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参数资料
| 型号： | MAX1980ETP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 29/33页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 20-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 系列： | Quick-PWM™ |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 550kHz |
| 占空比： | 50% |
| 电源电压： | 4.5 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 85°C |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 包装： | 管件 |
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Quick-PWM Slave Controller with
Driver Disable for Multiphase DC-DC Converter
Typical Operating Circuit
5V BIAS
SUPPLY
REF
V DD
V CC
POL
DD
V+
BST
DH
LX
INPUT
OUTPUT
(MASTER)
FLOAT
(300kHz)
ILIM
(MASTER)
ILIM
TON
LIMIT
MAX1980
DL
PGND
CS+
CS-
FB
(MASTER)
COMP
GND
CM+
CM-
TRIG
MASTER CURRENT-
SENSE RESISTOR
MASTER LOW-SIDE GATE DRIVER
side MOSFET or between the inductor and the out-
put filter capacitor.
8) Route high-speed switching nodes away from sen-
sitive analog areas (COMP, ILIM). Make all pin-
strap control input connections ( SHDN , ILIM, POL)
to analog ground or V CC rather than power ground
or V DD .
Layout Procedure
1) Place the power components first, with ground termi-
nals adjacent (low-side MOSFET source, C IN , C OUT ,
and D1 anode). If possible, make all these connec-
tions on the top layer with wide, copper-filled areas.
2) Mount the controller IC adjacent to the low-side
MOSFET. The DL gate trace must be short and
wide (50mils to 100mils wide if the MOSFET is 1
inch from the controller IC).
3) Group the gate-drive components (BST diode and
capacitor, V DD bypass capacitor) together near the
controller IC.
4) Make the DC-DC controller ground connections as
shown in Figure 1. This diagram can be viewed as
having four separate ground planes: input/output
ground, where all the high-power components go;
the power ground plane, where the PGND pin and
V DD bypass capacitor go; the master ’ s analog
ground plane where sensitive analog components,
the master ’ s GND pin and V CC bypass capacitor
go; and the slave ’ s analog ground plane where the
slave ’ s GND pin, and V CC bypass capacitor go.
The master ’ s GND plane must meet the PGND
plane only at a single point directly beneath the IC.
Similarly, the slave ’ s GND plane must meet the
PGND plane only at a single point directly beneath
the IC. The respective master and slave ground
planes should connect to the high-power output
ground with a short metal trace from PGND to the
source of the low-side MOSFET (the middle of the
star ground). This point must also be very close to
the output capacitor ground terminal.
5) Connect the output power planes (V CORE and sys-
tem ground planes) directly to the output filter
capacitor positive and negative terminals with multi-
ple vias. Place the entire DC-DC converter circuit
as close to the CPU as is practical.
Chip Information
TRANSISTOR COUNT: 1424
PROCESS: BiCMOS
______________________________________________________________________________________
29
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1980ETP+ | 功能描述:DC/DC 开关控制器 PWM Slave Controller w/Driver Disable RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1980ETP+T | 功能描述:DC/DC 开关控制器 PWM Slave Controller w/Driver Disable RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1980ETP+TG075 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1980ETP-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1980ETP-TG075 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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