- 电话：0755-82549943
- 手机：15919934827,13714022523
- 在线QQ:424539538,337642193,380399088
- 传真：0755-82549943
- 地址：中国 广东 深圳市 福田区中航路新亚洲电子城4B025a室
产品分类
联系我们
电源IC(OB2263MP)
- 联系人： 王先生/陈小姐/陈先生
- 电 话： 0755-82549943
- 手 机:15919934827,13714022523
- E-mail：qixiudz@163.com
| 产品详细信息 | |||
| 型号： | OB2263MP | 品牌/商标： | ON-BRIGHT |
| 生产厂家： | 台湾 | 产品类别： | IC- AC-DC芯片 |
| 商品介绍： |
GENERAL DESCRIPTION OB2263 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in sub 30W range. PWM switching frequency at normal operation is externally programmable and trimmed to tight range. At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss. Lower standby power and higher conversion efficiency is thus achieved. VDD low startup current and low operating current contribute to a reliable power on startup design with OB2263. A large value resistor could thus be used in the startup circuit to minimize the standby power. The internal slope compensation improves system large signal stability and reduces the possible subharmonic oscillation at high PWM duty cycle output. Leading-edge blanking on current sense(CS) input removes the signal glitch due to snubber circuit diode reverse recovery and thus greatly reduces the external component count and system cost in the design. OB2263 offers complete protection coverage with automatic self-recovery feature including Cycle-by- Cycle current limiting (OCP), over load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO). The Gate-drive output is clamped to maximum 18V to protect the power MOSFET. Excellent EMI performance is achieved with On- Bright proprietary frequency shuffling technique together with soft switching control at the totem pole gate drive output. |
||