MAX5037 MAXIM [Maxim Integrated Products], MAX5037 Datasheet - Page 9

• Manufacturer Part Number: MAX5037
• Description: VRM 9.0, Dual-Phase, Parallelable, Average Current-Mode Controller
• Manufacturer: MAXIM [Maxim Integrated Products]

21, 33, 37
5, 20, 35
1–4, 44
16, 39
17, 40
22, 34
23, 32
7, 43
PIN
10
11
12
13
14
15
18
19
6
8
9
CSP1, CSP2
CLP1, CLP2 Current-Error Amplifier Output. Compensate the current loop by connecting an R-C network to ground.
BST1, BST2
VID3–VID0,
DH1, DH2
OVPOUT
SENSE+
PGOOD
SENSE-
EAOUT
OVPIN
NAME
CSN1,
SGND
CSN2
CNTR
VID4
DIFF
REG
EAN
N.C.
EN
_______________________________________________________________________________________
DAC Code Inputs. VID0 is the LSB and VID4 is the MSB for the internal 5-bit DAC (Table 1). Connect to
SGND for logic low or leave open circuit for logic high. These inputs have 12k internal pullup
resistors to an internal 3V regulator.
Signal Ground. Ground connection for the internal circuitry. QFN package exposed pad connected to
SGND.
Overvoltage Protection Circuit Input. Connect DIFF to OVPIN. When OVPIN exceeds +13% above the
VID programmed output voltage, OVPOUT latches DH_ low and DL_ high. Toggle EN low to high or
recycle the power to reset the latch.
Overvoltage Protection Output. Use the OVPOUT active-high, push-pull output to trigger a safety
device such as an SCR.
Power-Good Output. The open-drain, active-low PGOOD output goes low when the VID programmed
output voltage falls out of regulation or a phase failure is detected. The power-good window
comparator thresholds are +8% and -10% of the VID programmed output voltage. Forcing EN low also
forces PGOOD low.
Differential Output Voltage-Sensing Positive Input. Used to sense a remote load. Connect SENSE+ to
V
programmed VID code and adaptive voltage positioning.
Differential Output Voltage-Sensing Negative Input. Used to sense a remote load. Connect SENSE- to
V
Differential Remote-Sense Amplifier Output. DIFF is the output of a precision unity-gain amplifier.
Voltage-Error Amplifier Inverting Input. Receives the output of the differential remote-sense amplifier.
Referenced to SGND.
Voltage-Error Amplifier Output. Connect to an external, gain-setting feedback resistor. The error
amplifier gain determines the output voltage load regulation for adaptive voltage positioning.
REG Input. A resistor on REG applies the same voltage-positioning window at different VRM voltage
settings. For a no-load output voltage (V
feedback resistor of the voltage-error amplifier. V
output voltage.
Current-Sense Differential Amplifier Positive Input. Senses the inductor current. The differential voltage
between CSP_ and CSN_ is amplified internally by the current-sense amplifier gain of 18.
Current-Sense Differential Amplifier Negative Input. Senses the inductor current.
Adaptive Voltage Center Position Input. Connect a resistor between CNTR and SGND to program the
center of the adaptive V
Output Enable. A logic low shuts down the power drivers. EN has an internal 5µA pullup current.
No Connection. Not internally connected.
Boost Flying-Capacitor Connection. Reservoir capacitor connection for the high-side FET driver
supply. Connect 0.47µF ceramic capacitors between BST_ and LX_.
High-Side Gate-Driver Output. Drives the gate of the high-side MOSFET.
OUT+
OUT-
or PGND at the load.
VRM 9.0, Dual-Phase, Parallelable,
at the load. The device regulates the difference between SENSE+ and SENSE- according to the
Average Current-Mode Controller
OUT
position. V
CNTR
CORE
regulates to +1.22V.
) equal to VID, set R
FUNCTION
REG
internally regulates to the programmed VID
REG
= R
F
, where the R
Pin Description
F
is the
9