参数资料
型号: IR3622AMPBF
厂商: International Rectifier
文件页数: 10/33页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 32MLPQ
标准包装: 73
PWM 型: 电压模式
输出数: 2
频率 - 最大: 600kHz
占空比: 84%
电源电压: 4.5 V ~ 14.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 32-VFQFN 裸露焊盘
包装: 管件
配用: IRDC3622S-ND - BOARD EVALUATION W/IR3622MPBF
IRDC3622D-ND - BOARD EVAL W/IR3622MPBF DUAL OUT
IR3622AMPbF
Circuit Description
THEORY OF OPEARTION
Introduction
The IR3622A is a versatile device for high
performance buck converters. It consists of two
synchronous buck controllers which can be
operated either in two independent outputs mode
or in current share single output mode for high
current applications.
The timing of the IC is provided by an internal
oscillator circuit which generates two-180 o -out-of-
Enable
The enable features another level of flexibility for
start up. The Enable has precise threshold which
is internally monitored by under-voltage lockout
circuit.
It’s threshold can be externally programmed to
desired level by using two external resistors, so
the converter doesn’t start up until the input
voltage is sufficiently high (see figure 3).
phase clock that can be externally programmed
up to 600kHz per phase.
Under-Voltage Lockout
The under-voltage lockout circuit monitors two
signals (Vcc and Enable). This ensures the
correct operation of the converter during power
up and power down sequence. The driver
outputs remain in the off state whenever one of
these signals drop below set thresholds. Normal
operation resumes once these signals rise above
the set values. Figure 3 shows a typical start up
sequence.
12V
11V
12V
4.1V
7.2V
Vbus
Vcc
Vout3
Seq
3V
Enable OK (IC's POR)
Enable
SS
Fig. 3: Normal Start up, Enable threshold is externally set to 11V
Seq pin is pulled to Vout3 prior to start up
www.irf.com
10
相关PDF资料
PDF描述
IR3622MTRPBF IC REG CTRLR BUCK PWM VM 32MLPQ
IR3623MTRPBF IC REG CTRLR BUCK PWM VM 32MLPQ
IR3624MPBF IC REG CTRLR BUCK PWM VM 10-MLPD
IR3628MPBF IC CTLR PWM BUCK SYNC 12-MLPD
IR3629AMTRPBF IC CTLR PWM SYNC BUCK 12-MLPD
相关代理商/技术参数
参数描述
IR3622AMTRPBF 功能描述:开关变换器、稳压器与控制器 2 CH OR 2 PHASE SYNC PWM CNTRLR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel
IR3622MPBF 功能描述:IC REG CTRLR BUCK PWM VM 32MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR)
IR3622MTRPBF 功能描述:开关变换器、稳压器与控制器 HI FREQ 2-PHASE Single or Dual SYNCH RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel
IR3623MPBF 功能描述:IC REG CTRLR BUCK PWM VM 32MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR)
IR3623MPBF_1 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING