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| 型号： | MCP1630VT-E/MC |
| 厂商： | Microchip Technology |
| 文件页数： | 16/26页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST FLYBK ISO 8-DFN |
| 标准包装： | 3,300 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 75% |
| 电源电压： | 3 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-VFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 配用： | MCP1630DM-LED2-ND - BOARD DEM MCP1630 BOOST MODE LED MCP1630RD-NMC1-ND - REF DESIGN MCP1630 NIMH BATT CHG MCP1630RD-DDBK3-ND - REF DESIGN MCP1630V BI-DIR 4CELL MCP1630DM-DDBK4-ND - BOARD CONV DEMO MCP1630 TRPL-OUT MCP1630DM-DDBS2-ND - BOARD DEMO BOOST COUPLED INDUCTR MCP1630DM-DDBS1-ND - BOARD DEMO BOOST AUTO INPUT MCP1630DM-NMC1-ND - BOARD DEMO FOR MCP1630 |
MCP1630/MCP1630V
5.0
APPLICATION
5.3
Bidirectional Power Converter
CIRCUITS/ISSUES
A bidirectional Li-Ion charger/buck regulator is shown
in the “Typical Application Circuit” of the this data
5.1
Typical Applications
sheet. In this example, a synchronous, bidirectional
The MCP1630/V high-speed PWM can be used for any
circuit topology and power-train application when
combined with a microcontroller. Intelligent, cost-
effective power systems can be developed for applica-
tions that require multiple outputs, multiple phases,
adjustable outputs, temperature monitoring and
calibration.
power converter example is shown using the
MCP1630V. In this application, when the ac-dc input
power is present, the bidirectional power converter is
used to charge 4-series Li-Ion batteries by boosting the
input voltage. When ac-dc power is removed, the
bidirectional power converter bucks the battery voltage
down to provide a dc bus for system power. By using
this method, a single power train is capable of charging
5.2
NiMH Battery Charger Application
4-series cell Li-Ion batteries and efficiently converting
the battery voltage down to a low, usable voltage.
A typical NiMH battery charger application is shown in
the “Typical Application Circuit – MCP1630” of this
5.4
Multiple Output Converters
data sheet. In that example, a Single-Ended Primary
Inductive Converter (SEPIC) is used to provide a
constant charge current to the series-connected
batteries. The MCP1630 is used to regulate the charge
current by monitoring the current through the battery
sense resistor and providing the proper pulse width.
The PIC16F818 monitors the battery voltage to provide
a termination to the charge current. Additional features
(trickle charge, fast charge, overvoltage protection,
etc.) can be added to the system using the programma-
bility of the microcontroller and the flexibility of the
MCP1630.
DS21896B-page 16
By using additional MCP1630 devices, multiple output
converters can be developed using a single MCU. If a
two-output converter is desired, the MCU can provide
two PWM outputs that are phased 180° apart. This will
reduce the input ripple current to the source and
eliminate beat frequencies.
? 2005 Microchip Technology Inc.
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