFB2
EXT
CE
V
DD
A
CL
Tr
V
FB
C
IN
RB
V
IN
GND
RL
Circuit ③
SD
R
SENSE
L
OSC
CB
RB
C
FB
A
RFB1
EXT
CE
V
DD
A
CL
Tr
V
FB
C
IN
V
IN
GND
RFB2
RL
8/11
XC9106/XC9107
Series
■PACKAGING INFORMATION
●SOT-25
●USP-6B
Unit : mm
Unit : mm
●USP-6B Reference Pattern Layout
●USP-6B Reference Metal Mask Design
9/11
■MARKING RULE
●SOT-25
①② represents product series
5
4
MARK
PRODUCT SERIES
①
6
②
①
②
③
④
XC9106D00xMx
XC9107D00xMx
D
D
7
1
2
3
SOT-25
(TOP VIEW)
③ represents oscillation frequency
MARK
OSCILLATION FREQUENCY
PRODUCT SERIES
1
3
100kHz
300kHz
XC9106/07D001Mx
XC9106/07D003Mx
④ represents production lot number
0 to 9,A to Z reverse character 0 to 9,A to Z repeated (G, I, J, O, Q, W excluded)
●USP-6B
①② represents product series
MARK
PRODUCT SERIES
①
U
L
②
D
XC9106D00xDx
XC9107D00xDx
D
USP-6B
(TOP VIEW)
③④ represents FB voltage
MARK
PRODUCT SERIES
③
④
0
0
0
XC9106D00xDx
XC9107D00xDx
0
⑤ represents oscillation frequency
MARK
OSCILLATION FREQUENCY
PRODUCT SERIES
1
3
100kHz
300kHz
XC9106/07D001Dx
XC9106/07D003Dx
⑥ represents production lot number
0 to 9,A to Z repeated (G, I, J, O, Q, W excluded).
Note: No character inversion used.
10/11
XC9106/XC9107
Series
1. The products and product specifications contained herein are subject to change without
notice to improve performance characteristics. Consult us, or our representatives
before use, to confirm that the information in this datasheet is up to date.
2. We assume no responsibility for any infringement of patents, patent rights, or other
rights arising from the use of any information and circuitry in this datasheet.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this datasheet.
4. The products in this datasheet are not developed, designed, or approved for use with
such equipment whose failure of malfunction can be reasonably expected to directly
endanger the life of, or cause significant injury to, the user.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this datasheet within the specified ranges.
Should you wish to use the products under conditions exceeding the specifications,
please consult us or our representatives.
6. We assume no responsibility for damage or loss due to abnormal use.
7. All rights reserved. No part of this datasheet may be copied or reproduced without the
prior permission of TOREX SEMICONDUCTOR LTD.
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