参数资料
型号: L6728A
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO10
封装: 3 X 3 MM, VFDFPN-10
文件页数: 21/32页
文件大小: 1223K
代理商: L6728A
Obsolete
Product(s)
- Obsolete
Product(s)
L6728A
5A demonstration board
12.1
Demonstration board description
12.1.1
Power input (VIN)
This is the input voltage for the power conversion. The High-Side drain is connected to this
input. This voltage can range from 1.5 V to 12 V bus.
If the voltage is between 5 V and 12 V it can supply also the device (through the Vcc pin)
and in this case the R16 (0
Ω) resistor must be present.
12.1.2
Output (VOUT)
Different output voltage rails have been tested. For each rail a few component need to be
changed: these components are used to program the desiderate output voltage. The OCP
limit is set to ~6 A but it can be changed by replacing the resistors R18.
Note:
All the previous resistors are SMD 0603 package, 1/16W, 1% tolerance.
12.1.3
Signal input (VCC)
Using the input voltage VIN to supply the controller no power is required at this input.
However the controller can be supplied separately from the power stage through the VCC
input (5-12 V) and, in this case, the R16 (0
Ω) resistor must be unsoldered.
12.1.4
Test points
Several test points are provided to have easy access at all important signal characterizing
the device:
COMP: the output of the error amplifier;
FB: the inverting input of the error amplifier;
PGOOD: signaling the regular functioning (active high);
VGDHS: the bootstrap diode anode;
PHASE: Phase node;
LGATE: Low-Side gate pin of the device;
HGATE: High-Side gate pin of the device.
Table 9.
Rail dependent components
Ref.
8 V rail
5 V rail
3.3 V rail
2.5 V rail
1.25 V rail
0.8 V rail
R8, R13
240
Ω
430
Ω
680
Ω
1 k
Ω
3.9 k
Ω
open
相关PDF资料
PDF描述
L6728D 30 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO10
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