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PIFE32251B-R47MS 데이터시트(PDF) 35 Page - Texas Instruments

부품명 PIFE32251B-R47MS
상세설명  PMIC for Intel Apollo Lake Platform
PDF  96 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

PIFE32251B-R47MS 데이터시트(HTML) 35 Page - Texas Instruments

Back Button PIFE32251B-R47MS Datasheet HTML 31Page - Texas Instruments PIFE32251B-R47MS Datasheet HTML 32Page - Texas Instruments PIFE32251B-R47MS Datasheet HTML 33Page - Texas Instruments PIFE32251B-R47MS Datasheet HTML 34Page - Texas Instruments PIFE32251B-R47MS Datasheet HTML 35Page - Texas Instruments PIFE32251B-R47MS Datasheet HTML 36Page - Texas Instruments PIFE32251B-R47MS Datasheet HTML 37Page - Texas Instruments PIFE32251B-R47MS Datasheet HTML 38Page - Texas Instruments PIFE32251B-R47MS Datasheet HTML 39Page - Texas Instruments Next Button
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background image
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PGOOD
DCHG
SWx
NOC
ZC
XCON
DRVLx
PWM
Control Logic
+
+
UV
VSYS
GND
REF
One-Shot
50 µA
BOOTx
DRVHx
FAULT
PGOOD
ILIM
+
VFB
OC
+
+
SS Ramp Comp
EN
VDD
HS
LS
DRV5V_x_x
PGNDSNSx
VREF ± VTH_PG
+
+
Ramp Generator
PMIC Internal Signals
External Inputs/Outputs
±
±
±
±
VREF + VTH_PG
±
+
±
OV
+
±
Copyright © 2017, Texas Instruments Incorporated
35
TPS65094
www.ti.com
SWCS133C – SEPTEMBER 2015 – REVISED FEBRUARY 2019
Submit Documentation Feedback
Product Folder Links: TPS65094
Detailed Description
Copyright © 2015–2019, Texas Instruments Incorporated
6.3.3.1
Controller Overview
The controllers are fast-reacting, high-frequency, scalable output power controllers capable of driving two
external N-MOSFETs. They use a D-CAP2 control scheme that optimizes transient responses at high load
currents for such applications as CORE and DDR supplies. The output voltage is compared with internal
reference voltage after divider resistors. The PWM comparator determines the timing to turn on the high-
side MOSFET. The PWM comparator response maintains a very small PWM output ripple voltage.
Because the device does not have a dedicated oscillator for control loop on board, switching cycle is
controlled by the adaptive ON time circuit. The ON time is controlled to meet the target switching
frequency by feed-forwarding the input and output voltage into the ON time one-shot timer.
The D-CAP2 control scheme has an injected ripple from the SW node that is added to the reference
voltage to simulate output ripple, which eliminates the need for ESR-induced output ripple from D-CAP™
mode control. Thus, low-ESR output capacitors (such as low-cost ceramic MLCC capacitors) can be used
with the controllers.
Figure 6-3. Controller Block Diagram



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