參數(shù)資料
型號(hào)： ISL6316CRZ-T
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： Quadruple 2-Input Exclusive-OR Gates 14-PDIP -40 to 85
中文描述： SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40
封裝： 6 X 6 MM, ROHS COMPLIANT, PLASTIC, MO-220-VJJD-2, QFN-40
文件頁(yè)數(shù)： 15/29頁(yè)
文件大?。?/td> 838K
代理商： ISL6316CRZ-T
15
FN9227.0
August 31, 2005
Channel current balance is essential in achieving the thermal
advantage of multiphase operation. With good current
balance, the power loss is equally dissipated over multiple
devices and a greater area.
Voltage Regulation
The compensation network shown in Figure 8 assures that
the steady-state error in the output voltage is limited only to
the error in the reference voltage (output of the DAC) and
offset errors in the OFS current source, remote-sense and
error amplifiers. Intersil specifies the guaranteed tolerance of
the ISL6316 to include the combined tolerances of each of
these elements.
The output of the error amplifier, V
COMP
, is compared to the
sawtooth waveform to generate the PWM signals. The PWM
signals control the timing of the Intersil MOSFET drivers and
regulate the converter output to the specified reference
voltage. The internal and external circuitry which control
voltage regulation is illustrated in Figure
8.
The ISL6316 incorporates an internal differential remote-sense
amplifier in the feedback path. The amplifier removes the
voltage error encountered when measuring the output voltage
relative to the local controller ground reference point resulting in
a more accurate means of sensing output voltage. Connect the
microprocessor sense pins to the non-inverting input, VSEN,
and inverting input, RGND, of the remote-sense amplifier. The
remote-sense output, V
DIFF
, is connected to the inverting input
of the error amplifier through an external resistor.
A digital-to-analog converter (DAC) generates a reference
voltage based on the state of logic signals at pins VID7
through VID0. The DAC decodes the 6-bit logic signal (VID)
into one of the discrete voltages shown in Table 1. Each VID
input offers a 45
μ
A pull-up to an internal 2.5V source for use
with open-drain outputs. The pull-up current diminishes to
zero above the logic threshold to protect voltage-sensitive
output devices. External pull-up resistors can augment the
pull-up current sources if case leakage into the driving device
is greater than 45
μ
A.
FIGURE 7. CHANNEL-1 PWM FUNCTION AND CURRENT-
BALANCE ADJUSTMENT
÷
N
I
AVG
I
4
*
I
3
*
I
2
Σ
-
+
+
-
+
-
f(j
ω
)
PWM1
I
1
V
COMP
SAWTOOTH SIGNAL
I
ER
NOTE: *Channels 3 and 4 are optional.
FILTER
FIGURE 8. OUTPUT VOLTAGE AND LOAD-LINE
REGULATION WITH OFFSET ADJUSTMENT
I
AVG
EXTERNAL CIRCUIT
R
C
C
C
ISL6316 INTERNAL CIRCUIT
COMP
R
FB
FB
VDIFF
VSEN
RGND
-
+
V
DROOP
ERROR AMPLIFIER
-
+
V
OUT
+
DIFFERENTIAL
REMOTE-SENSE
AMPLIFIER
V
COMP
REF
DAC
R
REF
C
REF
-
+
V
OUT
-
IDROOP
ISL6316
相關(guān)PDF資料
PDF描述
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ISL6401 Synchronizing Current Mode PWM for Subscriber Line Interface Circuits (SLICs)(用戶線接口電路(SLICs)專用同步電流模式PWM)
ISL6401CB-T Synchronizing Current Mode PWM for Subscriber Line Interface Circuits (SLICs)
ISL6401CB Quadruple 2-Input Exclusive-OR Gates 14-SO -40 to 85
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ISL6322CRZ-T 功能描述:IC CTRLR PWM 4PHASE BUCK 48-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
ISL6322GCRZ 功能描述:IC CTRLR PWM BUCK 48-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:控制器，DSP 輸入電壓:4.5 V ~ 25 V 輸出數(shù):2 輸出電壓:最低可調(diào)至 1.2V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:30-TFSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:30-TSSOP 包裝:帶卷 (TR)
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