收藏本站
BD6592MUV
Datasheet
● Description of Functions
1) PWM current mode DC/DC converter
While BD6592MUV is power ON, the lowest voltage of LED1, 2, 3, 4, 5, 6 is detected, PWM duty is decided to be 0.5V
and output voltage is kept invariably. As for the inputs of the PWM comparator as the feature of the PWM current mode,
one is overlapped with error components from the error amplifier, and the other is overlapped with a current sense signal
that controls the inductor current into Slope waveform to prevent sub harmonic oscillation. This output controls external
Nch Tr via the RS latch. In the period where external Nch Tr gate is ON, energy is accumulated in the external inductor,
and in the period where external Nch Tr gate is OFF, energy is transferred to the output capacitor via external SBD.
BD6592MUV has many safety functions, and their detection signals stop switching operation at once.
2) Soft start
BD6592MUV has soft start function.
The soft start function prevents large coil current.
Rush current at turning on is prevented by the soft start function.
After RSTB is changed L ? H, when PWMPOW is changed L ? H, soft start becomes effective for within 1ms and soft
start doesn't become effective even if PWMPOW is changed L ? H after that.
And, when the H section of PWMPOW is within 1ms, soft start becomes invalid when PWMPOW is input to H more than
three times. The invalid of the soft start can be canceled by making RSTB ? L.
3) FAILSEL pin
When the error condition occurs, boost operating is stopped by the protection function, and the error condition is avoided.
On that occasion, the way to stop of boost operating by the protection function can be selected with FAILSEL pin. Details
are as shown in Figure 31, Figure 32.
After power ON, when the protection function is operating under about 1ms have passed, the stop state of the boost
operating can be held through FAILSEL is H, the stop state can reset through RSTB is L.
And, boost operating is stopped when the protection function is operating through FAILSEL is L, but when the protection
function becomes un-detect, boost operating is started again. It never keeps holding the stop state of boost operating.
In PWM control by PWMDRV can’t use this function.
When it is off over 10ms on PWM control by PWMPOW using this function, it may be stopped the boost
operating as over current protection work at off on PWMPOW=L.
Object of protect function is as shown below.
? Over-voltage protection
? External SBD open detect
? Thermal shutdown
? LED terminal over-voltage protection
? Over current limit
< When it is off on PWMPOW>
<FAILSEL=H>
RSTB
RSTB
PWMDRV
FAILSEL
“H”
about 1ms
un-operating range
PWMPOW
Output
voltage
Protection
function
un-detection
detection
un-detection
Coil current
Boost
operating
off
normal operating
boost stop
off
normal operating
FAILSEL
function
invalid
valid
<FAILSEL=L>
RSTB
about 1ms
< When it is off on RSTB>
RSTB
PWMDRV
FAILSEL
“L”
un-operating range
PWMPOW
Output
Protection
function
un-detectio
detection
un-detection
voltage
Coil current
Boost
operating
off
normal operating
boost stop
normal
operating
off
normal
FAILSEL
function
invalid
Figure 31. FAILSEL operating description
Figure 32. FAILSEL=H light off control
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
12 / 31
TSZ02201-0G3G0C400210-1-2
21.Dec.2012 Rev.001
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
BD7844AEFV-E2 IC LED DISPLAY DVR 5V 28-HTSSOP
BD8105FV-E2 IC LED DVR SERIAL PAR 20-SSOP
BD8112EFV-ME2 IC LED DRIVER 24-VSSOP
BD8119FM-ME2 IC WHITE LED DVR PWM 28-HSOP
BD82103GWL-E2 IC LED DRVR WHITE BCKLGT 11-UCSP
BD9206EFV-E2 IC LED DRIVER 6V LCD 20HTSSOP
BD9207FPS-E2 IC LED DVR STEPDWN 1.5A TO252S-5
BH-14E_TI-20T_CTI ADAPTER PIN CONVERTER 14-20 PIN
相关代理商/技术参数
BD65B60GWL-E2 功能描述:LED 驱动器 IC 2 输出 DC DC 稳压器 升压（升压） PWM 调光 25mA UCSP50L1 制造商:rohm semiconductor 系列:- 包装:剪切带（CT） 零件状态:有效 类型:DC DC 稳压器 拓扑:升压（升压） 内部开关:是 输出数:2 电压 - 供电（最低）:2.7V 电压 -?供电（最高）:5.5V 电压 - 输出:28.5V 电流 - 输出/通道:25mA 频率:600kHz ~ 1.1MHz 调光:PWM 应用:背光 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:12-UFBGA，CSPBGA 供应商器件封装:UCSP50L1 标准包装:1
BD65D00MUV-E2 功能描述:LED 驱动器 IC 4 输出 DC DC 稳压器 升压（升压） 模拟，PWM 调光 100mA VQFN028V5050 制造商:rohm semiconductor 系列:- 包装:剪切带（CT） 零件状态:有效 类型:DC DC 稳压器 拓扑:升压（升压） 内部开关:是 输出数:4 电压 - 供电（最低）:4.5V 电压 -?供电（最高）:27V 电压 - 输出:41V 电流 - 输出/通道:100mA 频率:1.25MHz 调光:模拟，PWM 应用:背光 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:28-VFQFN 裸露焊盘 供应商器件封装:VQFN028V5050 标准包装:1
BD6603KVT 制造商:ROHM 制造商全称:Rohm 功能描述:5ch Sensorless System Motor Driver for MD
BD6603KVT_11 制造商:ROHM 制造商全称:Rohm 功能描述:Silicon Monolithic Integrated Circuit
BD6607KN 制造商:ROHM 制造商全称:Rohm 功能描述:System Motor Driver for Portable MD
BD6607KN_11 制造商:ROHM 制造商全称:Rohm 功能描述:Silicon Monolithic Integrated Circuit
BD6607KN-E2 功能描述:马达/运动/点火控制器和驱动器 MOTOR DRVR2.4V 64PIN RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube
BD6609FV 制造商:ROHM 制造商全称:Rohm 功能描述:Spindle Motor Driver for CD/MD