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| LTC3816_15 Datasheet, PDF (40/44 Pages) Linear Technology – Single-Phase Wide VIN Range DC/DC Controller for Intel IMVP-6/IMVP-6.5 CPUs | |||
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LTC3816
Typical Applications
An IMVP-6 Converter Using Current Sense Resistor with â5.7mV/A AVP Slope
4.75k 3.32k
INTVCC
1000pF
VRON
22pF
20k
10k
10pF
1500pF
DPRSLPVR
470pF
22pF
33pF
1000pF 124Ω
2.37k
1.1V
GND ITC ITCFB SGND ISENN IMAX ISENP LFF
56Ω
PREIMON
VRTT#
IMON
CLKEN#
RPTC
PWRGD
VRON
VSS(SEN)
VCC(SEN)
SERVO
VFB
COMP
LTC3816
SW
TG
BOOST
VIN
EXTVCC
1µF
INTVCC
BG
SS
DPRSLPVR
CSLEW
BSOURCE
MODE/SYNC
RFREQ
VID0 VID1 VID2 VID3 VID4 VID5 VID6
VID0 VID1 VID2 VID3 VID4 VID5 VID6
3.3V
1.9k 1.9k
VRTT#
CLKEN#
4.5V TO 25V
8
+ VIN
1
CIN
0.1µF
5
6, 7 L
4
DB
INTVCC
4.7µF
2, 3
Si4816BDY
PTC
RSEN
CBULK +
330µF
s2
100Ω
fSYNC
CBULK: SANYO POSCAP 2TPF330M6
L: VISHAY IHLP2525CZ-06 (1µH, DCR = 8.44mΩ)
PTC: MURATA PRF18BC471QB1RB
RSEN: PANASONIC ERJM1WTF4M0U
CCER
10µF
s6
VCC(CORE)
ILOAD(MAX)
4A
VSS(CORE)
100Ω
3816 TA02
Efficiency
100
VCC(CORE) = 1V
90 fOSC = 400kHz
80 VEXTVCC = 0V
70
60
50
VIN = 5V
40
VIN = 12V
30
20
10
0
0.01
CONTINUOUS MODE
PULSE-SKIPPING MODE
0.1
1
LOAD CURRENT (A)
3816 TA02b
Transient Waveform
VCC(CORE)
20mV/DIV
ILOAD
2A/DIV
20µs/DIV
3816 TA02b
3816f
40
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