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参数资料
| 型号： | FAN7532MX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER BALLAST 16-SOIC |
| 标准包装： | 1 |
| 类型： | 镇流器控制器 |
| 频率： | 48 ~ 52 kHz |
| 电流 - 电源： | 6.4mA |
| 电流 - 输出： | 500mA |
| 电源电压： | 11 V ~ 15.6 V |
| 工作温度： | -25°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 标准包装 |
| 产品目录页面： | 1216 (CN2011-ZH PDF) |
| 其它名称： | FAN7532MXDKR |
Application Information
1. Start-up Circuit
The start-up current is supplied to the IC through the
start-up resistor (Rst). To reduce the power dissipation in
Rst, Rst is connected to the full-wave, rectified output
voltage. The size of Rst can be determined by equations
(1) and (2).
DC 400V
3. Oscillator
The gate drive output frequency is half that of the trian-
gular waveform on timing capacitor (CT) at pin #6. In
normal operating mode, the timing capacitor charging
current is 4?Irt (=Vref/RT). The discharging current is 6.2
times the charging current. During the charging period of
the timing capacitor (CT), the MOSFET alternatively
turns on. During the discharging period of the timing
capacitor (CT), both MOSFETs are off.
Rectifier
Output
M1
G1
Charging
Period ( Δ T CH )
Discharging
Period ( Δ T DIS )
Vref
Rst
I CH
I DIS =6.2 ? I CH
I CH
Vcc
D2
CQ
V CT
3.45V
CT
I DIS
Cs
ZD1
D1
G2
LO
M2
HO
FAN7532 Rev. 00
Dead Time
FAN7532 Rev. 00
Figure 15. Start-up Circuit
Figure 16. CT & Output Waveforms
R st =
V in(ac) × 2 -V th(st).max
I st,max
(1)
The FAN7532 has three operating modes according to
V CPH , as shown in Figure 17.
=
85 × 2 -12.4
0.18 × 10 -3
=599 [k ? ]
Vcc
R st =
(V in(ac,max) × 2 -V cc ) 2
R st
≤ 0.5 [W]
(2)
Vth(st)
t
R st ≥ 2 × ( V in ( ac ,max) × 2 ? V cc ) 2
≥ 260 [ k Ω ]
∴ 260[ k Ω ] ≤ R st ≤ 599[ k Ω ]
The size of supply capacitor (Cs) is normally determined
V CPH
5V
2.9V
I CPHL =1.5mA
I CPHH =10mA
by the start-up time and the operating current which is
built up by the auxiliary operating current source. The
t
turn-off snubber capacitor (CQ) and two diodes (D1, D2)
constitute the auxiliary operating current source for the
IC. The charging current through the CQ flows into the IC
and charges the supply capacitor. If the size of CQ is
increased, the V CC voltage on the Cs is also increased.
2. Under-Voltage Lockout (UVLO)
f
f pre
f run
f pre
f ign
f run
t
The UVLO mode of the FAN7532 is designed to maintain
an ultra low supply current of less than 120μA, and to
preheating
t ph
ignition
t sw
run
FAN7532 Rev. 00
guarantee that the IC is fully functional before two output
drivers are activated.
? 2006 Fairchild Semiconductor Corporation
FAN7532 Rev. 1.0.2
9
Figure 17. Operating Modes
www.fairchildsemi.com
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相关代理商/技术参数 |
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| FAN7535 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:PFC & Ballast Control IC |
| FAN7535M | 功能描述:功率因数校正 IC Half-bridge Gate RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| FAN7535MX | 功能描述:开关变换器、稳压器与控制器 Electronic Ballast PFC Combo IC RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| FAN7544 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Simple Ballast Controller |
| FAN7544M | 功能描述:开关变换器、稳压器与控制器 Electronic Ballast Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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