High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
July 3, 2003 Ver. 1
! Synchronous Step-up & down DC / DC Controller
! Input Voltage Range
2.0V ~ 10.0V
! Output Voltage Externally Set-up
! Oscillation Frequency
300 kHz (Accuracy ±15%)
! Maximum Duty Cycle
78%
(TYP.)
! PWM, PWM/PFM Swiching Control
! Syncronous Rectification Control
! High Efficiency
84%
(TYP.)
! Small MSOP-8 packaging
" APPLICATIONS
" GENERAL DESCRIPTION
" FEATURES
# PDAs
# Palmtop computers
# Portable Audio
# Various power supplies
The XC9303 series is highly efficient, synchronous PWM, PWM/PFM
switching step-up & down DC/DC controller ICs. A versatile, large
output current and high efficiency, step-up/down DC/DC controller
can be realized using only basic external components - transistors,
coil, diode, capacitors, and resistors for detecting voltages. High
efficiency is obtained through the use of a synchronous rectification
topology. The operation of the XC9303 series can be switched
between synchronous PWM and synchronous PWM/PFM (autoswitching) externally using PWM pin. In PWM/PFM mode the
XC9303 automatically switches from PWM to PFM during light loads
and high efficiencies can be achieved over a wide range of output
loads conditions. Output noise can be easily reduced with PWM
control since the frequency is fixed.
Input Voltage Range
: 2.0V ~ 10V
Output Voltage Range
: 2.0V ~ 6.0V
Can be set freely with 0.9V
(±2.0%) of reference voltage supply
and external components.
Oscillation Frequency
: 300kHz
Output Current
: More than 800mA
Stand-By Function
: 3.0µA (MAX.)
Package
: MSOP-8
Soft-start time
: 10 ms (internally set)
±15%
(VIN = 4.2V, VOUT=3.3V)
The XC9303 has a 0.9V (±2.0%) internal voltage supply and using
externally connected components, output voltage can be set freely
between 2.0V to 6.0V. With an internal 300kHz switching frequency
smaller external components can be used. Soft-start time is
internally set to 10msec and offers protection against in-rush currents
when the power is switched on and prevents voltage overshoot.
" TYPICAL APPLICATION CIRCUIT
" TYPICAL PERFORMANCE CHARACTERISTICS
$ Efficiency vs. Output Current
<XC9303B093K, VOUT:3.3V)
XC9303B093K(300kHz, VOUT=3.3V)
L:22uH
CDRH127/LD
Tr1:Pch MOSFET
:CPH6315
SD:CMS02
V OUT : 3. 3V
100
Tr2:Nch MOSFET
:CPH3409
90
V DD
PWM
CE
V IN :2.0V~10V
P WM
CE
EXT 2
Tr3:Nch MOSFET
:CPH3409
CFB
: 62pF
Efficiency EFFI (%)
CIN :47uF
EXT 1
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
RFB
:200 kΩ
CL:
47uF X 2
GND
FB
NC
RFB
:75 kΩ
80
70
60
50
VIN=2.7V
40
4.2V
30
PWM Control
20
10
0
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
1
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
" PIN CONFIGURATION
1 EXT1
EXT2 8
2 VDD
GND 7
3 PWM
FB 6
4 CE
NC 5
MSOP-8A
(TOP VIEW)
" PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTIONS
1
EXT 1 /
2
VDD
Supply Voltage
3
PWM
PWM/PFM Switching Pin <PWM control when connected to VDD, PWM / PFM auto switching when connected
to Ground. >
4
CE
Chip Enable Pin <Connected to Ground when output is stand-by mode. Connected to VDD when output is
active. EXT/1 is high and EXT2/ is low when in stand-by mode.>
5
NC
No Connection
6
FB
Output Voltage Monitor Feedback Pin <Threshold value : 0.9V. Output voltage can be set freely by connecting
split resistors between VOUT and Ground.>
7
GND
Ground
8
EXT2
External Transistor Drive Pin <Connected to Low side of Nch Power MOSFET Gate>
External Transistor Drive Pin <Connected to High Side of Pch Power MOSFET Gate>
" ORDERING INFORMATION
XC9303123456
DESIGNATOR
1
2
3
4
5
6
SYMBOL DESCRIPTION
B
0
9
Standard
3
Switching Frequency 300kHz
K
R
L
Package
MSOP-8A
Embossed Tape
Standard Feed
Reverse Feed
FB Voltage
0.9V
" PACKAGE INFORMATION
$ MSOP-8A
4.90 + 0.10
3.00 + 0.10
0.53 + 0.13
0.15 +0.08
-0.02
-
O
3.00 + 0.10
+0.11
0.86
-0.10
(0.65)
0.00 ~ 0.20
+0.08
-0.02
0.30
+0.20
1.02
-0.21
0~6
2
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
" BLOCK DIAGRAM
Synchronous
blanklogic
EXT1/
PWM
Comparator
Error Amp
FB
EXT2
+
+
-
PWM/PFM
Controller
-
PWM
VIN
CE
Vref=0.9V
withSoft Start,
CE
R amp Wave
Generator,
OSC
CE to
internal circuit
GND
" ABSOLUTE MAXIMUM RATINGS
Ta=25OC
PARAMETER
SYMBOL
RATINGS
UNITS
VDD Pin Voltage
VDD
- 0.3 ~ 12
V
FB Pin Voltage
VFB
- 0.3 ~ 12
V
CE Pin Voltage
VEN
- 0.3 ~ 12
V
PWM Pin Voltage
VPWM
- 0.3 ~ 12
V
MODE Pin Voltage
VEXT
- 0.3 ~ 12
V
EXT1, 2 Pin Voltage
VEXT
- 0.3 ~ VDD + 0.3
V
EXT1, 2 Pin Current
IEXT
±100
mA
Power Dissipation
Pd
150
mW
Operating Ambient Temperature
Topr
- 40 ~ + 85
O
C
- 55 ~ +125
O
C
Storage Temperature
Tstg
3
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
" ELECTRICAL CHARACTERISTICS
XC9303B093
PARAMETER
SYMBOL
CONDITIONS
(FOSC = 300kHz)
MIN.
TYP.
MAX.
Ta=25OC
TEST
UNITS CIRCUIT
Supply Voltage
VDD
MODE = 0V
2.0
-
10.0
V
1
Maximum Input Voltage
VIN
MODE = 0V
10.0
-
-
V
1
Output Voltage Range(note 1)
VOUTSET
2.0
-
6.0
V
1
Supply Current 1
IDD1
FB = 0V
-
90
170
µA
2
Supply Current 2
IDD2
FB = 1.0V
-
55
110
µA
2
VIN ≥ 2.0V, IOUT=1mA
Stand-by Current
ISTB
Same as IDD1, CE = 0V
Oscillation Frequency
FOSC
Same as IDD1
FB Voltage
VFB
VOUT
VIN=3.0V, IOUT=10mA
-
-
3.0
µA
2
255
300
345
kHz
2
0.882
0.900
0.918
V
3
Minimum Operation Voltage
VINmin
-
-
2.0
V
1
Maximum Duty Ratio
MAXDTY
Same as IDD1
72
78
88
%
2
Minimum Duty Ratio
MINDTY
Same as IDD2
-
-
0
%
2
PFM Duty Ratio
PFMDTY
No Load, VPWM=0V
22
30
38
%
4
Efficiency1 (note 2 )
EFFI
IOUT1=300mA (note 3)
-
84
-
%
4
VOUT × 0.95V, CE=0V→0.65V
Soft-Start Time
TSS
5.0
10.0
20.0
mS
4
EXT1 "High" ON Resistance
REXTBH1
CE1 = 0, EXT1= VDD - 0.4V
-
26
37
Ω
5
EXT1 "Low" ON Resistance
REXTBL1
FB = 0V, EXT1 = 0.4V
-
19
30
Ω
5
EXT2 "High" ON Resistance
REXTBH2
EXT2 = VDD - 0.4V
-
23
31
Ω
5
EXT2 "Low" ON Resistance
REXTBL2
CE = 0V, EXT2 = VDD - 0.4V
-
19
30
Ω
5
PWM "High" Voltage
VPWMH
No Load
0.65
-
-
V
4
PWM "Low" Voltage
VPWML
No Load
-
-
0.20
V
4
CE "High" Voltage
VCEH
FB = 0V
0.65
-
-
V
2
FB = 0V
CE "Low" Voltage
VCEL
CE "High" Current
ICEH
CE "Low" Current
ICEL
PWM "High" Current
IPWMH
PWM "Low" Current
IPWML
FB "High" Current
IFBH
CE = 0V
PWM=0V
FB "Low" Current
IFBL
FB = 1.0V
Unless otherwise stated, VDD = 3.0V, CE = 3.0V, PWM = 3.0V, FB = 3.0V, EXT1, 2=OPEN, VIN=2.7V
-
-
0.2
V
2
-
-
0.5
µA
2
-
-
- 0.5
µA
2
-
-
0.5
µA
2
-
-
- 0.5
µA
2
-
-
0.50
µA
2
- 0.50
µA
2
-
-
Notes 1) Please be careful not to exceed the breakdown voltage level of the peripheral parts.
2) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
3)
Tr1 : CPH6315
(SANYO)
Tr2 : CPH3409
(SANYO)
Tr3 : CPH3409
(SANYO)
SD : CMS02
(TOSHIBA)
L : 22µH
CL : 16V, 47µF x 2
CIN : 16V, 47µF
(SUMIDA CDRH127/LD)
(NICHICEMI Tantalum MCE Series)
(NICHICEMI Tantalum MCE Series)
RFB1 : 200kΩ
RFB2 : 75kΩ
CFB : 62pF
4
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
" OPERATIONAL DESCRIPTION
The XC9303 series are synchronous step-up & down DC/DC converter controller ICs with built-in high speed, low ON resistance drivers.
<Error Amp>
The Error Amplifier is designed to monitor the output voltage and it compares the feedback voltage (FB) with the reference voltage. In response to
feedback of a voltage lower than the reference voltage, the output voltage of the error amp. decreases.
<OSC Generator>
This circuit generates the oscillation frequency which in turn generates the source clock.
<Ramp Wave Generator>
The Ramp Wave Generator generates a saw-tooth waveform based on outputs from the Phase Shift 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.
Control can be switched between PWM control and PWM/PFM automatic switching control using external signals.
The PWM/PFM automatic switching mode is selected when the voltage of the PWM pin is less than 0.2V, and the control switches between PWM and
PFM automatically depending on the load. As the PFM circuit generates pulses based on outputs from the PWM comparator, shifting between modes
occurs smoothly. PWM control mode is selected when the voltage of the PWM pin is more than 0.65V. Noise is easily reduced with PWM control since
the switching frequency is fixed.
Control suited to the application can easily be selected which is useful in audio applications, for example, where traditionally, efficiencies have been
sacrificed during stand-by as a result of using PWM control (due to the noise problems associated with the PFM mode in stand-by).
<Synchronous, blank logic>
The synchronous, blank logic circuit is to prevent penetration of the transistor connected to EXT1 and EXT2.
<Vref with Soft Start>
The reference voltage, Vref (FB pin voltage)=0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please refer to page 8). 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 the error amps, the operation maintains a balance between the two inputs of the error amps and controls the EXT pin's ON time so that it doesn't
increase more than is necessary.
<Chip Enable Function>
This function controls the operation and shutdown of the IC. When the voltage of the CE pin is 0.2V or less, the mode will be chip disable, the channel's
operations will stop. The EXT1 pin will be kept at a highlevel (the external P-type MOSFET will be OFF) and the EXT2 pin will be kept at a lowlevel (the
external N-type MOSFET will be OFF). When CE pin is in a state of chip disable, current consumption will be no more than 3.0µA.
When the CE pin's voltage is 0.65V or more, the mode will be chip enable and operations will recommence. With soft-start, 95% of the set output
voltage will be reached within 10mS (TYP) from the moment of chip enable.
5
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
" HOW TO USE
<Setting of Output Voltage>
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on the values of
RFB11(RFB21) and RFB12(RFB22). The sum of RFB11(RFB21) and RFB12(RFB22) should normally be 1 MΩ or less.
VOUT = 0.9 × ( RFB11 + RFB12 ) / RFB12
The value of CFB1(CFB2), speed-up capacitor for phase compensation, should be fzfb= 1 / (2 × π × CFB1 × RFB11) which is equal to 12kHz.
Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and value of load capacity (CL).
When RFB11 = 200kΩ and RFB12 = 75kΩ, VOUT1 = 0.9 × ( 200K + 75k ) / 75k = 3.3V.
[Example of Calculation]
[Typical Example]
VOUT
(V)
RFB11
(kΩ)
RFB12
(kΩ)
CFB1
(pF)
VOUT
(V)
RFB11
(kΩ)
RFB12
(kΩ)
2.0
330
270
39
3.3
200
75
62
2.2
390
270
33
5.0
82
18
160
2.5
390
220
33
2.7
360
180
33
3.0
560
240
24
CFB1
(pF)
[External Components]
Tr 1 : CPH6315
(Pch MOSFET : SANYO),
IRLM6702 (Pch MOSFET : IR)
Tr 2 : CPH3409
(Nch MOSFET : SANYO),
IRLM1902 (Nch MOSFET : IR)
Tr 3 : CPH3409
(Nch MOSFET : SANYO),
IRLM2502 (Nch MOSFET : IR)
Note :
VGS Breakdown Voltage of CHPH6315 and CPH3409 is 10V so please be careful with the power supply voltage.
For the power supply voltage more than 8V, CPH3308 (Pch MOSFET : SANYO) or CPH3408 (Nch MOSFET :
SANYO) which breakdown voltage is 20V are recommended.
L:
22µH
(SUMIDA CDRH127 / LD)
CIN :
16V, 47µF
(NICHICEMI Tantalum MCE Series)
CL :
16V, 47µF x 2
(NICHICEMI Tantalum MCE Series)
SD :
CMS02
(TOSHIBA, Schottky Barrier Diode)
" EXTERNAL COMPONENTS
$ COIL
PART NUMBER
MANUFACTURER
L VALUE (µH)
CDRH127 / LD-220
SUMIDA
22
SERIAL
RATED CURRENT
(A)
RESISTANCE (Ω)
36.4 m
4.7
W x L (mm)
H (mm)
12.3 x 12.3
8
$ INPUT / OUTPUT CAPACITANCE
PART NUMBER
MANUFACTURER
VOLTAGE (V)
CAPACITANCE
(µF)
W x L (mm)
H (mm)
16MCE476MD2
NICHICHEMI
16.0
47
4.6 x 5.8
3.2±0.2
$ SCHOTTKY BARRIER DIODE
PART NUMBER
MANUFACTURER
REVERSE
CURRENT
FORWARD
CURRENT
Vfmax (V)
Irmax (A)
W x L (mm)
H (mm)
CMS02
TOSHIBA
30
3
0.4 (IF=3A)
0.5m (VR=30V)
2.4 x 4.7
0.98±0.1
$ TRANSISTOR (Pch MOSFET)
PART NUMBER
MANUFACTURER
CPH6315
CPH3308
IRLMS6702
SANYO
SANYO
IR
ABSOLUTE MAX. RATINGS
VDSS (V) VGSS (V)
ID (A)
±10
- 20
-3
±20
- 30
-4
±12
- 20
- 2.3
Rds (ON)
MAX.(mΩ)
Cisss typ (pF)
VGS (off) (V)
PKG.
150 (VDS= - 4.0V)
140 (VDS= - 4.0V)
200 (VDS= - 4.5V)
410 (VDC= - 10V)
560 (VDC= - 10V)
210 (VDC= - 15V)
- 1.4 (MAX.)
- 2.4 (MAX.)
- 0.7 (MAX.)
CPH6
CPH3
Micro6
Rds (ON)
MAX.(mΩ)
Cisss typ (pF)
VGS (off) (V)
PKG.
42 (VDS=4.0V)
68 (VDS=4.0V)
630 (VDC= 10V)
480 (VDC= 10V)
1.3 (MAX.)
2.4 (MAX.)
CPH6
CPH3
$ TRANSISTOR (Nch MOSFET)
PART NUMBER
MANUFACTURER
CPH3409
CHP3408
SANYO
SANYO
ABSOLUTE MAX. RATINGS
VDSS (V) VGSS (V)
ID (A)
±10
30
5
±20
30
5
6
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
" TEST CIRCUITS
Circuit 1
Circuit 2
SBD
L
PNP
Tr1
VOUT
Tr2:Nch MOSFET
2200pF
510Ω
EXT1
SBD
A
CIN
RFB1
Tr3 :NchMOSFET
EXT1
A
EXT2
V DD
CIN
CFB
FB
CE
NC
A
V
GND
PWM
V DD
OSC
RL
CL
A
EXT2
GND
PWM
FB
CE
NC
A
OSC
A
1µF
VDD
RFB2
V P WM
VCE
VFB
VIN
Circuit 3
Circuit 4
L
SBD
Tr1:Pch MOSFET
L
Tr1:Pch MOSFET
V OUT
Tr2:Nch MOSFET
SBD
SBD
A
CIN
A
CIN
Tr3:NchMOSFET
EXT1
A
Tr3:NchMOSFET
EXT2
GND
PWM
FB
CE
NC
CL
EXT1
A
V
VDD
CIN
SBD
V OUT
Tr2:Nch MOSFET
VDD
RL
CIN
OSC
VIN
VP WM
V IN
EXT2
62 pF
GND
PWM
FB
CE
NC
200k Ω
V
CL
RL
75kΩ
VCE
Circuit 5
EXT1
VDD
Rp
OS C
VEX T1
1µ F
VD
EXT2
GND
PWM
FB
CE
NC
Rp
OSC
VCE
VE X T2
D
VP WM
VFB
Circuit 1 :
L:
22µH (SUMIDA CDRH127 / LD)
SD:
CMS02 (TOSHIBA, Schottky Barriar Diode)
CL:
16MCE476MD2 (NIHONCHEMICON, Tantalum Type)
CIN:
16MCE476MD2 (NIHONCHEMICON, Tantalum Type)
PNP Tr 1 : 2SA1213 (TOSHIBA)
Tr 2 :
CPH3409 (SANYO)
Tr 3 :
CPH3409 (SANYO)
RFB :
Please use by the conditions as below.
RFB1 + RFB2 ≤1MΩ
RFB1 / RFB2 = (Setting Output Voltage / 0.9) -1
CFB :
fztb = 1 / (2 x π x CFB x RFB1) =1kHz ~ 50kHz (12kHz usual)
Circuit 3 :
Circuit 4 :
L:
22µH (SUMIDA CDRH127 / LD)
L:
SD:
CMS02 (TOSHIBA, Schottky Barriar Diode)
SD:
CMS02 (TOSHIBA, Schottky Barriar Diode)
CL:
16MCE476MD2 (NIHONCHEMICON, Tantalum Type)
CL:
16MCE476MD2 (NIHONCHEMICON, Tantalum Type)
CIN:
16MCE476MD2 (NIHONCHEMICON, Tantalum Type)
CIN:
16MCE476MD2 (NIHONCHEMICON, Tantalum Type)
Tr 1 :
CPH6315 (SANYO)
Tr 1 :
CPH6315 (SANYO)
Tr 2 :
CPH3409 (SANYO)
Tr 2 :
CPH3409 (SANYO)
Tr 3 :
CPH3409 (SANYO)
Tr 3 :
CPH3409 (SANYO)
7
22µH (SUMIDA CDRH127 / LD)
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
" NOTES ON USE
1. PWM/PFM Automatic Switching
If PWM/PFM automatic switching control is selected and the step-down ratio is high (e.g., from 10 V to 1.0 V), the control mode remains in PFM setting
over the whole load range, since the duty ratio under continuous-duty condition is smaller than the PFM duty ratio of the XC9303 series. The output
voltage's ripple voltage becomes substantially high under heavy load conditions, with the XC9303 series appearing to be producing an abnormal
oscillation. If this operation becomes a concern, set pins PWM1 and PWM2 to High to set the control mode to PWM setting.
2. Ratings
Use the XC9303 series and peripheral components within the limits of their ratings.
3. Notes on How to Select Transistor
Synchronous rectification operation prepares fixed time when switching changes so that the high side PchMOSFET and the low side NchMOSFET do
not oscillate simultaneously. Also it is designed to prevent the penetratation current when the both MOSFET oscillate at the same time. However, some
MOSFET may oscillate simultaneously and worsen efficiency. Please select MOSFET with high Vth with small input capacity on high side PchMOSFET
and the low side NchMOSFET. (When using with large current, please note that there is a tendency for ON resistance to become large when the input
capacity of MOSFET is small and Vth is high.)
<The check method of whether selected MOSFET is oscillating simultaneously>
In order to check that MOSFET is not oscillating simultaneously, please observe Lx terminal waveform of coil current at the time of the continuation
mode. If the MOSFET parasitism diode waveform on Lx terminal waveform can be formed in the period EXT 1 is 'H' and EXT2 is 'L', it can be thought
that MOSFETs are not oscillating simultaneously.
CH1 : EXT1
CH2 : EXT2
Diode Wave Form
CH3 : Lx
" TYPICAL APPLICATION CIRCUIT
Tr1:Pch
SD
Lx P i n
MOSFET
Tr2:Nch
V OUT
MOSFET
Tr3:Nch
CIN
MOSFET
CFB
EXT1
EXT2
VDD
GND
RF B 1
CL
P WM
CE
PWM
CE
FB
NC
RF B 2
VIN
8
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
FOSC=300kHz, VOUT=5.0V
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
5.2
PWM/PFM Switching Control
PWM Control
3.4
4.2V 5.0V
Efficiency EFFI (%)
Output Voltage VOUT (V)
3.5
3.3
3.2
VIN=2.7V
3.3V
3.1
PWM/PFM Switching Control
PWM Control
5.1
5
4.9
VIN=3.0V
4.2V
6.0V
4.8
4.7
3.0
0.1
1
10
100
1000
0.1
10000
1
10
100
1000
10000
Output Current IOUT (mA)
Output Current IOUT (mA)
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
Output Voltage VOUT (V)
3.5
PWM/PFM Switching Control
PWM Control
3.4
4.2V
3.3
3.2
VIN=2.7V
3.1
3.0
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
9
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
(2) Efficiency vs. Output Current
FOSC=300kHz, VOUT=3.3V
FOSC=300kHz, VOUT=5.0V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
90
80
70
60
50
40
30
20
10
0
PWM/PFM Switching Control
PWM Control
5.0V
VIN=2.7V
0.1
1
10
100
3.3V
1000
Efficiency EFFI (%)
Efficiency EFFI (%)
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
4.2V
100
90
80
70
60
50
40
30
20
10
0
PWM/PFM Switching Control
PWM Control
4.2V
0.1
10000
6.0V
VIN=3.0V
1
10
100
1000
10000
Output Current IOUT (mA)
Output Current IOUT (mA)
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
Efficiency EFFI (%)
100
90
PWM/PFM Switching Control
PWM Control
80
70
60
50
40
4.2V
VIN=2.7V
30
20
10
0
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
10
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
(3) Ripple Voltage vs. Output Current
FOSC=300kHz, VOUT=3.3V
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
100
100
PWM/PFM Switching Control
PWM Control
VIN=2.7V
3.3V
4.2V
5.0V
60
80
Ripple Voltage (mV)
Ripple Voltage (mV)
80
40
VIN=2.7V
3.3V
4.2V
5.0V
60
40
20
20
0
0
0.1
1
10
100
1000
0.1
10000
1
FOSC=300kHz, VOUT=5.0V
1000
10000
FOSC=300kHz, VOUT=5.0V
100
100
PWM Control
80
PWM/PFM Switching Control
Ripple Voltage (mV)
Ripple Voltage (mV)
100
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:CPH6315, Tr2:CPH3409, Tr3:CPH3409
VIN=3.0V
4.2V
6.0V
60
40
20
80
VIN=3.0V
4.2V
6.0V
60
40
20
0
0
0.1
1
10
100
1000
10000
0.1
1
Output Current IOUT (mA)
10
100
1000
10000
Output Current IOUT (mA)
FOSC=300kHz, VOUT=3.3V
FOSC=300kHz, VOUT=3.3V
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
L=22uH(CDRH127/LD), CL=94uF(Tantalum),SD:CMS02
Tr1:IRLMS6702, Tr2:IRLMS1902, Tr3:IRLML2502
100
100
PWM Control
4.2V
PWM/PFM Switching Control
80
60
Ripple Voltage (mV)
Ripple Voltage (mV)
10
Output Current IOUT (mA)
Output Current IOUT (mA)
VIN=2.7V
40
20
0
4.2V
80
VIN=2.7V
60
40
20
0
0.1
1
10
100
1000
0.1
10000
1
10
100
1000
10000
Output Current I OUT (mA)
Output Current IOUT (mA)
Semiconductor Ltd.
11
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
(4) Supply Current 1 vs. Supply Voltage
(5) Supply Current 2 vs. Supply Voltage
XC9303B093 (300kHz)
XC9303B093 (300kHz)
Supply Current 2 IDD2 (uA)
Supply Current 1 IDD1
(uA)
600
Topr=85OC
25OC
- 40OC
500
400
300
200
100
0
0
2
4
6
8
300
200
150
100
50
0
10
Supply Voltage VDD (V)
Topr=85OC
25OC
- 40OC
250
0
(6) Stand-by Current vs. Supply Voltage
XC9303B093 (300kHz)
25
Softstart Time TSS (msec)
Stand-by Current ISTB (uA)
10
O
Topr=85 C
25OC
- 40OC
6
4
2
20
15
10
5
0
0
0
2
4
6
8
Supply Voltage VDD (V)
0
10
(8) CE 'H' 'L' Voltage vs. Supply Voltage
PWM 'H' 'L' Voltage V PWM (V)
CE 'H' 'L' Voltage VCE (V)
-40OC
0.4
O
Topr=25O
0.2
85 C
0
0
10
XC9303B093 (300kHz)
0.8
0.6
2
4
6
8
Supply Voltge VDD (V)
(9) PWM 'H' 'L' Voltage vs. Supply Voltage
XC9303B093 (300kHz)
2
4
6
8
Supply Voltage VDD (V)
0.8
0.6
-40OC
0.4
85OC
Topr=25O
0.2
0
10
0
(10) Maximum Duty Ratio vs. Supply Voltage
2
4
6
8
Supply Voltage VDD (V)
10
(11) Oscillation Frequency vs. Supply Voltage
XC9303B093 (300kHz)
XC9303B093 (300kHz)
90
360
Oscillation Frequency Fosc
(kHz)
MAX. Duty Ratio Maxdty
(%)
10
(7) Softstart Time vs. Supply Voltage
XC9303B093 (300kHz)
8
2
4
6
8
Supply Voltage VDD (V)
Topr=85OC
25OC
- 40OC
85
80
330
85OC
300
75
Topr=25O
270
70
65
-40OC
240
0
2
4
6
8
10
0
Supply Voltage VDD (V)
12
2
4
6
8
Supply Voltage VDD (V)
10
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
(12) EXT 1 High ON Resistance vs. Supply Voltage
(13) EXT1 Low ON Resistance vs. Supply Voltage
XC9303B093 (300kHz)
EXT1 'L' ON Resistance
XC9303B093 (300kHz)
EXT1 'H' ON Resisitance
80
EXT1 L ON Resistance
(Ω)
EXT1 H ON
Resistance(Ω)
80
Topr=85OC
25OC
- 40OC
60
40
20
Topr=85OC
25OC
- 40OC
60
40
20
0
0
0
2
4
6
8
Supply Voltage VDD (V)
10
0
(14) EXT2 High ON Resistance vs. Supply Voltage
XC9303B093 (300kHz)
EXT2 'L' ON Resistance
EXT2 L ON Resistance
(Ω)
80
EXT2 H ON
Resistance(Ω)
O
Topr=85 C
25OC
- 40OC
40
20
80
40
20
0
0
2
4
6
8
Supply Voltage VDD (V)
0
10
(16) Output Voltage vs. Ambient Temperature 1
XC9303B093(300kHz)
10
XC9303B093(300kHz)
Output Voltage VOUT (V)
Output Voltage VOUT (V)
2
4
6
8
Supply Voltage VDD (V)
(17) Output Voltage vs. Ambient Temperature 2
L=22uH(CDRH127/LD), CL=94uF(Tantalum)
Tr1:CPH6315, Tr2:CPH3409,Tr3:CPH3409
VIN=5.0V
IOUT=200mA
3.4
Topr=85OC
25OC
- 40OC
60
0
3.5
10
(15) EXT2 Low ON Resistance vs. Supply Voltage
XC9303B093 (300kHz)
EXT2 'H' ON Resistance
60
2
4
6
8
Supply Voltage VDD (V)
3.3
3.2
3.1
1.1
L=22uH(CDRH127/LD), CL=94uF(Tantalum)
Tr1:CPH6315, Tr2:CPH3409,Tr3:CPH3409
VIN=3.3V
IOUT=200mA
1.0
0.9
0.8
0.7
0.6
3.0
-50
-20
10
40
70
Ambient Temperature Ta ( OC)
-50
100
-20
10
40
70
Ambient Temperature Ta ( OC)
100
(18) PFM Duty Ratio vs. Supply Voltage
XC9303B093(300kHz)
PFM Duty Ratio (%)
40
35
30
Topr=85OC
25OC
- 40OC
25
20
0
2
4
6
8
Supply Voltage VDD (V)
10
13
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
LOAD TRANSIENT RESPONSE
< VOUT1, 2 = 3.3 V, VIN = 5.0V
IOUT1, 2 = 100µA Q 100mA >
Synchronous PWM Control
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100µA D 100mA
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100mA D 100µA
3.3V
CH1
CH1
3.3V
100mA
100mA
CH2
100µA
CH2
10msec/div
100µA
200µsec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 50mA/div
CH1:VOUT, AC-COUPLED,100mV/div
CH2:IOUT, 50mA/div
Synchronous PWM/PFM Switching Control
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100µA D 100mA
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100mA D 100µA
3.3V
CH1
CH1
3.3V
100mA
100mA
CH2
CH2
100µA
100µA
200µsec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 50mA/div
10msec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 50mA/div
14
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
< VOUT1, 2 = 3.3 V, VIN = 5.0V
IOUT1, 2 = 100µA Q 300mA >
Synchronous PWM Control
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100µA D 300mA
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=300mA D 100µA
CH1
3.3V
CH1
3.3V
300mA
300mA
CH2
CH2
100µA
100µA
200µsec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 150mA/div
10msec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 150mA/div
Synchronous PWM/PFM Switching Control
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=100µA D 300mA
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT=300mA D 100µA
CH1
3.3V
3.3V
CH1
300mA
300mA
CH2
CH2
100µA
100µA
200µsec/div
10msec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 150mA/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 150mA/div
Semiconductor Ltd.
15
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
< VOUT1, 2 = 3.3 V, VIN = 2.7V
IOUT1, 2 = 100µA Q 100mA >
Synchronous PWM Control
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100µA D 100mA
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100mA D 100µA
3.3V
CH1
CH1
3.3V
100mA
CH2
100mA
CH2
100µA
10msec/div
100µA
200µsec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 50mA/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 50mA/div
Synchronous PWM/PFM Switching Control
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100µA D 100mA
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100mA D 100µA
3.3V
CH1
CH1
3.3V
100mA
300mA
CH2
CH2
100µA
10msec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 50mA/div
100µA
200µsec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 50mA/div
16
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
< VOUT1, 2 = 3.3 V, VIN = 2.7V
IOUT1, 2 = 100µA Q 300mA >
Synchronous PWM Control
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=100µA D 300mA
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT=300mA D 100µA
3.3V
CH1
3.3V
CH1
300mA
300mA
CH2
CH2
100µA
10msec/div
CH1:VOUT, AC-COUPLED,100mV/div
CH2:IOUT, 150mA/div
100µA
200µsec/div
CH1:VOUT, AC-COUPLED, 100mV/div
CH2:IOUT, 150mA/div
Synchronous PWM/PFM Switching Control
FOSC=300kHz, VOUT=2.7V
VIN=2.7V, IOUT=100µA D 300mA
FOSC=300kHz, VOUT=2.7V
VIN=2.7V, IOUT=300mA D 100µA
3.3V
CH1
CH1
3.3V
300mA
300mA
CH2
100µA
100µA
CH2
10msec/div
200µsec/div
CH1:VOUT, AC-COUPLED, 20mV/div
CH2:IOUT, 150mA/div
CH1:VOUT, AC-COUPLED, 20mV/div
CH2:IOUT, 150mA/div
17
Semiconductor Ltd.
High Efficiency, Synchronous
Step-Up & Down DC / DC Controller ICs
XC9303 Series
< PWM Control
Q PWM / PFM Switching Control >
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT =1mA PWM 'H' D 'L'
FOSC=300kHz, VOUT=3.3V
VIN=5.0V, IOUT =1mA PWM 'L' D 'H'
3.3V
3.3V
CH1
CH1
0.65V
0.65V
0V
CH2
CH2
0V
1msec/div
1msec/div
CH1:VOUT, AC-COUPLED, 20mV/div
CH2:PWM, 0.3V/div
CH1:VOUT, AC-COUPLED, 20mV/div
CH2:PWM, 0.3V/div
< Softstart Wave Form >
FOSC=300kHz, VOUT=3.3V
VIN=2.7V, IOUT =300mA CE 'L' D 'H'
CIN = 47µF
FOSC=300kHz, VOUT=3.3V
VIN=4.2V, IOUT =300mA CE 'L' D 'H'
CIN = 47µF
3.3V
3.3V
CH1
CH1
230mA
410mA
CH2
CH2
0.65V
0.65V
CH3
CH3
10ms/div
CH1:VOUT, DC-COUPLED, 2.0V/div
CH2:IIN, 200mA/div
CH3:CE, 0.5V/div
10ms/div
CH1:VOUT, DC-COUPLED, 2.0V/div
CH2:IIN, 100mA/div
CH3:CE, 0.5V/div
18
Semiconductor Ltd.