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IR3507のメーカーはInternational Rectifierです、この部品の機能は「XPHASE3TM PHASE IC」です。 |
部品番号 | IR3507 |
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部品説明 | XPHASE3TM PHASE IC | ||
メーカ | International Rectifier | ||
ロゴ | |||
このページの下部にプレビューとIR3507ダウンロード(pdfファイル)リンクがあります。 Total 19 pages
IR3507
DATA SHEET
XPHASE3TM PHASE IC
DESCRIPTION
The IR3507 Phase IC combined with an IR XPhase3TM Control IC provides a full featured and flexible way to
implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC provides
overall system control and interfaces with any number of “Phase” ICs which each drive and monitor a single
phase of a multiphase converter. The XPhase3TM architecture results in a power supply that is smaller, less
expensive, and easier to design while providing higher efficiency than conventional approaches.
FEATURES IR3507 PHASE IC
• Power State Indicator (PSI) interface provides the capability to maximize the efficiency at light loads.
• 7V/2A gate drivers (4A GATEL sink current)
• Converter output voltage up to 5.1 V (Limited to VCCL-1.4V)
• Loss-less inductor current sensing
• Feed-forward voltage mode control
• Integrated boot-strap synchronous PFET
• Only four external components per phase
• 3 wire analog bus connects Control and Phase ICs (VID, Error Amp, IOUT)
• 3 wire digital bus for accurate daisy-chain phase timing control without external components
• Anti-bias circuitry prevents excessive sag in output voltage during PSI de-assertion
• PSI input is ignored during power up
• Debugging function isolates phase IC from the converter
• Self-calibration of PWM ramp, current sense amplifier, and current share amplifier
• Single-wire bidirectional average current sharing
• Small thermally enhanced 20L 4 X 4mm MLPQ package
• RoHS compliant
APPLICATION CIRCUIT
www.DataSheet4U.com
12V
EAIN
IOUT
PSI
DACIN
PHSIN
PHSOUT
CLKIN
VCCL
Page 1 of 19
1 IOUT
2 PSI
3 DACIN
4 LGND
5 PHSIN
IR3507
SW
GATEH
BOOST
VCCL
NC
15
14
13
12
11
CBST
CVCCL
Figure 1 Application Circuit
RCS
CCS
L
VOUT+
COUT
VOUT-
Jan 09, 2008
1 Page IR3507
RECOMMENDED OPERATING CONDITIONS FOR RELIABLE OPERATION WITH MARGIN
8.0V VCC 28V, 4.75V VCCL 7.5V, 0 oC TJ 125 oC. 0.5V 9'$&,1 9, 500kHz &/.,1 0+], 250kHz
3+6,1 0+]
ELECTRICAL CHARACTERISTICS
The electrical characteristics involve the spread of values guaranteed within the recommended operating conditions.
Typical values represent the median values, which are related to 25°C.
CGATEH = 3.3nF, CGATEL = 6.8nF (unless otherwise specified).
PARAMETER
Gate Drivers
GATEH Source Resistance
GATEH Sink Resistance
GATEL Source Resistance
GATEL Sink Resistance
GATEH Source Current
GATEH Sink Current
GATEL Source Current
GATEL Sink Current
GATEH Rise Time
GATEH Fall Time
GATEL Rise Time
GATEL Fall Time
GATEL low to GATEH high
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GATEH low to GATEL high
delay
Disable Pull-Down
Resistance
Clock
CLKIN Threshold
CLKIN Bias Current
CLKIN Phase Delay
PHSIN Threshold
PHSOUT Propagation
Delay
PHSIN Pull-Down
Resistance
PHSOUT High Voltage
PHSOUT Low Voltage
TEST CONDITION
BOOST – SW = 7V. Note 1
BOOST – SW = 7V. Note 1
VCCL – PGND = 7V. Note 1
VCCL – PGND = 7V. Note 1
BOOST=7V, GATEH=2.5V, SW=0V.
BOOST=7V, GATEH=2.5V, SW=0V.
VCCL=7V, GATEL=2.5V, PGND=0V.
VCCL=7V, GATEL=2.5V, PGND=0V.
BOOST – SW = 7V, measure 1V to 4V
transition time
BOOST – SW = 7V, measure 4V to 1V
transition time
VCCL – PGND = 7V, Measure 1V to 4V
transition time
VCCL – PGND = 7V, Measure 4V to 1V
transition time
BOOST = VCCL = 7V, SW = PGND = 0V,
measure time from GATEL falling to 1V to
GATEH rising to 1V
BOOST = VCCL = 7V, SW = PGND = 0V,
measure time from GATEH falling to 1V to
GATEL rising to 1V
Note 1
Compare to V(VCCL)
CLKIN = V(VCCL)
Measure time from CLKIN<1V to GATEH>1V
Compare to V(VCCL)
Measure time from CLKIN > (VCCL * 50% )
to PHSOUT > (VCCL *50%), 10pF Load
@125oC
I(PHSOUT) = -10mA, measure VCCL –
PHSOUT
I(PHSOUT) = 10mA
MIN
10
10
30
40
-0.5
40
35
4
30
1
TYP
1.0
1.0
1.0
0.4
2.0
2.0
2.0
4.0
5
5
10
5
20
20
80
45
0.0
75
50
15
100
0.6
0.4
MAX UNIT
2.5
2.5
2.5
1.0
A
A
A
A
10 ns
10 ns
20 ns
10 ns
40 ns
40 ns
130 N
57 %
0.5 µA
125 ns
55 %
35 ns
170 N
V
1V
Page 3 of 19
Jan 09, 2008
3Pages IR3507
PIN DESCRIPTION
PIN# PIN SYMBOL
1 IOUT
2 PSI
3 DACIN
4 LGND
5 PHSIN
6 NC
7 PHSOUT
8 CLKIN
9 PGND
10 GATEL
11 NC
12 VCCL
13 BOOST
14
15
16
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18
GATEH
SW
VCC
CSIN+
CSIN-
19 EAIN
20 NC
PIN DESCRIPTION
Output of the Current Sense Amplifier is connected to this pin through a 3k
resistor. Voltage on this pin is equal to V(DACIN) + 33 [V(CSIN+) – V(CSIN-)].
Connecting all IOUT pins together creates a share bus which provides an indication
of the average current being supplied by all the phases. The signal is used by the
Control IC for voltage positioning and over-current protection. OVP mode is initiated
if the voltage on this pin rises above V(VCCL)- 0.8V.
Logic low is an active low (IE low=low power state).
Reference voltage input from the Control IC. The Current Sense signal and PWM
ramp is referenced to the voltage on this pin.
Ground for internal IC circuits. IC substrate is connected to this pin.
Phase clock input.
N/A
Phase clock output.
Clock input.
Return for low side driver and reference for GATEH non-overlap comparator.
Low-side driver output and input to GATEH non-overlap comparator.
N/A
Supply for low-side driver. Internal bootstrap synchronous PFET is connected from
this pin to the BOOST pin.
Supply for high-side driver. Internal bootstrap synchronous PFET is connected
between this pin and the VCCL pin.
High-side driver output and input to GATEL non-overlap comparator.
Return for high-side driver and reference for GATEL non-overlap comparator.
Supply for internal IC circuits.
Non-Inverting input to the current sense amplifier, and input to debug comparator.
Inverting input to the current sense amplifier, and input to synchronous rectification
disable comparator.
PWM comparator input from the error amplifier output of Control IC. Body Braking
mode is initiated if the voltage on this pin is less than V(DACIN).
N/A
Page 6 of 19
Jan 09, 2008
6 Page | |||
ページ | 合計 : 19 ページ | ||
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