参数资料
| 型号： | HIP6012CV-T |
| 厂商： | Intersil |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM SYNC BUCK 14-TSSOP |
| 标准包装： | 2,500 |
| 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-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | * |
| 包装： | 带卷 (TR) |
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
相关PDF资料 |
PDF描述 |
|---|---|
| HIP6013CB-T | IC CONTROLLER PWM BUCK 14-SOIC |
| HIP6301CB | IC REG CTRLR BUCK PWM 20-SOIC |
| HIP6302CB | IC REG CTRLR BUCK PWM 16-SOIC |
| HIP6302VCB-T | IC REG CTRLR BUCK PWM 16-SOIC |
| HIP6303CB-T | IC REG CTRLR BUCK PWM 20-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HIP6012CVZ | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller |
| HIP6012EVAL1 | 功能描述:电源管理IC开发工具 DISK DRIVE SUPPLY EVAL BRD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| HIP6013 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Buck Pulse-Width Modulator (PWM) Controller |
| HIP6013_05 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Buck Pulse-Width Modulator (PWM) Controller |
| HIP6013CB | 功能描述:电流型 PWM 控制器 Buck PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
发布紧急采购，3分钟左右您将得到回复。