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IR3080 の電気的特性と機能

IR3080のメーカーはInternational Rectifierです、この部品の機能は「XPHASE VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT」です。


製品の詳細 ( Datasheet PDF )

部品番号 IR3080
部品説明 XPHASE VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT
メーカ International Rectifier
ロゴ International Rectifier ロゴ 




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IR3080 Datasheet, IR3080 PDF,ピン配置, 機能
Data Sheet No. PD94705
IR3080
XPHASETM VRD10 CONTROL IC WITH VCCVID & OVERTEMP DETECT
DESCRIPTION
The IR3080 Control IC combined with an IR XPhaseTM Phase IC provides a full featured and flexible way to
implement a complete VRD 10 power solution. The “Control” IC provides overall system control and
interfaces with any number of “Phase ICs” which each drive and monitor a single phase of a multiphase
converter. The XPhaseTM architecture results in a power supply that is smaller, less expensive, and easier
to design while providing higher efficiency than conventional approaches.
The IR3080 is intended for desktop applications and includes the VCCVID and VRHOT functions required
for proper system operation.
FEATURES
6 bit VR10 compatible VID with 0.5% overall system accuracy
1 to X phases operation with matching phase ICs
On-chip 700VID Pull-up resistors with VID pull-up voltage input
Programmable Dynamic VID Slew Rate
No Discharge of output capacitors during Dynamic VID step-down (can be disabled)
+/-300mV Differential Remote Sense
Programmable 150kHz to 1MHz oscillator
Programmable VID Offset and Load Line output impedance
Programmable Softstart
Programmable Hiccup Over-Current Protection with Delay to prevent false triggering
Simplified Powergood provides indication of proper operation and avoids false triggering
Operates from 12V input with 9.1V Under-Voltage Lockout
6.8V/5mA Bias Regulator provides System Reference Voltage
1.2V @ 150mA VCCVID Linear Regulator with Full Protection
VCCVID Powergood with Programmable delay gates converter operation
Programmable Converter Over-Temperature Detection and Output
Small thermally enhanced 32L MLPQ package
PACKAGE PIN OUT
1 VIDFB
2 VCCVID
3 VIDPWR
4 VID5
5 VID0
6 VID1
7 VID2
8 VID3
IR3080
CONTROL
IC
VCC
VBIAS
BBFB
EAOUT
FB
VDRP
IIN
OCSET
24
23
22
21
20
19
18
17
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IR3080 pdf, ピン配列
IR3080
ELECTRICAL SPECIFICATIONS
Unless otherwise
TJ 100 oC
specified,
these
specifications
apply
over:
9.5V
VCC
14V,
2.0V
VIDPWR
5.5V
and
0 oC
PARAMETER
TEST CONDITION
MIN TYP MAX UNIT
VDAC Reference
System Set-Point Accuracy
-0.3V VOSNS- 0.3V, Connect FB to
EAOUT, Measure V(EAOUT) –
V(VOSNS-) deviation from Table 1.
Applies to all VID codes.
0.5
%
Source Current
Sink Current
VID Input Threshold
RROSC = 41.9k
RROSC = 41.9k
68 80 92 µA
47 55 63 µA
500 600 700 mV
VID Pull-up Resistors
500 700 1000
Regulation Detect Comparator
Input Offset
-5 0
5 mV
Regulation Detect to EAOUT
Delay
130 200
ns
BBFB to FB Bias Current
Ratio
0.95 1.00 1.05 µA/µA
VID 11111x Blanking Delay
Measure time until PWRGD drives low
800
ns
VID Step Down Detect
Blanking Time
Measure from VID inputs to EAOUT
1.7 µs
VID Down BB Clamp Voltage Percent of VDAC voltage
70 75 80 %
VID Down BB Clamp Current
3.5 6.2 12 mA
Error Amplifier
Input Offset Voltage
Connect FB to EAOUT, Measure
V(EAOUT) – V(DAC). from Table 1.
Applies to all VID codes and -0.3V
VOSNS- 0.3V. Note 2
-3 4
8 mV
FB Bias Current
DC Gain
RROSC = 41.9k
Note 1
-31 -29.5 -28
90 100 105
µA
dB
Gain-Bandwidth Product
Note 1
47
MHz
Source Current
0.4 0.6 0.8 mA
Sink Current
0.7 1.2 1.7 mA
Max Voltage
VBIAS–VEAOUT (referenced to VBIAS) 125 250 375 mV
Min Voltage
Normal operation or Fault mode
30 100 150 mV
VDRP Buffer Amplifier
Input Offset Voltage
V(VDRP) – V(IIN), 0.8V V(IIN) 5.5V
-8
0
8 mV
Input Voltage Range
0.8 5.5 V
Bandwidth (-3dB)
Note 1
16
MHz
Slew Rate
10 V/µs
IIN Bias Current
-2.0 -0.75
0
µA
Page 3 of 41
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3Pages


IR3080 電子部品, 半導体
IR3080
PIN DESCRIPTION
PIN#
1
2
PIN SYMBOL
VIDFB
VCCVID
3 VIDPWR
4-9 VID0-5
10,
11,
13,14
12
15
TRM1-4
VOSNS-
ROSC
16 VDAC
17 OCSET
18 IIN
19 VDRP
20 FB
21 EAOUT
22 BBFB
23 VBIAS
24 VCC
25 LGND
26 RMPOUT
27 HOTSET
28 VRHOT
29 SS/DEL
30 PWRGD
31 VIDPGD
32 VIDDEL
PIN DESCRIPTION
Feedback to the VCCVID regulator. Connect to the VCCVID output.
1.2V/150mA Regulator Output. Can also drive external pass transistor to minimize
on-chip power dissipation
Power for VID Pull-up resistors and VCCVID Regulator
Inputs to VID D to A Converter. On-chip 700 ohm pull-up resistors to VIDPWR pin
are included.
Used for precision post-package trimming of the VDAC voltage. Do not make any
connection to these pins.
Remote Sense Input. Connect to ground at the Load.
Connect a resistor to VOSNS- to program oscillator frequency and FB, OCSET,
BBFB, and VDAC bias currents
Regulated voltage programmed by the VID inputs. Current Sensing and PWM
operation are referenced to this pin. Connect an external RC network to VOSNS- to
program Dynamic VID slew rate.
Programs the hiccup over-current threshold through an external resistor tied to
VDAC and an internal current source. Over-current protection can be disabled by
connecting this pin to a DC voltage no greater than 6.5V (do not float this pin as
improper operation will occur).
Current Sense input from the Phase IC(s). To ensure proper operation bias to at
least 250mV (don’t float this pin).
Buffered IIN signal. Connect an external RC network to FB to program converter
output impedance
Inverting input to the Error Amplifier. Converter output voltage is offset from the
VDAC voltage through an external resistor connected to the converter output voltage
at the load and an internal current source.
Output of the Error Amplifier
Input to the Regulation Detect Comparator. Connect to converter output voltage and
VDRP pin through resistor network to program recovery from VID step-down.
Connect to ground to diable Body BrakingTM during transition to a lower VID code.
6.8V/5mA Regulated output used as a system reference voltage for internal circuitry
and the Phase ICs
Power for internal circuitry
Local Ground and IC substrate connection
Oscillator Output voltage. Used by Phase ICs to program Phase Delay
Inverting input to VRHOT comparator. Connect resistor divider from VBIAS to LGND
to program VRHOT threshold. Diode or thermistor may be substituted for lower
resistor for enhanced/remote temperature sensing. Applying a voltage exceeding
approximately 7.5V disables the oscillator for factory testing.
Open Collector output of the VRHOT comparator. Connect external pull-up.
Controls Converter Softstart, Power Good, and Over-Current Delay Timing. Connect
an external capacitor to LGND to program the timing. An optional resistor can be
added in series with the capacitor to reduce the over-current delay time.
Open Collector output that drives low during Softstart and any external fault
condition. Connect external pull-up.
Open Collector output of the VCCVID Power Good circuitry. Connect external pull-
up.
Connect an external capacitor to LGND to program the VCCVID Power Good delay
Page 6 of 41
9/30/04

6 Page



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共有リンク

Link :


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