MAXIM MAX8707 Technical data
19-3360; Rev 0; 8/04
用于
________________________________
MAX8707
型控制器，用于为
工作减少了输入电流纹波和输出电压波纹，同时简化了
元件选择和布局设计。
有源电压定位功能，降低了功耗和对大体积输出电容的
要求。
MAX8707
直接从电池降压或从
一次变换方案直接从高压电池降压，可达到尽可能高的
效率。另外一种方案，二次变换 (从
而不是从电池降压) 方案能够工作在更高的开关频率，可
获得最小的物理尺寸。
MAX8707
对检流输入，利用单个检流电阻可提供精确的电压定位
斜率和平均电流限流保护。
入，提供差分远端电压检测。
MAX8707
用于在
器降低了启动和关断期间的转换摆率，提供具有最小输
入浪涌电流的软启动，阻尼软关断功能保证没有负输出
下冲。
锁定过压和热过载保护——以及一个独立的电压调节器
电源好”(
“
MAX8707
300kHz或600kHz
引脚
40
请参考
是一款多相 (
AMD Hammer CPU
可以用于两种不同的笔记本
的每一相都有专门的差分检流输入，并包括第
具有一个设置挂起电压的模拟输入，以及一个
码或挂起电压之间转换的摆率控制器。控制
VID
MAX8707
6mmx6mm
MAX8702/MAX8703
集成了输出故障保护电路——欠压、非
)输出。
VROK
提供可选择的开关频率，每相可选择为
的工作频率。
相)、交错式、固定频率、降压
3/4
核供电。多相交错
MAX8707
+5V
的薄型
包含可调增益和偏移的
CPU
系统电源降压，产生核电压。
的系统电源降压
+5V
MAX8707
QFN
。
还有两个专用的输
MAX8707
封装。与其兼容的驱动器
AMD Hammer CPU
概述
核供电方案：
200kHz
采用低截面的
核电源的多相、
固定频率控制器
________________________________
相交错式、固定频率控制器
♦
3/4
在整个输入、负载和温度变化范围内保持
♦
精度
V
OUT
位内置数/模转换器
♦
5
可调挂起电压输入
♦
有源电压定位，具有可调增益和偏移
♦
精确、无损的电流均衡
♦
精确的下垂和电流限制
♦
远端输出和地检测
♦
输出摆率控制
♦
电源好”窗口比较器
♦
5
“
可选开关频率：
♦
输出过压和欠压保护
♦
热故障保护
♦
♦
2V ±0.7%
软启动和关断
♦
基准输出
____________________________
PART TEMP RANGE PIN-PACKAGE
、
MAX8707ETL -40°C to +85°C 40 Thin QFN 6mm x 6mm
________________________________
AMD Hammer
多相
电压定位降压型转换器
笔记本电脑/台式计算机
服务器
CPU
核电源
(DAC)— 0.80V至1.55V
200kHz/300kHz/600kHz
台式计算机
特性
±0.75%
的
定购信息
应用
MAX8707
________________________________________________________________ Maxim Integrated Products 1
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Maxim
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提供的英文版资料。
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。
用于
AMD Hammer CPU
核电源的多相、
固定频率控制器
ABSOLUTE MAXIMUM RATINGS
VCCto GND..............................................................-0.3V to +6V
D0–D4 to GND..........................................................-0.3V to +6V
SKIP, SUS, VROK, ILIM(AVE) to GND......................-0.3V to +6V
SUSV, OFS, OSC to GND.........................................-0.3V to +6V
CSP_, CSN_, CRSP, CRSN to GND .........................-0.3V to +6V
VPS, FBS, CCV, REF to GND .....................-0.3V to (V
ILIM(PK), TRC, TIME to GND .....................-0.3V to (V
PWM_, DRSKP to PGND ............................-0.3V to (V
PGND, GNDS to GND ...........................................-0.3V to +0.3V
MAX8707
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: SHDN can be forced to 12V for debugging prototype boards using the no-fault test mode, which disables fault protection.
CC
CC
CC
+ 0.3V)
+ 0.3V)
+ 0.3V)
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1. VCC= V
GNDS = PGND = SKIP = GND, D0–D4 set for 1.20V (D0–D4 = 01110). T
are at T
PWM CONTROLLER
Input Voltage Range V
DC Output Voltage Accuracy V
SUSV Input Range V
SUSV Input-Bias Current I
OFS Input Range V
OFS GAIN A
OFS Input-Bias Current I
GNDS Input Range V
GNDS Gain A
GNDS Input-Bias Current I
FBS Input-Bias Current I
Switching Frequency Accuracy
(Per Phase)
= +25°C.)
A
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
= 5V, OSC = REF, V
SHDN
SUSV
SUSV
OFS
GNDS
GNDS
GNDS
FBS
f
CC
OUT
OFS
OFS
SW
= V
VPS
Includes loadregulation error
(VPS = FBS)
V
= 0.4V to 2V -0.1 +0.1 µA
SUSV
Negative offsets 0 0.8
Positive offsets 1.2 2.0
∆V
/ ∆V
OUT
V
OFS
∆V
OUT
V
OFS
V
OFS
∆V
OUT
-200mV ≤ V
CRSP = CRSN, CSP_ = CSN_ -10 +10 µA
OSC = GND 180 200 220
OSC = REF 270 300 330
OSC = V
OFS
= 0 to 0.8V
/ ∆V
OFS
= 1.2V to 2V
= 0 to 2V -0.1 +0.1 µA
/ ∆V
GNDS
GNDS
CC
SHDN to GND (Note 1)...........................................-0.3V to +14V
REF Short-Circuit Duration .........................................Continuous
Continuous Power Dissipation (T
40-Pin 6mm x 6mm Thin QFN
(derate 26.3mW/°C above +70°C)................................2.105W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
= V
FBS
, ∆V
, ∆V
,
≤ +200mV
= V
CRSN
= 0°C to +85°C, unless otherwise specified. Typical values
A
DAC codes from
1.10V to 1.55V
DAC codes from
0.80V to 1.075V
SUS = V
= V
OFS
OFS
= V
OFS
OFS-VREF
CRSP
CC
,
= V
,
CSP_
= 1.20V, V
= +70°C)
A
= 0.8V, OFS = SUS =
SUSV
4.5 5.5 V
-0.75 +0.75
-2.0 +2.0
-20 +20 mV
0.4 2.0 V
-0.131 -0.125 -0.118
-0.131 -0.125 -0.118
-200 +200 mV
0.95 1.00 1.05 V/V
-2 +2 µA
540 600 660
%
V
V/V
kHz
2 _______________________________________________________________________________________
用于
)
AMD Hammer CPU
核电源的多相、
固定频率控制器
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VCC= V
GNDS = PGND = SKIP = GND, D0–D4 set for 1.20V (D0–D4 = 01110). T
are at T
TIME Slew-Rate Accuracy
BIAS AND REFERENCE
Quiescent Supply Current (VCC)I
Shutdown Supply Current (VCC)I
Reference Voltage V
Reference Load Regulation ∆V
FAULT PROTECTION
Output Overvoltage-Protection
Threshold
Output Overvoltage Propagation
Delay
Output Undervoltage-Protection
Threshold
Output Undervoltage
Propagation Delay
VROK Transition Blanking Time t
= +25°C.)
A
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
= 5V, OSC = REF, V
SHDN
CC
CC(SHDN
REF
V
OVP
t
OVP
V
UVP
t
UVP
BLANK
= V
FBS
= V
REF
VPS
R
= 143kΩ (6.25mV/µs) -10 +10
TIME
R
= 47kΩ (19mV/µs) to 392kΩ
TIME
(2.28mV/µs)
Startup and shutdown, R
(4.75mV/µs) to 392kΩ (0.57mV/µs)
Measured at VCC, VPS and FBS forced
above the regulation points
Measured at VCC, SHDN = GND 0.05 10 µA
V
= 4.5V to 5.5V, I
CC
I
= 0 to 500µA -2 -0.2
REF
REF
I
= -100µA to 0 0.21 6.2
REF
Measured at VPS
with respect to
unloaded output
voltage, rising edge,
8mV hysteresis
Minimum OVP level 1.1
VPS forced 25mV above trip threshold 10 µs
Measured at VPS with respect to 70% of the
unloaded nominal output voltage
VPS forced 25mV below trip threshold 10 µs
Measured from the time when VPS reaches
the target voltage, slew rate set by R
(Note 2)
= V
CRSN
= 0°C to +85°C, unless otherwise specified. Typical values
A
TIME
= 0 1.986 2.000 2.014 V
PWM (SKIP = GND)
or SKIP mode when
V
≤ V
OUT
SKIP = V
V
> V
OUT
CRSP
= 47kΩ
TRIP
and
CC
TRIP
= V
TIME
= 1.20V, V
CSP_
-15 +15
-20 +20
150 200 250 mV
1.70 1.75 1.80
-30 +30 mV
= 0.8V, OFS = SUS =
SUSV
712mA
20 µs
MAX8707
%
mV
V
Undervoltage measured at VPS with
respect to 87.5% unloaded output voltage,
VROK Threshold
VROK Delay t
VROK Output Low Voltage I
VROK Leakage Current High state, VROK forced to 5.5V 1 µA
_______________________________________________________________________________________ 3
VROK
falling edge, 15mV hysteresis
Overvoltage measured at VPS with respect
to 112.5% of the unloaded output voltage,
rising edge, 15mV hysteresis
VPS forced 25mV outside the VROK trip
thresholds
= 3mA 0.4 V
SINK
-30 +30
-30 +30
10 µs
mV
用于
)
)
)
)
)
)
)
AMD Hammer CPU
核电源的多相、
固定频率控制器
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VCC= V
GNDS = PGND = SKIP = GND, D0–D4 set for 1.20V (D0–D4 = 01110). T
are at T
= +25°C.)
A
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
VCC Undervoltage-Lockout
Threshold
MAX8707
Thermal-Shutdown Threshold T
DROOP AND TRANSIENT RESPONSE
DC Droop Amplifier Offset -1.5 +1.5 mV
DC Droop Amplifier
Transconductance
(CRS Sense Enabled)
= 5V, OSC = REF, V
SHDN
V
UVLO(VCC
SHDN
G
m(VPS
= V
FBS
= V
VPS
Rising edge, hysteresis = 20mV, PWM_
disabled below this level
= V
CRSN
= 0°C to +85°C, unless otherwise specified. Typical values
A
CRSP
= V
CSP_
= 1.20V, V
= 0.8V, OFS = SUS =
SUSV
4.10 4.25 4.45 V
Rising edge hysteresis = 15°C +160 °C
∆I
V
CRSP
VPS
/ (N x ∆V
- V
CRSN
), V
VPS
= V
CRSN
CRS
= -60mV to +60mV,
= 1.2V,
194 200 206 µS
N = number of phases enabled
DC Droop Amplifier
Transconductance
(CRS Sense Disabled)
Transient-Droop Transresistance R
Transient Detection Threshold
CURRENT LIMIT AND BALANCE
Current-Sense Input Preamplifier
Offsets
ILIM(AVE) Input Range
(Adjustable Mode)
V
ILIM(AVE) Average Current-Limit
Threshold Voltage
V
(Positive, Default)
ILIM(AVE) Average Current-Limit
Threshold Voltage
V
(Positive, Adjustable)
ILIM(AVE) Average Current-Limit
Threshold Voltage (Negative)
ILIM(AVE) Input Current I
ILIM(AVE) Current-Limit Default
Switchover Threshold
ILIM(PK) Peak Current-Limit
Threshold Voltage (Positive)
ILIM(PK) Peak Current-Limit
Threshold Voltage (Negative)
G
m(VPS
TRANS
ILIM(AVE
AVELIMIT
AVELIMIT
ILIM(AVE
V
PKLIMIT
∆I
V
V
VPS
VPS
CSP
/ (Σ∆VCS), V
= V
_ = 1.2V,
CSN
_ – V
CSN
_ = -60mV to +60mV
CRSP
= VCC,
194 200 206 µS
Current-sense gain (ACS = 10 typ) divided
by the voltage preamplifier
transconductance (G
m(TRC)
= 2ms typ)
4.75 5.0 5.25 kΩ
Measured at VPS with respect to steadystate VPS regulation voltage; falling edge,
-30 -25 -20 mV
5.5mV hysteresis (typ)
CSP_ - CSN_ -2.0 +2.0 mV
V
REF
- 0.2
V
mV
CRSP - CRSN; ILIM(AVE) = V
V
ILIM(AVE
CRSP - CRSN
V
ILIM(AVE
CRSP - CRSN; ILIM(AVE) = V
CC
= V
= V
CC
V
REF
- 1.0
22 25 28 mV
- 0.2V 7 10 13
REF
- 1.0V 46 50 54
REF
-30 -25 -20 mV
-0.1 +0.1 µA
CC
V
CC
- 0.4
V
mV
CSP_ - CSN_,
ILIM(PK)
LIM(PK)
= R
TRC
R
8V / V
CSP_ - CSN_, R
V
PKLIMIT
, V
PKLIMIT
x
ILIM(PK)
= 50mV
V
PKLIMIT
V
PKLIMIT
= R
V
3
- 1.0
= 30mV 24 30 36
= 50mV 40 50 60
x 8V /
TRC
-60 -50 -40 mV
4 _______________________________________________________________________________________
用于
AMD Hammer CPU
核电源的多相、
固定频率控制器
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VCC= V
GNDS = PGND = SKIP = GND, D0–D4 set for 1.20V (D0–D4 = 01110). T
are at T
ILIM(PK) Idle Current-Limit
Threshold Voltage (Skip Mode)
Current-Sense Input Current
Current-Sense Common-Mode
Input Range
Phase Disable Threshold CSP4 3 VCC - 1
CRS Sense Input Disable
Threshold
LOGIC AND I/O
Logic Input High Voltage V
Logic Input Low Voltage V
SHDN No-Fault Threshold To enable no-fault mode 11 13 V
D0–D4 Logic Input High Voltage 0.8 V
D0–D4 Logic Input Low Voltage 0.4 V
OSC 3-Level Input Logic Levels V
SKIP Input Logic Levels V
Logic Input Current SHDN, SKIP, SUS, OSC, D0–D4 = 0 to 5V -1 +1 µA
Logic Output High Voltage V
Logic Output Low Voltage V
= +25°C.)
A
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
= 5V, OSC = REF, V
SHDN
V
IDLE
OSC
SKIP
IH
IL
OH
OL
= V
FBS
S KI P
T RC
= V
≥ 1.2V ,
x 8V / V
SOURCE
SINK
VPS
C S P _ - C S N _, V
I LI M ( P K )
P KL IM IT
= R
= 50m V
R
V
CSP_, CRSP -0.2 +0.2
CSN_, CRSN -1.0 +1.0
CRSP, CRSN, CSP_, CSN_ 0 2 V
CRSP 3 V
SHDN, SUS 2.4 V
SHDN, SUS 0.8 V
PWM_, DRSKP; I
PWM_, DRSKP; I
= V
CRSN
= 0°C to +85°C, unless otherwise specified. Typical values
A
P KL IM IT
High (VCC)
Medium (REF) 1.8 2.2
Low (GND) 0.4
High 1.2
Low (GND) 0.8
= 3mA
= 3mA 0.4 V
CRSP
,
= V
CSP_
= 1.20V, V
258mV
V
-
CC
0.4
V
-
CC
0.4
= 0.8V, OFS = SUS =
SUSV
V
CC
0.4
V
-
CC
- 1
CC
0.4
-
MAX8707
µA
V
V
V
V
V
_______________________________________________________________________________________ 5
用于
)
AMD Hammer CPU
核电源的多相、
固定频率控制器
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1. VCC= V
GNDS = PGND = SKIP = GND, D0–D4 set for 1.20V (D0–D4 = 01110). T
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
PWM CONTROLLER
Input Voltage Range V
MAX8707
DC Output Voltage Accuracy V
SUSV Input Range V
OFS Input Range V
OFS GAIN A
GNDS Input Range V
GNDS Gain A
Switching Frequency Accuracy
(Per Phase)
TIME Slew-Rate Accuracy
BIAS AND REFERENCE
Quiescent Supply Current (VCC)I
Shutdown Supply Current (VCC)I
Reference Voltage V
Reference Load Regulation ∆V
FAULT PROTECTION
Output Overvoltage-Protection
Threshold
= 5V, OSC = REF, V
SHDN
OUT
SUSV
OFS
OFS
GNDS
GNDS
f
SW
CC(SHDN
V
OVP
CC
CC
REF
REF
= V
VPS
Includes loadregulation error
(VPS = FBS)
Negative offsets 0 0.8
Positive offsets 1.2 2.0
∆V
/ ∆V
OUT
V
OFS
∆V
OUT
V
OFS
∆V
OUT
-200mV ≤ V
OSC = GND 180 220
OSC = REF 270 330
OSC = V
R
TIME
R
TIME
(2.28mV/µs)
Startup and shutdown, R
(4.75mV/µs) to 392kΩ (0.57mV/µs)
Measured at VCC, VPS and FBS forced
above the regulation points
Measured at VCC, SHDN = GND 10 µA
V
CC
I
REF
I
REF
Measured at VPS
with respect to
unloaded output
voltage, rising edge,
8mV hysteresis
OFS
= 0 to 0.8V
/ ∆V
OFS
= 1.2V to 2V
/ ∆V
GNDS
GNDS
CC
= 143kΩ (6.25mV/µs) -10 +10
= 47kΩ (19mV/µs) to 392kΩ
= 4.5V to 5.5V, I
= 0 to 500µA -2
= -100µA to 0 6.2
= V
FBS
; ∆V
; ∆V
,
≤ +200mV
= V
CRSN
= -40°C to +85°C, unless otherwise specified.) (Note 3)
A
DAC codes from
1.10V to 1.55V
DAC codes from
0.80V to 1.075V
SUS = V
= V
OFS
OFS,
= V
OFS
OFS
TIME
= 0 1.98 2.02 V
REF
PWM (SKIP = GND)
or SKIP mode when
≤ V
V
OUT
SKIP = V
V
> V
OUT
CRSP
CC
- V
REF,
= 47kΩ
TRIP
and
CC
TRIP
= V
= 1.20V, V
CSP_
4.5 5.5 V
-1.0 +1.0
-3.0 +3.0
-25 +25 mV
0.4 2.0 V
-0.131 -0.118
-0.131 -0.118
-200 +200 mV
0.95 1.05 V/V
540 660
-15 +15
-20 +20
150 250 mV
1.70 1.80 V
= 0.8V, OFS = SUS =
SUSV
%
V
V/V
kHz
%
12 mA
mV
6 _______________________________________________________________________________________
用于
)
)
)
)
)
)
AMD Hammer CPU
核电源的多相、
固定频率控制器
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VCC= V
GNDS = PGND = SKIP = GND, D0–D4 set for 1.20V (D0–D4 = 01110). T
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
Output Undervoltage-Protection
Threshold
VROK Threshold
VROK Output Low Voltage I
VCC Undervoltage-Lockout
Threshold
DROOP AND TRANSIENT RESPONSE
DC Droop Amplifier Offset -2 +2 mV
DC Droop Amplifier
Transconductance
(CRS Sense Enabled)
DC Droop Amplifier
Transconductance
(CRS Sense Disabled)
= 5V, OSC = REF, V
SHDN
V
V
UVLO(VCC
G
m(VPS
G
m(VPS
UVP
= V
VPS
Measured at VPS with respect to 70% of the
unloaded nominal output voltage
Undervoltage, measured at VPS with
respect to 87.5% of the unloaded output
voltage, falling edge, 15mV hysteresis
Overvoltage, measured at VPS with respect
to 112.5% of the unloaded output voltage,
rising edge, 15mV hysteresis
= 3mA 0.4 V
SINK
Rising edge, hysteresis = 20mV, PWM_
disabled below this level
∆I
/ (N x ∆V
VPS
- V
V
CRSP
N = number of phases enabled
∆I
/ (Σ∆VCS), V
VPS
= V
V
VPS
CSP
CSN
_ - V
V
= V
FBS
), V
CRS
= -60mV to +60mV,
CRSN
CRSP
_ = 1.2V,
_ = -60mV to +60mV
CSN
= V
CRSN
= -40°C to +85°C, unless otherwise specified.) (Note 3)
A
= V
VPS
= VCC,
CRSP
CRSN
= V
CSP_
= 1.2V,
= 1.20V, V
-40 +40 mV
-40 +40
-40 +40
4.10 4.45 V
190 210 µS
190 210 µS
= 0.8V, OFS = SUS =
SUSV
MAX8707
mV
Transient-Droop Transresistance R
CURRENT LIMIT AND BALANCE
Current-Sense Input Preamplifier
Offsets
ILIM(AVE) Input Range
(Adjustable Mode)
ILIM(AVE) Average Current-Limit
Threshold Voltage
(Positive, Default)
ILIM(AVE) Average Current-Limit
Threshold Voltage
(Positive, Adjustable)
ILIM(AVE) Average Current-Limit
Threshold Voltage (Negative)
ILIM(AVE) Current-Limit Default
Switchover Threshold
_______________________________________________________________________________________ 7
V
V
V
TRANS
ILIM(AVE
AVELIMIT
AVELIMIT
Current-sense gain (ACS = 10 typ) divided
by the voltage preamplifier
transconductance (G
CSP_ - CSN_ -2.5 +2.5 mV
CRSP - CRSN; ILIM(AVE) = V
CRSP - CRSN
CRSP - CRSN; ILIM(AVE) = V
m(TRC)
V
ILIM(AVE
V
ILIM(AVE
= 2mS typ)
CC
= V
REF
= V
REF
CC
- 0.2V 5 15
- 1.0V 44 56
4.50 5.25 kΩ
V
REF
- 1.0
20 30 mV
-31 -19 mV
3
V
REF
- 0.2
V
CC
- 0.4
mV
V
V
用于
AMD Hammer CPU
核电源的多相、
固定频率控制器
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VCC= V
GNDS = PGND = SKIP = GND, D0–D4 set for 1.20V (D0–D4 = 01110). T
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
ILIM(PK) Peak Current-Limit
Threshold Voltage (Positive)
MAX8707
ILIM(PK) Peak Current-Limit
Threshold Voltage (Negative)
= 5V, OSC = REF, V
SHDN
V
PKLIMIT
= V
VPS
CSP_ - CSN_,
R
8V / V
CSP_ - CSN_,
R
V
ILIM(PK)
LIM(PK)
ILIM(PK)
PKLIMIT
= R
= R
= 50mV
FBS
TRC
TRC
= V
x
x 8V / V
= V
CRSN
= -40°C to +85°C, unless otherwise specified.) (Note 3)
A
V
PKLIMIT
V
PKLIMT
PKLIMIT
= V
CRSP
= 30mV 24 36
= 50mV 40 60
,
CSP_
= 1.20V, V
-60 -40 mV
= 0.8V, OFS = SUS =
SUSV
mV
ILIM(PK) Idle Current-Limit
Threshold Voltage (Skip Mode)
Current-Sense Input Current
Current-Sense Common-Mode
Input Range
Phase Disable Threshold CSP4 3
CRS Sense Input Disable
Threshold
LOGIC AND I/O
Logic Input High Voltage V
Logic Input Low Voltage V
D0–D4 Logic Input High Voltage 0.8 V
D0–D4 Logic Input Low Voltage 0.4 V
OSC 3-Level Input Logic Levels V
SKIP Input Logic Levels V
Logic Output High Voltage V
Note 2: VROK is blanked during the transitions, when the internal target is being slewed. See the Output-Voltage Transition Timing
Note 3: Specifications to T
section. VROK is reenabled in t
= -40°C are guaranteed by design and are not production tested.
A
V
IDLE
OSC
SKIP
OH
BLANK
C S P _ - C S N _, V
R
V
CSP_, CRSP -0.2 +0.2
CSN_, CRSN -1.0 +1.0
CRSP, CRSN, CSP_, CSN_ 0 2 V
CRSP 3
SHDN, SUS 2.4 V
IH
SHDN, SUS 0.8 V
IL
High (VCC)
Medium (REF) 1.8 2.2
Low (GND) 0.4
High 1.2
Low (GND) 0.8
PWM_, DRSKP; I
(20µs) after the transition is completed.
I LI M ( P K )
P KL IM IT
= R
= 50m V
S KI P
T RC
≥ 1.2V ,
x 8V / V
SOURCE
P KL IM IT
= 3mA
,
28mV
µA
V
V
CC
- 0.4
V
CC
- 0.4
CC
- 0.4
V
CC
- 0.4
V
V
V
V
V
8 _______________________________________________________________________________________
用于
OUTPUT VOLTAGE DEVIATION
vs. LOAD CURRENT
MAX8707 toc04
LOAD CURRENT (A)
OUTPUT VOLTAGE (mV)
604020
-100
-80
-60
-40
-20
0
20
-120
080
V
OUT
= 1.00V
V
OUT
= 1.30V
VIN = 12V
SINGLE-PHASE
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 0.800V)
MAX8707 toc05
LOAD CURRENT (A)
EFFICIENCY (%)
110
60
70
80
90
100
50
0.1 100
VIN = 8V
VIN = 12V
VIN = 20V
SKIP = SUS = V
CC
0
50
100
150
200
0 5 10 15 20 25
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
(4-PHASE FORCED-PWM MODE)
MAX8707 toc06
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
I
BIAS
I
IN
SKIP = V
CC
0
2
6
4
8
10
0105152025
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
(1-PHASE PULSE SKIPPING)
MAX8707 toc07
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
SKIP = GND
I
BIAS
I
IN
= 15µA
OUTPUT OFFSET VOLTAGE
vs. OFS VOLTAGE
MAX8707 toc08
OFS VOLTAGE (V)
OUTPUT OFFSET VOLTAGE (mV)
1.51.00.5
-100
-50
0
50
100
150
-150
0 2.0
UNDEFINED
REGION
REFERENCE VOLTAGE
DISTRIBUTION
MAX8707 toc09
REFERENCE VOLTAGE (V)
SAMPLE PERCENTAGE (%)
2.0052.0001.995
10
20
30
40
50
0
1.990 2.010
SAMPLE SIZE = 100
AMD Hammer CPU
核电源的多相、
固定频率控制器
_______________________________________________________________
(Circuit of Figure 1. VIN= 12V, VCC= 5V, SUS = SKIP = GND, SHDN = VCC, V
EFFICIENCY vs. LOAD CURRENT
(V
100
90
OUT
VIN = 8V
= 1.525V)
MAX8707 toc01
EFFICIENCY vs. LOAD CURRENT
(V
100
90
OUT
VIN = 8V
= 1.300V)
= 0.80V, TA= +25°C, unless otherwise specified.)
SUSV
EFFICIENCY vs. LOAD CURRENT
(V
100
MAX8707 toc02
90
典型工作特性
= 1.000V)
OUT
VIN = 8V
MAX8707
MAX8707 toc03
80
70
EFFICIENCY (%)
60
50
1 100
LOAD CURRENT (A)
VIN = 12V
VIN = 20V
10
80
70
EFFICIENCY (%)
60
50
1 100
LOAD CURRENT (A)
VIN = 12V
VIN = 20V
10
80
VIN = 12V
70
EFFICIENCY (%)
60
50
1100
VIN = 20V
10
LOAD CURRENT (A)
_______________________________________________________________________________________ 9
用于
OUTPUT OFFSET VOLTAGE
DISTRIBUTION
MAX8707 toc10
OUTPUT OFFSET VOLTAGE (mV)
SAMPLE PERCENTAGE (%)
1-1-3
10
20
30
40
50
0
-5 53
SAMPLE SIZE = 100
1.550V
0.800V
VPS TRANSCONDUCTANCE
DISTRIBUTION
MAX8707 toc11
TRANSCONDUCTANCE (µS)
SAMPLE PERCENTAGE (%)
203201199197
10
20
30
40
50
60
70
0
195 205
SAMPLE SIZE = 100
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0 5 10 15 20 25
CURRENT-SENSE VOLTAGE DIFFERENCE
vs. LOAD CURRENT
MAX8707 toc12
LOAD CURRENT (A)
CURRENT-SENSE DIFFERENCE (mV)
STARTUP WAVEFORM
(NO LOAD)
MAX8707 toc13
A. SHDN, 5V/div
B. DRSKP, 10V/div
C. REF, 2V/div
D. OUT, 1V/div
E. VROK, 10V/div
F. DL1, 10V/div
G. INDUCTOR CURRENT
(I
L1
), 10A/div
200µs/div
0
0
3.3V
A
B
C
D
E
F
G
0
0
5V
2V
1V
STARTUP WAVEFORM
(20A LOAD)
MAX8707 toc14
A. SHDN, 5V/div
B. DRSKP, 10V/div
C. REF, 2V/div
D. OUT, 1V/div
E. VROK, 10V/div
F. DL1, 10V/div
G. INDUCTOR CURRENT
(I
L1
), 10A/div
200µs/div
0
0
3.3V
A
B
C
D
E
F
G
0
0
5V
2V
1V
SHUTDOWN WAVEFORM
(NO LOAD)
MAX8707 toc15
A. SHDN, 5V/div
B VROK, 10V/div
C. OUT, 1V/div
D. DL1, 10V/div
E. INDUCTOR CURRENT
(I
L1
), 10A/div
200µs/div
0
0
3.3V
A
B
C
D
E
0
0
5V
1.3V
AMD Hammer CPU
固定频率控制器
核电源的多相、
____________________________________________________________
(Circuit of Figure 1. VIN= 12V, VCC= 5V, SUS = SKIP = GND, SHDN = VCC, V
= 0.80V, TA= +25°C, unless otherwise specified.)
SUSV
MAX8707
典型工作特性(续
)
10 ______________________________________________________________________________________
用于
AMD Hammer CPU
核电源的多相、
固定频率控制器
____________________________________________________________
(Circuit of Figure 1. VIN= 12V, VCC= 5V, SUS = SKIP = GND, SHDN = VCC, V
65A
10A
1.30V
12V
20A
10A
0
0
A. I
OUT
50A/div
B. V
OUT
LOAD TRANSIENT
(V
OUT
= 10A TO 65A,
, 100mV/div
= 1.30V)
20µs/div
C. LX1, 10V/div
D. INDUCTOR CURRENT
(I
), 10A/div
L1
MAX8707 toc16
30A
A
B
C
D
1.00V
12V
10A
0
0
0
A. I
50A/div
B. V
= 0 TO 30A,
OUT
, 50mV/div
OUT
LOAD TRANSIENT
= 1.00V)
(V
OUT
20µs/div
C. LX1, 10V/div
D. INDUCTOR CURRENT
(I
= 0.80V, TA= +25°C, unless otherwise specified.)
SUSV
TRANSIENT PHASE REPEAT
0
0
A. I
= 0 TO 70A,
OUT
100A/div
, 100mV/div
B. V
OUT
), 10A/div
L1
MAX8707 toc17
70A
A
0A
1.30V
B
20V
C
20A
10A
D
典型工作特性(续
MAX8707 toc18
VIN = 20V
2µs/div
C. LX1, 10V/div
D. INDUCTOR CURRENT
), 10A/div
(I
L1
MAX8707
)
A
B
C
D
3.3V
0.2V
1.300V
1.275V
5A
5A
0
0
A. DPSLP, 5V/div
B. OFS, 200mV/div
C. V
OUT
DEEP-SLEEP TRANSITION
I
OUT
20µs/div
D. INDUCTOR CURRENT
), 10A/div
(I
, 25mV/div
L1
E. INDUCTOR CURRENT
), 10A/div
(I
L3
MAX8707 toc19
= 20A
SUSPEND EXIT TRANSITION
3.3V
A
B
C
D
E
0
1.30V
0.80V
5V
0
A. SUS, 5V/div
, 500mV/div
B. V
OUT
C. DRSKP, 5V/div
20µs/div
MAX8707 toc20
D. INDUCTOR CURRENT
(IL1), 10A/div
E. INDUCTOR CURRENT
), 10A/div
(I
L3
3.3V
A
0
1.30V
B
0.80V
C
5V
0
D
E
A. SUS, 5V/div
B. V
C. DRSKP, 5V/div
, 500mV/div
OUT
(SKIP = SUS)
200µs/div
MAX8707 toc21
D. INDUCTOR CURRENT
(IL1), 10A/div
E. INDUCTOR CURRENT
), 10A/div
(I
L3
A
B
C
D
E
SUSPEND TRANSITION
______________________________________________________________________________________ 11
用于
SUSPEND TRANSITION
(SKIP = SUS)
MAX8707 toc22
A. SUS, 5V/div
B. V
OUT
, 500mV/div
C. DRSKP, 5V/div
D. INDUCTOR CURRENT
(IL1), 10A/div
E. INDUCTOR CURRENT
(I
L3
), 10A/div
100µs/div
0
3.3V
A
B
C
D
E
0
1.30V
0.80V
5V
SUSPEND TRANSITION
(SKIP = GND)
MAX8707 toc23
A. SUS, 5V/div
B. V
OUT
, 500mV/div
C. DRSKP, 5V/div
D. INDUCTOR CURRENT
(IL1), 10A/div
E. INDUCTOR CURRENT
(I
L3
), 10A/div
40µs/div
0
3.3V
A
B
C
D
E
0
1.30V
0.80V
5V
D1 (25mV) VID TRANSITION
MAX8707 toc24
A. D1, 5V/div
B. V
OUT
, 25mV/div
C. INDUCTOR CURRENT
(IL1), 10A/div
D. INDUCTOR CURRENT
(I
L3
), 10A/div
20µs/div
0
0
3.3V
A
B
C
D
0
1.30V
1.275V
D3 (200mV) VID TRANSITION
MAX8707 toc25
A. D3, 5V/div
B. V
OUT
, 200mV/div
C. INDUCTOR CURRENT
(IL1), 10A/div
D. INDUCTOR CURRENT
(I
L3
), 10A/div
20µs/div
0
0
3.3V
A
B
C
D
0
1.30V
1.10V
AMD Hammer CPU
固定频率控制器
核电源的多相、
____________________________________________________________
(Circuit of Figure 1. VIN= 12V, VCC= 5V, SUS = SKIP = GND, SHDN = VCC, V
= 0.80V, TA= +25°C, unless otherwise specified.)
SUSV
MAX8707
典型工作特性(续
)
12 ______________________________________________________________________________________
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