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APW7095/A
6-Channel DC/DC Converter Control IC
Features
* * *
Supports for synchronous rectification (CH1, CH2 and CH5) Supports for down or up-down Zeta conversions (CH1 and APW7095 CH2) Supports for up, flyback or up-down SEPIC conversions (APW7095A CH2, CH3, APW7095 CH4, CH5 and CH6)
General Description
The APW7095/A is a 6-channel, frequency-settable, voltage-mode, DC/DC control IC providing a complete power supply solution for high-performance portable digital cameras. The APW7095/A uses pulse-widthmodulation (PWM) and synchronous rectification for high efficiency step-up, step-down, up-down and inverting converters with free input and output settings in 2 or 4-cell AA, 1-cell lithium-ion (Li+), and dualbattery designs. The APW7095/A incorporates error amplifiers, output short-circuit detection, under-voltage lockout, soft-start and output switch control into a chip. The AP7095/A improves performance, component count, and size compared to conventional multichannel controllers. The APW7095/A has a power-good indicator (PGOOD) that signals when CH1 output is within 10% of the set voltage by monitoring IN1 pin. The APW7095/A is available in compact 48-pin plastic LQFP and TQFN packages.
* * *
Supports for Inverting conversion (APW7095A CH4) Low Start-up Voltage : 1.4V (CH6) Power Supply Voltage Range - CH1 to CH5 : 3.0V to 6.5V - CH6 : 2.4V to 6.5V
* * * * * * *
1% Reference Voltage Accuracy Wide Operating Frequency 100kHz to 1MHz Soft-Start Function (CH1 to 6) Power Good (PGOOD) Indicator for CH1 Low Shutdown Current Output Short-Circuit Detections Lead Free Available (RoHS Compliant)
Applications
* * *
Digital Camera Camcorder Hand-held Instrument
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005 1 www.anpec.com.tw
APW7095/A
Ordering and Marking Information
APW7095/A
Lead Free Code Handling Code Temp. Range Package Code Package Code QD : LQFP-48 QB : TQFN-48 Operating Ambient Temp. Range E : -30 to 85 C Handling Code TY : Tray Lead Free Code L : Lead Free Device Blank : Original Device XXXXX - Date Code
APW7095 QD/QB : APW7095A QD/QB :
APW7095 XXXXX APW7095A XXXXX
XXXXX - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering operations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C for MSL classification at lead-free peak reflow temperature.
Pinouts
48 47 46 45 44 43 42 41 40 39 38 OUT1-2 37 OUT1-1
OUT5-1
OUT2-2
PGOOD
OUT5-2
OUT2-1
OUT4
OUT6
PGND
PVCC
OUT3
1 2 3 4 5 6 7 8 9 10 11 12
SWOUT SWIN FB6 IN6 CIN6 DTC5 FB5 IN5 INA4 OUTA4 FB4 IN4 DTC4 CTL1,2 CSCP VREF CTL3 CTL4 CTL5
DTC1 FB1 IN1 DTC2 FB2 IN2
36 35 34 33 32 31 30 29 28 27 26 25
IC CH1 CH2 CH3 CH4 CH5 CH6
APW7095 Synchronous Step-down Synchronous Up-down Step-up Step-up Synchronous Step-up Step-up
APW7095A Synchronous Step-down Synchronous Step-up Step-up Inverting Synchronous Step-up Step-up
APW7095/A
DTC3 FB3 IN3 VB CT RT
INS4
GND
VCC 19
13
14
15
CS
16
17
18
20
CTL
21
22
23
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APW7095/A
Pin Description
PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Name SWOUT SWIN FB6 IN6 CIN6 DTC5 FB5 IN5 INA4 OUTA4 FB4 IN4 INS4 DTC4 CS VREF GND CSCP VCC CTL I/O O I O I I I O I I O O I I I O P P I DESCRIPTION Output Switch Control Circuit Output Pin. Output Switch Control Circuit Input Pin. CH6 Error Amplifier Output Pin. CH6 Inverted Input Pin of Error Amplifier. CH6 Soft-Start Capacitor Connection Pin. Leave this pin "Open" to disable the soft-start function. CH5 Dead Time Control Pin. Connect this pin to VREF directly when the dead-time control is not used. CH5 Error Amplifier Output Pin. CH5 Inverted Input Pin of Error Amplifier. CH4 Inverting Amplifier Input Pin. CH4 Inverting Amplifier Output Pin. Connect this pin to INA4 when the inverting amplifier is not used. CH4 Error Amplifier Output Pin. CH4 Inverted Input Pin of Error Amplifier. CH4 Inverted Input Pin of Short Detection Comparator. CH4 Dead Time Control Pin. Connect this pin to VREF directly when the dead-time control is not used. CH1 to CH5 Soft-Start Capacitor Connection Pin. Leave this pin "Open" to disable the soft-start function. Reference Voltage Output Pin. Reference Voltage and Control Circuit Ground Pin. Short-Circuit Detection Capacitor Connection Pin. Connect this pin to GND with the shortest distance to disable the timer-latch short-circuit protection circuit. Reference Voltage and Control Circuit Power Supply Pin. Power Supply and CH6 Control Pin. "H" Level: Operation Mode. "L" Level: Standby Mode CH1 and CH2 Control Pin. "H" Level: Operation Mode. "L" Level: OFF Mode CH3 Control Pin. "H" Level: Operation Mode. "L" Level: OFF Mode CH4 Control Pin. "H" Level: Operation Mode. "L" Level: OFF Mode CH5 Control Pin. "H" Level: Operation Mode. "L" Level: OFF Mode
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21
CTL1,2
I
22
CTL3
I
23
CTL4
I
24
CTL5
I
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005
APW7095/A
Pin Description (Cont.)
PIN No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Name RT CT VB IN3 FB3 DTC3 IN2 FB2 DTC2 IN1 FB1 DTC1 OUT1-1 OUT1-2 OUT2-1 OUT2-2 OUT3 PVCC OUT4 PGND OUT5-1 OUT5-2 OUT6 PGOOD I/O O I O I I O I I O I O O O O O P O P O O O O DESCRIPTION Oscillator Frequency Setting Resistor Connection Pin. Oscillator Frequency Setting Capacitor Connection Pin. Triangular Wave Oscillator Regulator Output Pin. CH3 Inverted Input Pin of Error Amplifier. CH3 Error Amplifier Output Pin. CH3 Dead Time Control Pin. Connect this pin to VREF directly when the dead-time control is not used. CH2 Inverted Input Pin of Error Amplifier. CH2 Error Amplifier Output Pin. CH2 Dead Time Control Pin. Connect this pin to VREF directly when the dead-time control is not used. CH1 Inverted Input Pin of Error Amplifier. CH1 Error Amplifier Output Pin. CH1 Dead Time Control Pin. Connect this pin to VREF directly when the dead-time control is not used. CH1 Main-side MOSFET Drive Pin. Connect OUT1-1 to the main MOSFET. CH1 MOSFET Drive Pin for Synchronous Rectifier. CH2 Main-side MOSFET Drive Pin. APW7095: Drive a p-channel MOSFET for a step-down converter. APW7095A: Drive an n-channel MOSFET for a step-up converter. CH2 MOSFET Drive Pin for Synchronous Rectifier CH3 MOSFET Drive Pin. Drive Circuit Power Supply Pin. CH4 MOSFET Drive Pin. APW7095: Drive an n-channel MOSFET for a step-up converter. APW7095A: Drive a p-channel MOSFET for a inverting step-up/down converter. Drive Circuit Ground Pin. CH5 Main-side MOSFET Drive Pin. Connect OUT5-1 to the main MOSFET. CH5 MOSFET Drive Pin for Synchronous Rectifier. CH6 MOSFET Drive Pin. Indicator Output Pin. This pin is an open-drain output used to indicate status of the CH1 output voltage.
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005
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APW7095/A
Block Diagram
PVCC
Driver 1-1
FB1
Error Amp.
FB1 DTC1 CT2 CTL1,2
IN1
1.25V
CH1 PWM Controller
OUT1-1
Driver 1-2
OUT1-2
SCP Comp. 1.25V x1.1 IN1 1.0V
PGOOD
Comp.
DTC1
1.25V x0.9 Driver 2-1
FB2
Error
FB2 DTC2 CT1 CTL1,2 1.25V SCP Comp.
Drive
IN2
Amp.
CH2 PWM Controller
1-1 2-1
OUT2-1
Driver 2-2
Drive 1-2
OUT2-2
1.0V
DTC2 FB3
Error Amp. FB3 DTC3 CT2 CTL3 1.25V SCP Comp. Driver 3
IN3
CH3 PWM Controller
OUT3
1.0V
DTC3 INA4
INV Amp.
OUTA4 FB4
Error FB4 DTC4 CT1 CTL4 1.25V Driver 4
IN4
Amp.
CH4 PWM Controller
OUT4
SCP
INS4
1.0V
Comp.
DTC4 FB5
Error Amp. FB5
Driver 5-1
OUT5-1
DTC5 CT2 CTL5 1.25V SCP Comp.
IN5
CH5 PWM Controller
Driver 5-2
OUT5-2
1.0V
DTC5 FB6
VB:2V Driver 6
IN6
Error Amp. FB6
37.5k 62.5k
CH6 PWM Controller
(Max. Duty=80%)
OUT6
CT
CIN6
SCP Control
Soft-Start
0.9V
Power Comp.
0.9V
UVLO
SCP Comp.
SWOUT CTL1,2 CTL3 CTL4 CTL5 CS CTL Logic
0.8V 0.3V 1.8V 1.1V 1.8V 1.1V Ref OSC 2V SCP 2.49V CT CT2 CT1 UVLO
PGND SWIN VCC
Power ON/OFF CTL
CTL
CS
VB
RT
CT
CSCP
VREF
GND
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005
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APW7095/A
Absolute Maximum Ratings
Symbol VCC VPVCC Parameter VCC Supply Voltage (VCC to GND) PVCC Supply Voltage (PVCC to GND) IN1~6, INA4, INS4, DTC1~5 Input Voltages CTL, CTL1~5, SWIN Input Voltages PGOOD Pull High Voltage Maximum Junction Temperature TSTG TSDR Storage Temperature Maximum Soldering Temperature, 10 Seconds Rating -0.3 ~ 7 -0.3 ~ 7 -0.3 ~ VCC+0.3 -0.3 ~ 7 -0.3 ~ 7 150 -65 ~ 150 300 Unit V V V V V
o
C C C
o o
Thermal Characteristics
Symbol JA Parameter Junction-to-Ambient Resistance in free air 48-pin Plastic QFP QFN Value 80 Unit
o
C/W
Recommended Operating Conditions
Symbol VCC VCC IREF IB VIN VCTL IO FOSC CT RT CS CCIN6 CSCP CVB TA Parameter Start-up Power Supply Voltage Operating Voltage Reference Voltage Output Current VB Output Current Input Voltage Control Voltage Output Current Oscillator Frequency Timing Capacitor Timing Resistor Soft-Start Capacitor Short Detection Capacitor VB Pin Capacitor Operating Ambient Temperature
6
Condition CH6 CH6 CH1 to CH5 VREF Pin VB Pin IN1 to IN5, INA4, INS4 Pins IN6 Pin CTL Pin OUT Pin (CH1 to CH5) OUT Pin (CH6) SWOUT Pin
CH1 to CH5 CH6
APW7095/A Min. Typ. Max. 6.5 1.4 2.4 5.0 6.5 3.0 5.0 6.5 -1 0 0 -0.5 0 VCC 0 VCC 0 6.5 2 15 2 15 1 4 100 500 1000 47 100 560 8.2 18 100 0.02 1.0 7 0.47 1.0 0.1 1.0 0.08 0.1 2 -30 25 85
Unit V V mA mA V V mA kHz pF k F F F
o
C
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005
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APW7095/A
Electrical Characteristics
Refer to the typical application circuit. These specifications apply over, VCC = 5V and TA = -30 to 85C, unless otherwise specified. Typical values refer to TA = 25C.
Symbol
Parameter
Test Condition CTL = 0V CTL = 0V CTL, CTL1 to CTL5 = 5V Rising VCC Falling VCC Rising VCC IREF = 0mA TA = -30C to 85C VCC = 3.0V to 6.5V IREF = 0mA to -1mA VREF = 2V
ICCS VCC Standby Current IPVCC PVCC Standby Current ICC VCC Nominal Supply Current Under Voltage Lockout VTH Threshold Voltage CH1 to VH Hysteresis Width CH5 VRST Reset Voltage CH6 Threshold Voltage VTH Reference Voltage VREF Reference Voltage Output Voltage Temperature VREF/ Stability VREF Line Input Stability Load Load Stability IOS Short-Circuit Output Current Soft-Start Input Standby Voltage VSTB Soft-Start Charge Current ICS Short-Circuit Detection VTH Threshold Voltage VSTB Input Standby Voltage Input Latch Voltage VI ICSCP Input Source Current Triangular Wave Oscillator Oscillator Frequency fOSC f/fdv Frequency Stability for Voltage Frequency Stability for f/fdt Temperature Error Amplifier (CH1 to CH5) VTH Threshold Voltage VT/ VT Temperature Stability VT IB Input Bias Current AV Voltage Gain Frequency Bandwidth BW Maximum Output Voltage VOH Minimum Output Voltage VOL ISOURCE Output Source Current ISINK Output Sink Current
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005
Min. 2.5 1.2 1.25 2.46 -10 -10 -25 -1.4 0.65 -1.4
APW7095/A Typ. Max. 10 10 1.8 5 2.7 0.2 1.3 1.4 2.49 0.5 -18 50 -1.0 0.70 50 50 -1.0 500 1 1 1.25 0.5 100 1.0 4.99 3 -25 16 2.9 1.4 1.55 2.51 10 10 -1 100 -0.6 0.75 100 100 -0.6 550 10 1.27 50 -10 -
Unit A mA
V
V % mV mV mA mV A V mV mV A kHz % % V % nA dB MHz V mV mA mA
CT=100pF, RT=18k,VB=2V VCC = 3V to 6.5V TA = -30C to 85C FB = 1.45V TA = -30C to 85C IN = 0V (CH1 to CH5) DC AV = 0dB
450 1.23 -50 60 4.9 5
FB = 1.45V FB = 1.45V
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APW7095/A
Electrical Characteristics (Cont.)
Refer to the typical application circuit. These specifications apply over, VCC=5V and TA= -30 to 85C, unless otherwise specified. Typical values refer to TA =25C.
Symbol
Parameter
Test Condition
APW7095/A Min. Typ. Max. 1.24 -50 60 4.9 60 -10 -50 60 4.9 5 0.97 -50 -50 0.8 1.0 -50 0.2 70 100 1.26 0.5 75 1.0 4.99 3 -50 120 0 100 1.0 4.99 3 -26 16 1.00 0.9 1.1 1.8 0.3 0.74 80 -130 160 18 10 1.28 50 -10 10 50 -1.0 1.03 1.0 1.9 0.84 90 -80 30 20
Unit
Error Amplifier (CH6) VTH Threshold Voltage VTH/ VTH Temperature Stability VTH IB Input Bias Current AV Voltage Gain Frequency Bandwidth BW VOH Maximum Output Voltage Minimum Output Voltage VOL ISOURCE Output Source Current Output Sink Current ISINK Inverted Amplifier (CH4) VIO Input Offset Voltage Input Bias Current IB Voltage Gain AV BW Frequency Bandwidth Maximum Output Voltage VOH Minimum Output Voltage VOL ISOURCE Output Source Current ISINK Output Sink Current Short Detect Comparator (CH1 to CH5) Threshold Voltage VTH IB Input Bias Current
FB = 0.55V TA = -30C to 85C IN6 = 0V DC AV = 0dB
V % nA dB MHz V mV mA A mV nA dB MHz V mV mA mA V nA
FB = 0.55V FB = 0.55V OUT = 1.25V IN = 0V DC AV = 0dB
OUT = 1.25V OUT = 1.25V CH1 to CH5 IN = 0V (CH1 to CH3, CH5) INS4 = 0V (CH4)
Short Detect Comparator (CH6) VTH Threshold Voltage PWM Comparator (CH1 to CH5) Duty = 0% VT0 Threshold Voltage VT100 Duty = 100% IDTC Input Current DTC = 0.4V (CH1 to CH5) PWM Comparator (CH6) Duty = 0% VT0 Threshold Voltage Duty = Max. VTmax Dtr Maximum Duty Cycle CT = 100pF, RT = 18k PWM Controller Driver for P-MOS (CH1, CH2, CH5) ISOURCE Output Source Current Duty 5%, OUT = 0V ISINK Output Sink Current Duty 5%, OUT = 5V OUT = -15mA ROH Output ON Resistance OUT = 15mA ROL
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005 8
V
V nA
V %
mA
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APW7095/A
Electrical Characteristics (Cont.)
Refer to the typical application circuit. These specifications apply over, VCC=5V and TA= -30 to 85C, unless otherwise specified. Typical values refer to TA =25C.
Symbol
Parameter
Test Condition
APW7095/A Typ. Max. Min. 100 300 1.2 0 1.5 0 -130 160 18 10 -290 470 7 4 2.5 -7 19 325 85 110 94 2 0.17 2.6 -80 30 20 -180 15 10 6.5 0.5 20 400 150 0.8 6.5 0.5 20
Unit
PWM Controller Driver for N-MOS (CH1, CH2, CH5, CH6) ISOURCE Output Source Current Duty 5%, OUT = 0V ISINK Output Sink Current Duty 5%, OUT = 5V ROH OUT = -15mA Output ON Resistance ROL OUT = 15mA PWM Controller Driver for P-MOS (CH3, CH4) ISOURCE Output Source Current Duty 5%, OUT = 0V ISINK Output Sink Current Duty 5%, OUT = 5V ROH OUT = -15mA Output ON Resistance ROL OUT = 15mA Output Switch Control (SW) VIH SWOUT = "L" level SW Input Voltage VIL SWOUT = "H" level SWIN = 5V ISWIN Input Current ISOURCE Output Source Current SWOUT = 0V Output Sink Current ISINK SWOUT = 5V ROH OUT = -4mA Output ON Resistance ROL OUT = 4mA Power Good Rising IN1 VTH IN1 Upper Threshold Voltage VTH Rising IN1 IN1 Lower Threshold Voltage Upper/Lower Hysteresis VPGOOD PGOOD Output Voltage Control Block (CTL, CT1 to CT5) VIH CTL Input Voltage VIL Input Current ICTL IPGOOD = 4mA Active Mode Standby Mode CTL = 5V
mA
mA
V A mA mA
% % % V
V A
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APW7095/A
Typical Characteristics
Power Supply Current vs. Power Supply Voltage
5
VCC=5V
Reference Voltage Current vs. Power Supply Voltage
5
IREF=0mA TA=25C CTL=CTL1,2=CTL3=CTL4=CTL5=5V
Power Supply Current, ICC(mA)
Reference Voltage, VREF(V)
4 3 2 1 0 0
4 3 2 1 0
TA=25C CTL=CTL1,2=CTL3=CTL4=CTL5=5V
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
Power Supply Voltage, VCC(V)
Power Supply Voltage, VCC(V)
Reference Voltage vs. Ambient Temperature
2.56
VCC=5V TA=25C CTL=CTL1,2=CTL3=CTL4=CTL5=5V IREF=0mA
Reference Voltage vs. Control Voltage
5
VCC=5V TA=25C IREF=0mA
Reference Voltage, VREF(V)
2.54 2.52 2.50 2.48 2.46 2.44
Reference Voltage, VREF(V)
100
4 3 2 1 0
-40
-20
0
20
40
60
80
0
Ambient Temperature, TA(C)
1 2 3 4 Control Voltage, VCTL(V)
5
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APW7095/A
Typical Characteristics (Cont.)
Control Current vs. Control Voltage Upper & Lower Threshold Voltage, VCT(V)
5
VCC=5V
Triangular Wave Upper & Lower Threshold Voltages vs. Oscillator Frequency
1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 200 400 600 800 1000 1200
Lower VCC=5V TA=25C RT=18k Upper
Control Current, ICTL(A)
4 3 2 1 0 0
TA=25C
VTL, CTL1,2~CTL5
1
2
3
4
5
6
7
8
Control Voltage, VCTL(V)
Oscillator Frequency, fosc(kHz)
Oscillator Frequency vs. Timing Capacitor
10000
Oscillator Frequency vs. Timing Resistor
10000
Oscillator Frequency, fosc(kHz)
VCC=5V TA=25C
Oscillator Frequency, fosc(kHz)
VCC=5V TA=25C
1000
RT=4.3k
1000
CT=47pF
100
RT=18k RT=100k
100
CT=1000pF CT=470pF
CT=100pF CT=220pF
10 10 100 1000 10000
10 1 10 100 1000
Timing Capacitor, CT(pF)
Timing Resistor, RT(k)
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APW7095/A
Typical Characteristics (Cont.)
Oscillator Frequency vs. Ambient Temperature Upper & Lower Threshold Voltage, VCT(V) Oscillator Frequency, fosc(kHz)
560 540 520 500 480 460 440 -40 -20 0 20 40 60 80 100
VCC=5V CTL=CTL1,2=CTL3=CTL4=CTL5=5V RT=18k CT=100pF
Triangular Wave Upper & Lower Threshold Voltages vs. Ambient Temperature
1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 -40 -20 0 20 40 60 80 100
Lower VCC=5V RT=18k CT=100pF Upper
Ambient Temperature, TA (C)
Ambient Temperature, TA (C)
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APW7095/A
Typical Applications
vvv
1.VBAT=2.7V~6V (4-Cell Battery or 1-Cell LI-ION) for 2 Buck and 4 Boost Converter (Using APW7095)
VBAT C28 22uF
APW7095
APM2301A OUT1-1 Q1
VBAT
7.5V/20mA
D7 SS12 R31 75k Q11
L6 22uH
C1 22uF L1 22uH D1 SS0520
1.8V/300mA
C27 22uF
APM2300A OUT4 INA4 C26 0.1uF Driver CH4 Boost Controller CH1 Buck Controller Driver OUT1-2 FB1 IN1 R29 1K OUTA4 FB4 IN4 INS4 VREF DTC4 VBAT R26 24K R25 47K C25 22uF 1.25V Vref 1.25V Vref DTC1 PGOOD 47K APM2301A OUT2-1 Q3 L2 22uH 10uF Q8 OUT5-1 APM2300A APM2300A C5 C3 0.1uF
C2 100uF R1 6.8K R2
APM2300A R28 15k
Q2 R3 1K
R4 VREF 24K R5 VBAT
15K
R27 0
C4 22uF
L5 22uH 5V/300mA APM2301A D6 SS12
L3 22uH D2 SS12
3.3V/300mA
Q10 C24 22uF C23 22uF R24 300K Q9
OUT5-2 C22 0.1uF
Driver
APM2301A R22 1K
CH5 Boost Controller
CH2 Buck Controller
Driver
OUT2-2 FB2 IN2 C7
Q4 R8 1K
R6 24K R7
C6 100uF
FB5 IN5 1.25V Vref
0.1uF
R23 100K
VREF
DTC5
1.25V Vref
DTC2
R9 VREF 18K 5V R10 47K T1 SS12 D3
15K
R21 24K VBAT R20 47K L4 22uH 5V APM2301A C19 22uF Q7 C20 22uF R19 100K D5 SS12 R18 309K Q6 OUT6 Driver CH6 Boost Controller CH3 Boost Controller Driver APM2300A OUT3 FB3 IN3 DTC3 1.25V Vref CTL CTL1,2 VCC PVCC SWIN VB CSCP PGND VREF CS RT CT C16 0.1uF GND CTL3 CTL4 CTL5 C12 0.1uF C21 22uF C8 22uF
-10V/20mA C9 22uF 15V/20mA
D4
SS12 C11 C10 22uF R11 165K R12 R14 VREF 15K
APM2312 R17 1K C17 0.33uF C18 0.1uF
Q5 R13 1K
4700PF
FB6 IN6 CIN6 1.26V Vref SWOUT
18K R15 47K
C15 0.1uF
R16 30K
C14 100PF
C13 0.22uF
VREF
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APW7095/A
Typical Applications (Cont.)
2.VBAT=1.4V~3V (2-Cell Battery) for 1 Buck , 1 Inverting and 4 Boost Converter s (Using APW7095A)
VBAT C28 Q11 APM2301A -7.5V/20mA D7 OUT1-1 C27 22uF SS12 R31 60k R30 10k R29 1K C26 0.1uF INA4 FB1 IN1 R28 10k OUTA4 FB4 IN4 INS4 V R E F DTC4 VBAT R26 24K R25 47K C25 22uF 1.25V Vref L2 22uH C4 22uF D2 SS12 DTC1 1.25V Vref PGOOD 47K 0.1uF L5 22uH OUT4 Driver CH4 Inverting Controller CH1 Buck Controller Q1 22uF 3.3V ( from CH5 )
APW7095A
APM2301A C1 22uF L1 22uH D1 SS0520 C2 100uF R1 6.8K R2 R4 VREF 24K R5 VBAT 15K 1.8V/300mA
APM2300A
Driver
OUT1-2 C3
Q2 R3 1K
R27 0
L4 22uH 3.3V/300mA APM2301A D6 SS12
4V/300mA C5 1uF C6 100uF
OUT2-1 Q8 OUT5-1
Q4
APM2300A Q10 C24 22uF C23 22uF R24 24K Q9 APM2300A OUT5-2 R22 1K R23 15K VREF DTC5 1.25V Vref 1.25V Vref DTC2 C22 0.1uF Driver CH5 Boost Controller CH2 Boost Controller Q3 Driver OUT2-2 APM2301A C7 FB2 IN2 R8 1K R9 V R E F 18K R10 47K 5V SS0520 D3 C8 22uF L6 22uH SS0520 D4 C11 1uF R6
APM2301A FB5 IN5
33K R7 15K
0.1uF
R21 24K VBAT R20 47K L3 22uH 5V APM2301A C19 22uF Q7 C20 22uF R19 100K D5 SS12 R18 309K R17 1K C17 0.33uF SWOUT VCC PVCC SWIN CSCP PGND VREF CS VB GND RT CT C18 FB6 0.1uF IN6 CIN6 1.26V Vref 1.25V Vref DTC3 CTL CTL1,2 CTL3 CTL4 CTL5 Q6 OUT6 CH6 Boost Controller CH3 Boost Controller Driver OUT3 FB3 IN3 C12 0.1uF APM2300A C21 22uF
D8
3.3V
18V/3mA C9 22uF 15V/20mA
SS12 C10 22uF R11 165K R12
APM2312
Driver
Q5 R13 1K R14 18K R15 47K VREF
15K
C16 0.1uF
C15 0.1uF
R16 30K
C14 100PF
C13 0.22uF
VREF
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APW7095/A
Function Descriptions
General The APW7095/A provides voltage-mode feedback controls for six DC/DC PWM converters(CH1 to CH6). Each channel operates with an error amplifier, PWM comparator, short-circuit comparator, ON/OFF control and output driver. An internal temperature-compensated voltage provides reference voltages for each channel. An triangular-wave oscillator(CT) with a timing resistor and capacitor generates triangular waves to each channel. A inverting amplifier(CH4) cooperates with the error amplifier for an inverting converter (with negative output voltage) . Reference Voltage The APW7095 outputs a temperature- compensated reference voltage(2.49V) at VREF pin. It is regulated from the voltage at VCC pin and can source current of max. 1mA to external loads. It also supplies bias for the IC' internal circuitry. s Triangular-wave Oscillator The triangular-wave oscillator is designed to generates a triangular oscillation signal (CT) with amplitude of 0.3V~0.8V at CT pin, providing signal to CH6. The oscillator frequency is settable from 100kHz to 1MHz and set by a timing resistor and a timing capacitor connected respectively from RT and CT pins to ground. Additional two triangular oscillation signals (CT1 and CT2) are also internally generated with amplitude of 1. 1V~1.8V. The CT1 is in phase with the CT to the PWM comparators of CH2 and CH4; the CT2 is out of phase with the CT to the PWM comparators of CH1, CH3 and CH5. Error Amplifier The error amplifier is designed with unit-gain-bandwidth of 1MHz and to satisfy wide application requirements. It works with enternal resistor-capacitor network for each converter' feedback compensation. The loop gain s can be set by connecting a feedback resistor and
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005 15
capacitor from the output pin(FB) to inverted input pin of the error amplifier for stable operations. Inverting Amplifier (Inv Amp) The inverting amplifier detects the inverting DC/DC converter output voltage (as a negative voltage) and outputs a control signal to the error amp. Channel Control Function The channel control function turns on/off one or more channels depending on the states ("H" or "L" level) at CTL, CTL1,2 to CTL5 pins. The on/off control logic is shown as the following table:
Channel on/off Setting Tabl e
Vol tage Level at CTL Pin CTL CTL1,2 CTL3 CTL4 CTL5 L x x L H L L H H H L L H H L H H x L x L H L H L H L H L H L H L H L H Channel ON/OFF State Power CH1 CH3 CH4 CH6 /CH6 /CH2 OFF(Standby State) OFF OFF ON OFF OFF ON ON OFF OFF OFF ON ON OFF ON ON ON OFF OFF ON OFF OFF ON ON ON OFF OFF ON ON OFF ON ON
MOSFET Drive Circuits APW7095/A uses push-pull configuration at output of each MOSFET driver for providing large drive current to MOSFET gate. The following table shows the MOSFETs connected to the drivers:
IC CH1 CH2 CH3 CH4 CH5 CH6 APW7095 OUT1-1 : PMOS OUT1-2 : NMOS OUT2-1 : PMOS OUT2-2 : NMOS OUT3 : NMOS OUT4 : NMOS OUT5-1 : NMOS OUT5-2 : PMOS OUT6 : NMOS APW7095A OUT1-1 : PMOS OUT1-2 : NMOS OUT2-1 : NMOS OUT2-2 : PMOS OUT3 : NMOS OUT4 : PMOS OUT5-1 : NMOS OUT5-2 : PMOS OUT6 : NMOS
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APW7095/A
Function Descriptions (Cont.)
Timer-latch short-circuit protection circuit The short-circuit protection comparator in each channel (CH1 to CH5) monitors converter' output voltage s via input pin of error amplifier. In CH6, the short-circuit comparator detects the voltage at output of error amplifier. As any detected voltages of CH1 to CH5 falls below 1.0V or the detected voltage of CH6 is larger than 0.9V, the timer circuits is actuated to start charging the external capacitor CSCP connected from CSCP pin to ground. When the rising voltage of CSCP reaches 0.7V, the IC turns off all external MOSFETs and pulls up the voltage at SWOUT pin. Then the IC is latched. Applying a signal from "L" to "H" to CTL pin enables operation again. The short-circuit detection function remains working during soft start operation on CH1 to CH5. Under-Voltage Lockout (UVLO) Circuit The under-voltage lockout circuit monitors the supply voltage at VCC pin to prevent wrong logic control. The IC starts operation after the supply voltage rises above it' rising threshold. As the supply voltage falls below s it' falling threshold, the IC turns off the external s MOSFETs and pulls up the voltage at SWOUT pin. Soft-Start Operation The soft-start function controls the output voltage rate of rise to limit the current surge at start-up. For CH1 to CH5, the soft-start interval is programmed by the soft-start capacitor, CS connected from CS pin to ground and charged by an internal 1A current source. For CH6, a soucing current from the internal resistordivider charges the capacitor, CCIN6 connected from CIN6 pin to ground, providing soft-start control. Figure 1 and 2 show the soft-start processes. In figure 1, when all control pins (CTL, CTL1,2 to CTL 5) are driven high ("H" level) at the same time, the voltage at CIN6 pin starts to rise up by charging the capacitor CCIN6 , starting a soft-start operation on CH6. After the
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005 16
rising voltage at CIN6 reaches 0.9V, the reference voltage starts to regulate and the internal source current starts to charge the CS , starting a soft-start operation on CH1 to CH5. During soft-start interval, the error amplifiers compares the CH1 to CH5 output voltage to the voltage at the CS pin. When any control pins (CH1, 2 to CH5) go "H" from "L" during the soft-start interval (CH1 to CH5), the output rises rapidly to follow the rising voltage at CS pin.
Input CTL CTL1,2 CTL3 CTL4 CTL5
Output 2V VB 0.9V CIN6 CH6 Output Voltage (Vo6) 2.49V VREF 1.25V
CS CH1 to CH5 Output Voltages (Vo1 to Vo5)
t (1) (3) (2) (4)
(1) to (2) : CH6 Soft-Start Interval (3) : VREF Output start (3) to (4) : CH1 to CH5 Soft-Start Interval
Figure 1 Soft-start waveforms
Input CTL CTL1,2 CTL3 CTL4 CTL5 Output 2V VB 0.9V CIN6 CH6 Output Voltage (Vo6) 2.49V VREF 1.25V 1.25V
CS CH1 to CH3 Output Voltages (Vo1 to Vo3) CH4 to CH5 Output Voltages (Vo4 to Vo5) (1) (3) (2) (4)
(5) (6)' (7)'
(6)
(7)
t
(1) to (2) : CH6 soft-start interval (3) : VREF Output start (4) to (5) : CH1 to CH3 soft-start Interval (6) to (7) : CH4, CH5 soft-start Interval (6)' to (7)' : CH4(CH5) soft start interval as CTL4 (CTL5) go "H" from "L" during CH1 to CH3 soft start interval
Figure 2 Soft-start waveforms
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APW7095/A
Function Descriptions (Cont.)
Output Switch Control Circuit The output switch control circuit outputs a signal to control external p-channel MOSFETs for preventing reactive current flow to external step-up circuits on CH5 and CH6. When a "H" level signal is applied to SWIN pin after releasing the UVLO and the voltage at CIN6 pin rises above 0.9V(typical), the IC pulls low the voltage at SWOUT pin, turning on the external p-channel MOSFETs to generate output voltages.
f OSC (kHz) 900000 RT (k ) CT (pF)
Output Voltage Settings The output voltage is set by the external resistor-divider connected with converter output, error amplifier input, and ground. (1) CH1 to CH3, CH5
R1 Vo (V) = 1.25V 1 + R2
VO Error Amp. 1
R1
IN1
Application Information
Soft-Start Interval Settings The CH6 soft-start time depends on the capacitor CCIN6 and is determined as the following equation:
CCIN6 (F) 37.5 (k ) 62.5 (k ) VCIN6 (V) ts (S) = ln1 - 100 (k ) 1.26 (V)
VB(2V) V CIN6
R2 1.25V
(2) CH4
Vo (V) = - 1.25V
VO R1 INV Amp. 4
R1 R2
INA4
R2
Error Amp. 6
OUTA4 R3 IN4 Error Amp. 4
CIN6
37.5k 62.5k
CCIN6
1.25V
(3) CH6 The soft-start time until CH6 output voltage reaches 95% of the set voltage is determined as the following equation: ts (S) 0.07 C CIN6 ( F) On CH1 to CH5, the soft-start time depending on the capacitor CS determined as the following equation :
R1 Vo (V) = 1.26V 1 + R2
VO VB(2V) R1 IN6 37.5k R2 CIN6 62.5k Error Amp. 6
ts (S) 1.25 C S ( F)
Triangular Oscillator Frequency Setting The triangular oscillator frequency set by the timing capacitor (CT) connected to the CT pin and the timing resistor (RT) connected to the RT pin determined as the following equation:
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005 17
Time Constant Setting for Timer-Latch Short-Circuit Protection Circuit The time constant for timer-latch short-circuit protection is set by the capacitor CSCP and determined as the following equation :
tPE (S) = 0.70 C SCP ( F)
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APW7095/A
Application Information (Cont.)
Dead-Time Setting The dead-time control pin (DTC) is designed to set the maximum ON duty of the main-side MOSFET. When the device is set for step-up inverted output based on the step-up or step-up/down Zeta method or flyback method, the FB pin voltage may reach and exceed the triangular wave voltage due to load fluctuation. If this is the case, the output MOSFET is fixed to a ON duty of 100 %. To prevent this, set the maximum duty of the output MOSFET. Connecting a resistor- divider between VREF, DTC and GND pins provides a voltage VDTC to DTC pin. When the the voltage at the DTC pin is higher than the triangular wave voltage (CT1/ 2), the output transistor is turned on. The maximum duty is calculated as the following equation:
ON Duty (max) = VDTC (V) = VDTC - 1.1 V 100 (%) 0.7 V
R2 VREF R1 + R2
VREF R1 VDTC R2 DTC1
where VREF is the output of the reference voltage (2. 49V typical) at VREF pin. The amplitude of the triangular waves CT1 and CT2 are typically 0.7V from 1. 1V to 1.8V.
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005
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APW7095/A
Package Information
LQFP-48
A
A2
C b E DETAIL "E" e
A1
L L1
48
37
1 36
Hd
25 12 "E" 13 He 24
Dim A A1 A2 b c D E e Hd He L L1 y
Millimeters Min. 0.050 1.4000.05 0.200TYP 0.127TYP 7.0000.100 7.0000.100 0.500TYP 9.0000.250 9.0000.250 0.6000.150 1.000REF 0 0.100 7 0.0236 Max. 1.600 0.150 Min. 0.0020
Inches Max. 0.0630 0.0059 0.05510.0020 0.0078TYP 0.0050TYP 0.27560.0039 0.27560.0039 0.0196TYP 0.35430.0098 0.35430.0098 0.006 0.0393REF 0 0.0039 7
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Jul., 2005
19
D
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APW7095/A
Package Information
TQFN-48
D
48 1 2 47 46 45 44 43 42 41 40 39 38 37 36 35
D2
47 48
L
1 2
3
34
4
33
5
32
E6
7 8 9 10
31
E2
30 29 28 27
11 12 13 14 15 16 17 18 19 20 21 22 23 24
26 25
e b
A2
A A3 A1
Dim A A1 A2 A3 b D D2 E E2 e L
Millimeters Min. 0.80 0 0 0.20REF 0.18 7BSC 4.15 7BSC 4.15 0.50BSC 0.30 0.50 0.01 5.25 0.09 5.25 0.09 0.30 0.007 Max. 1.00 0.05 1.00 Min. 0.03 0 0
Inches Max. 0.04 0.002 0.04 0.008REF 0.01 0.28BSC 0.21 0.28BSC 0.21 0.02BSC 0.01
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APW7095/A
Physical Specifications
Terminal Material Lead Solderability Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
Reflow Condition
TP
(IR/Convection or VPR Reflow)
tp Critical Zone T L to T P
Ramp-up
Temperature
TL Tsmax
tL
Tsmin Ramp-down ts Preheat
25
t 25 C to Peak
Time
Classification Reflow Profiles
Profile Feature Average ramp-up rate (TL to TP) Preheat - Temperature Min (Tsmin) - Temperature Max (Tsmax) - Time (min to max) (ts) Time maintained above: - Temperature (TL) - Time (tL) Peak/Classificatioon Temperature (Tp) Time within 5C of actual Peak Temperature (tp) Ramp-down Rate Sn-Pb Eutectic Assembly 3C/second max. 100C 150C 60-120 seconds 183C 60-150 seconds See table 1 10-30 seconds Pb-Free Assembly 3C/second max. 150C 200C 60-180 seconds 217C 60-150 seconds See table 2 20-40 seconds
6C/second max. 6C/second max. 6 minutes max. 8 minutes max. Time 25C to Peak Temperature Notes: All temperatures refer to topside of the package .Measured on the body surface. (mm)
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APW7095/A
Classification Reflow Profiles(Cont.)
Table 1. SnPb Entectic Process - Package Peak Reflow Temperature s 3 3 Package Thickness Volume mm Volume mm <350 350 <2.5 mm 240 +0/-5C 225 +0/-5C 2.5 mm 225 +0/-5C 225 +0/-5C
Table 2. Pb-free Process - Package Classification Reflow Temperatures 3 3 3 Package Thickness Volume mm Volume mm Volume mm <350 350-2000 >2000 <1.6 mm 260 +0C* 260 +0C* 260 +0C* 1.6 mm - 2.5 mm 260 +0C* 250 +0C* 245 +0C* 2.5 mm 250 +0C* 245 +0C* 245 +0C* *Tolerance: The device manufacturer/supplier shall assure process compatibility up to and including the stated classification temperature (this means Peak reflow temperature +0C. For example 260C+0C) at the rated MSL level.
Reliability Test Program
Test item SOLDERABILITY HOLT PCT TST ESD Latch-Up Method MIL-STD-883D-2003 MIL-STD-883D-1005.7 JESD-22-B,A102 MIL-STD-883D-1011.9 MIL-STD-883D-3015.7 JESD 78 Description 245C, 5 SEC 1000 Hrs Bias @125C 168 Hrs, 100%RH, 121C -65C~150C, 200 Cycles VHBM > 2KV, VMM > 200V 10ms, 1tr > 100mA
7X7mm Shipping Tray
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APW7095/A
7X7mm Shipping Tray (Cont.)
Customer Service
Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369
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