參數(shù)資料
型號(hào): L6710
廠商: 意法半導(dǎo)體
英文描述: 6 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT
中文描述: 6位可編程雙相與動(dòng)態(tài)VID管理控制器
文件頁(yè)數(shù): 4/34頁(yè)
文件大?。?/td> 1610K
代理商: L6710
L6710
4/34
22
OSC/FAULT
Oscillator pin.
It allows programming the switching frequency of each channel: the equivalent switching
frequency at the load side results in being doubled.
Internally fixed at 1.24V, the frequency is varied proportionally to the current sunk (forced)
from (into) the pin with an internal gain of 6kHz/
μ
A (See relevant section for details). If the
pin is not connected, the switching frequency is 150kHz for each channel (300kHz on the
load).
The pin is forced high (5V Typ.) when an Over/Under Voltage is detected; to recover from
these latched conditions, cycle VCC.
Not internally bonded.
Voltage IDentification pins.
Internally pulled-up, connect to SGND to program a ‘0’ while leave floating to program a ‘1’.
They are used to program the output voltage as specified in Table 1 and to set the PGOOD,
OVP and UVP thresholds.
Since the VID pins program the maximum output voltage, according to VRD10 specs, the
device automatically regulates to a voltage VID* = VID–25mV avoiding use of any external
component to lower the regulated voltage.
This pin is an open collector output and is pulled low if the output voltage is not within the
above-specified thresholds and during soft-start. It cannot be pulled up above 3.3V
If not used may be left floating.
Channel 2 HS driver supply. This pin supplies the relative high side driver.
Connect through a capacitor (100nF typ.) to the PHASE2 pin and through a diode to VCC
(cathode vs. boot).
Not internally bonded.
Channel 2 HS driver output.
A little series resistor helps in reducing device-dissipated power.
Channel 2 HS driver return path. It must be connected to the HS2 mosfet source and
provides the return path for the HS driver of channel 2.
Not internally bonded.
Channel 2 LS driver output.
A little series resistor helps in reducing device-dissipated power.
LS drivers return path.
This pin is common to both sections and it must be connected through the closest path to
the LS mosfets source pins in order to reduce the noise injection into the device.
Channel 1 LS driver output.
A little series resistor helps in reducing device-dissipated power.
LS drivers supply: it can be varied from 5V to 12V buses.
Filter locally with at least 1
μ
F ceramic cap vs. PGND.
Channel 1 HS driver return path. It must be connected to the HS1 mosfet source and
provides the return path for the HS driver of channel 1.
Channel 1 HS driver output.
A little series resistor helps in reducing device-dissipated power.
Not internally bonded.
Thermal pad connects the silicon substrate and makes a good thermal contact with the PCB
to dissipate the power necessary to drive external mosfets. Connect to the GND plane with
several vias to improve thermal conduction.
23
N.C.
VID0-5
24 to 29
30
PGOOD
31
BOOT2
32 to 34
35
N.C.
HGATE2
36
PHASE2
37
38
N.C.
LGATE2
39
PGND
40
LGATE1
41
VCCDR
42
PHASE1
43
HGATE1
44
PAD
N.C.
THERMAL
PAD
PIN FUNCTION
(continued)
N
Name
Description
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