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參數(shù)資料
| 型號(hào)： | TDA21302 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | Multi-Phase PWM Controller for CPU Core Power Supply |
| 中文描述： | 多相PWM控制器，電源為CPU內(nèi)核電源 |
| 文件頁數(shù)： | 12/25頁 |
| 文件大?。?/td> | 588K |
| 代理商： | TDA21302 |
Application Information :
CoreControl
TM
Page 12 of 25
DS-CoreControl-TDA21302
TDA21302 is a multi-phase DC/DC controller that precisely regulates CPU core voltage and balances
the current of different power channels. The converter consisting of TDA21302 and its companion
drivers, TDA21106 and TDA21102, provides high quality CPU power and all the protection functions to
meet the requirement of the latest VRMs.
Voltage Control
The TDA21302 senses the CPU V
CORE
by an precise instrumental amplifier to minimize the voltage drop
on the PCB trace at heavy load condition. VSEN & SGND are the differential input pins for V
CORE
and
their output, VDIF, is the input of the PGOOD & OVP sense. The internal highly accurate VID DAC
provides the reference voltage for VRD10,X compliance. Control loop consists of error amplifier, pulse
width modulator, external driver ICs and power components. Like conventional voltage mode controller,
the output voltage is locked at the V
REF
of the error amplifier and the error signal is used as the control
signal Vc of the pulse width modulator. The PWM signals of different channels are generated by
comparison of EA output and split-phase saw-tooth wave. Power stage transforms V
IN
to output by
PWM signal on-time ratio.
COMP
VID DAC
& Step
VID0
VID1
VID2
VID3
VID4
VID125
Offset
Setting
SGND
VSEN
VOSS
SS
VDIF
FB
INH
+
I
+
I
Power On
Reset
+
I
+
I
+
I
OVP Setting
PG
Setting
Soft
Start
DVD
VCC
PGOOD
OVP
ADJ
PWM Comparator
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