MAX8772GTL 데이터 시트보기 (PDF) - Maxim Integrated
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MAX8772GTL Datasheet PDF : 47 Pages
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CONFIDENTIAL INFORMATION – RESTRICTED TO INTEL® IMVP-6 LICENSEES
MAX8770/MAX8771/MAX8772 Dual-Phase, Quick-
PWM Controller for IMVP-6+ CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VDD = VCC = VSHDN = VPSI = VDPRSTP = 5V, DPRSLPVR = GNDS = PGND_ = GND, VFB = VCCI = VCSP_ = VCSN_
= 1.200V, D0–D6 set for 1.20V (D0–D6 = 0001100). TA = 0°C to +85°C, unless otherwise specified. Typical values are at TA = +25°C.)
PARAMETER
DROOP AND BALANCE
DC Droop Amplifier Offset
DC Droop Amplifier
Transconductance
Current-Balance
Preamplifier Offset
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Gm(FB)
∆IFB/(Σ∆VCS),
VFB = VCSN_ = 1.2V,
VCSP_ - VCSN_ = 0 to +60mV
-1.0
+1.0
mV
590
600
610
µS
[V(CSP1, CSN_) - V(CSP2, CSN_)] at ICCI = 0
-1.0
+1.0
mV
Current-Balance Amplifier
Transconductance
Gm(CCI)
∆ ICCI/∆ [V(CSP1, CSN_), V(CSP2, CSN_)]
CCI = FB = CSN_ = 0.45V to 1.5V, and
V(CSP_, CSN_) = -10mV to +10mV
CURRENT LIMIT
Valley Current-Limit Threshold
(Positive)
VLIMIT CSP_ - CSN_
Valley Current-Limit Threshold
(Negative)
CSP_, CSN_
Zero Crossing Threshold
Current-Sense Input Current
VZX
PGND1 - LX1, DPRSLPVR = high (skip mode)
CSP_
CSN_
CSN12 (MAX8771)
Common-Sense Common-Mode
Input Range
CSP_ -CSN_
Phase 2 Disable Threshold
Gate Drivers
GATE DRIVERS
DH_ Gate Driver
On-Resistance
DL_ Gate Driver
On-Resistance
CSP2
RON(DH_)
RON(DL_)
BST_ -LX_ forced
to 5V
High state (pullup)
Low state (pulldown)
High state (pullup)
Low state (pulldown)
DH_ Gate Driver Source/Sink
Current
IDH
DH_ forced to 2.5V, BST_ - LX_ forced to 5V
DL_ Gate Driver Source Current
DL_ Gate Driver Sink Current
Driver Propagation Delay
IDL(SOURCE)
IDL(SINK)
DL_ forced to 2.5V
DL_ forced to 2.5V
DH_ low to DL_ high
DL_ low to DH_ high
DL_ Transition Time
DH_ Transition Time
DL_ falling, CDL_ = 3nF
DL_ rising, CDL_ = 3nF
DH_ falling, CDH_ = 3nF
DH_ rising, CDH_ = 3nF
200
µS
19.5 22.5 25.5
mV
-35
-30
-25
mV
2.5
mV
-0.2
+0.2
-0.2
+0.2
µA
-0.4
+0.4
0
2
V
3 VCC - 1 VCC - 0.4
0.9
2.5
Ω
0.7
2.5
0.7
2.0
Ω
0.25 0.5
2.2
A
2.7
A
8
A
18
25
ns
9
20
20
ns
20
20
ns
20
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