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參數(shù)資料
| 型號(hào)： | PM6652TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 |
| 文件頁數(shù)： | 32/53頁 |
| 文件大?。?/td> | 2519K |
| 代理商： | PM6652TR |
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Device description
PM6652
38/53
Doc ID 16867 Rev 3
the external MOSFET or the inductor, allows the controller monitoring the thermal status of
the power components (see Figure 40).
In application where this function is not required (in render core supply, for example) the
THERM pin must be connected to 5 V and VRTT# can be left floating.
Figure 40.
Voltage regulator thermal throttling
8.10.4
Overvoltage protection
The PM6652 can detect two kinds of VOUT overvoltage:
●
Fixed 1.55 V overvoltage threshold;
●
Variable +200 mV overvoltage threshold, referred to VDAC reference voltage.
Both overvoltage protections are latched, so a COREON or SVCC toggle is required in
order to restart the device.
If the fixed overvoltage threshold is reached, the high-side MOSFET is immediately turned-
off and the output capacitor is sharply discharged by turning-on the low-side MOSFET. This
fault protection is always active.
When a variable VOUT overvoltage is detected, both high-side and low-side external
MOSFETs are turned-off and the output capacitor soft-discharge is performed. The internal
discharge MOSFET is turned-on until VOUT is lower than about 100 mV, then the low-side
MOSFET is turned-on (see Figure 20 on page 22). This fault detection is masked during
VID transitions and, during soft-start, until the power good signal is released.
8.10.5
Undervoltage protection
If the switching voltage regulator output falls below -300 mV, referred to VDAC programmed
voltage, the latched under voltage fault is detected and the output capacitor soft-discharge is
performed. The internal discharge MOSFET is turned-on until VCC_GFX is lower than
about 100 mV, then the low-side MOSFET is turned-on (see Figure 21 on page 22). This
fault detection is masked during VID transitions and, during soft-start, until the power good
signal is released.
The under voltage protection can't be detected if the programmed VDAC voltage is lower
than 300 mV.
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| PM6670 | 制造商:STMicroelectronics 功能描述: |
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| PM6670ASTR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| PM6670ATR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| PM6670S | 功能描述:DC/DC 開關(guān)控制器 DDR 2/3 Memory Pwr Cntrl RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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