Datasheet > MP86883

MP86883

更新时间： 2024-04-09 19:03:24

品牌	Logo	应用领域
芯源 - MPS		栅极驱动
页数	文件大小	规格书
14页	754K
描述
集成上下管 FET 和栅极驱动的 55A, 14V Intelli-Phase 解决方案，采用 6x6(mm) FC-TQFN 封装

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数据手册

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MP86883 数据手册

MP86883 – INTELLI-PHASE SOLUTION IN 6x6mm TQFN

OPERATION

The MP86883 is a 55A monolithic half-bridge

driver with MOSFETs ideally suited for multi-

phase buck regulators.

The CS voltage range of 1V to 3.5V is required to

keep CS’s output current linearly proportional to

inductor current. Use the following equations to

determine a proper reference voltage and/or R_CS

value:

When the EN transitions from low to high and

both V_DDand V_BSTsignals are sufficiently high,

operation begins. It is recommended to use EN

pin to startup and shutdown the Intelli-Phase.

1V  I_CSR_CS V_REF 3.5V

I_CS I_L1010^6

To put SW node in a high impedance state, let

PWM pin float or drive PWM pin to mid-state.

Drive the SYNC pin low to enter diode emulation

mode. In diode emulation mode, the LSFET is

off after inductor current crossed zero current.

Intelli-Phase’s current sense output can be used

by controller to accurately monitor the output

current. The cycle-by-cycle current information

from CS pin can be used for phase current

balancing, over current protection and active

voltage positioning (output voltage droop).

Intelli-Phase’s accurate current sense can

replace traditional inductor DCR current sensing

scheme. In traditional inductor DCR current

sense:

When HSFET over current is detected, the part

will latch off. Recycling Vdd or toggling EN will

release the latch and restart the device. When

the LSFET detects a -30A current, the part will

turn off the LSFET for that cycle.

When Intelli-Phase detects over temperature, it

will turn off both HS and LS MOSFET and latch

off. Toggle Vdd or EN to restart the device.

V_CS I_LR_DCR

With Intelli-Phase’s CS output, V_CSbecomes:

V_CS I_CSR_CS I_LR_CS1010^6

Current Sense

The CS pin is a bi-directional current source

proportional to the inductor current. Use the

following equations to select the RIN resistance

to connect between RIN pin and IN pin:

Where

the

R_DCR

term

replaced

with R_CS1010^6. Figure 2 shows a circuit

replacing inductor DCR sensing with Intelli-

Phase’s CS output. There are several

advantages with this current sensing method:

R_IN 7.55I_{L_RIPPLE}170(k)

t_ON(V  V_OUT

)

V_OUT(V  V_OUT

)

I_{L_RIPPLE}



1. Since current sensing is done by Intelli-

Phase, user can select low DCR

inductors and still have large current

sense signal by selecting larger R_CS.

V F_SWL

Where I_{L_RIPPLE}is the peak to peak inductor ripple

current. For example, if the ripple current is 10A,

then the calculated R_INis 94.5kΩ and 95.3kΩ (the

closest 1% resistor value) should be selected for

R_IN.

2. Tight DCR variation is not required.

3. CS signal is independent of impedance

matching and inductor temperature.

The current sense gain is 10μA/A. In general,

there is a resistor, R_CS, connected from CS pin

and V_OUTor an external voltage which is capable

to sink small current to provide enough voltage

shift to meet the operating voltage on CS pin.

MP86883 Rev. 1.0

8/31/2020

www.MonolithicPower.com

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

1...6 7 8910 11 12...14

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与MP86883相关器件

型号	品牌	获取价格	描述	数据表
MP86884	MPS	获取价格	55A，14V智能相位解决方案，具有集成HS/LS FET、驱动器以及5V PWM逻辑，并
MP86884-3	MPS	获取价格	55A，14V智能相位解决方案，具有集成HS/LS FET、驱动器以及3.3V PWM逻辑
MP86884-3DQKT-LF-Z	MPS	获取价格	Buffer/Inverter Based MOSFET Driver
MP86884E	MPS	获取价格	55A、14V 智能相位解决方案（集成 HS/LS FET 和驱动器），带 3.3V PW
MP86885	MPS	获取价格	40A，14V Intelli-phase解决方案，集成上下管FET和驱动器并采用4mmx
MP86905	MPS	获取价格	集成上管/下管和驱动器的 Intelli-PhaseTM解决方案
MP86905GR	MPS	获取价格	Peripheral Driver,
MP86905GR-Z	MPS	获取价格	Peripheral Driver,
MP86912C	MPS	获取价格	28V,?25A Intelli-PhaseTM 解决方案，采用LGA?(3mmx4mm)
MP86920	MPS	获取价格	Intelli-Phase? 解决方案，集成 HS-FET、LS-FET 和驱动器并采用L

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