参数资料
| 型号： | SP6132HEU-L |
| 厂商： | Exar Corporation |
| 文件页数： | 6/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 10-MSOP |
| 标准包装： | 50 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 360kHz |
| 占空比： | 100% |
| 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： | -40°C ~ 85°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
THEORY OF OPERATION: Continued
Error Amplifier and Voltage Loop
As stated before, the heart of the SP6132H
voltage error loop is a high performance, wide
bandwidth transconductance amplifier. Be-
cause of the amplifier’s current limited (+150 μ A)
transconductance, there are many ways to com-
pensate the voltage loop or to control the COMP
pin externally. If a simple, single pole, single
zero response is required, then compensation
can be as simple as an RC circuit to ground. If a
more complex compensation is required, then
the amplifier has enough bandwidth (45 ° at 4
MHz) and enough gain (60dB) to run Type III
compensation schemes with adequate gain and
phase margins at cross over frequencies greater
than 50kHz.
Gate Drivers
The SP6132H contains a pair of powerful 2 ?
SOURCE and 1.5 ? SINK drivers. These state-
of-the-art drivers are designed to drive external
NFETs capable of handling up to 30A. Rise,
fall, and non-overlap times have all been minized
to achieve maximum efficiency. All drive pins
GH, GL & SWN are monitored continuously to
ensure that only one external NFET is ever on at
any given time.
GATE DRIVER TEST CONDITIONS
90%
The common mode output of the error amplifier
is 0.9V to 2.2V. Therefore, the PWM voltage
ramp has been set between 1.1V and 2.2V to
ensure proper 0% to 100% duty cycle capability.
The voltage loop also includes two other very
GH(GL)
10%
GL(GH)
2V
FALL TIME
2V
RISE TIME
90%
10%
important features. One is an asynchronous start
up mode. Basically, the GL driver cannot turn
on unless the GH driver has attempted to turn on
or the SS pin has exceeded 1.7V. This feature
prevents the controller from “dragging down”
the output voltage during startup or in fault
modes. The second feature is a 100% duty cycle
timeout that ensures synchronized refreshing of
V(BST)
GH
Voltage
V(SWN)
V(VCC)
GL
Voltage
NON-OVERLAP
the BST capacitor at very high duty ratios. In the
event that the GH driver is on for 20 continuous
clock cycles, a reset is given to the PWM flip
SWN
0V
V(VIN)
flop half way through the 21st cycle. This forces
GL to rise for the remainder of the cycle, in turn
refreshing the BST capacitor.
Voltage
-0V
-V(Diode) V
V(VIN)+V(VCC)
BST
Voltage
V(VCC)
TIME
Date:2/14/06
SP6132H High Voltage, Synchronous PWM Controller
6
? Copyright 2006 Sipex Corporation
相关PDF资料 |
PDF描述 |
|---|---|
| SP6133ER1-L/TR | IC REG CTRLR BUCK PWM VM 16-QFN |
| SP6134HEU-L | IC REG CTRLR BUCK PWM VM 10-MSOP |
| SP6136ER1-L/TR | IC REG CTRLR BUCK PWM VM 16-QFN |
| SP6137EU-L | IC REG CTRLR BUCK PWM VM 10-MSOP |
| SP6201EM5-G-3-3 | IC REG LDO 3.3V .2A SOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6132HEU-L/TR | 功能描述:电压模式 PWM 控制器 High Voltage, 300KHz Synchronous RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| SP6132HV | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Voltage Synchronous Buck Controller |
| SP6133 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6133_06 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6133EB | 功能描述:DC/DC 开关控制器 Synchronous Buck Controller 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 |
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