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参数资料
| 型号： | MAX17006ETP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/24页 |
| 文件大小： | 0K |
| 描述： | IC MULTI-CHEM BATT CHRGR 20-TQFN |
| 标准包装： | 75 |
| 功能： | 充电管理 |
| 电池化学： | 多化学 |
| 电源电压： | 8 V ~ 26 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（4x4） |
| 包装： | 管件 |
1.2MHz Low-Cost,
High-Performance Chargers
L × I RIPPLE
t ON =
CC, CCI, CCS, and LVC Control Blocks
The MAX17005/MAX17006/MAX17015 control input
current (CCS control loop), charge current (CCI control
loop), or charge voltage (CC control loop), depending
on the operating condition. The three control loops, CC,
CCI, and CCS are brought together internally at the
lowest voltage clamp (LVC) amplifier. The output of the
LVC amplifier is the feedback control signal for the
DC-DC controller. The minimum voltage at the CC, CCI,
or CCS appears at the output of the LVC amplifier and
clamps the other control loops to within 0.3V above the
control point. Clamping the other two control loops
close to the lowest control loop ensures fast transition
with minimal overshoot when switching between differ-
ent control loops (see the Compensation section). The
CCS and CCI loops are compensated internally, and
the CC loop is compensated externally.
Continuous-Conduction Mode
With sufficiently large charge current, the MAX17005/
MAX17006/MAX17015s’ inductor current never crosses
zero, which is defined as continuous-conduction mode.
The controller starts a new cycle by turning on the high-
side MOSFET and turning off the low-side MOSFET.
When the charge-current feedback signal (CSI) is
greater than the control point (LVC), the CCMP com-
parator output goes high and the controller initiates the
off-time by turning off the high-side MOSFET and turn-
ing on the low-side MOSFET. The operating frequency
is governed by the off-time and is dependent upon
V CSIN and V DCIN .
The on-time can be determined using the following
equation:
V DCIN ? V BATT
At the end of the computed off-time, the controller initi-
ates a new cycle if the control point (LVC) is greater
than 10mV (V CSIP - V CSIN referred), and the charge
current is less than the cycle-by-cycle current limit.
Restated another way, IMIN must be high, IMAX must
be low, and OVP must be low for the controller to initi-
ate a new cycle. If the peak inductor current exceeds
IMAX comparator threshold or the output voltage
exceeds the OVP threshold, then the on-time is termi-
nated. The cycle-by-cycle current limit effectively pro-
tects against overcurrent and short-circuit faults.
If during the off-time the inductor current goes to zero,
the ZCMP comparator output pulls high, turning off the
low-side MOSFET. Both the high- and low-side
MOSFETs are turned off until another cycle is ready to
begin. ZCOMP causes the MAX17005/MAX17006/
MAX17015 to enter into the discontinuous conduction
mode (see the Discontinuous Conduction section).
Discontinuous Conduction
The MAX17005/MAX17006/MAX17015 can also operate
in discontinuous conduction mode to ensure that the
inductor current is always positive. The MAX17005/
MAX17006/MAX17015 enter discontinuous conduction
mode when the output of the LVC control point falls below
10mV (referred at V CSIP - V CSIN ). For RS2 = 10m Ω , this
corresponds to a peak inductor current of 1A.
In discontinuous mode, a new cycle is not started until
the LVC voltage rises above IMIN. Discontinuous mode
operation can occur during conditioning charge of
overdischarged battery packs, when the charge cur-
rent has been reduced sufficiently by the CCS control
loop, or when the charger is in constant-voltage mode
with a nearly full battery pack.
Compensation
I RIPPLE = BATT OFF
where:
V × t
L
The charge voltage, charge current, and input current-
limit regulation loops are compensated separately. The
charge current and input current-limit loops, CCI and
CCS, are compensated internally, whereas the charge
The switching frequency can then be calculated:
voltage loop is compensated externally at CC.
f SW =
1
t ON + t OFF
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17006ETP+ | 功能描述:电池管理 1.2MHz High-Perf Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17006ETP+T | 功能描述:电池管理 1.2MHz High-Perf Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17006EVKIT+ | 功能描述:电池管理 1.2MHz Low-Cost High-Performance Chargers RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17007AGTI+ | 功能描述:电压模式 PWM 控制器 QPWM Graphics Core Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17007AGTI+T | 功能描述:电压模式 PWM 控制器 QPWM Graphics Core Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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