L6740L STMicroelectronics, L6740L Datasheet - Page 29
![IC HYBRID CONTROLLERS 48TQFP](/photos/27/13/271375/tqfp-48_sml.jpg)
L6740L
Manufacturer Part Number
L6740L
Description
IC HYBRID CONTROLLERS 48TQFP
Manufacturer
STMicroelectronics
Datasheet
1.L6740LTR.pdf
(44 pages)
Specifications of L6740L
Applications
Hybrid Controllers
Voltage - Supply
9 V ~ 15 V
Current - Supply
20mA
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
Number Of Outputs
2
Output Current
170 A
Input Voltage
13.2 V
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
0 C
Hybrid Controller
compatible with PVI and SVI CPUs
Dual Controller
2 to 4 scalable phases for CPU CORE, 1 phase for NB
Dual Over-current Protection
Average and per-phase
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
L6740L
Manufacturer:
ST
Quantity:
20 000
Part Number:
L6740LTR
Manufacturer:
ST
Quantity:
20 000
L6740L
Figure 11. PVI mode - on-the-fly VID transitions
●
●
OV, UV and PWRGOOD are masked during the transition and re-activated with a 16 clock
cycle delay after the end of the transition to prevent from false triggering.
OTFVID Clock
Int. Reference
VID [0:5]
re-starts monitoring VID after the transition has finished on the next rising-edge
available. OTFVID-clock frequency (F
If the new VID code is more than 1 LSB different from the previous, the device will
execute the transition stepping the reference with the OTFVID-clock frequency F
until the new code has reached. The output voltage rate of change will be of 12.5 mV /
4 μsec. = 3.125 mV/μsec.
SVI mode.
As soon as the controller receives a new valid command to set the VID level for one (or
both) of the two sections, the reference of the involved section steps up or down
according to the target-VID with a 3 mV/μsec. slope (Typ). until the new VID code is
reached.
If a new valid command is issued during the transition, the device updates the target-
VID level and performs the on-the-fly Transition up to the new code.Pre-PWROK Metal
VID
OTF-VID are not managed in this case because the Pre-PWROK Metal VID are stored
after EN is asserted.
V_FIX mode.
L6740L checks for SVC/SVD modifications and, once the new code is stable, it steps
the reference of both sections up or down according to the target-VID with a
3 mV/μsec. slope (Typ). until the new VID code is reached.
V out
T
OTFVID
Vout Slope Controlled by internal
T sw
OTFVID-Clock Oscillator
x 4 Step VID Transition
OTFVID
T
VID
) is 500 kHz.
Vout Slope Controlled by external
4 x 1 Step VID Transition
driving circuit (T
Output voltage positioning
VID
)
OTFVID
29/44
t
t
t
t