- 您現在的位置：買賣IC網 > PDF目錄384422 > HIP6004CB (HARRIS SEMICONDUCTOR) Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor PDF資料下載
參數資料
| 型號： | HIP6004CB |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor |
| 中文描述： | SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO20 |
| 文件頁數： | 10/12頁 |
| 文件大?。?/td> | 211K |
| 代理商： | HIP6004CB |
10
Figure 10 shows the upper gate drive (BOOT pin) supplied
by a bootstrap circuit from V
CC
. The boot capacitor, C
BOOT
develops a floating supply voltage referenced to the PHASE
pin. This supply is refreshed each cycle to a voltage of VCC
less the boot diode drop (V
D
) when the lower MOSFET, Q2
turns on. Logic-level MOSFETs can only be used if the
MOSFETs absolute gate-to-source voltage rating exceeds
the maximum voltage applied to V
CC
.
Figure 11 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 +5V
DC
or
less. The peak upper gate-to-source voltage is approximately
V
CC
less the input supply. For +5V main power and +12VDC
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 V
CC
.
Schottky Selection
Rectifier D2 is a clamp that catches the negative inductor
swing during the dead time between turning off the lower
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
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.
+12V
PGND
HIP6004
GND
LGATE
UGATE
PHASE
BOOT
VCC
+5V or +12V
NOTE:
V
G-S
≈
V
CC
-V
D
NOTE:
V
G-S
≈
V
CC
C
BOOT
D
BOOT
Q1
Q2
+
-
FIGURE 10. UPPER GATE DRIVE - BOOTSTRAP OPTION
D2
+ V
D
-
+12V
PGND
HIP6004
GND
LGATE
UGATE
PHASE
BOOT
V
CC
+5V OR LESS
NOTE:
V
G-S
≈
V
CC
-5V
NOTE:
V
G-S
≈
V
CC
Q1
Q2
+
-
IGURE 11. UPPER GATE DRIVE - DIRECT V
CC
DRIVE OPTION
D2
HIP6004
相關PDF資料 |
PDF描述 |
|---|---|
| HIP6005A | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor(脈沖帶寬調節(jié)控制和輸出電壓檢測電路) |
| HIP6005ACB | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| HIP6005B | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| HIP6005BCB | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
| HIP6005BCV | Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HIP6004CB WAF | 制造商:Harris Corporation 功能描述: |
| HIP6004CBR4543 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HIP6004CB-T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HIP6004CBTS | 制造商:HARRIS 功能描述:* |
| HIP6004D | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor |
發(fā)布緊急采購，3分鐘左右您將得到回復。