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參數(shù)資料
| 型號： | FAN5109 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Dual Bootstrapped 12V MOSFET Driver |
| 中文描述： | 雙12V的自舉MOSFET驅(qū)動器 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大小： | 119K |
| 代理商： | FAN5109 |
2
www.fairchildsemi.com
FAN5109 Rev. 1.0.4
F
Typical Application
Figure 1. Typical Application
Pin Configuration
Figure 2. 8-Pin SOIC Package
Pin Definitions
Pin #
Pin Name
Pin Function Description
1
BOOT
Bootstrap Supply Input.
Connect to bootstrap capacitor and diode.
PWM Signal Input.
Accepts a logic-level PWM signal from the controller.
Output Disable.
When low, this pin disables FET switching (HDRV and LDRV are
held low).
Power Input
. +12V bias power. Bypass with a 1μF ceramic capacitor.
Low Side Gate Drive Output.
Connect to the gate of the low-side power MOSFET(s).
Power Ground.
Connect directly to the source of low-side MOSFET(s) and C
Switch Node Input
. Connect as shown in Figure 1. SW provides return for the high-side
bootstrapped driver and acts as a sense point for the adaptive shoot-thru protection.
Provides voltage supply to the high-side MOSFET driver.
2
PWM
3
OD
4
VCC
5
LDRV
6
PGND
VCC.
7
SW
8
HDRV
High Side Gate Drive Output
.
Connect to the gate of the high-side power MOSFET(s).
SW
FAN5109
12V
VCC
OVERLAP
PROTECTION
CIRCUIT
6
5
7
8
1
PWM
2
BOOT
VCC
4
Q1
Q2
L1
3
HDRV
LDRV
PGND
OD
C
BOOT
V
OUT
C
OUT
C
VCC
D1
BOOT
PWM
OD
VCC
FAN5109
1
2
3
4
8
7
6
5
HDRV
SW
PGND
LDRV
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