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ATmega16HVB 데이터시트(PDF) 148 Page - ATMEL Corporation

부품명 ATmega16HVB
상세설명  8-bit Microcontroller with 16K/32K Bytes In-System Programmable Flash
PDF  273 Pages
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제조업체  ATMEL [ATMEL Corporation]
홈페이지  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega16HVB 데이터시트(HTML) 148 Page - ATMEL Corporation

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148
8042A–AVR–07/09
ATmega16HVB/32HVB
25. FET Driver
25.1
Features
• High side N-channel FET driver for controlling Charge and Discharge FETs in Li-ion battery
application
• Optional Deep Under-voltage Recovery mode allowing normal operation while charging Deeply
discharged battery cells from 0-volt without an external Pre-charge FET
• Optional Pre-charge FET mode that allows chargers without pre-charge functionality to charge a
Deeply discharged battery from 0-volt
25.2
Overview
The ATmega16HVB/32HVB integrates an N-channel FET driver for turning on and off external
high-side Charge and Discharge FETs in Li-ion battery packs. The FET driver is designed for
outputting a high voltage gate overdrive of typically 13V during normal operation.
Figure 25-1. Simplified Block diagram.
In normal operation FET is controlled by software. SW can enable and disable the Charge FET
and the Discharge FET by writing to the FET Control and Status Register (FCSR).
RPC
ATmega16HVB/32HVB
VFET
OC
OD
+
-
BATT
RDF
RCF
RBATT
PC5
RPF
QDF
QPF
QCF
RPVT
PVT
FET CONTROL
FET DRIVER
CHARGER
DETECT
OPTIONAL
2-4
Li-Ion
Cells
Battery
Pack
Device
/
Charger



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