参数资料
| 型号： | SP6132HEU-L |
| 厂商： | Exar Corporation |
| 文件页数： | 4/14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 |
FUNCTIONAL DIAGRAM
5 COMP
100% Protection Logic
PULSES CLR
FAULT
VCC
PWM LOOP
COUNT 20
CLOCK
CLK
10 BST
VFB
VCC
VFBINT
VCC
Gm ERROR AMPLIFIER
Gm
VPOS
FAULT
FAULT
RESET
DOMINANT
R
QPWM
Q
S
SYNCHRONOUS
DRIVER
9 GH
8 SWN
2 GL
10 μ A
SS 7
SOFTSTART INPUT
POS REF
300 kHZ
FAULT
RAMP = 1.1V
0.4 V
CLK
CLOCK PULSE GENERATOR
SS
GL HOLD OFF
V CC 1
REFERENCE
CORE
0.8V
REF OK
1.7 V
1.7 V
ASYNC. STARTUP
3 GND
COMPARATOR
145 ?C ON
135 ?C OFF
THERMAL
SHUTDOWN
SET
DOMINANT
S
VPOS
0.25 V
+-
SHORT CIRCUIT
DETECTION
+
Q
HICCUP FAULT
REF OK
FAULT
VFBINT
-
R
VCC
+
4.25 V ON
4.05 V OFF -
VCC UVLO
POWER FAULT
+
CLK
6
2.50 VON
2.20 V OFF
-
VIN UVLO
COUNTER
200ms Delay
UVIN
CLR
REF OK
THERMAL AND SHORT CIRCUIT PROTECTION
UVLO COMPARATORS
THEORY OF OPERATION
General Overview
The SP6132H is a fixed frequency, voltage
mode, synchronous PWM controller optimized
for high efficiency. The part has been designed
to be especially attractive for split plane applica-
tions which utilize 5V to power the controller
and 3V to 12V for step down conversion.
The heart of the SP6132H is a wide bandwidth
transconductance amplifier designed to accom-
modate Type II and Type III compensation
schemes. A precision 0.8V reference present on
the positive terminal of the error amplifier per-
mits the programming of the output voltage
down to 0.8V via the V FB pin. The output of the
error amplifier, COMP, compared to a 1.1V
peak-to-peak ramp is responsible for trailing
edge PWM control. This voltage ramp and PWM
control logic are governed by the internal oscil-
lator that accurately sets the PWM frequency to
300kHz.
The SP6132H contains two unique control fea-
tures that are very powerful in distributed appli-
cations. First, asynchronous driver control is
enabled during start up to prohibit the low side
NFET from pulling down the output until the
high side NFET has attempted to turn on. Sec-
ond, a 100% duty cycle timeout ensures that the
low side NFET is periodically enhanced during
extended periods at 100% duty cycle. This guar-
antees the synchronized refreshing of the BST
capacitor during very large duty ratios.
The SP6132H also contains a number of valu-
able protection features. A programmable input
(V IN ) UVLO allows a user to set the exact value
at which the conversion voltage is at a safe point
to begin down conversion, and an internal V CC
UVLO ensures that the controller itself has
enough voltage to properly operate. Other pro-
Date:2/14/06
SP6132H High Voltage, Synchronous PWM Controller
4
? Copyright 2006 Sipex Corporation
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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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