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參數(shù)資料
| 型號： | HIP6005B |
| 廠商： | Intersil Corporation |
| 英文描述： | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| 中文描述： | 降壓脈寬調(diào)制（PWM）控制器和輸出電壓監(jiān)視器 |
| 文件頁數(shù)： | 10/11頁 |
| 文件大?。?/td> | 151K |
| 代理商： | HIP6005B |
2-119
Schottky Selection
Rectifier D
2
conducts when the upper MOSFET Q
1
is off. The
diode should be a Schottky type for low power losses. The
power dissipation in the Schottky rectifier is approximated by:
In addition to power dissipation, package selection and
heat-sink requirements are the main design tradeoffs in
choosing the schottky rectifier. Since the three factors are
interrelated, the selection process is an iterative procedure.
The maximum junction temperature of the rectifier must
remain below the manufacturer’s specified value, typically
125
o
C. By using the package thermal resistance specification
and the schottky power dissipation equation (shown above),
the junction temperature of the rectifier can be estimated. Be
sure to use the available airflow and ambient temperature to
determine the junction temperature rise.
+12V
HIP6005B
GND
UGATE
PHASE
BOOT
VCC
+5V OR +12
NOTE: V
G-S
≈
V
CC
- V
D
.
FIGURE 9. UPPER GATE DRIVE - BOOTSTRAP OPTION
(NOTE)
C
BOOT
D
BOOT
Q
1
D
2
+
-
+ V
D
-
+12V
HIP6005B
GND
UGATE
PHASE
BOOT
VCC
+5V OR LESS
Q
1
+
-
FIGURE 10. UPPER GATE DRIVE - DIRECT V
CC
DRIVE OPTION
D
2
NOTE:
V
G-S
≈
V
CC
-5V
P
COND
= I
0
x V
f
x (1 - D)
Where: D is the duty cycle = V
OUT
/ V
IN
, and
V
f
is the Schottky forward voltage drop.
HIP6005B
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HIP6005BCB | 制造商:Rochester Electronics LLC 功能描述:PWM CONTROLLER 3.5 TO 1.3V DAC RANGE,20LD SOIC - Bulk |
| HIP6005BCB WAF | 制造商:Harris Corporation 功能描述: |
| HIP6005BCB-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| HIP6005BCV | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| HIP6005BCV-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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