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參數(shù)資料
| 型號： | HIP6005A |
| 廠商： | Intersil Corporation |
| 英文描述： | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor(脈沖帶寬調(diào)節(jié)控制和輸出電壓檢測電路) |
| 中文描述： | 降壓脈寬調(diào)制（PWM）控制器和輸出電壓監(jiān)視器（脈沖帶寬調(diào)節(jié)控制和輸出電壓檢測電路） |
| 文件頁數(shù)： | 11/12頁 |
| 文件大小： | 153K |
| 代理商： | HIP6005A |
2-108
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 trade-offs in choosing
the schottky rectifier. Since the three factors are interrelated,
the selection process is an iterative procedure. The maxi-
mum 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 schot-
tky 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
HIP6005A
GND
UGATE
PHASE
BOOT
V
CC
+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
HIP6005A
GND
UGATE
PHASE
BOOT
V
CC
+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
HIP6005A
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相關代理商/技術參數(shù) |
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|---|---|
| HIP6005ACB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HIP6005ACB-T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HIP6005B | 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 |
| 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: |
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