FAN5093MTC Datasheet, PDF (4/17 Pages) Fairchild Semiconductor – Two Phase Interleaved Synchronous Buck Converter for VRM 9.x Applications

FAN5093
PRODUCT SPECIFICATION
Electrical Specifications
(VCC = 12V, VID = [01111] = 1.475V, and TA = +25°C using circuit in Figure 2, unless otherwise noted.)
The • denotes specifications which apply over the full operating temperature range.
Parameter
Input Supply
UVLO Hysteresis
12V UVLO
12V Supply Current
Internal Voltage Regulator
BYPASS Voltage
BYPASS Capacitor
VREF and DAC
Output Voltage
Initial Voltage Setpoint¹
Output Temperature Drift
Line Regulation
Droop²
Programmable Droop Range
Response Time
Current Mismatch
VID Inputs
Input LOW current, VID pins
VID VIH
VID VIL
Oscillator
Oscillator Frequency
Oscillator Range
Maximum Duty Cycle
Minimum LDRV on-time
Gate Drive
Gate Drive On-Resistance
Output Driver Rise & Fall Time
Enable/Soft Start
Soft Start Current
Enable Threshold
Power Good
PWRGD Threshold
PWRGD Output Voltage
PWRGD Delay
OVP and OTP
Output Overvoltage Detect
Over Temperature Shutdown
Over Temperature Hysteresis
Conditions
Rising Edge
PWM Output Open
See Table 1
ILOAD = 0A, VID = [01111]
TA = 0 to 70°C
VCC = 11.4V to 12.6V
ILOAD = 69A, RDROOP = 13.3kΩ
∆Vout = 10mV
RDS,on (A) = RDS,on (B),
ILOAD = 69A, Droop = 1mΩ
VVID = 0.4V
RT = 54.9kΩ
RT = 137.5kΩ to 13.75 kΩ
RT = 137.5kΩ
RT = 13.75kΩ
Sink & Source
See Figure 1, CL = 3000pF
ON
OFF
Logic LOW, VVID – VPWRGD
Isink = 4mA
High → Low
Min. Typ. Max. Units
• 8.5
0.5
V
9.5 10.3
V
20
mA
4.75
5
5.25
V
100
nF
• 1.100
1.460
•
0
1.475
5
130
56
100
1.850
1.490
1.25
5
V
V
mV
µV
mV
mΩ
nsec
%
-60
2.0
• 440
200
1.0
• 85
• 2.1
130
µA
V
0.8
V
500 560 kHz
2000 kHz
90
%
330
nsec
1.0
Ω
20
nsec
10
µA
V
0.4
88
92 %VOUT
0.4
V
500
µsec
2.2
2.3
V
140 150
°C
40
°C
Notes:
1. As measured at the converter’s VFB sense point. For motherboard applications, the PCB layout should exhibit no more than
0.5mΩ trace resistance between the converter’s output capacitors and the CPU. Remote sensing should be used for optimal
performance.
2. Using the VFB pin for remote sensing of the converter’s output at the load, the converter will be in compliance with VRM 9.x
specification.
4
REV. 1.1.0 3/27/03