参数资料
| 型号： | HIP6012CB |
| 厂商： | Intersil |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM SYNC BUCK 14-SOIC |
| 标准包装： | 50 |
| 应用： | 控制器，Intel Pentium? Pro、PowerP、Alpha |
| 输入电压： | 5V，12V |
| 输出数： | 1 |
| 输出电压： | 1.3 V ~ 12 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | * |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | * |
| 包装： | 管件 |
HIP6012
These equations assume linear voltage-current transitions
and do not adequately model power loss due the reverse-
recovery of the lower MOSFETs body diode. The
gate-charge losses are dissipated by the HIP6012 and don't
heat the MOSFETs. However, large gate-charge increases
the switching interval, t SW which increases the upper
MOSFET switching losses. Ensure that both MOSFETs are
within their maximum junction temperature at high ambient
temperature by calculating the temperature rise according to
package thermal-resistance specifications. A separate
heatsink may be necessary depending upon MOSFET
power, package type, ambient temperature and air flow.
Standard-gate MOSFETs are normally recommended for
use with the HIP6012. However, logic-level gate MOSFETs
Figure 10 shows the upper gate drive supplied by a direct
connection to V CC . This option should only be used in
converter systems where the main input voltage is +5 VDC
or less. The peak upper gate-to-source voltage is
approximately VCC less the input supply. For +5V main
power and +12 VDC for the bias, the gate-to-source voltage
of Q1 is 7V. A logic-level MOSFET is a good choice for Q1
and a logic-level MOSFET can be used for Q2 if its absolute
gate-to-source voltage rating exceeds the maximum voltage
applied to PVCC.
+12V
+5V OR LESS
VCC
can be used under special circumstances. The input voltage,
upper gate drive level, and the MOSFETs absolute gate-to-
HIP6012
BOOT
source voltage rating determine whether logic-level
MOSFETs are appropriate.
Figure 9 shows the upper gate drive (BOOT pin) supplied by
a bootstrap circuit from V CC . The boot capacitor, C BOOT
UGATE
PHASE
+5V
OR +12V
PVCC
Q1
NOTE:
V G-S ≈ V CC - 5V
develops a floating supply voltage referenced to the PHASE
pin. This supply is refreshed each cycle to a voltage of V CC
less the boot diode drop (V D ) when the lower MOSFET, Q2
-
+
LGATE
PGND
Q2
D2
NOTE:
V G-S ≈ PVCC
turns on. A logic-level MOSFET can only be used for Q1 if
the MOSFETs absolute gate-to-source voltage rating
exceeds the maximum voltage applied to V CC . For Q2, a
logic-level MOSFET can be used if its absolute gate-to-
source voltage rating exceeds the maximum voltage applied
to PVCC.
GND
FIGURE 10. UPPER GATE DRIVE - DIRECT V CC DRIVE OPTION
Schottky Selection
+12V
D BOOT
Rectifier D2 is a clamp that catches the negative inductor
swing during the dead time between turning off the lower
VCC
+
VO
-
+5V OR +12V
MOSFET and turning on the upper MOSFET. The diode must
be a Schottky type to prevent the lossy parasitic MOSFET
body diode from conducting. It is acceptable to omit the diode
HIP6012
BOOT
UGATE
PHASE
C BOOT
Q1
NOTE:
V G-S ≈ V CC - V D
and let the body diode of the lower MOSFET clamp the
negative inductor swing, but efficiency will drop one or two
percent as a result. The diode's rated reverse breakdown
voltage must be greater than the maximum input voltage.
+5V
PVCC OR +12V
-
+
LGATE
PGND
Q2
D2
NOTE:
V G-S ≈ PVCC
GND
FIGURE 9. UPPER GATE DRIVE - BOOTSTRAP OPTION
9
FN4324.2
December 27, 2004
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HIP6012CBS2462 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HIP6012CB-T | 功能描述:IC CTRLR PWM SYNC BUCK 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| HIP6012CBZ | 功能描述:电压模式 PWM 控制器 SYNC BUCK PWM/1 5%/14 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 |
| HIP6012CBZ-T | 功能描述:电压模式 PWM 控制器 SYNC BUCK PWM/1 5%/14 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 |
| HIP6012CV | 功能描述:IC CTRLR PWM SYNC BUCK 14-TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
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