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| 型号： | L6716TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFQFP-48 |
| 文件页数： | 14/57页 |
| 文件大小： | 829K |
| 代理商： | L6716TR |
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L6716
DAC and Phase number selection
Doc ID 14521 Rev 3
21/57
7
DAC and Phase number selection
L6716 embeds VRD11.x DAC (see Table 7) that allows to regulate the output voltage with a
tolerance of ±0.5% recovering from offsets and manufacturing variations.
The device automatically introduces a -19 mV (both VRD11.x and VR10) offset to the
regulated voltage in order to avoid any external offset circuitry to worsen the guaranteed
accuracy and, as a consequence, the calculated system TOB.
Output voltage is programmed through the VID pins: they are inputs of an internal DAC that
is realized by means of a series of resistors providing a partition of the internal voltage
reference. The VID code drives a multiplexer that selects a voltage on a precise point of the
divider. The DAC output is delivered to an amplifier obtaining the voltage reference (i.e. the
set-point of the error amplifier, VREF).
L6716 implements a flexible 2 to 4 interleaved-phase converter. The device allows to select
the phase number operation simply using the PWM4/PHASE_SEL pin, as shown in the
following table.
Note:
PWM4 pin is internally pulled up by 10 A to 3.3 V, until soft-start is not finished.
For the disabled phase(s), the current reading pins need to be properly connected to avoid
errors in current-sharing and voltage-positioning: CSx+ needs to be connected to the
regulated output voltage while CSX- needs to be connected to VOUT trough the same RG
resistor used for the other phases.
Note:
To select VR10/VR11 table, short to SGND the OVP pin. In this case the PSI pin becomes
the VIDSEL pin (to select VR10 and VR11 table, in according to the VR11 specification).
Table 8.
Number of phases setting
PWM4 / PH_SEL pin
Number of phases
Phases used
Floating
2-PHASE
Phase1, Phase3
Short to SGND
3-PHASE
Phase1, Phase2, Phase3
Connect to PWM driver input
4-PHASE
Phase1, Phase2, Phase3, Phase4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6717 | 制造商:STMicroelectronics 功能描述:High-Efficiency Hybrid AM2r2 Controller 48-Pin VFQFPN Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717A | 制造商:STMicroelectronics 功能描述:CPU Power Supply Controller Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717ATR | 制造商:STMicroelectronics 功能描述:CPU Power Supply Controller T/R 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Tape and Reel 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717TR | 功能描述:开关变换器、稳压器与控制器 High-Efficienc AM2r2 Hybrid 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 |
| L6718TR | 功能描述:其他电源管理 Multiphase Dual PWM VR12 25MHz LTB RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
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